APERA SX811-SS Portable pH Meter for Food Testing Instruction Manual
- June 3, 2024
- APERA
Table of Contents
SX811-SS Portable pH Meter for Food Testing
SX811-SS Portable pH Meter for Food Testing
Instruction Manual
APERA INSTRUMENTS (Europe) GmbH
www.aperainst.de
V2.1
1 Brief Introduction ………………………………………………………………………………………………- 1 1.1
Features………………………………………………………………………………………………………………. – 1 1.2 Features of the
LabSen 753 Spear pH Electrode…………………………………………………………… – 1 1.3 Proper use and
maintenance of the LabSen 753 Electrode …………………………………………….. – 1 –
2 Technical Specifications……………………………………………………………………………………….- 2 2.1 Instrument
Technical Specs……………………………………………………………………………………… – 2 2.2 Others
………………………………………………………………………………………………………………… – 2 2.3 Electrode Technical Specs
……………………………………………………………………………………….. – 2 –
3 Instrument Description ……………………………………………………………………………………….- 3 3.1 LCD Display
………………………………………………………………………………………………………….. – 3 3.2 Keypad
……………………………………………………………………………………………………………….. – 4 3.3 Display mode
……………………………………………………………………………………………………….. – 5 3.4 Data storage, recall, and
delete………………………………………………………………………………… – 5 –
4 pH Measurement……………………………………………………………………………………………….- 6 4.1 Information
regarding pH Calibration………………………………………………………………………… – 6 4.2 pH Calibration
(use 3-point, USA Standard as an example)…………………………………………….. – 9 4.3
Customized Calibration…………………………………………………………………………………………. – 10 4.4 Sample
test………………………………………………………………………………………………………… – 10 –
5 mV measurement ……………………………………………………………………………………………. – 12 5.1 ORP measurement
………………………………………………………………………………………………. – 12 5.2 Notes of ORP measurement
………………………………………………………………………………….. – 12 –
6 Parameter Setup ……………………………………………………………………………………………… – 13 6.1 Main menu
………………………………………………………………………………………………………… – 13 6.2 Submenu
…………………………………………………………………………………………………………… – 13 6.3 Submenu of pH parameter
setup (press M+ key or RM key to switch) ……………………………. – 14 6.4 Submenu of
basic parameter setup (press M+ key or RM key to switch)…………………………. – 15 –
7 USB Communication ………………………………………………………………………………………… – 16 7.1 System
Requirement ……………………………………………………………………………………………. – 16 7.2 Software Interface
………………………………………………………………………………………………. – 16 7.3 Load software
…………………………………………………………………………………………………….. – 17 7.4 Automatic connection
port……………………………………………………………………………………. – 17 7.5 Run software
……………………………………………………………………………………………………… – 17 7.6 Storage during
operation………………………………………………………………………………………. – 17 7.7 Data
processing…………………………………………………………………………………………………… – 18 –
8 What’s in the box…………………………………………………………………………………………….. – 18 –
9 Warranty ……………………………………………………………………………………………………….. – 18 –
10 Appendix…………………………………………………………………………………………………….. – 19 10.1 Appendix I:
Parameter setup and factory default setup……………………………………………. – 19 10.2 Appendix
II: Abbreviation glossary ……………………………………………………………………. – 20 10.3 Appendix III:
Self-diagnosis information …………………………………………………………….. – 20 –
11 Recommended pH Electrodes for Specific Applications………………………………………… – 21 –
1 Brief Introduction
Thank you for purchasing the Apera Instruments SX811-SS portable food pH
meter. This device is an outstanding combination of advanced electrical,
sensor technology and software design. The meter is equipped with LabSen753
spear pH electrode, suitable for testing meat, bread, fruit, and dairy
products such as cheese, yogurt and other solid or semi-solid food sample’s pH
value. It could also be used for testing soil and regular aqueous solutions.
1.1 Features
· This microprocessor-based meter features automatic calibration, automatic
temperature compensation (ATC), menu set-up, calibration reminder, calibration
date checking, automatic powe-off and low-battery warning.
· GLP data managementclock display, manual storage and automatic timing
storage, USB port and power outage data protection, your data is safe even
with a dead battery.
· Advanced digital processing technology improvs meter responding time and
accuracy. There are reading stability display mode and automatic lock-up
display mode.
· IP57 waterproof, operable under extreme conditons. Powered by 3x AA
batteries or USB connection to other power source. Solid and durable
caseaccessories are included.
· 1-3 points automatic calibration, calibration guide and self diagnose. ·
Automatically recongnize pH standard buffer solutions.
1.2 Features of the LabSen 753 Spear pH Electrode
Swiss pH sensor technology Food grade stainless steel housing, solid and
durable
Using solid electrolyte as reference solution, it does not contanminate test
samples, suitable for
samples that are rich in fat and proteins.
