Schaller RHL Grain Moisture Meter User Manual
- June 12, 2024
- Schaller
Table of Contents
Schaller RHL Grain Moisture Meter
Product Information
- Product Name: Moisture Meter
- Model: humimeter RHL
The humimeter RHL grain moisture meter is designed for measuring moisture levels in grain storage or grain silos. It comes with a data log feature for recording and storing measurements. The device has a basic unit with a display and keypad, as well as an external sensor with a removable cap and handle. The product also includes a battery case for powering the device.
Product Usage Instructions
Before Using the humimeter RHL:
Always read the user manual before using the humimeter RHL.
Measuring Moisture:
- Connect the sensor to the sensor connector on the basic unit.
- If applicable, connect the USB interface to the basic unit.
- Turn on the device using the keypad or display illumination option.
- Select the desired product type from the product selection menu using the keypad or navigation buttons.
- Once the product type is selected, the humidity value will be displayed on the screen.
- Use the keypad or navigation buttons to navigate through the display symbols and menus.
- To measure moisture, place the sensor head on the grain sample and press the appropriate button to start the measurement process.
- The moisture level will be displayed on the screen along with any other relevant information such as temperature.
Data Log:
- Access the Data Log menu from the main menu.
- Use the navigation buttons to view, save, or delete measurements stored in the data log.
- To save measurements, select the desired measurement and press the corresponding button.
- To view the last saved measurements, select the appropriate option from the Data Log menu.
Device Settings:
- Access the main menu to change device settings.
- Use the keypad or navigation buttons to navigate through the main menu options.
- Change display illumination, turn off the device, or navigate between different product types using the corresponding options in the main menu.
For more detailed information and additional instructions, please refer to the user manual provided with the humimeter RHL grain moisture meter.
Moisture meter
User manual humimeter RHL
Grain moisture meter
for measurements in the grain storage or grain silo
78,0°F | 6,16% | 456kg/m3 | -27,3td | 0,64aw | 51,9%r.H. | 14,8%abs | 100,4g/m2 | 09m/s | 4,90Ugl | 1
Version 1.1
Always read this user manual before using the humimeter RHL!
humimeter RHL grain moisture meter with data log user manual
Overview of your humimeter RHL
Overview basic unit 1 2 3
4
5
No Name 1 Connection for sensors 2 USB interface (optional) 3 Display 4 Keypad
5 Rubber protection
Page 2
Overview back side
1
No Name 1 Battery case
Overview external sensor
1
No Name 1 Sensor connector 2 Sensor head with removable cap 3 Handle
2 3
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humimeter RHL grain moisture meter with data log user manual
Measurement Measuring range
aw value rel. humidity abs. humidity grain moisture Calibration Temperature °C Temperature °F
0 to 1 0 to 100 % RH 0 to 130 g/m³ 10 to 18 % WC 10 to 90 % RH -20 °C to +120 °C -4 °F to 248 °F
Resolution 0.001 aw 0.1 % 0.1 g/m³ 0.1 %
0.1 °C 0.2 °F
Overview display
1 4
2
3 No Name
1 Product type 2 Humidity value (definition see “7.1 Definition
of product type”) 3 Display symbols 4 Temperature display
Overview display symbols
Symbol Name Enter Up Down Back
Page 4
Symbol Name No Change input level OK Change menu
Enter numbers Enter letters Forward / Right Left Yes Save Auto Log
Enter data View measurements Delete measurements On/Off display light Save measured value Hold function
Overview menus
The device has three different menus: product selection, Data Log and main
menu: Product selection
1
2
3
No Name
1 Change menu 2 Display illumination / device on/off 3 Navigate between
product types
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humimeter RHL grain moisture meter with data log user manual Data Log menu
1
2
34
No Name
1 Change menu 2 Turn on display light/ turn off device 3 Save measurements 4
View last saved measurements
Main menu
The main menu includes the following menu items:
· Data Log: Manual Logs, Auto Logs, Clear Logs
· Print Logs: Last log, All logs, Delete logs
· Send Logs: Manual logs, Auto logs, Delete logs
· Options: Bluetooth, Date/Time, Log Time, Emission ratio, Language, Unlock,
°C/°F, BL On Time, Off Time, Calibrate, Materialcalib., Online Send, Password,
Reset
· Status
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Introduction
Information on this user manual
This user manual enables safe and efficient use of the RHL humimeter. The user
manual is an essential part of the device and must be kept close to the
humimeter and be accessible to the user at any time. Before starting any work,
the user must carefully read and understand this manual. Basic requirement for
safe work is to follow all safety and handling instructions specified in this
user manual.
1.2 Limitation of liability
All of the information and instructions provided in this user manual have been
compiled on the basis of the current standards and regulations, the state of
the art, and the extensive expertise and experience of Schaller Messtechnik
GmbH. Schaller Messtechnik GmbH does not accept any liability for damages
associated with the following, which also voids the warranty:
· Non-observance of this user manual · Improper use · Inadequately qualified
users · Unauthorised modifications · Technical changes · Use of unapproved
spare parts This fast measuring procedure can be affected by a range of
different factors. We, as the manufacturer, do not accept any liability for
any incorrect measurement and associated consequential damage.
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humimeter RHL grain moisture meter with data log user manual
1.3 Symbols used in this manual
All safety instructions in this user manual are identified by symbols.
ATTENTION
Non-observance can lead to physical damage.
i Information
This symbol indicates important information that enables users to use the
device more efficiently and cost effectively.
WARNING
In case of non-observance, light or medium injuries can occur.
