JENCO 6011B User manual

Operation Manual
MODEL 6011B/6011BEU
pH/ORP/Temperature
Basis Bluetooth Portable Meter
6011B/6011BEU

1
CONTENTS
GENERAL INTRODUCTION………………....................2
INITIAL INSPECTION……...………………....................3
CHARGING THE BATTERY PACK..……....................3
BATTERY PACK REPLACEMENT...............................4
CONNECTORS..............................................................5
DISPLAY & KEY FUNCTIONS….....……………...…………6
A. Display ................................................................6
B. Operational Keys Description.................................8
OPERATIONAL PROCEDURES..……........................10
A. System setup.......................................................10
B. pH Calibration......................................................13
C. pH Measurements................................................17
D. Temperature Measurements..................................18
E. mV Offset............................................................18
F. mV (REL mV)Measurements..................................19
G. Save, Recall and Delete Data.................................20
H. Viewing Data and Calibration Records on PC...........21
I. pH Buffers…............……………………..............22
APP NAVIGATION.......................................................22
FCC WARNING STATEMENT......................................26
ERROR DISPLAYS AND TROUBLESHOOTING.......27
SPECIFICATIONS………………..……........................28
WARRANTY…………………...……….........................29

2
GENERAL INTRODUCTION
Thank you for selecting the 6011B/6011BEU meter. The
6011B/6011BEU is a precision tool that measures pH, mV (REL mV)
and temperature. A built-in microprocessor stores, calculates and
compensates for all parameters related to pH determinations
including pH electrode temperature characteristics, electrode slope
deviations, offset and buffer solutions. The 6011B/6011BEU is a new
generation pH/ORP/temperature Bluetooth portable meter with iOS
and Android mobile phone apps. The 6011B/6011BEU has a micro
USB port for easy data transfer to PC and charging the battery pack.
This unit has a waterproof IP67 case. The touch mode keys are
highly reliable with tactile and audio feedback. This meter uses a
recharagable battery pack, typical battery life is over 100 hours (turn
off Bluetooth). Re-calibration is not required when power is turned
on again.
The front of the meter has a large LCD that displays pH, mV (REL
mV) and temperature simultaneously along with user prompts and
mode indicators. The unit prompts the user through calibration and
measurement procedures.
An AUTOLOCK feature for both pH and mV (REL mV)
measurements enables the unit to automatically sense the end point
and the “ √ ” display indicates the end point value of a measurement.
AUTOLOCK and user prompts help to eliminate most errors in
determining pH and mV values, resulting in precise, repeatable and
error-free measurements. The 6011B/6011BEU can also be used in
non-AUTOLOCK mode.
The unit is also equipped with a non-volatile memory allowing the
user to store 750 point memory with date/time stamp for GLP. This
unit will assign a site number for each set of reading so the user can
review the data easily. And the stored data can be transferred to PC
through the micro USB port.
The model 6011B/6011BEU is available with pH, ORP and ATC
(Automatic Temperature Compensation) probes. Other features
include electrode offset recognition, electrode slope recognition,
electrode efficiency display, built-in buffer coefficients, automatic or
manual temperature compensation. This meter is user-friendly for
field, industrial and laboratory applications.
[IMPORTANT NOTE: The 6011B has a 10 KΩ thermistor and the
6011BEU has a 30 KΩ thermistor. Their temperature sensor is not
interchangeable.]