1.3 Proper use and maintenance of the LabSen 753 Electrode
a) After each test, the electrode must be rinsed thoroughly with distilled
water to prevent contamination. If the contaminents (such as grease or stains)
cannot be rinsed off easily, users can use a soft brush with soap water to
clean them off.
b) This electrode needs to be stored in the Polymer solution when not in use.
Do not store the electrode in dry environment. The Polymer solution (50ml) is
provided with the meter kit. Replace the polymer solution in the probe cap if
contaminated.
c) pH electrodes age and gradually lose accuracy over time. We recommend
replacing the aged electrode with a new one after 1-year of regular use to
ensure the best accuracy.
d) To prevent damaging the electrode, please bore a hole (with a knife) in
hard samples and then insert the electrode into the hole for testing.
e) To prevent rusting, please do not scratch the stainless-steel casing of the
electrode with sharp object or sand paper.
– 1 –
2 Technical Specifications
2.1 Instrument Technical Specs
Range
Resolution
pH
Accuracy
Technical Specs -2.00 to 19.99 pH 0.01/0.1 pH ±0.01 pH ±1 digit
Temperature Compensation
0 to 100 °C (Auto or Manual)
Range
mV
Resolution
Accuracy
-1999 mV – 0 – 1999 mV – 200 mV – 0 – 200 mV: 0.1 mV; Remaining: 1 mV
±0.1% F.S ±1 digit
Range
0 to 100°C (32 to 212°F)
Temp.
Resolution
0.1°C
Accuracy
±0.5°C ±1 digit
2.2 Others
Data Storage
500 groups
Storage Content
Output
Power
IP Ranking Dimensions&
Weight
Numbering, date, time, measurement, unit, temperature
USB AA Batteries * 3 / DC5V (USB port)
IP57 dust-proof and waterproof Meter: (88×170×33 ) mm/ 313g With
case(360×270×76) mm/ 1.6kg
2.3 Electrode Technical Specs
Housing Material
Temperature sensor Junction
Reference Electrode Electrolyte
Shape of glass membrane Range
Temperature Range Connector
Food grade stainless steel
Yes Single Junction Ceramic Long-Life Reference System
Polymer Spear 0 to 14 pH 0 to 80°C (32 to 176°F) BNC and RCA
– 2 –
3 Instrument Description 3.1 LCD Display
(1) — Measurement mode icons
Diagram-1
(2) — Measurement value
(3) — Timing storage icon. When this icon appears, the meter is in the automatic storage mode
(4) — Date and time display value, and prompts of special display mode
(5) — Units of Date and time
(6) — Units of measurement
(7) — Temperature units (°C and °F)
(8) — Units of pH and conductivity calibration value
(9) — pH and conductivity calibration value, the numbering for storage and recall, and prompts of
special display mode
(10) — Storage and recall icons
M+ — Measurement to be stored icon, RM — Reading to be recalled icon
(11) — Temperature value and prompts of special display mode
(12) — Automatic reading lock-up icon
(13) — Temperature compensation icons
ATC — automatic temperature compensation, MTC — manual temperature compensation
(14) — Calibration guide icon
(15) — Stability icon of readings
(16) — USB iconwhen this icon appears, the meter connects the computer
(17) — Low battery icon, when this icon appears, please renew the battery
– 3 –
3.2 Keypad
Diagram-2
3.2.1. Keypad operations
Short press —– <1.5 seconds, Long press —– >1.5 seconds.
3.2.2. Turn on the meter
Press to turn on the meter: LCD full display display the measurement mode (backlight for one
minute).
3.2.3. Turn off the meter
Only in the measurement mode, press
to turn off the meter.
Note: In the calibration mode or the parameter setup mode, pressing
is invalid. Please
press
key to return to the measurement mode, then press
to turn off the meter.
Keypad
Operations Short press Short press Long press
Table 1 Keypad operations and descriptions
Descriptions
Press this key to turn on or turn off the meter.
Select measurement parameters:
pH meter:
In measurement mode, press this key to enter main menu.
Short press
In measurement mode, press this key to enter in calibration mode
In recall mode (RM), press this key to return to measurement mode
Cancel any operation to return to measurement mode.
Short press
In measurement mode, press this key to turn on or turn off
backlight In calibration mode, press this key to conduct calibration In main
menu, press this key to enter submenu In submenu, press this key to enter
parameter set-up
mode In parameter set-up mode, press this key to confirm parameters.
