REED 8689 User manual
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Model
Pantone 534 Blue
Pantone 123 Yellow
Pantone 485 Red
Pantone 123 Yellow
Pantone 534 Blue
Black Rich Black -
20/20/20/100
Blue - 100/80/30/5
Yellow - 0/27/100/0
Red - 10/100/100/5
Yellow - 0/27/100/0
Blue - 100/80/30/5
Only if you REALLY need them:
Pantone 534 Blue - 100/80/30/5
Pantone 485 Red - 10/100/100/5
Pantone 123 Yellow - 0/27/100/
Instruction
Manual
Digital pH Pen
8689
www. .com information@itm.com1.800.561.8187
reedinstruments
www com
2
Pantone 534 Blue
Pantone 123 Yellow
Pantone 485 Red
Pantone 123 Yellow
Pantone 534 Blue
Black Rich Black -
20/20/20/100
Blue - 100/80/30/5
Yellow - 0/27/100/0
Red - 10/100/100/5
Yellow - 0/27/100/0
Blue - 100/80/30/5
Only if you REALLY need them:
Pantone 534 Blue - 100/80/30/5
Pantone 485 Red - 10/100/100/5
Pantone 123 Yellow - 0/27/100/
Table of Contents
Data Hold ................................................................................... 5
Auto Power Off ........................................................................... 5
Parameter Setting ....................................................................... 6
Calibration ...............................................................................7-8
Changing the probe .................................................................... 8
Maintenance ............................................................................... 8
Troubleshooting .....................................................................8-10
www. .com information@itm.com1.800.561.8187
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3
Pantone 534 Blue
Pantone 123 Yellow
Pantone 485 Red
Pantone 123 Yellow
Pantone 534 Blue
Black Rich Black -
20/20/20/100
Blue - 100/80/30/5
Yellow - 0/27/100/0
Red - 10/100/100/5
Yellow - 0/27/100/0
Blue - 100/80/30/5
Only if you REALLY need them:
Pantone 534 Blue - 100/80/30/5
Pantone 485 Red - 10/100/100/5
Pantone 123 Yellow - 0/27/100/
Features
Specifications
www. .com information@itm.com1.800.561.8187
reedinstruments
www com
4
Pantone 534 Blue
Pantone 123 Yellow
Pantone 485 Red
Pantone 123 Yellow
Pantone 534 Blue
Black Rich Black -
20/20/20/100
Blue - 100/80/30/5
Yellow - 0/27/100/0
Red - 10/100/100/5
Yellow - 0/27/100/0
Blue - 100/80/30/5
Only if you REALLY need them:
Pantone 534 Blue - 100/80/30/5
Pantone 485 Red - 10/100/100/5
Pantone 123 Yellow - 0/27/100/
Instrument Description
Display Description
Keypad Description
Operating Instructions
LCD DISPLAY
-The 1st display shows the
measured pH reading.
-The 2nd display shows the
temperature reading (degreeC
or degree F)
-
HLD=Data hold
-Battery icon to indicate low
power
-uS/ppt/ppm/mS/mV are invalid
units in this pH pen
Cal=Calibration mode
-
KEYPAD
OPERATION
1. Remove the probe cover from meter.
See .Rotate the transparent cap to
expose the electrode out, see
3
2. Dip the electrode into the test solution.
Press " " to power on the meter
and tir it to get a stable reading.
-Press to freeze the current reading.
-Press again to release hold.
-Press to adjust while in setting or
calibration mode.
-Press to enter calibration mode.
-Press to save and enter next step
while in setting mode
-Press to adjust while in calibration
mode
-Press to power on/off the meter
-Press >2 second to enter setting
mode before power on.
-Press with “HOLD” key to disable
auto sleep function before power on.
1
2
LCD DISPLAY
-The 1st display shows the
measured pH reading.
-The 2nd display shows the
temperature reading (degreeC
or degree F)
-
HLD=Data hold
-Battery icon to indicate low
power
-uS/ppt/ppm/mS/mV are invalid
units in this pH pen
Cal=Calibration mode
-
KEYPAD
OPERATION
1. Remove the probe cover from meter.
See .Rotate the transparent cap to
expose the electrode out, see
3
2. Dip the electrode into the test solution.
Press " " to power on the meter
and tir it to get a stable reading.
-Press to freeze the current reading.
-Press again to release hold.
-Press to adjust while in setting or
calibration mode.
-Press to enter calibration mode.
-Press to save and enter next step
while in setting mode
-Press to adjust while in calibration
mode
-Press to power on/off the meter
-Press >2 second to enter setting
mode before power on.
-Press with “HOLD” key to disable
auto sleep function before power on.
1
2
LCD DISPLAY
-The 1st display shows the
measured pH reading.