3
INITIAL INSPECTION
Carefully unpack the unit and accessories. Inspect for damages
made in shipment. If any damage is found, notify your JENCO
representative immediately. All packing materials should be saved
until satisfactory operation is confirmed.
CHARGING THE BATTERY PACK
This meter uses a recharagable battery pack. It is recommended to
charge the battery when the "Battery" icon flashes. The "Battery"
icon stops flashing after the charging is full. The battery pack can be
charged from the AC power adapter of the cellphone/tablet, directly
from a computer USB connection or from an external, portable USB
battery pack.
A USB cable is included with the meter to charge the meter battery
pack and connect the meter to a PC.
To charge the battery pack, connect the USB cable between the AC
adapter the PC USB port or the external USB battery pack and the
micro USB part of the meter. (Fig.1).
Fig.1: Connecting the meter to AC power supply
WARNING: Charge the battery pack in an open area away from
flammable materials, liquids, and surfaces. Do not
charge or handle a battery pack that is hot to the touch.
Failure to follow the safety warnings and precautions
can result in personal injury and/or meter damage not
covered under warranty.

4
BATTERY PACK REPLACEMENT
The life expectancy for 6011B/6011BEU rechargable battery is ≥
300 charge cycle @ 25 °C.
1. Use a screw driver to remove the four screws and battery
compartment cover to expose the battery compartment. (Fig.2)
2. With two fingers, grasp the battery pack connector and pull the
connector straight up to disconnect and remove the battery pack.
Properly dispose of the old battery pack.
3. Correctly align and seat the new battery pack into the meter.
4. Properly align the battery pack connector wire terminals with the
meter pin connector, then connect the battery pack to the meter.
Incorrect installation can damage the battery pack connectors or
meter pins.
5. Replace the battery cover and make sure to secure the four
screws for the water-tight feature.
Figure 2 Battery replacement
1. Battery compartment cover
2. Battery pack
3. Battery pack connector
4. Meter pin connectors

5
CONNECTORS
Figure 3: 6011B Connectors
1. pH/ORP connector (BNC connector)
2. Micro USB connector
3. ATC connector (6 PIN waterproof connector)
Figure 4: 6011BEU Connectors
1. pH/ORP connector (BNC connector)
2. Micro USB connector
3. ATC connector (3.5 mm waterproof phone jack)

6
DISPLAY & KEY FUNCTIONS
A. Display
Figure 5: Active LCD screen
1. Battery charge.
2. CAL-
In the calibration mode.
3. AUTO-
AUTOLOCK mode indicator.
4. RECAL-
Recalibrate meter.
5. WAIT-
This will be displayed when
the unit is still waiting for a
stable reading or end point
sensing.
6. √-
This will indicate that the
reading is frozen during
AUTOLOCK mode.

7
7. %-
Efficiency of the electrode
unit.
8. DAY-
Represents the time unit
"days" required for
recalibration.
9. Data storage site number.
10. MAN-
Manual temperature
compensation.
11.
ATC-
Auto temperature
compensation.
12. Buffer sets.
13.Delete-
In the delete mode.
14. TIME-
In the time setting mode.
15.EACH-
To delete a single set of data
from the data storage.
16. DATE-
In the date setting mode.
17.Main display for pH, mV
and probe efficiency values.
18. REL/mV/pH-
Unit and mode indicators.
19.Temperature value or
offset value of electrode.
20. Temperature unit.
21. Offset & mV-
Electrode offset.
22. SET-
In the setting mode.
23. In the charging mode. 24. In the Bluetooth mode.
25. USB/PC connection
indicator.
26. Save-
To save a reading into
the data storage.
27.EFF-
This will be displayed if the
user is viewing the
efficiency of the electrode.
28. Recall-
To recall data from the
data storage.
29.Date/Time

8
B. Operational Keys Description
Figure 6
NO.
Key
Description
1
Power/BLE(Bluetooth)-
Press and hold this key for 3 seconds to power
on and shut off the meter.
In the measure mode, press this key to turn
Bluetooth on or off.
2
Mea./Eff.-
This key is used to bring the unit out of the
AUTO condition when operating in the
pH-AUTOLOCK or mV (REL mV) -
AUTOLOCK mode.
In the pH measure mode, press and hold this
key for 5 seconds, the LCD will display the
efficiency of the electrode and the offset value.
In the ORP measure mode, press and hold this
key for 5 seconds, the LCD will display the
offset value of the electrode.
3
Enter-
This key is used to confirm the setting data or
parameter.
At the Recall mode, press “Enter” key to
display the last set of saved data.
In the “Delete All” mode, press “Enter” and
enters the selection screen.
In the “Delete EACH” mode, press “Enter” key
to delete a single set of data.
Mea.
Eff.