– 4 –
Long press
In pH measurement mode, press and hold this key to change the resolution repeatedly: 0.01 0.1pH
Short/ long press
In the mode of manual temperature compensation (MTC), when press
and hold this key, the temperature value flashes, then press this key to
change the temperature value, and press
to confirm
In measurement mode, press
to store the measuring value,
press to recall the stored measuring value
In recall mode (RM), short press this key to change the
storage numberings, press and hold this key to change the number
quickly
In the main menu and submenu mode, press this key to change the
numbering of the main menu and the submenu
In the parameter set-up mode, press this key to select parameters.
3.3 Display mode
3.3.1 Reading stability display mode
When the measuring value is stable, smiley icon appears on LCD, see Diagram
3. If icon does not appear or flash, please do not get the reading value or
make calibration until the measuring value is stable.
3.3.2 Automatic lock-up display mode
Select On from parameter P4.6 to turn on automatic lock-up display function.
When the reading value stabilizes more than 10 seconds, the meter locks the
measuring value automatically and displays HOLD icon, see Diagram 4. In the
HOLD mode, press to release lock-up.
3.4 Data storage, recall, and delete
3.4.1 Manual storage
When the measurement is stable, press
key, the meter displays
M+ icon and storage serial number on LCD, storing measuring information, see Diagram 5: the meter stores the first group of the measuring value.
3.4.2 Automatic timing storage
Set the storage timing (eg. 3 minutes) from parameter P4.1, icon appears on
LCD and the meter enters into the timing storage
mode. When press key, icon flashes and the first measuring value is stored.
After 3 minutes, the 2nd measuring value is stored. See Diagram 6: the meter
stores automatically eight measuring values. When press key, icon stops
flashing and the meter stops automatic storage. In automatic storage mode,
manual storage does
– 5 –
Diagram – 3 Diagram – 4 Diagram – 5 Diagram – 6
not work. Set time 0 from parameter P4.1 to exit from the automatic storage mode.
3.4.3 Recall stored data
In the measurement mode, press
key to recall the last stored measuring
value. See Diagram 7: display RM icon and storage serial number. Continue
pressing key and key to recall successively the stored measuring
value. Press and hold key and key to recall quickly the stored
measuring value.
3.4.4 Clear stored data
Select YES from parameter P4.5 to clear all stored value, refer to the Section
6.4.
Diagram – 7
4 pH Measurement
4.1 Information regarding pH Calibration 4.1.1 Things needed in addition to
what’s included in the kit
A clean cup, distilled water (8-16oz), and tissue papers for rinsing and
drying the probe.
4.1.2 Electrode Connectors
The pH electrode has two connectors: the BNC connector connects the pH probe;
the RCA connector connects the temperature sensor. Plug these two connectors
into `pH/mV” and “TEMP” sockets. Please note not to pull the cables in case of
poor contact. Please keep the connectors clean and dry. Refer to section 1.3
regarding how to properly maintain the pH electrode.
4.1.3 Use the Electrode
Screw off the probe cap, and put it aside (do not dump or spill the polymer
solution). Prepare a cup of distilled water, and rinse the electrode in it for
a few seconds. Gently shake the probe to remove excess water, and dry it with
clean tissue paper (DO NOT rub or wipe the probe, just use paper to dap off
excess water). Gently insert the probe into the test sample (if sample is too
hard, bore a hole in the sample and insert the probe in the hole). Wait for
the stable measurement (a smiley face appears and stays) and then record the
readings. When test is finished, rinse the probe with distilled water, and
place the electrode in the probe cap with polyer solution and tighten the cap
so as to keep the sensitivity of the pH sensor.
4.1.4 Standard Buffer Solution
The meter adopts 3 series of standard buffer solutions: USA, CH, and NIST.
They can be selected in parameter P1.1 (see Section 6.3) as showed in Table-2
(default standard series is USA)
– 6 –
Calibration icon
3-Point calibration
Table-2 pH standard buffer series
USA
CH
1.68 or 4.00 pH
1.68 or 4.00 pH
7.00 pH
6.86 pH
10.01 pH
9.18 pH
NIST 1.68 or 4.01 pH
6.86 pH 9.18 pH
4.1.5 3-Point Calibration
The meter can adopt 1 to 3 points’ calibration. The 1st point must be using
7.00 pH (or 6.86 pH) buffer solution, and then choose other buffers to do 2nd
point and 3rd point. Please refer to Table-3 for details. In the process of
calibration, the slope of acidity range and alkalinity range will be
displayed.
