GREISINGER GMH 3350 Digital Precision Hand Held Measuring Device Instruction Manual

GREISINGER GMH 3350 Digital Precision Hand Held Measuring Device

Specifications

• Model: H40.0.21.6C-12

• Type: Digital Precision Hand-held Measuring Device

• Measurements: Atmospheric Humidity, Temperature, Dew Point, Dew
  Point Distance, Enthalpy, Flow Speed

• Version: V2.9

• Manufacturer: Greisinger

• WEEE-Reg.-Nr: DE93889386

• Contact Information:

• Phone: +49 (0) 9402 / 9383-0

• Fax: +49 (0) 9402 / 9383-33

• Email: [email protected]

• Website: https://manual-hub.com/

General Note
It is important to read this document carefully and familiarize yourself with the operation of the device before using it. Keep this document nearby for reference in case of doubts or questions.

Safety

Intended Use
The device must be used according to its intended purpose and under suitable conditions. Do not throw or strike the device. The device, combined with the combined measuring probe TFS 0100, is designed for room climate measurements, including atmospheric humidity, temperature, dew point, dew point distance, and enthalpy. When used with the flow rate measuring probes STS 005 and STS 020, the device can provide flow rate measurements in water or air. The device also features useful features such as min-/max-alarm, hold, real-time clock, and interface. Additionally, the device has an integrated logger that can save up to 5400 data sets at cyclic measurement.

General Note

Read this document carefully and get used to the operation of the device before you use it. Keep this document within easy reach near the device for consulting in case of doubt.
Mounting, start-up, operating, maintenance and removing from operation must be done by qualified, specially trained staff that have carefully read and understood this manual before starting any work.
The manufacturer will assume no liability or warranty in case of usage for another purpose than the intended one, ignoring this manual, operating by unqualified staff as well as unauthorized modifications to the device.
The manufacturer is not liable for any costs or damages incurred at the user or third parties because of the usage or application of this device, in particular in case of improper use of the device, misuse or malfunction of the connection or of the device.
The manufacturer is not liable for misprints.

Safety

Intended Use
The safety requirements (see below) have to be observed.
The device must be used only according to its intended purpose and under suitable conditions.
Use the device carefully and according to its technical data (do not throw it, strike it, …)
The device combined with the combined measuring probe TFS 0100 is designed for room climate measurements. This includes gauging of atmospheric humidity, temperature, dew point, dew point distance and enthalpy.

Together with the flow rate measuring probes STS 005 and STS 020 the device provides flow rate measurements either in water or in air.
The device features a lot of useful features as for example min-/max-alarm, hold, real-time clock, interface etc. Furthermore, the device has an integrated logger, which can save up to 5400 data sets (at cyclic measurement).
Protect the device from dirt.

Safety signs and symbols
Warnings are labeled in this document with the following signs

• Caution! This symbol warns of imminent danger, death, serious injuries, and significant damage to property at non-observance.
• Attention! This symbol warns of possible dangers or dangerous situations that can provoke damage to the device or environment at non-observance.
• Note! This symbol points out processes that can indirectly influence operations or provoke unforeseen reactions at non-observance.

Safety guidelines
This device has been designed and tested in accordance with the safety regulations for electronic devices. However, its trouble-free operation and reliability cannot be guaranteed unless the standard safety measures and special safety advises given in this manual will be adhered to when using the device.

1. Trouble-free operation and reliability of the device can only be guaranteed if the device is not subjected to any other climatic conditions than those stated under “Specification”.
   If the device is transported from a cold to a warm environment condensation may cause in a failure of the function. In such a case make sure the device temperature has adjusted to the ambient temperature before trying a new start- up.

2. If there is a risk whatsoever involved in running it, the device has to be switched off immediately and to be marked accordingly to avoid restarting.
   Operator safety may be a risk if:

   • there is visible damage to the device
   • the device is not working as specified
   • the device has been stored under unsuitable conditions for a longer time.
     In case of doubt, please return device to the manufacturer for repair or maintenance.