-The 2nd display shows the
temperature reading (degreeC
or degree F)
-
HLD=Data hold
-Battery icon to indicate low
power
-uS/ppt/ppm/mS/mV are invalid
units in this pH pen
Cal=Calibration mode
-
KEYPAD
OPERATION
1. Remove the probe cover from meter.
See .Rotate the transparent cap to
expose the electrode out, see
3
2. Dip the electrode into the test solution.
Press " " to power on the meter
and tir it to get a stable reading.
-Press to freeze the current reading.
-Press again to release hold.
-Press to adjust while in setting or
calibration mode.
-Press to enter calibration mode.
-Press to save and enter next step
while in setting mode
-Press to adjust while in calibration
mode
-Press to power on/off the meter
-Press >2 second to enter setting
mode before power on.
-Press with “HOLD” key to disable
auto sleep function before power on.
1
2
LCD DISPLAY
-The 1st display shows the
measured pH reading.
-The 2nd display shows the
temperature reading (degreeC
or degree F)
-
HLD=Data hold
-Battery icon to indicate low
power
-uS/ppt/ppm/mS/mV are invalid
units in this pH pen
Cal=Calibration mode
-
KEYPAD
OPERATION
1. Remove the probe cover from meter.
See .Rotate the transparent cap to
expose the electrode out, see
3
2. Dip the electrode into the test solution.
Press " " to power on the meter
and tir it to get a stable reading.
-Press to freeze the current reading.
-Press again to release hold.
-Press to adjust while in setting or
calibration mode.
-Press to enter calibration mode.
-Press to save and enter next step
while in setting mode
-Press to adjust while in calibration
mode
-Press to power on/off the meter
-Press >2 second to enter setting
mode before power on.
-Press with “HOLD” key to disable
auto sleep function before power on.
1
2
www. .com information@itm.com1.800.561.8187
reedinstruments
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5
Pantone 534 Blue
Pantone 123 Yellow
Pantone 485 Red
Pantone 123 Yellow
Pantone 534 Blue
Black Rich Black -
20/20/20/100
Blue - 100/80/30/5
Yellow - 0/27/100/0
Red - 10/100/100/5
Yellow - 0/27/100/0
Blue - 100/80/30/5
Only if you REALLY need them:
Pantone 534 Blue - 100/80/30/5
Pantone 485 Red - 10/100/100/5
Pantone 123 Yellow - 0/27/100/
Data Hold
Auto Power Off
3. "pH " flashes while the meter is in
measurement mode. The LCD shows
the measured pH and temperature.
“pH” stop flash while the reading is
stable.
" "
4. Press key to freeze current
readings. "HLD" appears on the LCD.
Press " " key again to release.
Remove the cover
from the bottom
of meter to expose
the electrode.
1
Electrode cap
2
4
If the cap is too
tight, use pliers to
bracket the cap and
rotate to remove.
Don’t break the cap.
www. .com information@itm.com1.800.561.8187
reedinstruments
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6
Pantone 534 Blue
Pantone 123 Yellow
Pantone 485 Red
Pantone 123 Yellow
Pantone 534 Blue
Black Rich Black -
20/20/20/100
Blue - 100/80/30/5
Yellow - 0/27/100/0
Red - 10/100/100/5
Yellow - 0/27/100/0
Blue - 100/80/30/5
Only if you REALLY need them:
Pantone 534 Blue - 100/80/30/5
Pantone 485 Red - 10/100/100/5
Pantone 123 Yellow - 0/27/100/
Parameter Setting
Probe Slope and Offset Value
Temp. Unit Setting
Parameter Reset
www. .com information@itm.com1.800.561.8187
reedinstruments
www com
7
Pantone 534 Blue
Pantone 123 Yellow
Pantone 485 Red
Pantone 123 Yellow
Pantone 534 Blue
Black Rich Black -
20/20/20/100
Blue - 100/80/30/5
Yellow - 0/27/100/0
Red - 10/100/100/5
Yellow - 0/27/100/0
Blue - 100/80/30/5
Only if you REALLY need them:
Pantone 534 Blue - 100/80/30/5
Pantone 485 Red - 10/100/100/5
Pantone 123 Yellow - 0/27/100/
Calibration
Calibration is necessary and should be
done regularly, recommended everyday
if the meter is used often. The unique
calibration design of the meter features
automatic buffer recognition to avoid errors.
CALIBRATION MODE (CAL)
2. Power on the meter.
1. Rinse the probe thoroughly with
de-ionised water or rinse solution. Do
not wipe the probe as this will cause a
build-up of electrostatic charge on the
glass surface.
3.
pH7 first and then 4 or 10 pH for better
accuracy result.