Table-3 Calibration Mode
CH
USA
NIS
Calibration icon
When to adopt
1-Point Calibration
6.86 pH
7.00 pH
6.86 pH
accuracy ±0.1 pH
6.86 pH and
7.00 pH and
6.86 pH and
2-Point
4.00/1.68 pH
4.00/1.68 pH
4.01/1.68 pH
Calibration
6.86 pH and 9.18 pH
7.00 pH and 10.01 pH
6.86 pH and 9.18 pH
3-Point Calibration
6.86pH, 4.00/ 1.68 pH, and
9.18 pH
7.00pH, 4.00/ 1.68 pH and 10.01 pH
6.86pH, 4.01/ 1.68pH, 9.18 pH
0 to 7.00 pH
7.00 to 14.00 pH
0 to 14.00 pH
4.1.6 How often to calibrate
The frequency that you need to calibrate your meter depends on the tested
samples, performace of electrodes, and the requirement of the accuracy. For
high-accuracy meaustements ( ±0.02pH), the meter should be calibrated before
test every time; For ordinary-accuracy measurements (±0.1pH), once calibrated,
the meter can be used for about a week or longer. In the following cases, the
meter must be re-calibrated before testing: a) The electrode hasn’t been used
for a long time or a new electrode is connected. b) After measuring strong
acid (pH<2) or strong base (pH>12) solutions. c) After measuring fluoride-
containing solution and strong organic solution d) There is a significant
difference between the temperature of the test sample and the temperature of
the buffer solution that is used in the last calibration.
– 7 –
4.1.7 Calibration reminder
Preset the interval between calibrations (starting from the time when you set
it), and then the meter will remind you to calibrate at the end of that
interval. For detailes, please see P1.2 (6.3). When the preset time is
reached, Er6 icon will be displayed at the lower right corner of the LCD (as
showed in graph-8). At the time, the meter can still be operated. It is just
reminding you to do calibration in order to ensure its accuracy. After
calibration, the Er6 icon will disappear; To make it disappear, users can also
choose NO in P1.2 in parameter setting.
Diagram-8
4.1.8 Check calibration time
In this mode, users can see the date and time of last calibration so as to
help them determine if there is need to calibrate. For details, please see
parameter setting P1.3 (6.3)
4.1.9 Change temperature manually
When temperature electrode is not connected, long press or , the temperature
will flash, and then short press or long press or to change temperature, press
to confirm.
– 8 –
4.2 pH Calibration (use 3-point, USA Standard as an example)
-
Press to enter calibration mode. CAL1 icon will flash in the upper right corner of the LCD. 7.00 pH will flash in the lower right corner of the LCD, reminding you to use pH 7.00 buffer to conduct 1st point of calibration.
-
Use distilled water to rinse off electrode and then dry it. Dip it into pH 7.00 buffer solution, stir gently and let it stand still and wait for the reading to become stable. In the lower right corner of LCD, the process of auto recognizing the buffer solution will be displayed. Pressing before the buffer is recognized will generate Er2 (please refer to table 6).
-
When the meter locks 7.00 pH, stable icon displays on LCD. Press key to calibrate the meter. End icon appears after calibration is done.
The 1st point calibration is finished. In the meanwhile, CAL2 will flash at the upper right corner, and 4.00 pH & 10.01 pH will flash alternately at the bottom right, indicating using pH4.00 or pH10.01 buffer solution to make the 2nd point calibration. -
Take out pH electrode, rinse it in distilled water, dry it, and dip it into pH 4.00 buffer solution. Stir the solution gently and let stand still in the buffer solution until a stable reading is reached. The meter’s display will show the recognition process of calibration buffer solution at the lower right of LCD. When the meter recognizes 4.00 pH, stable icon displays on LCD. Press key to calibrate the meter. End icon and electrode slope of acidity range display after calibration is done. In the meanwhile, CL3 will flash at the upper right corner of the LCD, and 10.01 pH will flash at the lower right, indicating using pH10.01 buffer solution to make the 3rd point calibration.
-
Take out pH electrode, rinse it in distilled water, dry it, and dip it into pH 10.01 buffer solution. Stir the solution gently and let it stand still in the
Diagram – 11
buffer solution until a stable reading is reached. The meter’s display will show
recognition process of calibration buffer solution at the bottom right of
LCD. When the meter recognizes 10.01 pH, stable icon displays on LCD. Press
key to calibrate the meter. End icon and electrode slope of alkalinity range
display after calibration is done. The meter returns to the measurement mode, displays stable measuring
value and calibration guide icons. Please see Diagram11 for the above calibration process.
- During the calibration process, press
key to exit from the calibration mode. The meter can perform
– 9 –
one-point, two-point and three-point calibration. Calibration guide icons
appear on LCD.
4.3 Customized Calibration
(take 1.60pH and 6.50pH calibration solution as an example) 1) Select CUS from
parameter P1.1 (please refer to Section 6.3 for customer-defined solution).
The meter enters into Customer-defined calibration mode. When press key, the
meter’s display shows a blinking CAL1 icon at the top right of LCD, indicating
the meter enters into the 1st point customer-defined calibration.