9
4
Mode-
This key is used to selects display mode.
Pressing this key changes the display
sequentially to display pH-AUTOLOCK, mV
(REL mV)-AUTOLOCK, pH, mV (REL mV).
In the “Recall” and “Delete” modes, press this
key to exit “Recall” and “Delete” modes
respectively.
In the calibration mode, press “Mode” key to
exit calibration mode.
In the SET mode, press “Mode” key to exit
SET mode.
5
Save-
In the measure mode, press “Save” key for 3
seconds, to save reading into the data storage
site.
Press this key to select “Recall”, “Delete Each”
and “Delete All” Mode, sequentially.
6
Clear-
This key is used to clear the unit when error
signal appears. It clears all calibration values
stored in the internal memory.
In the pH mode or mV (REL mV) mode, when
the “Clear” key is pressed for 5 seconds, the
meter clears all calibration values stored in
internal memory.
7
CAL-
This key is used for pH and ORP calibration.
For its specific functions, please see the
"calibration" section in each parameter.
8
Mea.
Eff.
Stand
Slope
Mode
Clear
Mea.
Eff.
Stand
Slope
Mode
Clear
Up & Down-
In the pH/ORP measure mode, these two keys
are used to manually enter the temperature
values. They have no effect on the unit when
operating in ATC mode.
In the ORP calibration mode, these two keys
are used to adjust the REL mV display value.
In the “Recall” mode, view saved data and data
storage site number by pressing these keys.
In the “Delete ALL” mode, select between the
“Yes” and “No” for data all delete.
In the “Delete One” mode, view to be deleted
data and data site numbers by pressing these
keys.

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9SET-
Press this key to enter system setup mode.
10
Date/Time-
In the measure mode and recall mode, press
this key to switch date or time display.
OPERATIONAL PROCEDURES
A. System Setup
Use the System Setup to customize operation of the
6011B/6011BEU meter.
Press the "SET" key to enter system setup mode and enter
first setup, RECAL.
1. RECAL setup
a. This function is to prompt end user to recalibrate the meter.
b. “SET” and “RECAL” icons will lit up. Main LCD will show 00
day, 00 will flash.
c. Press “Up” or “Down” key to set desire recalibration
period, between 0 to 60 days. Then press “Enter” key to
save and enter next setting, DATE setup.
d. "RECAL" icon will flash when pre-set recalibration time is
due.
2. DATE setup
a. This function is for setting the correct date.
b. “SET”, “DATE” icons will lit up. Main LCD will show flashing
“tYP 1” and upper LCD will show yyyy-mm-ddxx.
tYP 1 date format : yyyy-mm-ddxx, x: no display
tYP 2 date format: xxmm-dd-yyyy
tYP 3 date format: xxdd-mm-yyyy
Upper LCD display will follow the type number to be
selected.
c. Press "Up" or "Down" key to select desired date format.
Press "Enter" key to save date format setting and enter
calendar setup. The upper LCD will show the date format