3. When connecting the device to other devices the connection has to be designed most thoroughly as internal connections in third-party devices (e.g. connection GND with protective earth) may lead to undesired voltage potentials that can lead to malfunctions or destruction of the device and the connected devices.

4. This device must not be run with a defective or damaged power supply unit.
   Danger to life due to electrical shock!
   Do not use these products as safety or emergency stop devices or in any other application where failure of the product could result in personal injury or material damage.
   Failure to comply with these instructions could result in death or serious injury and material damage.

Product Specification

Scope of supply

The scope of supply includes Device GMH3350, incl. 9V battery block Operation manual

Operation and maintenance advice

• Battery operation: If ‘bAt’ is shown in the lower display the battery has been used up and needs to be replaced. However, the device will operate correctly for a certain time. If ‘bAt’ is shown in the upper display the voltage is too low to operate the device; the battery has been completely used up.

• The battery has to be taken out, when storing device above 50 °C. We recommend taking out battery if device is not used for a longer period of time. After recommissioning the real-time clock has to be set again.

• Mains operation with power supply
  When using a power supply please note that operating voltage has to be 10.5 to 12 V DC. Do not apply overvoltage!! Cheap 12V-power supplies often have excessive no-load voltage. We, therefore, recommend using regulated voltage power supplies.

• Trouble-free operation is guaranteed by our power supply GNG10/3000. Prior to connecting the power supply to the mains makes sure that the operating voltage stated at the power sup-ply is identical to the mains voltage. Treat device and sensor carefully. Use only in accordance with above specification. (do not throw, hit against etc.). Protect plug and socket from soiling. Only use the specified sensors (p.r.t. chapter 4.3 “ Connections” on page 6).
  Connecting the instrument to others, may damaged the instrument and the probe.

• When connecting the TFS or STS – probe the connector may not lock correctly. In such case take the plug not at the casing but at the buckling protection at the end of the plug. If plug is entered correctly, it will slide in smoothly. To disconnect sensor/probe the interface or the power supply device, do not pull at the cable but at the plug.

• Switch off instrument to change sensors.

Handling

Display
Depending on the measuring probes/sensors connected the following measuring results can be displayed:

Special display elements

Messages at device startup
The device will show some messages at the startup depended on the configuration and the connected sensor. Further information about the displays can be founded in the chapter “system and error mes-sages” or by the display in the chapter “configuration”.
Note: the message display can be aborted by pressing any key (keys 2 – 6) after the segment test.

Pushbuttons

Connections

The mains socket is located at the left side of the instrument.
the following sensor types can be connected to the connection socket:

• TFS 0100 (atmospheric humidity and temperature T1)
• STS 020 (flow speed air, 0.55..20.00m/s)
• STS 005 (flow speed water, 0.05..5.00m/s)

Pop-up clip
Handling

• Pull at label “open” in order to swing open the pop-up clip.
• Pull at label “open” again to swing open the pop-up clip further.

Function

• The device with a closed pop-up clip can be plainly laid onto a table or attached to a belt, etc.
• The device with pop-up clip at position 90° can be set up on a table, etc.
• The device with pop-up clip at position 180° can be suspended from a screw or the magnetic holder GMH 1300.

Configuration

Note: Some menu items will be shown depending on the actual device configuration (e.g. there are some items disabled when the logger contains data). Please note the hints by the menu items.
For configuration of the device press -key for 2 seconds: the main menu of the configuration will be called up.
Use key ****to select a sub-menu, use the key to actually go into the selected sub-menu and to change parameters.
Use the keys and to set the individual value for the parameter. Press the key again to memorize the changes ant to change to the main menu.

Use key to leave the configuration.

Using the interface converter GRS3105 it is possible to connect several devices to a single interface. As a precondition the base addresses of all devices must not be identical. In case several devices are connected via one interface make sure to configurate the base addresses accordingly.