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1.4 Customer service
For technical advice, please contact our customer service department at
Schaller Messtechnik GmbH Max-Schaller-Straße 99 A – 8181 St.Ruprecht an der
Raab Telefon: +43 (0)3178 28899 Fax: +43 (0)3178 28899 – 901 E-Mail:
[email protected] Internet: www.humimeter.com © Schaller Messtechnik GmbH
2023
i Information
Your purchased measuring instrument can be calibrated, and the adjustment
checked by using suitable test ampoules / calibration ampoules. For this
purpose, use only the calibration solutions distributed by Schaller
Messtechnik Gmbh. You can download a calibration certificate for your test
ampoules / calibration ampoules with the batch number printed on the ampoul
fromhttps://www. humimeter.com/certificates/.
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humimeter RHL grain moisture meter with data log user manual
2. For your safety
The device complies with the following European directives: · Restriction of
Hazardous Substances in Electrical and Electronic Equipment (RoHS) ·
Electromagnetic compatibility (EMC)
The device corresponds to state-of-the-art technology. However, it is still
associate with a number of residual hazards. These hazards can be avoided
through strict observance of our safety information.
2.1 Proper use
· Fast measuring device for water activity determination of foods · Fast
measuring device for water content determination of grain · Fast measuring
device for climate and environmental applications
2.2 Improper use
· The device should not be used in ATEX areas. · The device is not waterproof,
protect it from water and fine dust.
ATTENTION MEDIA COMPATIBILITY
Exposure of the sensor to harmful media, especially solvents, acids, alcohols
and preservatives, can damage the sensor or cause changes in sensor
calibration. · The user is responsible to check the media compatibility before
using the RHL.
If necessary, a consultation with the sales partner or the manufacturer has to
made.
2.3 User qualifications
The device should only be handled by persons who are expected to carry out the
work reliably. Persons whose reactions are influenced, by drugs, alcohol or
medication, are not permitted to use the device. Persons who use this device
must have read and understood the user manual and follow its instructions.
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2.4 General safety information
Follow the safety instructions below to avoid personal injury and material
damage: · Remove the batteries from the device if it is not to be used for a
prolonged period (4 weeks). · If you notice loose parts or damage on the
device, remove the batteries and contact your distributor.
All of the device’s technical features have been inspected and tested before
delivery. Every device has a serial number. Do not remove the tag with the
serial number.
2.5 Warranty
Not covered by warranty: · Damages caused by non-observance of the user manual
· Damages caused by third-party intervention · Products that have been used
improperly or modified without authorization · Products with missing or
damaged warranty seals · Damages caused by majeure, natural disasters, etc. ·
Damages due to improper cleaning · Damage due to leaking batteries
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humimeter RHL grain moisture meter with data log user manual
First steps
Unpacking the device
· Unpack the device. · Next, make sure that it is not damaged and that no
parts are missing.
3.2 Checking the delivery content
Use the following list to check if the delivery is complete: 3.2.1 Scope of
supply
· humimeter RHL · 4 pieces AA alkaline batteries · Rubber protection · User
manual Required accessories: · LF_TB 120 sensor with 300 mm length ·
alternatively: LF_TB 120 sensor with special tube length
(possible length: 200 to 2000 mm) Optional accessories:
· Plastic case · Calibration ampoules – for self check of the humimeter RHx
device series · Calibration equipment – for self check of the humimeter RHx
device series · humimeter USB data interface module – USB stick with
LogMemorizer software
(measurement data recording and evaluation software) and USB cable · Portable
thermo printer (can only be used in combination with humimeter USB
data interface module) – Described in a separate user manual
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3.3 Inserting the batteries
1. Remove the rubber protection of 1
2
the device. Pull it off the top of
the housing (figure 1 and 2). If
the sensor is screwed on, it must
be first unscrewed or, in the case
of an optional USB interface, the
protective cover of the USB socket
has to be removed first.
3
2. Take the device in one hand and press with your thumb on the marked area of the battery compartment (1). Now slide the battery cover downwards from the device (2) (figure 3).
3. Insert the batteries with negative and positive terminals 4 matching those indicated on the battery compartment. Press the batteries down firmly, so that they lay flat on the bottom of the housing (figure 4).
» When all the batteries are inserted, the device turns on automatically. 5
4. Slide the battery cover back onto the housing until it clicks into place
(figure 5). Then put the rubber protection onto the housing – start with the
side where the battery cover is.
4. Using the device – Basics
4.1 Turn on the device
· Press the button for 3 seconds.
» The display will then show the status indicator (see “9. Checking the
device’s status”) for about 3 seconds.
» The device turns on automatically after inserting batteries.
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humimeter RHL grain moisture meter with data log user manual
4.2 Selecting the product type
To do so: The device has to be in the product selection menu.
For an overview of the different product types and the criteria for selecting them, please refer to”7. Product types”.
1. Press the or
button to move from one pro- 6
duct to the next Or
2. Press the or button for 2 seconds to open the product type overview (figure 6).
3. Use the arrow keys to move from one product type to the next and keep any of them pressed to scroll through the types.
4. Confirm your selection by pressing .
» The product type you selected will now be shown at the top of the display.
4.3 Exchanging the sensor
· If a sensor is already connected, unscrew it counterclock- 7 wise.
· Then plug the desired sensor into the device until both threads are in contact.
» Pay attention to the elevation in the connector and its
correct positioning (figure 8).
» The sensor should connect without force.
8
· Now tighten the thread.
4.4 Performing a measurement
· The measurement is described in chapter “5. Measurement”.
4.5 Turning off the device
To do so: The device has to be in the product selection or Data Log menu. It
is not possible to turn off the device when it is in the main menu.
· Press the button for 2 seconds.
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5. Measurement
5.1 Preparing a measurement
To do so: The device has to have nearly the same temperature as the product
being measured. It is recommended to let your humimeter device adjust to the
surrounding temperature for at least 30 minutes before the measurement.