Dip the probe into the standard calibration
buffer. The end of the probe must be
completely immersed into the sample.
Stir the probe gently to create a homo-
geneous sample. Suggest to calibrate
4. Press " " key > 1 second to
enter calibration mode. The "CAL"
icon, auto recognized buffer value (see
below table) and “pH” will all flash
on primary LCD.
8
o
Temp.( C) pH4.01 PH9.18PH6.86
0
5
10
15
20
25
30
35
40
45
50
4.01
4.01
4.00
4.00
4.00
4.01
4.01
4.02
4.03
4.04
4.06
9.47
9.38
9.32
9.27
9.22
9.18
9.14
9.10
9.07
9.04
9.01
6.98
6.95
6.92
6.90
6.88
6.86
6.85
6.84
6.84
6.83
6.83
NIST
www. .com information@itm.com1.800.561.8187
reedinstruments
www com
8
Pantone 534 Blue
Pantone 123 Yellow
Pantone 485 Red
Pantone 123 Yellow
Pantone 534 Blue
Black Rich Black -
20/20/20/100
Blue - 100/80/30/5
Yellow - 0/27/100/0
Red - 10/100/100/5
Yellow - 0/27/100/0
Blue - 100/80/30/5
Only if you REALLY need them:
Pantone 534 Blue - 100/80/30/5
Pantone 485 Red - 10/100/100/5
Pantone 123 Yellow - 0/27/100/
Changing the Probe
Maintenance
www. .com information@itm.com1.800.561.8187
reedinstruments
www com
9
Pantone 534 Blue
Pantone 123 Yellow
Pantone 485 Red
Pantone 123 Yellow
Pantone 534 Blue
Black Rich Black -
20/20/20/100
Blue - 100/80/30/5
Yellow - 0/27/100/0
Red - 10/100/100/5
Yellow - 0/27/100/0
Blue - 100/80/30/5
Only if you REALLY need them:
Pantone 534 Blue - 100/80/30/5
Pantone 485 Red - 10/100/100/5
Pantone 123 Yellow - 0/27/100/
Troubleshooting
Power on but no display
Slow response
Unstable reading
The reading does not change
Error Codes
www. .com information@itm.com1.800.561.8187
reedinstruments
www com
10
Pantone 534 Blue
Pantone 123 Yellow
Pantone 485 Red
Pantone 123 Yellow
Pantone 534 Blue
Black Rich Black -
20/20/20/100
Blue - 100/80/30/5
Yellow - 0/27/100/0
Red - 10/100/100/5
Yellow - 0/27/100/0
Blue - 100/80/30/5
Only if you REALLY need them:
Pantone 534 Blue - 100/80/30/5
Pantone 485 Red - 10/100/100/5
Pantone 123 Yellow - 0/27/100/
Battery Replacement
www. .com information@itm.com1.800.561.8187
reedinstruments
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11
Pantone 534 Blue
Pantone 123 Yellow
Pantone 485 Red
Pantone 123 Yellow
Pantone 534 Blue
Black Rich Black -
20/20/20/100
Blue - 100/80/30/5
Yellow - 0/27/100/0
Red - 10/100/100/5
Yellow - 0/27/100/0
Blue - 100/80/30/5
Only if you REALLY need them:
Pantone 534 Blue - 100/80/30/5
Pantone 485 Red - 10/100/100/5
Pantone 123 Yellow - 0/27/100/
Notes _________________________________________
________________________________________________
________________________________________________
________________________________________________
________________________________________________
________________________________________________
________________________________________________
________________________________________________
________________________________________________
________________________________________________
________________________________________________
________________________________________________
________________________________________________
________________________________________________
________________________________________________
________________________________________________
________________________________________________
________________________________________________
www. .com information@itm.com1.800.561.8187
reedinstruments
www com
12
Pantone 534 Blue
Pantone 123 Yellow
Pantone 485 Red
Pantone 123 Yellow
Pantone 534 Blue
Black Rich Black -
20/20/20/100
Blue - 100/80/30/5
Yellow - 0/27/100/0
Red - 10/100/100/5
Yellow - 0/27/100/0
Blue - 100/80/30/5
Only if you REALLY need them:
Pantone 534 Blue - 100/80/30/5
Pantone 485 Red - 10/100/100/5
Pantone 123 Yellow - 0/27/100/
Notes _________________________________________
________________________________________________
________________________________________________
________________________________________________
________________________________________________
________________________________________________
________________________________________________
________________________________________________
________________________________________________
________________________________________________
________________________________________________
________________________________________________
________________________________________________
________________________________________________
________________________________________________
________________________________________________
________________________________________________
________________________________________________
www. .com information@itm.com1.800.561.8187
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