Measurements Using Combination Measuring Sensor TFS0100

The TFS0100 has been especially designed to carry out measurements of ambient temperature. All TFS0100-probes are interchangeable without recalibration being required. The scope of supply includes one sensor to meas-ure relative atmospheric humidity and another one to measure the ambient temperature T1.
rel. humidity r.H. [%] relative humidity measured in the tip of the probe. Resolution 0.1%

Ambient temperature T1
temperature measured in the tip of the probe. Resolution 0.1°C or 0.1°F.
Other values on display will be calculated by the measuring device (acc. to Mollier diagram):

Dew point temperature Td
Cold air cannot absorb as much steam as warm air. This means that the relative humidity increases as the temperature decreases. If 100% have been reached, the air is saturated with steam; another decrease in temperature results in part of the steam condensing to water, becoming visible as fog or precipitation (dew).
The dew point temperature indicates at which temperature a 100% saturation would be reached and as of when
“dew” can be expected.

Enthalpy h [kJ/kg]
Enthalpy refers to the energy content of air. This value always refers to dry air at 0° C. I.e. the energy content of air with a relative humidity of 0% and 0°C is 0kJ/kg. The warmer the air the higher the relative humidity, the higher the energy content. Therefore, more energy is required to heat up humid air than dry air.

All humidity and temperature values calculated from the measuring values refer to a standard atmospheric pressure of 1013 mbar. For measuring atmospheric air, the deviations do not have to be taken into account.
When taking measurements in pressure vessels or under similar conditions, the values have to be corrected in accordance with a suitable correction table.

Additional Measurements with NiCr-Ni-Surface Probe at T2:
Surface temperature T2
The second temperature channel can amongst other things be used to take measurements of surface temperatures.

Dew point distance Td
This measurement refers to measurements of T1, T2 and relative atmospheric humidity.
The combination sensor is used to measure the ambient air, whose condition is used to calculate the dew point Td. The surface sensor is used to measure surfaces within this ambient air, with Td stating the temperature difference between those measurements and the dew point.
Example: measuring the ambient temperature results in a Td of 5°C. As long as the surface temperature (T2) of a window exceeds 5°C ( Td > 0°C) the surface won´t sweat! When T2 falls below 5°C, ( Td < 0°C) it will sweat. Other examples for application: detection of ‘humid corners’, monitoring of heat exchangers, weather forecast etc..

Measurements Using Flow Measuring Probes STS005 / STS020

• Two types of measuring probes are available for flow speed measurements: Please note: -use STS 005 to measure water flow use STS 020 to measure air flow
• Incorrect use will result in incorrect measurements!
• Please observe max. measuring ranges for flow measurements!
• STS 005: 0.05 … 5.00 m/s (water)
• STS 020: 0.55 … 20.00 m/s (air)

Higher speeds may destroy the measuring head or may, at least, permanently influence measuring accuracy.
An arrow on the measuring head indicates the required flow direction.

Flow measuring probes are ‘free-jet calibrated’, i.e. the diameter of the flow channel has to be 5 times bigger than the diameter of the flow measuring head (= approx. 5 cm, otherwise measuring errors up to 40%).
When evaluating the measuring results please also note that in a channel the flow speed is usually higher in the middle of the channel than at its edges. Therefore, use appropriate tables to calculate air flow by means of flow speed.

Averaging for Flow Measurements
When taking flow measurements fluctuations tend to be quite high. To be able to display a stable measuring value two averaging functions have been integrated in the instrument.

Continuous Averaging
The average value displayed has been calculated from the past few measurements conducted during the averaging time set. After the instrument has been switched on the time remaining till expiration of the averaging time will be displayed at the bottom line of the display. The min. and max. values memorized refer to the minimum and/or maximum average value displayed.

Average Hold
As soon as the GMH3350 instrument has been switched on the device starts calculating the average flow value dur-ing the averaging time. During measuring the current measuring value will be shown in the top line of the display while the bottom line shows the remaining measuring time. As soon as measurements have been completed the average value will be displayed and the device will switch to the HOLD mode. The min. and max. values memorized refer to the minimum and/or maximum measuring value established during averaging.
To start a new measuring series press the key “Store” (key 6).