· Turn on the device (see “4.1 Turn on the device”). · Connect the desired
sensor to the device (see “4.3 9
Exchanging the sensor”). » If no sensor is connected, the display will show No
Sensor (figure 9). · Select the desired product type (see “7. Product
types”) by pressing or (see “4.2 Selecting the product type”).
· Select a representative measuring point in your container, silo or
warehouse.
5.2 Performing a measurement
To do so: The device has to have nearly the same temperature 10 as the product
being measured (see “5.3 Adjustment behaviour of the sensor”).
· Makre sure you have a representative measuring point in your container, silo
or warehouse.
» Insert the measuring head of the device straight into the material being
measured.
» Do not bend or drop the measuring head! » Let the device adjust to the
material being measu- 11
red for an adequate time period (see “5.3 Adjustment behaviour of the sensor”
Seite 21). » The measuring values are shown on the display of the device. »
Now you can save the displayed measured value on the device (see “6.2 Manual
memory function” or “6.3 Auto save function (time-based)”).
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humimeter RHL grain moisture meter with data log user manual
ATTENTION
Injury hazard Risk of injury by the measuring head Keep the measuring
electrodes away from your body during all activities. Keep the measuring
electrodes away from other people’ bodies during all
activities.
i Information – Measuring accuracy
This rapid and non-destructive measuring procedure allows you to quickly take
moisture readings at a number of different points. When saving the individual
readings, the device will automatically calculate the readings’ average (see
“6.2.2 Saving several readings (measurement series)”).
i Information – Incorrect readings
Make sure to select the correct product type for the material you are
measuring. This prevents taking incorrect readings (see “13. Faults”).
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5.3 Adjustment behaviour of the sensor
In humidity and temperature measurement, several parameters are responsible
for the adjustment behaviour (time until the actual measured value is
displayed). The parameter that can cause the highest measurement error is the
temperature difference between the sensors, as well as the entire measuring
device, and the material to be measured, or the air.
Therefore, allow your humimeter device to adjust until the displayed
temperature corresponds to the actual temperature. The graph below shows how
long it takes to adjust from 20 °C to 30 °C.
To demonstrate the importance of temperature adjustment, the table below shows the measuring errors due to a temperature difference between the measuring instrument and the material being measured of only 1 °C / 1.8 °F at different ambient temperatures.
10 % r.h. 50 % r.h. 90 % r.h.
10 °C (50 °F)
+/- 0,7 % +/- 3,5 % +/- 6,3 %
20 °C (68 °F)
+/- 0,6 % +/- 3,2 % +/- 5,7 %
30 °C (86 °F)
+/- 0,6 % +/- 3,0 % +/- 5,4 %
At room temperature (20 °C / 68 °F) and an assumed humidity value of 50 % relative humidity a temperature difference between the measuring sensor and the material being measured of 1 °C / 1.8 °F causes a measurement error of 3.2 % relative humidity. A temperature difference of 3 °C / 5.4 °F would cause a measurement error of more than 10 % relative humidity.
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humimeter RHL grain moisture meter with data log user manual
6. Memory function
6.1 Hold function – Freezing the displayed values
The device can be configured in such a way that the information being shown on
the display will freeze at the touch of a button until a new button is
pressed. This function can be used if the measured value should remain on the
display.
6.1.1 Activate the Hold function in the options
To do so: The device is turned on and in the product selection menu.
1. Press twice or hold for 2 seconds. 12
2. Select Options by pressing the or button and confirm with .
3. Select Log Time (figure 12). Press the or button and confirm with .
4. Select Hold (figure 13). Press the or button 13 and confirm with .
» The setting has been saved.
5. Press 6. Press
to leave the Options menu. to leave the main menu.
6.1.2 Using the Hold function
To do so: The device is turned on and is in the memory mode.
· Press . » The current reading will be frozen. All of the four 14
symbols will now be displayed as (figure 14).
· Press any button to reactivate the frozen display.
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6.2 Manual memory function
All of the readings can be saved, edited and viewed on the device. The figure below shows the overview screen of a single saved series of measurements.
1
78
2
6
3
4
5
No Name
1 Name of the measurement series (editable) 2 Temperature (average) 3 Date &
start time of the measurement series 4 Date & end time of the measurement
series 5 Number of saved readings 6 Product type 7 Device name 8 Moisture
value (average)
6.2.1 Saving individual readings
The device can be configured in such a way that the device will save a reading every time a button is pressed. This option (manual save function) is the device’s default setting.
Activating the manual save function in the Options menu
To do so: The device has to be turned on and be in the product selection menu.
1. Press twice or hold for 2 seconds.
2. Select Options by pressing the or button
15
and confirm with .
3. Select Log Time by pressing the or button and confirm with .
4. Select Manal (figure 15) by pressing the or button and confirm with .
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humimeter RHL grain moisture meter with data log user manual
» The setting has been saved. 5. Press to leave the Options menu. 6. Press to leave the main menu.
Using the manual save function
To do so: The device has to be in the Data Log menu
(see “Data Log menu” Seite 6).
16
1. Press .
» Figure 16 appears on the display. The number one now appears in front of the measured value.
2. Press to add a name to the stored measured
value and complete the measurement.
17
» Figure 17 appears on the display.
3. The entered data can be overwritten at any time.
4. Add letters:
Press and hold
to quickly scroll to the
18
required letter and either press it for 3 seconds or
press to confirm the selected letter (figure 18).
5. Add numbers:
Press and hold
to quickly scroll to the
required number and either press it for 3 seconds
or press to confirm the selected number.
6. Navigate forward/backward:
Press to switch to another input level. Press or to move forward or backward.