11
selected by user.
d. “Year” will flash first. Press "Up" or "Down" key to set the
correct year. Then press "Enter" key to save.
e. “Month” will flash. Press "Up" or "Down” key to set the
correct month. Then press “Enter” to save.
f. “DAY” will flash. Press "Up" or "Down" key to set the
correct day. Then press "Enter" to save.
3. TIME setup
a. This function is for setting the correct time.
b. “SET”, “TIME” icons will lit up. Main LCD will show flashing
“12H” or “24H”.
c. Press "Up" or "Down" key to select desired time format.
Press "Enter" key to save time format setting and enter real
time setup.
d. “Hour” will flash first. Press "Up" or "Down" key to set the
correct hour and press "Eentr" key to save hour setting and
enter minute setup.
[Note: 24H format: Hour will cycle from 0 to 24
12H format: Hour will cycle from 0 am, …12 am,
1 pm,….12 pm, 0 am. Last digit will show A for
a.m., P for p.m.]
e. “Minute” will flash. Press "Up" or "Down" key to set the
correct minute and press "Enter" key to save minute
setting and enter second setup.
f. “Second” will flash. Press "Up" or "Down" key to set the
correct second and press "Enter" key to save minute
setting and enter buffer set setup.
4. Buffer set setup
a. This function allows end user to select between "USA" or
"NIST" buffer sets.
b. “SET” icon will lit up. Main LCD will show “buFF” and the
lower LCD will show flashing “niSt” or “USA”. Lower left
corner will show the buffer set (5 buffer tubes drawing).
c. Press "Up" or "Down" key to select. Press “Enter” key to
save buffer set and enter temperature unit setup. Lower left

12
corner will show the 5 selected buffer set.
[Note: 5 buffer tubes display is depended on selected
buffer set.]
5. Temperature unit setup
a. This function allows end user to select the between "°C" or
"°F" temperature unit.
b. “SET” icon will lit up. Main LCD will show “Atc”. Lower LCD
will show “unit” and “C” or “F” unit will flash.
c. Press "Up" or "Down" key to select the desired
temperature unit. Press "Enter" key to save temperature
unit and enter shut down time setup.
6. Shut down time setup
a. This function allows end user to set the auto shut down
time.
b. “SET” icon will lit up. Main LCD will show “Shut”. Lower
LCD will show flashing “OFF” or last time set parameter.
c. Press "Up" or "Down" key to select desire shut down time,
“OFF”, “10 “, “20” or “30” minutes. Press "Enter" key to
save shut down time and enter reset setup.
7. Reset setup
a. This function allows end user to revert the meter back to
manufacture default settings.
b. “SET” annunciator will show. Main LCD will show “rSt”.
Lower LCD will show flashing “no”.
c. Press "Up" or "Down" key to select “YES” or “no”.
d. If select “no”, press “Enter” key to exit setup mode (return
to pH-AUTOLOCK measure mode).
e. If select “YES”, press "Enter" to reset all parameters to
factory default and exit setup mode.
[Note: Day and time data will not change. User can press
"Mode" key to exit setting anytime.]

13
Factory default: RECAL : 0 day
Time format : 12 Hour format
Day format : type 1/yyyy-mm-dd
Buffer set : USA
Temperature unit : °C
Clear all CAL and user records
B. pH Calibration
The 6011B/6011BEU uses up to 5 point calibration.
[Note: If the device is required to perform more than one
calibration points, the first calibration point must be 6.86/7.00
pH.]
1. Calibration with an ATC/Temp probe in the
pH-AUTOLOCK mode.
a. Turn the unit on. In the pH mode, press “Clear” key for 5
seconds, all LCD elements will lit up. The meter clears all
calibration values stored in the internal memory.
b. Connect the pH electrode to the BNC connector and the
ATC/Temp probe to the ATC/Temp connector of the unit.
c. Press “Mode” key to go to pH-AUTOLOCK mode. “ATC”
icon, “pH” icon and “AUTO” icon will lit up. The “CAL” icon
will begin to flash.
d. Rinse the pH and ATC/Temp probes in distilled water and
immerse them in the first buffer solution. Allow temperature
reading to stabilize. Then press and hold “CAL” key for 3
seconds to calibrate. The “WAIT” icon will flash until the
unit detects a stable reading. Once the unit calibrates the
first point. The selected buffer will lit up while two other
selectable buffers start to flash. The unit is ready to be
sloped at the second buffer. The unit is ready to be sloped
at the second buffer if the first buffer solution is 6.86 or 7.00
pH.
[Note: At this moment, press the “Mode” key, the unit will
exit the calibration mode. Single point calibration is
complete.
To continue with two or more point calibration, the first
buffer solution has to be either 7.00 or 6.86 pH.]
e. Rinse the pH and ATC/Temp probe in distilled water and
immerse them in the second buffer solution (either
4.00/4.01 pH or 9.18/10.01 pH corresponding to the