Additional Measurements with any NiCr-Ni-Temperature Probe at T2
Use temperature channel T2 to take measurements of medium temperature, for example. The value shown ist not an average value.

Notes to Special Functions

Zero Displacement (’Offset’)
A zero displacement can be carried out for each of the two temperature channels T1 (TFS0100 only) and T2:
temperature displayed = temperature measured – offset Standard setting: ‘off’ = 0.0°, i.e. no zero displacements will be carried out. The zero displacement is mainly used to compensate for sensor deviations. Unless ‘off’ is set, this value will be displayed shortly after the device is switched on; during operation it will be identified by means of the Corr-arrow in the display.

Display Correction Factor (’Corr’)
This factor is applied only to the NiCr-Ni-input T2.
temperature displayed [°C] = temperature measured [°C] Corr or temperature displayed [°F] = (temperature measured [°F]-32°F) Corr + 32°F Standard setting: ’off’ =1.000
This factor is used to compensate for losses of transfer in case of surface measurements, occurring if the object to be measured is extremely hot but will be cooled by lower ambient temperatures. The same can be true for sensors with a large mass. Unless ’off’ is set, this value will be displayed shortly after the device is switched on; during operation it will be identified by means of the Corr-arrow in the display.

Base Address (’Adr.’)
Using the interface converter GRS3105 it is possible to connect several instruments to a single interface. As a pre-condition, the base addresses of all devices must not be identical. In case several devices will be connected via one interface make sure to configure the base addresses accordingly.
Channel 1 will be addressed by the base address set, and channels 2 – 6 will have the following addresses.
(Example: base address 21 – channel 1 = 21, channel 2 = 22, …, channel 6 = 26)

Alarm
3 alarm settings are available: off (off), on with horn sound (on), on – no horn sound (no.So) Depending on the sensors in use there is the choice of which channel is surveyed by the alarm function.
If the alarm function (on, no.So) has been activated, an audible alarm signal will be given with the following cases:

• values have fallen below/exceeded the lower/upper alarm limits in the channel to be monitored
• FE 9 or FE11 at the channel to be monitored
• low battery
• FE 7: In case of a system error the horn will be sounded regardless of the alarm setting (even if alarm = off)

If one or more alarm settings have been fulfilled the “alarm” arrow will be shown in the display; in case of access via the interface the ’PRIO’-Flag will appear.

Real-Time Clock
The real-time clock is required to put logger data in a time order. If necessary please check the setting:

Setting via keys (p.r.t. configuration of the device): time (minutes . accurate), date, year.

Setting via interface: use suitable software (seconds – accurate) e.g. GSOFT3050.
The clock setting menu will be started automatically when the device is switched on again after a battery change.

Data Logger

• As soon as key “Store” (key 6) is pressed and ‘Func = Stor’ was chosen a data set will be stored.
• The data stored can either be observed on the display (prt. “How to Display Individual Values” below), or be read into a PC via the interface.
• When ‘CYCL’ is set and the logger has been started using key 6 (press for 2 seconds), data sets will be stored till the recording is either stopped or the logger memory is full.
• The logger cycle time can be set. Use the interface to input the data stored into a PC.

If the logger contains already data, the connected kind of sensor (STS005, STS020, TFS0100..) must not be changed. In such case the instrument would display “Sens Erro”. Functions like the read out of log-ger data or clear the memory are still accessible.

Storing of Individual Values: “Func Stor”

• Data set that can be stored: 99
• One data set consists of: measuring value of channel 1 – 6 and time + date
• Press “Store”-key to store current values. .St.XX. will be displayed for a short time, XX representing the number of the data set 1..99.

If the logger memory is full a warning will appear on the display:
(warning triangle permanently shown, cyclic display of “LoGG FuLL” and the current measuring value)
Upon pressing the “Store”-key (key 6) for 2 seconds the selection for deleting the logger memory will be displayed assumed that there are any logger data:

• delete all data sets delete data set recorded last

• do not delete (= cancel procedure)

Use the keys “ ” (key 2) or ” (key 5) to make a selection.
Use key “Quit” (key 6) to acknowledge selection.