7. Confirm your entry by pressing . » The data you entered has been saved.
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6.2.2 Saving several readings (measurement series)
To do so: The device has to be in the Data Log menu (see “Data Log menu” Seite 6)
1. Take several readings (see “5. Measurement”).
2. To save a reading, press as soon as the reading has been taken.
» Figure 179 appears on the display. The marked
number increases with each saving.
19
3. Pres to add a name to the stored measured value and complete the measurement.
» Figure 20 appears on the display.
4. The entered data can be overwritten at any time. 20
5. Add letters:
Press and hold
to quickly scroll to the
required letter and either press it for 3 seconds or
press to confirm the selected letter (figure 21).
6. Add numbers:
Press and hold
to quickly scroll to the
required number and either press it for 3 seconds
21
or press to confirm the selected number.
7. Navigate forward/backward: Press to switch to another input level. Press
or to move forward or backward.
22 8. Confirm your entry by pressing .
» The data you entered has been saved.
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humimeter RHL grain moisture meter with data log user manual
6.3 Auto save function (time-based)
The device can be configured in such a way that it will automatically save a
reading (log) at a selected time interval.
6.3.1 Activating the Auto save function in the Options menu
To do so: The device has to be switched on and be in the product selection menu. 1. Press twice or hold for 2 seconds.
2. Select Options by pressing the or button
23
and confirm with .
3. Select Log Time (figure 23) by pressing the or button and confirm with .
24
4. Navigate to the desired time interval (figure 24) by pressing the or
button and confirm by pressing .
5. The setting has been saved.
6. Press 7. Press
to leave the Options menu. to leave the main menu.
6.3.2 Auto save function: Saving measured values
To do so: The device has to be in the Data Log menu
25
(see “Data Log menu” Seite 6).
1. Press
.
» The device will save a reading at the selected time interval. The number of data saves will increase by one every time a reading is saved. On the display 26 appears figure 25.
2. Press to add a name to the stored measured value and complete the measurement.
» On the display appears figure 26. 3. The entered data can be overwritten at any time.
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4. Add letters:
Press and hold
to quickly scroll to the required letter and either press it
for 3 seconds or press to confirm the selected letter.
5. Add numbers:
Press and hold
to quickly scroll to the required number and either press it
for 3 seconds or press to confirm the selected number.
6. Navigate forward/backward:
Press to switch to another input level. Press or to move forward or backward.
7. Confirm your entry by pressing . » The data you entered has been saved.
6.4 Viewing individual readings
To do so: One measurement (e.g. 1 log) has been saved. On the display appears .
27
1. Press .
2. Select the required reading. To do this press .
» On the display appears figure 28.
or 28
» Press to leave this screen.
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humimeter RHL grain moisture meter with data log user manual
6.5 View individual measured values of a measurement series
To do so: A measurement (e.g. 2 Logs) has been saved. 29
On the display appears
.
1. Press .
2. Navigate to the required measurement by pressing
or .
30
» On the display appears figure 30.
3. Press to switch to another input level.
» On the display appears figure 31.
31
4. Press
again.
» On the display appears figure 32.
5. Navigate to the required reading (No.: 1, No.: 2,
No.: 3) by pressing
.
32
6. Press to leave this screen.
6.6 Delete all measured values (data log)
To do so: You must have taken and saved one or several 33 readings. 1. Press twice or hold for 2 seconds.
2. Select Edit Logs (figure 33) by pressing or
and confirm with .
34
3. Select Clear Logs (figure 34) by pressing or and confirm with .
4. On the display appears the message clear? (figure 35).
35
5. Confirm with . » The data log has been deleted.
6. Press to leave the Edit Logs menu.
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7. Press to leave the main menu.
6.7 Delete single measurement series
36 To do so: A measurement (1 Log) or a measurement series (e.g. 3 Logs) has
been saved. On the display appears 1. Press . 2. Navigate to the required
measurement by pressing 37
or . » On the display appears figure 37. 3. Press to switch to another input
level.
38 » On the display appears figure 38. 4. Press . » On the display appears the
message clear? (figure 39
39). 5. Confirm with .
» The measurement has been deleted.
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humimeter RHL grain moisture meter with data log user manual
6.8 Deleting individual values from a single series of measurements
To do so: A measurement series with at least 2 logs has been saved. On the display appears .
40
1. Press .
2. Navigate to the required measurement by pressing
or .
41
» On the display appears figure 421.
3. Press to switch to another input level.
» On the display appears figure 412.
42
4. Press .
5. On the display appears figure 43.
6. Navigate to the required measurement by pressing
or .
43
7. Press to switch to another input level.
» On the display appears figure 44.
8. Press to delete the displayed value.
44
» On the display appears the message clear? (figure 45).
9. Confirm with . 45
» The data log has been deleted.
» Deleted measuring values will be transferred to the LogMemorizer (see “8. Using the LogMemorizer program”) and have to be deleted separately.
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7. Product types
The following product types are available:
Product type Absolute humidity g/m³ Relative humidity Wheat
Barley
Rye
Triticale
Corn aw-value Free 1 – 5
Definition absolute humidity
Unit
Measuring range
g/m³ 0 to 130 g/m³
relative humidity
% RH 0 to 100 %
equilibrium moisture content of wheat
% WC
10 to 18 % WC
equilibrium moisture content of barley
% WC
10 to 18 % WC
equilibrium moisture content of rye
% WC
10 to 18 % WG
equilibrium moisture content of triticale
% WC
10 to 18 % WC
equilibrium moisture content of corn
% WC
10 to 20 % WC
water activity
aw
0 to 1
free product types for self-calibration
Calibrated range –
10 to 90 % 12 to 16 % 12 to 16 % 12 to 16 % 12 to 16 % 12 to 18 % 0.1 to 0.9
7.1 Definition of product type
Absolute humidity
The absolute air humidity shows the contained amount of water in gramme per
cubic metre of air. The absolute humidity is a direct degree for the amount of
water vapour contained in a certain air volume. It shows how much condensate
can precipitate or how much water has to be evaporated in order to obtain the
desired humidity.