2) Rinse pH electrode in distilled water, allow it to dry, and submerge it in
pH1.60 buffer solution. Stir the solution briefly and allow it to stay in the
buffer solution until a stable reading is reached. When LCD displays the
stable measuring value and icon, press key and the measuring value flashes.
Press key or key to adjust the measuring value to 1.60, then press key to
calibrate the meter. After calibration is done, LCD at the top right shows
blinking CAL2 icon, indicating the meter enters into the 2nd point customer-
defined calibration.
3) Rinse pH electrode in distilled water, allow it to dry, and submerge it in
pH 6.50 buffer solution. Stir the solution briefly and allow it to stay in the
buffer solution until a stable reading is reached. When LCD displays the
stable measuring value and icon, press key and the measuring value flashes.
Press key or key to adjust the measurement value to 6.50, then press key to
calibrate the meter. After calibration is done, the meter returns to the
measurement mode. For customer-defined calibration, LCD does not show
electrode calibration guide icons. Note: For manual temperature compensation
(MTC), when press key, the temperature value flashes. Press key or key to
adjust the temperature value, and then press key, pH measuring value flashes.
4) Notes (a) The meter can perform 1-2 point customer-defined calibration.
When the 1st point calibration is done, press key, the meter exits from
calibration mode. This is one-point customer-defined calibration. When the 2nd
point calibration is done, the meter returns to the measurement mode
automatically.
(b) The value set in “Customer-defined” is at a fixed temperature. The meter
is suggested to perform calibration and measurement at the same temperature to
avoid significant errors. The meter cannot recognize customer-defined
calibration solution automatically.
4.4 Sample test
- Rinse pH electrode in distilled water, dry it, and dip it in sample
solution. Stir the solution gently and let it stand still in the sample
solution until the stable value and icon appears on LCD, get the reading which
is pH value of sample solution, please refer to Diagram-12 for calibration and
measurement process of pH meter.
Diagram 12 Calibration and measurement process of pH meter
– 10 –
Press to turn on the meter.
Press key to enter into the
calibration mode.
Submerge the electrode in pH7.00 solution, press key when icon appears.
Submerge the electrode in pH4.00 solution, press key when icon appears.
Submerge the electrode in pH10.01 solution,press key when icon appears.
After the 1st point calibration is done, press key to enter into the measurement mode.
1st point calibration
After the 2nd point
calibration is done, 2ndpoint calibration
press key to
Sample
enter into the
Test
measurement mode.
After the 3rd point calibration is done, the meter enters into the measurement mode automatically.
3rdpoint calibration
-
pH measurement of purified water The meter is able to set up pH measurement mode of purified water with temperature compensation for pH value from parameter setup P1.5 (please see Section 6.3). “PU-1” icon displays at the right top of LCD, please refer to Diagram 13.
-
pH measurement of purified water mixed with ammonia The meter is able to set up pH measurement mode of purified water mixed With ammonia with temperature compensation for pH value from parameter setup P1.6 (please see Section 6.3). “PU-2” icon displays at the right top of LCD, please refer to Diagram 14.
Diagram – 13
Note: In parameter setup, either “PU-1” or “PU-2” measurement mode can be selected, but both can not work at the same time.
Diagram – 14
- Self-diagnosis information During the process of calibration and measurement, the meter has self-diagnosis functions, indicating the relative information as below, please refer to chart 6.
Display Icons
Chart 6 Self-diagnosis information of pH measurement mode
Contents
Checking
1.Check whether pH buffer solution is correct.
Wrong pH buffer solution or the buffer 2.Check whether the meter connects the electrode
solution out of range.
properly.
3.Check whether the electrode is damaged.
Press key when measuring value is not stable during calibration. During calibration, the measuring value is not stable for 3min.
Press key when icon appears.
1.Check if the electrode is damaged. 2.The pH electrode is aged. Replace a new
one.
– 11 –
pH electrode zero electric potential out of range<-60mV or >60mV pH
electrode’s slope is out of range
<85% or >110%
1.Check whether pH buffer solution is correct. 2. Check if electrode is damaged. 3.The pH electrode is aged. Replace a new one.
Enter in pre-set due calibration to remind calibration
Press key to perform calibration or cancel due calibration setup from parameter P1.2.
- pH isothermal principle
According to the pH isothermal measurement principle, the closer the test sample’s temperature is to the calibration solution’s, the higher the accuracy of the measurement. This principle is recommended to follow when conducting tests for the best result. Example: If users were to test samples at 150°F, we recommend warming up the calibration solutions to the same temperature before performing calibrations in order to get the most accurate readings.