How to Display Individual Values
Individual values can also be displayed without interface which is not possible with the cyclic logger function.
If there are data sets in the logger memory, the additional main menue .rEAd LoGG. will be offered upon call-up of the menu (press key “Set” (key 4) for 2 sec).
When the “ -key (key 3) is pressed the last data set will be displayed. Use “-key (key 3) to change over be-tween the values of one data set (channel 1 – 6, date/time).
To change over from one data set to another use the keys “ (key 2) or “ ” (key 5).

Cyclic Logger Function: “Func CYCL”

• Data sets that can be stored: 5400
• One data set consists of: measuring value of channel 1 – 6
• The cycle time is set during ’Device configuration’.
• Please Note: During long time recordings we suggest to use a mains adapter (GNG10/3000).

Start logger recording
Press “Store”-key (key 6) for 2 seconds to start recording. Then .St.XXXX. will be displayed for a short time for every logging; XXXX representing the number of the data set 1..5400.

If the logger memory is full a warning triangle will be shown on the display:
(warning triangle permanently shown, cyclic display of “LoGG FuLL” and the current measuring value)

Stop logger recording
Press “Store”-key (key 6) for a short time to stop recording. You will then be asked to acknowledge again:

• recording to be stopped

• recording to be continued

Use the keys “ (key 2) or “ (key 5) to make your selection. Use “Quit”-key (key 6) to affirm your selection. Please note: If you try to switch off the instrument in the cyclic recording mode you will be asked once again if the
recording is to be stopped. The device can only be switched off after the recording has been stopped as the Auto-Power-Off function is deactivated during recording.

Delete data in logger memory
Press “Store”-key (key 6) for 2 seconds to display the selection for deleting data, if any, in the logger memory:

Delete all data sets
do not delete (= cancel procedure)

Use the keys “ (key 2) or “ ” (key 5) to make your selection. Use “Quit”-key (key 6) to affirm your selection.

How to Calibrate Meas. of Rel. Humidity Using TFS 0100

Due to the natural aging process of the polymer humidity sensor we recommend to calibrate the sensor at least once a year to ensure optimum measuring accuracy. For optimum recalibration and linearity check, please return device to manufacturer. Use integrated calibration function for 2-point on-site calibration.
How to calibrate sensor with the calibration device GFN xx

The following humidity variables are acceptable for the automatic buffer detection

The calibration device GFN XX has been optimized for application with TFS 0100. To ensure highly accurate calibration, we recommend using these humidity variables only. For more detailed information please refer to the relevant operating manual.

Please note: Automatic temperature compensation during calibration
The rel. humidity to be found in the calibration equipment is quite often highly dependent on temperature. This dependence is automatically compensated for when calibrating with the integrated calibration equipment and automatic detection. In case you want to enter calibration values manually, make sure to enter the respective temperature with the values.

How to carry out calibration
Please note: the calibration is only possible, if the logger memory is empty.
Start calibration: press “CAL” (key 3) for 2 sec. (after more than 10 sec. the factory calibration will be set)
The display prompts you to measure the first humidity value. Use “Set”-key (key 4) to stop calibration whenever you want to. In such a case the last calibration before this one will be used.

1. Selection automatic detection / manual input

   • Press “CAL”-key (key 3) for a short time to switch over between the various possibilities existing:
   • automatic detection (acceptable humidity variables see above) Display will switch over between the acceptable variables.
   • manual input
   • If you want to use other humidity values than those provided in the automatic detection, please enter them here.
   • 0 … 100.0 %: input range for rel. atmospheric humidity.
   • (please note: Watch out for ‘Automatic temperature compensation during calibration’)

2. Calibration point 1

   • Put sensor in suitable calibration equipment.
   • As long as the individual values in the display for the automatic detection keep changing, a valid value could not be detected (humidity value measured may deviate from value set by manufacturer by approx. 10%).
   • In case of manual input, enter value here.
     As soon as the display stops blinking and changing between values, a stable value has been de-tected and can be taken over by means of the “Store”-key (key 6). Then the next calibration step will be displayed.