Relative humidity
Relative humidity indicates the ratio between the current water vapor pressure
and the highest possible pressure, known as saturation vapor pressure.
The relative humidity shows the degree the air is saturated with water vapor. Examples:
50% relative humidity: At the current temperature and pressure, the air is half saturated with water vapor. 100% relative humidity means that the air is totally saturated
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humimeter RHL grain moisture meter with data log user manual
with water vapou. If the air has more than 100% humidity, the excessive
humidity would condense or precipitate as mist.
Equilibrium moisture content of grain
Displays the grain equilibrium moisture in % water content and the temperature
in the selected unit (°C or °F).
aw-value
Water activity (Activity of Water) is also described as free or non-cellularly
bound water in products such as food. The water activity is described in
chapter “7.2 Definition water activity”.
Free calibration curves
There are free calibration curves in the measuring device, which can be used
for measuring special fruits or products.
Schaller Messtechnik GmbH can also develop customer-specific calibration
curves for your product on request.
7.2 Definition water activity
Water activity is the ratio of the water vapor partial pressure in food (p) to
the saturation vapor pressure of pure water (p0). It is an important indicator
of product quality in food, tobacco or pharmaceutical industries and is
represented in aw from 0 to 1.
Water activity is equivalent to equilibrium humidity – the relative humidity
at which the product is in equilibrium with the surrounding air. However,
equilibrium humidity is expressed as a percentage.
The aw-value is temperature dependent, for an aw-value determination at the
desired temperature the instrument and the sample should be pre-stored at this
temperature. The humimeter RHL Aw-value measuring device is suitable for
measuring materials such as grain products, coffee, cocoa, cereals, butter,
dried fruit mixtures, spices, granulates, mushrooms, sugar, xylitol, cookies
or even dried sausage as well as many other food products for which a testing
of the aw-value is necessary. The Aw value measuring device is generally not
suitable for liquids and juices (syrup), acidic foods such as onions and
tropical fruits as well as fruit or alcoholic beverages and foods such as
filled chocolates. Vinegar and acids destroy the calibration and the sensor.
Materials with a moisture content above the fiber saturation point, i.e. with
an aw-value above 1, cannot be measured either. In this case, only the water
content of the sample can be determined.
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The water activity should not be mistaken for the water content – the percentage of water in a product! The water content is used to calculate the dry content of food and materials, it indicates the ratio of water to the total mass as a percentage (kg/kg) x 100.
Water activity affects the following properties of a product:
· microbiological stability · chemical stability · enzymatic stability · color, flavor and nutritive value · protein and vitamin content · composition stability · expiration date · storage and packaging
Every life form depends on water. Water activity indicates the amount of water available to microorganisms such as bacteria, fungi, molds, etc. Each microorganism species has a minimum water activity value below which no growth is possible.
Typical minimal water activity values from the literature:
Water activity aw = 0.91 – 0.95 aw = 0.88 aw = 0.80 aw = 0.75 aw = 0.70 aw = 0.65
Organism Bacteria Yeasts Mould Halophilic bacteria Osmiophilic yeasts Xerophilic moulds
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humimeter RHL grain moisture meter with data log user manual Typical sorption
isotherms of various foods and materials from the literature:
7.3 Application range
The device functions in the normal application range (normal range) within the
specified accuracy. Long-term use outside the normal application range (max.
range), especially at humidity above 80 %, can lead to higher measurement
deviations (+3 % after 60 h). When returning to the normal application range,
the sensor returns to the specified accuracy by itself.
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8. Using the LogMemorizer program
To do so: You have the optional USB interface installed in the device as well
as the USB stick with the LogMemorizer software and the USB cable.
8.1 Installing/opening the program
1. Insert the USB stick with the LogMemorizer program into the USB port on
your computer.
2. Open the setup application. 3. Follow the installation instructions. 4.
Open LogMemorizer.
» The LogMemorizer user interface appears on the screen (figure 46). » Before
using the LogMemorizer program, the USB COM port must be configured
according to the LogMemorizer user manual. 46
The LogMemorizer program is described in a separate user manual.
8.2 Send values to PC
To do so: You have installed the LogMemorizer software. One or more
measurements have been performed and saved. Option: The transfer of the
measured values can be started from the humimeter RHL or from the PC.
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humimeter RHL grain moisture meter with data log user manual
Exporting moisture readings from the humimeter RHL
47 Connect the humimeter RHL to your computer using the supplied USB cable.
1. Insert the USB Mini B connector into the humimeter RHL (figure 47).
2. Insert the USB connector into the computer. 48
3. Open LogMemorizer on your computer.
4. Turn on the humimeter RHL.
1. Press twice or hold for 2 seconds.
2. Navigate to Send Logs (figure 48) by pressing and confirm with .
or 49
3. Navigate to Manual Logs or Auto Logs (figure 49) by pressing or and
confirm with . 50
4. On the display appears Send (figure 50).
» All of the measuring values saved on the humimeter RHL will now be sent to your PC.
Initiating the data export at your computer
Connect the humimeter RHL to your computer using the supplied USB cable.
1. Insert the USB Mini B connector into the humi-
51
meter RHL (figure 51).
2. Insert the USB connector into the computer.
3. Open LogMemorizer on your computer.
4. Turn on the humimeter RHL.
5. Open the Communication tab in LogMemorizer (figure 52).
52
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6. Select and click on one of the buttons shown in figure 53:
» Import all auto save logs (for importing all automatically saved readings) »
Import most recent auto save series (for importing the most recent
automatically
saved logs) » Import all manual logs (for importing all manually saved
readings) » Import most recent manual log (for importing the most recent
manually saved
logs).