*The electrode can only test samples that are below 176°F. Testing higher-temperature samples may cause permanent damage to the electrode.
6) Factory default setting For factory default setting, please refer to
parameter P1.6 (Section 6.3). Per parameter P1.6, all calibration data is
deleted and the meter restores to the theory value (zero electric potential of
pH is 7.00, the slope is 100%). Some functions restore to the original value
(refer to Appendix-I). When calibration or measurement fails, please restore
the meter to factory default setting and then perform re-calibration or
measurement. Please note once set the factory default, all the data deleted
will not be retrievable.
5 mV measurement
5.1 ORP measurement
Press key, and switch the meter to mV measurement mode. Connect ORP electrode
(need purchase it separately) and dip it in sample solution, stir the solution
briefly and allow it to stay in the solution until icon appears and get the
reading which is ORP value. ORP means Oxidation Reduction Potential. The unit
is mV.
5.2 Notes of ORP measurement
- ORP measurement does not require calibration. When the user is not sure about ORP electrode quality or measuring value, use ORP standard solution to test mV value and see whether ORP electrode or meter works properly.
- Clean and activate ORP electrode After the electrode has been used over a
long period of time, the platinum surface will get polluted which causes
inaccurate measurement and slow response. Please refer to the following
methods to clean and activate ORP electrode: (a) For inorganic pollutant,
submerge the electrode in 0.1mol/L dilute hydrochloric acid for 30 minutes,
then wash it in distilled water, then submerge it in the soaking solution for
6 hours.
– 12 –
(b) For organic or lipid pollutant, clean the platinum surface with detergent, then wash it in distilled water, then submerge it in the soaking solution for 6 hours. (c) For heavily polluted platinum surface on which there is oxidation film, polish the platinum surface with toothpaste, then wash it in distilled water, then submerge it in the soaking solution for 6 hours.
6 Parameter Setup
6.1 Main menu In the measurement mode, press and hold key to enter in mode
P1.0, then press or to switch among main menu: P1.0P2.0P3.0P4.0. Please refer
to Diagram 20. P1.0: pH parameter setup menu, P4.0: Basic parameter setup
menu.
6.2 Submenu 1) In P1.0 mode, press key to enter in submenu P1.1 of pH
parameter setup, then press and key to switch among submenu: P1.1P1.2…P1.6,
refer to Diagram 20.
- In P4.0 mode, press key to enter in submenu P4.1 of basic parameter setup, then press and key to switch among submenu: P4.1P4.2…P4.8, refer to Diagram 20
Main menu of parameter setup
Diagram -20
Submenu of pH parameter setup
P1.1 Select pH standard solution series P1.2 Set calibration due date P1.3
Check date of last calibration P1.4 Set pH measurement of purified water P1.5
Set pH measurement of pure
water mixed with ammonia P1.6 Restore to factory default setting
Submenu of basic parameter setup P4.1 Adjust timing storage time P4.2 Select
temperature unit P4.3 Select backlight time P4.4 Select auto. power-off time
P4.5 Clear stored value P4.6 Set auto. lock-up function P4.7 Adjust date P4.8
Adjust time
– 13 –
6.3 Submenu of pH parameter setup (press or key to switch)
P1.1. Select pH standard solution (USA-NIST-CUS-CH) 1. In P1.0 mode, press
to enter in P1.1 mode, refer to the left diagram. 2. When press key,USA
flashes,then press key, NIST flashes,etc.
When parameter flashes, press to make confirmation(USA USA series, NISNIST
series, CUScustomer-defined, CHChinese series) 3. Press key to enter in P1.2
mode, or press key to return to the measurement mode. P1.2. Set due
calibration (NO H00 D00) 1. When press key, No flashes, then press key, H
flashes, then press key, D flashes. 2. When H flashes, press key, 00 flashes.
Press key to adjust hours (0-99 hours), press key to confirm. When D flashes,
press
key, 00 flashes. Press key to adjust days (0-99 days), press key to confirm.
When No flashes, press to confirm. 3. After confirming parameter, press key to
enter in P1.3 mode, or press key to return to the measurement mode.
P1.3. Check the time and date of the last calibration 1. The time and date
of calibration displays alternately at right top of LCD
(Date display: Month Day), the number in the LCD middle displays Year (Year
2012). 2. Press key to enter in P1.4 mode, or press key to return to the
measurement mode. P1.4. Set pH measurement of distilled water (Off On) 1.
Press key, Off flashes, then press key, On flashes, when parameter flashes,
press key to confirm. Offturn off temperature compensation, On turn on
temperature compensation. 2. After confirming parameter, press key to enter in
P1.5 mode, or press key to return to the measurement mode.