3. Calibration point 2

   • Put sensor into suitable calibration equipment prepared for the second humidity value. Precondition: If the first value was below 50%, this value has to be over 50% or vice versa. Except this, same procedure as above.
   • As soon as the display stops blinking and chang-ing between values, the measuring value can be taken over by means of the “Store”-key (key 6) and the calibration has been completed.
   • If error messages are displayed when calibrating the instrument, the old calibration keeps valid, the new calibration data are lost. Please refer to “Error and System Messages during TFS0100 Calibration” in chapter 11.3.

System And Error Messages

Messages at device startup

Message (display)
Description

segment test (8888 and all special sign’s/arrows) current time (CLOC xx:xx) identified sensor (tFS 0100, StS 005 or StS020) temperature offset of the TFS (display see chapter 0) flow – averaging procedure (AVG Hold or AVG Cont) flow – averaging period (display see chapter 0) temperature offset for NiCr-Ni- probe (display see chapter 0) display correction for NiCr-Ni-probe (display see chapter 0)

• only with TFS0100 and adjusted offset-value <> off only with STS…
• only with STS…
• only at adjusted offset-value <> off
• only at adjusted corr-value <> off

System and Error Messages

System and Error Messages during TFS0100 Calibration

The serial interface

By means of the serial interface and a suitable electrically isolated interface adapter (USB 3100, USB 3100 N, GRS 3100 or GRS 3105) the device can be connected to a computer for data transfer.
With the GRS 3105 up to 5 devices of the GMH3xxx- series can be connected to one interface (see also manual of GRS 3105). As a precondition the base addresses of all devices must not be identical, make sure to configure the base addresses accordingly (refer menu point “Adr.” in chapter 0).
To avoid transmission errors, there are several security checks implemented e.g. CRC.

The following standard software packages are available

• GMHKonfig: Software for a comfortable editing of the device (e.g. Material selection…)
• GSOFT3050 Software for temperature display and/or read out of logger data.
• EBS 20M / 60M: 20-/60-channel software to display the measuring values

In case you want to develop your own software we offer a GMH3000-development package including

• a universally applicable Windows functions library (‘GMH3000.DLL’) with documentation that can be used by the most programming languages. Suitable for Windows XP™, Windows Vista™, Windows 7™
• Programming examples Visual Basic 4.0™, Delphi 1.0™, Testpoint™

The following interface functions will be supported

For TFS 0100

1. Channel 1: rel atmospheric humidity Channel
2. 2: temperature T1 Channel
3. 3: temperature T2 Channel
4. 4: dew point temp. Td Channel
5. 5: dew point distance Td Channel
6. 6: enthalpy h

For STS 005 / STS 020:

1. Channel 1: flow speed
2. Channel 3: temperature
3. T2 Channel 2, 4, 5, 6:

not supported

For NiCr-Ni (without TFS../STS..) Channel 3: temperature T2 Channel 1, 2, 4, 5, 6:
not supported Logger handling still works with channel 1.

1. only when alarm is activated for refering channel
   configuration flags: 50:0 = logger off, 1 = logger on

2. 51: 0 = manual logger, 1 = cyclic logger

3. only when logger function = CYCL, data present and logger stopped.

4. only when logger function = CYCL

5. only when logger function = CYCL and no data in memory

6. only when logger function = Stor, or logger function = CYCL and no data in memory

7. only when logger is activated (CYCL or Stor)

8. only when logger function = Stor and data in memory13

Reshipment and Disposal

Reshipment

All devices returned to the manufacturer have to be free of any residual of measuring media and other hazardous substances. Measuring residuals at housing or sensor may be a risk for persons or envi-ronment
Use an adequate transport package for reshipment, especially for fully functional devices. Please make sure that the device is protected in the package by enough packing materials.