53
1
2
34
No Name
1 Import all auto save logs 2 Import most recent auto save
series 3 Import all manual logs 4 Import most recent manual
log
» The measuring values saved on the humimeter RHL will now be sent to your computer.
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9. Checking the device’s status
1. Press twice or hold for 2 seconds.
2. Navigate to Status by pressing or and confirm with .
» On the display appears humimeter.
» The display shows the following information (figure 54):
54
1 2
3
4
No Name 1 Serial number 2 Software version 3 Battery status 4 Memory status
3. Confirm with .
4. Press to leave the main menu.
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10. Configuring the device
10.1 Bluetooth settings
Bluetooth is described in a separate user manual.
10.2 Set date/time
1. Press twice or hold for 2 seconds.
2. Navigate to Options by pressing or and confirm with .
3. Navigate to Date/Time by pressing or and confirm with .
4. On the dispay appears figure 55.
» The format for the date is DD-MM-YY (Day-Month-
Year).
55
» The format for the time is hh:mm:ss (hour:minutes:seconds).
5. Add numbers:
Press and hold
to quickly scroll to the
required number and either press it for 3 seconds 56
or press to confirm the selected number
(figure 56).
6. Navigate forward: Navigate forward between DD-MM-YY and hh:mm:ss by
pressing .
7. Navigate backward: Press to switch to another input level. To move
backward between DD-MMYY and hh:mm:ss press .
8. Confirm the date/time by pressing .
» The settings have been saved.
9. Press to leave the Options menu.
10. Press to leave the main menu.
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10.3 Setting the emission ratio
1. Press twice or hold for 2 seconds.
2. Navigate to Options by pressing or and confirm with .
3. Navigate to Emission ratio by pressing or and confirm with .
4. Overwrite the current emission ratio. Press and hold the required number and wait for 3 seconds or press number.
to quickly scroll to to confirm the selected
Navigate backward:
Press to switch to another input level. Navigate back with .
5. Confirm the new emission ratio by pressing .
» The setting has been saved.
6. Press to leave the Options menu.
7. Press to leave the main menu.
10.4 Selecting a language
1. Press twice or hold for 2 seconds.
2. Navigate to Options by pressing or and confirm with .
3. Navigate to Language by pressing or and confirm with .
4. Navigate to the required language by pressing or and confirm with . » The setting has been saved.
5. Press 6. Press
to leave the Options menu. to leave the main menu.
10.5 Unlock options
57
To do so: Certain options are deactivated.
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1. Press twice or hold for 2 seconds.
2. Navigate to Options by pressing or and confirm with .
3. Select Unlock by pressing or and confirm with .
4. On the display appears figure 57. 58
» On delivery, the four-digit password is the serial number of the device.
5. Add numbers:
Press and hold
to quickly scroll to the
required number and wait for 3 seconds or press
number (figure 58).
to confirm the selected
6. Navigate backward: Press to switch to another input level. Navigate back
with .
7. Confirm the four-digit password by pressing .
» The setting has been saved.
» The C/°F, BL On Time, AUTO OFF Time, Calibrate, Materialcalib., Online Send,
Password, Reset options are activated now.
8. Press to leave the Options menu.
9. Press to leave the main menu.
10.6 Lock options
After turning the device off and on, °C/°F, BL On Time, AUTO OFF Time,
Calibrate, Materialcalib., Online Send, Password, Reset options will be
deactivated again.
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10.7 Set °C/°F
To do so: All options are activated (see “10.5 Unlock options”). 1. Press
twice or hold for 2 seconds. 2. Navigate to Options by pressing or and confirm
with . 3. Navigate to °C/°F by pressing or and confirm with . 4. Navigate to
the preferred temperature scale Celsius(°C) or Fahrenheit (°F) by
pressing or and confirm with . » The setting has been saved. 5. Press to leave
the Options menu. 6. Press to leave the main menu.
10.8 Power saving mode setting
10.8.1 Display illumination setting
To do so: All options are activated (see “10.5 Unlock options”). 1. Press twice or hold for 2 seconds.
2. Navigate to Options by pressing or and confirm with .
3. Navigate to BL On Time by pressing or and confirm with . 4. Navigate to
the preferred time for the display to remain lit (30 seconds/2 minu-
tes/5 minutes/10 minutes) by pressing or and confirm with . » The setting has
been saved.
5. Press 6. Press
to leave the Options menu. to leave the main menu.
10.8.2 Automatic power off setting (“Auto Off Time”) To do so: All options are activated (see “10.5 Unlock options”).
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1. Press twice or hold for 2 seconds.
2. Navigate to Options by pressing or and confirm with .
3. Navigate to Auto Off Time by pressing or and confirm with . 4. Navigate to
the preferred time for the device to remain on (3 minutes/5 minu-
tes/10 minutes) by pressing or and confirm with . 5. The setting has been
saved.
6. Press 7. Press
to leave the Options menu. to leave the main menu.
10.9 Calibrating the device
Instructions for the device calibration are available on request.
10.10 Sort calibration setting
Sort calibration setting is described in a separate user’s manual.
10.11 Online Send
To do so: All options are activated (see “10.5 Unlock options”). 1. Press twice or hold for 2 seconds.
2. Navigate to Options by pressing or and confirm with .
3. Navigate to Online Send by pressing or and confirm with .
4. The setting has been saved.
» The device now automatically sends the stored measured value to the PC each
time the memory button is pressed.
5. Press 6. Press
to leave the Options menu. to leave the main menu.
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humimeter RHL grain moisture meter with data log user manual
10.12 Changing the password
To do so: All options are activated (see “10.5 Unlock options”). 1. Press twice or hold for 2 seconds.