14
flashing number on display). Allow temperature reading to
stabilize. Then press “Enter” key to calibrate. The “WAIT”
icon will flash until the unit detects a stable reading. Once
the unit calibrates the second point. The selected two
buffers lit up and the remaining buffer starts to flash. The
unit is ready to be sloped at the third buffer.
[Note: At this moment, press the “Mode” key, the unit will
exit the calibration mode. Dual point calibration is
complete.]
f. The third point, the fourth point and the fifth point are the
same as the second point calibration point. When the unit
completed the fifth point calibration, press the “Mode” key
and exit the calibration mode.
g. The unit calculates and compensates for the pH electrode
slope deviation corresponding to the values of the
calibrated buffers. After calibration, press and hold
“Mea./Eff.” key for about 5 seconds to display the new
electrode efficiency and offset value.
2. Calibration with manual temperature compensation in the
pH-AUTOLOCK mode.
a. Turn the unit on. In the pH mode, press “Clear” key for 5
seconds, all LCD elements will lit up. The meter clears all
calibration values stored in internal memory.
b. Connect the pH electrode to the BNC connector of the unit.
c. Press “Mode” key to go to pH-AUTOLOCK mode. “MAN”
icon, “pH” icon and “AUTO” icon will lit up. The “CAL” icon
will flash.
d. Rinse the pH electrode in distilled water and immerse it in
the first buffer solution. Adjust the temperature reading to
that of the first buffer using the “Up” or “Down” keys (0.0
to 60.0 ℃). Then press and hold “CAL” key for 3 seconds
to calibrate. The “WAIT” icon will flash until the unit detects
a stable reading. Once the unit calibrates the first point.
The selected buffer remains lit up while two other
selectable buffers start to flash. The unit is ready to be
sloped at the second buffer if the first buffer solution is 6.86
or 7.00 pH.
[Note: At this moment, press the “Mode” key, the unit will
exit the calibration mode. Single point calibration is
complete.

15
To continue with two or more point calibration, the first
buffer solution has to be either 7.00 or 6.86 pH.]
e. Repeat steps “e” of “Calibration with an ATC/Temp probe
in the pH-AUTOLOCK mode” for 2 to 5 point calibration.
f. The unit calculates and compensates for the pH electrode
slope deviation corresponding to the values of the
calibrated buffers. After calibration, press and hold
“Mea./Eff.” key for about 5 seconds to display the new
electrode efficiency and offset value.
3. Calibration with an ATC/Temp probe in the pH
NON-AUTOLOCK mode.
a. Turn the unit on. In the pH mode, press “Clear” key for 5
seconds, all LCD elements will lit up. The meter clears all
calibration values stored in internal memory.
b. Connect the pH electrode to the BNC connector and the
ATC/Temp probe to the ATC/Temp connector of the unit.
c. Press “Mode” key for the LCD to display pH and the
AUTOLOCK annunciator is off. “ATC” icon will lit up. “pH”
icon is on. The “CAL” icon will begin to flash.
d. Rinse the pH and ATC/Temp probes in distilled water and
immerse them in the first buffer solution. Allow temperature
and pH reading to stabilize. Then press and hold “CAL”
key for 3 seconds to calibrate. The unit immediately
calibrates the first point. The selected buffer remains lit up
while two other selectable buffers start to flash. The unit is
ready to be sloped at the second buffer if the first buffer
solution is 6.86 or 7.00 pH.
[Note: At this moment, press the “Mode” key, the unit will
exit the calibration mode. Single point calibration is
complete.
To continue with two or more point calibration, the first
buffer solution has to be either 7.00 or 6.86 pH.]
e. Rinse the pH and ATC/Temp probe in distilled water and
immerse them in the second buffer solution (either
4.00/4.01 pH or 9.18/10.01 pH corresponding to the
flashing number on display). Allow temperature reading to
stabilize. Then press “Enter” key to calibrate. The unit
immediately calibrates the second point. The selected two
buffers lit up and the remaining buffer starts to flash. The
unit is ready to be sloped at the third buffer.