Disposal instructions

Batteries must not be disposed in the regular domestic waste but at the designated collecting points.
The device must not be disposed in the unsorted municipal waste! Send the device directly to us (suffi-ciently stamped), if it should be disposed. We will dispose the device appropriate and environmentally sound.

Specification

• Measuring ranges with TFS 0100 E probe
• Humidity 0.0 … 100.0 % relative atmospheric humidity (resolution 0.1 % RH)
• Ambient temperature -40.0 … +120.0 °C (0.0…60.0°C with TFS0100) (resolution 0.1 °C / 0.1 °F)
• Surface temperature -80.0 … +250.0 °C (resolution 0.1 °C / 0.1 °F)

Units calculated

• Dew point temperature -40.0 … +70.0 °C (resolution 0.1 °C / 0.1 °F)
• Dew point distance -200.0 … +290 °C (resolution 0.1 °C / 0.1 °F)
• Enthalpy 0 … 250 kJ/kg (resolution 0.1 kJ/kg)
• Measuring ranges with STS 005 or STS 020 probes
• Flow speed depending on probe (resolution 0.01 m/s)
• Temperature -80.0 … +250.0 °C (resolution 0.1 °C / 0.1 °F)
• Accuracy device (± 1digit) (at nominal temperature)
• Rel. atmospheric humidity ± 0.1%
• Ambient temperature T1 ± 0.2%
• Surface temperature T2 ± 0.5% of m.v. ± 0.5°C
• Flow speed ± 0.1%
• Surface temperature input T2 (NiCr-Ni, type “K”)
• Comparison point ± 0.5°C
• Temperature drift 0.01%/K
• Averaging of flow speed
• Averaging period 1 .. 30 seconds
• Nominal temperature 25 °C
• Working temperature -25 … +50 °C
• Relative humidity 0 .. 95 RH (non-condensing)
• Storage temperature -25 … +70 °C
• Housing 142 x 71 x 26 mm (L x W x D), impact-resistant ABS plastic housing, membrane key-board, transparent panel. Front side IP65, integrated pop-up clip for table top or sus-pended use.
• Weight approx. 160 g
• Interface serial interface (3.5mm jack), serial interface can be connected to RS232 or USB inter-face of a PC via electrically isolated interface converter GRS 3100, GR 3105, USB 3100 or USB 3100N (accessories).
• Power supply: 9V-battery, type IEC 6F22 (included) or additional d.c. connector (internal pin Ø 1.9 mm) for external 10.5-12V direct voltage supply. (suitable power supply: GNG10/3000)
• Power consumption approx. 2.5 mA (incl. TFS0100)
• Display 2 four digit LCDs (12.4mm high and/or 7 mm high) for measuring values, and/or for min./ max values, hold function, etc. as well as additional pointing arrows.
• Pushbuttons 6 membrane keys altogether for on/off switch, selection of thermoelements, min. and max. value memory, hold-function etc.
• Min-/max-value memory Both the max. and the min. value will be memorized for each measurement taken
• Hold-function Press button to store current measuring values
• Min./max alarm min. and max. values set for measuring values of channel 1, channel 2, channel 3, channel 4, channel 5 or channel 6 are constantly monitored.
• Alarm functions min- / max-alarm, alarm via integrated horn, display and interface.
• Logger function: 2 logger functions: individual value logger (Store) and cyclic logger (Cycle)
• Memory size: Store: max. 99 data sets, Cycle: max. 5400 data sets
• Cycle time: Cycle: 1 up to 3600 seconds
• Real time clock Clock with date and year (integrated in device)
• Automatic-off-function Device will be automatically switched off if no key is pressed/no interface communica-tion takes place for the time of the power-off delay. The power-off delay can be set to values between 1 and 120 min.; it can be completely deactivated.
• EMC: The device corresponds to the essential protection ratings established in the Regula-tions of the Council for the Approximation of Legislation for the member countries re-garding electromagnetic compatibility (2004/108/EG). Additional fault: <1%

References

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