2. Navigate to Options by pressing or and confirm with .
3. Navigate to Password by pressing or and confirm with . » On the display appears the current password.
4. Overwrite the current password. Press and hold
to quickly scroll to the
required number and either press it for 3 seconds or press to confirm the
selected number.
Navigate backward:
Press to switch to another input level. Navigate back with .
5. Confirm the new four-digit password by pressing .
» The setting has been saved.
6. Press to leave the Options menu.
7. Press to leave the main menu.
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10.13 Resetting the device to its factory settings
To do so: All options are activated (see “10.5 Unlock options”). 1. Press twice or hold for 2 seconds.
2. Navigate to Options by pressing or and confirm with .
3. Navigate to Reset by pressing or and confirm with . 4. On the display appears Reset? (figure 59).
5. Confirm with .
59
» The device will now be reset to its factory settings. All of your personal settings will be lost.
» On the display appears the status humimeter (figure
60).
60
» Saved measured values will not be lost by resetting.
11. Cleaning and maintenance
Through regular cleaning and maintenance, you ensure that your device remains
intact as long as possible.
11.1 Changing the batteries
The device monitors the battery charge level constantly. 61 The current
battery status is shown on the status screen.
Should an exclamation mark appear in the battery symbol, recharge the
batteries immediately (figure 61).
Proceed as described in section “3.3 Inserting the batte- 62 ries” .
As the end user, you are legally obligated to return all used batteries;
disposal with household waste is forbidden (Battery Directive).
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humimeter RHL grain moisture meter with data log user manual
11.2 Care instructions
· Do not leave the device out in the rain. The device is not waterproof. · Do
not immerse the sensor into water. · Do not expose the device to extreme
temperatures. · Protect the device from strong mechanical shocks and loads.
11.3 Cleaning the device
ATTENTION
Device damage caused by wet cleaning Water or cleaning fluids getting inside
the device can destroy the device. Only clean with dry materials. Housing
Clean the plastic housing with a dry cloth. aw-value measuring chamber Clean
the screw glass with a cloth and cleaning alcohol. It is not possible to clean
the sensor. In case of contamination, contact your dealer.
12. Checking the calibration
The adjustment of the calibration is described in a separate user manual.
12.1 Determining the deviation
1. Allow the sensor to adjust to the humidity standard for at least 2 hours.
2. Turn on the meter (see “4.1 Turn on the device”) and select the “relative humidi-
ty” characteristic curve. For this, press type”).
or (see “4.2 Selecting the product
3. Read the displayed humidity value and note it down together with the displayed temperature.
4. If the temperature conditions are ideal (measuring device, aw-value measuring chamber and calibration ampoules have 23 °C), the value printed on the humidity standard can be used as a reference value.
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Temperature
20 °C 21 °C 22 °C 23 °C 24 °C 25 °C 26 °C
Calibration ampoules
35 % 34.6 % 34.8 % 34.9 % 35.0 % 35.1 % 35.2 % 35.4 %
50 % 49.8 % 49.8 % 49.9 % 50.0 % 50.1 % 50.2 % 50.2 %
80 % 79.9 % 80.0 % 80.0 % 80.0 % 80.0 % 80.0 % 80.1 %
5. Note down the real humidity value.
6. Compare the noted displayed value with the real humidity value.
» If the displayed value shows a deviation of more than 1.5 % rel. humidity,
it is recommended to perform a recalibration.
» A calibration can be performed by the company Schaller Messtechnik GmbH.
» It is also possible to perform the calibration on your own using the
calibration ampoules: A manual for the calibration procedure is available on
request from Schaller Messtechnik GmbH or your dealer.
7. Open the measuring chamber and clean the glass vessel with plenty of
water, the textile pad must be washed out well and can then be discarded.
13. Faults
If the following actions do not eliminate the faults or if other faults not listed here appear, please contact Schaller Messtechnik GmbH.
Fault Measuring error
Cause
Material temperature outside the application range: below -10 °C or above +60
°C
Measurement error caused by too short adjustment time
Remedy
Only use the measuring device for temperatures between -10 °C and +60 °C.
Allow the device to adjust to the environment sufficiently long (see “5.3
Adjustment behaviour of the sensor”).
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humimeter RHL grain moisture meter with data log user manual
Fault
Cause
Remedy
Wrong product type
Dripping or sprayed water
Irreversible impairment of the sensor element by aggressive gases Condensation
hazard with temperature change
Dirty humidity sensor Foreign objects on the sensors Data transfer to Log-
Interface not configured Memorizer software fails
Before you start a measurement, check whether the correct product type is set
(see “7. Product types”).
The sensor can be destroyed by direct contact with dripping or sprayed water.
In this case, contact your dealer.
Condensation on the sensor affects the calibration. Allow the device to adjust
to the environmental temperature.
In this case, contact your dealer.
In this case, contact your dealer.
For the one-time configuration of the interface press the F1 key of your PC
and read the help file of the LogMemorizer software.
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14. Storage and disposal
14.1 Storing the device
Store the device as follows: · Do not store outdoors. · Store dry and dust-
free. · Protect from sunlight. · Avoid mechanical shocks and impacts. · Always
remove the batteries from the device if it is not used for more than 4 weeks.
· Storage temperature: -20 °C to +60 °C
14.2 Disposal of the device
Devices marked with this symbol are regulated by the European Directive
2012/19/EU of the European Parliament and the Council of 4 July 2012 relating
to waste of electrical and electronic equipment. If the device is not used
within the European Union, national disposal regulations in the country of use
must be observed. Electrical devices should not be disposed of with household
waste. Please recycle the device in an environmentally friendly way using
suitable recycling systems.