16
[Note: At this moment, press the “Mode” key, the unit will
exit the calibration mode. Dual point calibration is
complete.]
f. The third point, the fourth point and the fifth point are the
same as the second point calibration. When the unit
completed the fifth point calibration, press the “Mode” key
and exit the calibration mode.
g. The unit calculates and compensates for the pH electrode
slope deviation corresponding to the values of the
calibrated buffers. After calibration, press and hold
“Mea./Eff.” key for about 5 seconds to display the new
electrode efficiency and offset value.
4. Calibration with manual temperature compensation in the
pH NON-AUTOLOCK mode.
a. Turn the unit on. In the pH mode, press “Clear” key for 5
seconds, all LCD elements will lit up. The meter clears all
calibration values stored in internal memory.
b. Connect the pH electrode to the BNC connector of the unit.
c. Press “Mode” key for the LCD to display pH and the
AUTOLOCK annunciator is off. “MAN” icon will lit up. “pH”
icon is on. The “CAL” icon will begin to flash.
d. Rinse the pH electrode in distilled water and immerse it in
the first buffer solution. Adjust the temperature reading to
that of the first buffer using the “Up” or “Down” keys (0.0
to 60.0 ℃) before pressing “CAL” key. Then press and
hold “CAL” key for 3 seconds to calibrate. The unit
immediately calibrates the first point. The selected buffer
remains lit up while the remaining buffers start to flash. The
unit is ready to be sloped at the second buffer if the first
buffer solution is 6.86 or 7.00 pH.
[Note: At this moment, press the “Mode” key, the unit will
exit the calibration mode. Single point calibration is
complete.
To continue with two or more point calibration, the first
buffer solution has to be either 7.00 or 6.86 pH.]
e. Repeat steps 5 of “Calibration with an ATC/Temp probe
in the pH NON- AUTOLOCK mode” for 2 to 5 point
calibration.
f. The unit calculates and compensates for the pH electrode

17
slope deviation corresponding to the values of the
calibrated buffers. After calibration, press and hold
“Mea./Eff.” key for about 5 seconds to display the new
electrode efficiency and offset value.
C. pH Measurements
To take pH measurements, 6011B/6011BEU must be
calibrated before first use.
1. Measurement with an ATC/Temp probe in the pH
AUTOLOCK mode.
a. Connect the pH electrode to the BNC connector and the
ATC/Temp probe to the ATC/Temp connector of the unit.
The “ATC” icon will lit up.
b. Press “Mode” key until “pH”, “AUTO”, “ATC”, “buffer”,
“WAIT” icons lit up.
c. Rinse the pH electrode and ATC/Temp probe with distilled
water and immerse them in the sample to be measured.
Remove any air bubbles trapped around the probe by
shaking or stirring the probe.
d. Press the “Mea./Eff.” key. The “WAIT” icon will start
flashing. The unit is waiting for a stable reading. The
display will track the pH value as sensed by the pH
electrode and the ATC/Temp probe.
e. When the “WAIT” icon disappears and the “√” icon appears,
the meter will not respond to further changes from the
sample. The pH value shown is the pH value of the sample
at the displayed sample temperature.
[Note: For samples that are inherently unstable, the unit
will not AUTOLOCK. In this case, use the pH NON-
AUTOLOCK mode for measurements.]
2. Measurement with manual temperature compensation in
the pH-AUTOLOCK mode.
a. Connect the pH electrode to the BNC connector of the unit.
The “MAN” icon will lit up. Set unit to display the sample
temperature by pressing the “Up” or “Down” keys (-10.0
to 120.0 ℃).
b. Press “Mode” key until “pH”, “AUTO”, “MAN”, “buffer”,
“WAIT” icons lit up.