P1.5. Set pH measurement of distilled water with ammonia (Off On) 1. Press
key, Off flashes, then press key, On flashes, when
parameter flashes, press key to confirm. Offturn off temperature
compensation, Onturn on temperature compensation. 2. After confirming
parameter, press key to enter in P1.6 mode, press
key to return to the measurement mode. P1.6. Restore to factory default
setting (NO Yes) 1. Press key, No flashes, then press key, Yes flashes.
Press
key to confirm, the meter returns to the measurement mode. No Not restore to
factory default setting, Yes restore to factory default setting. 2. When do
not select Yes, press key to return to the measurement mode.
– 14 –
6.4 Submenu of basic parameter setup (press key or key to switch)
P4.1. Adjust timing storage time 1. In mode P4.0, press key to enter in mode
P4.1, refer to the left
diagram: “00:”: hours (0-99), “:00”: minutes (0-59). 2. Press key, “:00”
flashes, then press key, “00:” flashes. When the
number flashes, press key and key to adjust time and press key to confirm. 3.
After confirming the parameter, press key to enter in P4.2 mode or press key
to return to the measurement mode.
P4.2. Select temperature unit (°C–°F). 1. Press key, °C flashes, then press
key, °F flashes. When the
parameter flashes, press key to confirm. 2. After confirming the parameter,
press key to enter in P4.3 mode or
press key to return to the measurement mode.
P4.3. Select backlight timing (1-2-3-On) 1. When press key, “1” flashes,
then press key to select blinking
23On. When the parameter flashes, press key to confirm.
Select On to turn on the backlight, the time unit is minute. 2. After
confirming the parameter, press key to enter in P4.4 mode or
press key to return to the measurement mode.
P4.4. Select automatic power-off time (10-20-30-On) 1. Press key, “20”
flashes, then press key to select blinking
30On10. When the parameter flashes, press key to confirm.
Select On to turn on the function, the unit is day. 2. After confirming the
parameter, press key to enter in P4.5 mode or
press key to return to the measurement mode. P4.5. Clear all the stored
value 1. Press key, “No” flashes, then press key “Yes” flashes. When the
parameter flashes, press key to confirm. No: not delete, Yes: delete. 2. After
confirming the parameter, press to enter in P4.6 mode or press key to return
to the measurement mode.
P4.6. Set automatic lock-up function 1. Press key, “Off” flashes, then press
key, “On” flashes. When the
parameter flashes, press key to confirm. Off: not set, On: set (the
reading is automatically locked when stabilizes10 seconds.)
2. After confirming the parameter, press key to enter in P4.7 mode or press
key to return to the measurement mode.
– 15 –
P4.7. Adjust date 1. Press key, “Month” flashes, then press key, “Date”
flashes, then
press key, “Year” flashes. When the number flashes, press key or key to adjust
date, then press key to confirm.
Date display: Month – Date 2. After confirming the parameter, press key to
enter in P4.8 mode or
press key to return to the measurement mode. P4.8. Adjust time 1. Press key,
“Hour” flashes, then press key, “Minute” flashes.
When the number flashes, press key and key to adjust time, then press to
confirm. 2. After confirming the parameter, press key to to return to the
measurement mode.
7 USB Communication 7.1 System Requirement
The meter uses “PC-Link” software with USB communication function. This
software requires the computer to meet such requirement: Personal computer
that operates in Windows system and a CDROM driver and a USB communication
port (with Microsoft Excel installed).
7.2 Software Interface
Software interface: refer to Diagram-21.
Diagram -21
– 16 –
1 — Meter serial number 2 — Stored value display area 3 — Keys
Clear — press this key to clear the data Download — press this key to download
the data from the meter to the computer, pH, mV, conductivity and dissolved
oxygen are classified in the file. Export — press this key to export the
stored value to Microsoft Excel file Exit — press this key, PC-Link program
exits from the computer interface
7.3 Load software
Please follow the following steps to load PC-Link to the computer: Open “PC-
Link” filedouble click “Setup” program click “OK” click icons (refer to
Diagram 22) click “Continue” click “Confirm”.
Diagram -22
7.4 Automatic connection port
Connect USB cable to the meter and the computer, open PC-Link program, program
interface shows, automatic connection is done after a few seconds. icon shows
at the left bottom of LCD. Note: for re-connection after turn-off, the
computer can not recognize the software automatically and please re-open the
software interface. Besides, this software only recognizes 1-16 port numbers.
For other port numbers, please set in “device manager” of the computer.
7.5 Run software
Upload the stored value Press “Download” key, all the data stored in the meter
is downloaded to the computer. pH and mV are sorted in the program.
7.6 Storage during operation
During operation, press key to store or set timing storage. The measuring
information is downloaded to the computer through USB and will not be stored
in the meter. The stored data during operation is the same as the data shown
on the meter.