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humimeter RHL grain moisture meter with data log user manual
15. Device information
15.1 EC declaration of conformity
___ KONFORMITÄTSERKLÄRUNG DECLARATION OF CONFORMITY
Name/ Adresse des Herstellers: Name/ address of manufacturer:
Schaller Messtechnik GmbH Max-Schaller-Straße 99 A 8181 St. Ruprecht
Produktbezeichnung: Product designation: Typenbezeichnung: Type designation:
Produktbeschreibung:
Product description
humimeter
RH1 ; RH2 ; RH2 AW ; RH5 ; RH5.1 ; RH5.2 ; RH6 ; RHL ; SW1
Messgerät zur Bestimmung der rel.Feuchte und abgeleiteter Messgrößen Measuring
instrument for determining relative humidity and derived measured variables
Das bezeichnete Produkt erfüllt die Bestimmungen der Richtlinien: The designated product is in conformity with the European directives:
EMV – Richtlinie 2014/30/EC RoHS – Richtlinie 2011/65/EG
EMC Directive 2014/30/EU RoHS-Directive 2011/65/EU
Die Übereinstimmung des bezeichneten Produktes mit den Bestimmungen der
Richtlinien wird durch die vollständige Einhaltung folgender Normen
nachgewiesen:
Full compliance with the standards listed below proves the conformity of the
designated product with the provisions of the above-mentioned EC Directives:
EN 613261:2013
EN IEC 63000:2019-05 ersetzt / replaced EN 50581:2012
Elektrische Mess-, Steuer-, Regel- und Laborgeräte – EMV-Anforderungen
Electrical equipment for measurement, control, and laboratory use EMC
requirements
Technische Dokumentation zur Beurteilung von Elektro- und Elektronikgeräten
hinsichtlich der Beschränkung gefährliche Stoffe. Technical documentation for
the assessment of electrical and electronic products with respect to the
restriction of hazardous substances.
Page 50
Für das angeführte Produkt ist eine vollständige Dokumentation mit
Betriebsanleitung in Originalfassung vorhanden.
For the mentioned product a complete documentation with manual of instruction
in original version is available.
Bei Änderungen, die nicht vom Hersteller spezifiziert sind, verliert diese
Konformitätserklärung die Gültigkeit.
In case of any changes not agreed upon with the manufacturer, this declaration
of conformity loses its validity.
St. Ruprecht a.d. Raab, 31.07.2022
…………………………………………………..
Bernhard Maunz Rechtsverbindliche Unterschrift des Ausstellers Legal binding
signature of the issuer
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humimeter RHL grain moisture meter with data log user manual
___ DECLARATION OF CONFORMITY
Name/ address of manufacturer:
Schaller Messtechnik GmbH Max-Schaller-Straße 99 A 8181 St. Ruprecht
Product designation:
humimeter
Type designation: Product description
RH1 ; RH2 ; RH2 AW ; RH5 ; RH5.1 ; RH5.2 ; RH6 ; RHL ; SW1
Measuring instrument for determining relative humidity and derived measured
variables
The designated product is in conformity with the following directives:
· Electromagnetic Compatibility Regulations 2016 Great Britain
· RoHS-Directive 2011/65/EU Directive on the restriction of the use of certain
hazardous substances in electrical and electronic equipment
Full compliance with the standards listed below proves the conformity of the designated product with the provisions of the above-mentioned Directives:
EN 613261:2013
EN IEC 63000:2019-05 replaced EN 50581:2012
Electrical equipment for measurement, control, and laboratory use EMC
requirements
Technical documentation for the assessment of electrical and electronic
products with respect to the restriction of hazardous substances.
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For the mentioned product, a complete documentation with manual of instruction
in original version is available.
In case of any changes not agreed upon with the manufacturer, this declaration
of conformity loses its validity.
St. Ruprecht a.d. Raab, 31.07.2022
…………………………………………………..
Bernhard Maunz Legal binding signature of the issuer
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humimeter RHL grain moisture meter with data log user manual
15.2 Technical Data
Display resolution
Measuring range rel. humidity Calibration rel. humidity Measuring range dew
point Measuring range grain Grain calibration Measuring range aw-value
Calibration aw-value Accuracy rel. humidity Accuracy temperature Grain
accuracy Accuracy aw-value (at 25 °C)
Operating temperature Storage temperature Temperature compensation Measured
value memory Power supply Power consumption Menu languages
Display Device dimensions Device weight Device IP rating
0.1 g/m3 abs. humidity, 0.1 % rel. humidity, 0.1 °C/ 0.3 °F temperature, 0.1 %
equilibrium moisture of grain, 0.001 aw
0 % to 100 % RH
10 % to 90 % RH -55 °C to +60 °C 10 % to 20% (sort dependent) 12 % to 16 % 0
to 1 0.1 to 0.9 +/- 1.5 % (at 25 °C) +/- 0.3 °C (at 25 °C) / +/- 0.5 °F (at 77
°F) +/- 0.6 % (at 25 °C) +/- 0.015 from 0.1 to 0.8 +/- 0.04 from 0 to 0.10 and
from 0.80 to 0.98 -10 °C to +60 °C -20 °C to +60 °C automatic up to 10,000
measuring values 4 x 1.5 Volt AA Alkaline batteries 60 mA (with display
illumination) English, German, French, Italian, Spanish, Portuguese, Czech,
Polish, Russian, International 128 x 64 illuminated matrix display 145 x 75 x
30 mm 266g (incl. batteries) IP 40
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16. Notes
Page 55
Climate & Environement
Materials
Food
Buildings
Bioenergy
Paper / Board
Schaller Messtechnik develops, produces and sells professional moisture meters and turnkey solutions.
Schaller Messtechnik GmbH Max-Schaller-Straße 99, A – 8181 St. Ruprecht an der
Raab Tel +43 (0)3178 – 28899 , Fax +43 (0)3178 – 28899 – 901
[email protected], www.humimeter.com