18
c. Repeat steps “c” to “e” of “Measurement with an
ATC/Temp probe in the pH- AUTOLOCK mode”.
3. Measurement with an ATC/Temp probe in the pH
NON-AUTOLOCK mode.
a. Connect the pH electrode to the BNC connector and the
ATC/Temp probe to the ATC/Temp connector of the unit.
The “ATC” icon will lit up.
b. Press “Mode” key until the “pH”, “ATC”, “buffer” icons lit up.
c. Rinse the pH electrode and ATC/Temp probe with distilled
water and immerse them in the sample to be measured.
Remove any air bubbles trapped around the probe by
shaking or stirring the probe.
d. Allow sufficient time for the display to stabilize. The meter
will display the pH value of the sample at the displayed
sample temperature.
4. Measurement with manual temperature compensation in
the pH NON-AUTOLOCK mode.
a. Connect the pH electrode to the BNC connector of the unit.
The “MAN” icon will lit up. Set unit to display the sample
temperature by pressing the “Up” or “Down” keys (-10.0
to 120.0 ℃).
b. Press “Mode” key until the “pH”, “MAN”, “buffer” icons lit
up.
c. Repeat steps “c” to “d” of “Measurement with an
ATC/Temp probe in the pH NON- AUTOLOCK mode”.
D. Temperature Measurements
The 6011B/6011BEU can measure temperature independently
with the ATC/Temp probe without using the pH electrode.
Place the ATC/Temp probe in the sample. The unit will display
the measured temperature.
E. mV Offset
1. Turn the unit on. In the mV mode, press “Clear” key for 5
seconds. All LCD elements will lit up. The meter clears all
calibration values stored in internal memory.

19
2. Connect the ORP electrode to the BNC connector of the unit.
3. Press “Mode” key for the LCD to display “MAN” and “mV”
icons will lit up. The "WAIT" icon begins to flash.
4. Rinse the ORP probe in distilled water and immerse it in the
standard solution. Then press and hold “CAL” key for 3
seconds to calibrate. The “CAL”, “mV” and “Offset” icons will
lit up. According to the mV (REL mV) value displayed, press
the “Up” or “Down” keys to adjust the display value to the
same value as the standard solution. Press the “Enter” key
to save and complete the calibration.
5. Press and hold “Mea./Eff.” key for about 5 seconds to
display the new electrode offset value.
F. mV (REL mV) Measurements
1. Measurement in the mV (REL mV)-AUTOLOCK mode.
a. Connect the combination ORP electrode to the BNC
connector of the unit.
b. Press “Mode” key until the “mV” (REL mV), “AUTO”,
“MAN” and “WAIT” icons lit up.
c. Rinse the ORP electrode with distilled water and immerse it
in sample to be measured.Remove any air bubbles trapped
around the electrode by shaking or stirring the electrode.
d. Press the “Mea./Eff.” key. The “WAIT” icon will start
flashing. The unit is waiting for a stable reading. The meter
will track the mV (REL mV) value as sensed by the ORP
electrode.
e. When the “WAIT” icon disappears and the “√” icon appears,
the meter will not respond to further changes from the
sample. The mV (REL mV) value is the sample reading.
[Note: For samples that are inherently unstable, the unit
will not AUTOLOCK. In this case, use the mV (REL mV)
NON- AUTOLOCK mode for measurements.]
2. Measurement in the mV (REL mV) NON-AUTOLOCK
mode.
a. Connect the combination ORP electrode to the BNC
connector of the unit.