– 17 –
7.7 Data processing
Press “Export ” key to export the stored value to Microsoft Excel file and
then analyze or print the stored data.
8 What’s in the box
Contents 1 SX811-SS Portable pH Meter 2 LabSen753 Spear pH/ATC Electrode, 3 pH
standard buffer (4.00pH/7.00pH/10.01pH /50mL each) 4 Polymer Electrode Storage
solution (50 ml) 5 PC-Link Software disk 6 USB Cable 7 Carrying Case 8 Manual
Quantity 1 1
One of each 1 1 1 1 1
9 Warranty
We warrant this instrument to be free from defects in material and workmanship
and agrees to repair or replace free of charge, at option of APERA INSTRUMENTS
(Europe) GmbH, any malfunctioned or damaged product attributable to
responsibility of APERA INSTRUMENTS (Europe) GmbH for a period of two years
from the delivery (a six-month limited warranty applies to probes). This
warranty does not apply to defects resulting from actions such as misuse
(violation of the instructions in this manual or operations in the manner not
specified in this manual), improper maintenance, or unauthorized repairs.
Warranty period is the time limit to provide free service for the products
purchased by customers, not the service life of the tester or probe.
– 18 –
10 Appendix
10.1 Appendix I: Parameter setup and factory default setup
Modes Prompts Parameter setting items P1.1 Select pH buffer solution
Abbreviation
Description
Restore to
factory default setup
USANISTCUSCH
P1.2 Set due calibration
P1.3
Check the date of the last calibration
/
P1.0 pH
P1.4
Set pH measurement mode of distilled water
Set pH measurement mode of
P1.5 distilled water mixed with
ammonia
P1.6 Restore factory default setting
NoH00D00
No
OffOn
Off
OffOn
Off
NoYes
No
P4.1 Adjust storage timing
/
0:00
P4.2 Select temperature unit
/
°C-°F
P4.3 Select backlight time
123On
1
P4.4 Select auto power-off time
P4.0 Basic parameters
P4.5 Clear stored value
P4.6
Set up automatic lock-up function
/
102030On
20
NoYes
No
Off–On
Off
P4.7 Adjust date
/
P4.8 Adjust time
/
– 19 –
10.2 Appendix II: Abbreviation glossary
Modes
Prompts P1.1
Code and abbreviation
P1.2
P1.0
P1.3
/
pH
P1.4
P1.5
P1.6
P4.1
/
P4.2
/
P4.0
Basic parameters
P4.3 P4.4 P4.5
P4.6
/
P4.7
/
P4.8
/
Others
Description Standard buffer solution
Due for calibration
Distilled water Distilled water mixed with
ammonia Factory default setting
Backlight Auto power-off Clear readings
China United States of America
Nist Off On No Yes
10.3 Appendix III: Self-diagnosis information
Icons
Self-diagnosis information
Wrong pH buffer solution or the buffer solution out of range
Press key when measuring value is not stable during calibration.
During calibration, the measuring value is not stable for 3min.
pH electrode zero electric potential out of range <-60mV or >60mV pH electrode
slope out of range <85% or >110%
Enter in pre-set calibration date to remind calibration
– 20 –
11 Recommended pH Electrodes for Specific Applications
Application
Regular water solutions Beverage, beer, or wine analysis Cosmetics
Dairy products (milk, cream, yogurt, mayo, etc.) High-Temperature liquid Low-
temperature liquid Meat Micro sample testing
Purified Water (Low ion-concentration samples) Soil Solid or semi-solid
samples (cheese, rice, fruit, etc.) Strong acid samples Strong alkalined
samples Surface test (skin, paper, carpet, etc.) Titration TRIS buffer
solutions Viscous liquid samples Wastewater or emulsion
Ideal Apera pH Electrodes to Use with SX811-SS Meter 201T-F, LabSen 213
LabSen 213 LabSen 851-1, (MP500 temp. probe required) LabSen 823 LabSen 213
LabSen881 (MP500 temp. probe required) LabSen 763 LabSen 241-6, LabSen 241-3
(MP500 temp. probe required) LabSen 803, LabSen 813 LabSen 553
LabSen 753 LabSen 831 (MP500 temp. probe required) LabSen 841 (MP500 temp.
probe required) LabSen 371 (MP500 temp. probe required) LabSen 223 LabSen 213,
LabSen 223 LabSen 223, LabSen851-1 LabSen 333
– 21 –
APERA INSTRUMENTS (Europe) GmbH Wilhelm-Muthmann-Straße 18 42329 Wuppertal
Germany Contact: [email protected] Website: www.aperainst.de Tel. +49 202
51988998
– 22 –