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exactph.com
TROUBLESHOOTING
Listed below are possible situations that may arise while testing.
Please contact one of our customer service representatives, or
watch our video online, if you require assistance
.
Subject Cause Solution
“ER1” on pH
+
LCD
(DISPLAY)
Wrong calibration
solution or the
range of calibration
solution exceeds
standards
Check if calibration
solution is correct
(1st pH calibration must
be pH 7.00)
1
Check if probe is
damaged
Check if there is any air
bubble in the pH glass
bulb
2
“ER2” on pH
+
LCD
(DISPLAY)
is pressed
before measurement
is stable ( comes
up and stays)
Wait for the smile icon to
come up and stay, then
press
1
The 1st point calibration must be in pH 7.00 buffer. Perform the
2nd point calibration (pH 4.00) immediately after the 1st point.
Do NOT turn off the meter before you conduct the 2nd point
calibration. If the meter is turned off after the 1st point calibration
the calibration process must be repeated. Calibrating directly in
pH 4.00 after turning the meter off and back on will cause Er1.
2
If you fi nd air bubbles in the pH glass bulb, shake the probe a few
times in an upward/downward motion to remove the bubbles. If
air bubbles are attached to the outside of the glass bulb, swirl the
probe in the solution to remove them. Air bubbles in the glass bulb
will cause unstable measurements.
ICONS AND SPECIAL FUNCTIONS
1. Calibration points indication:
(4.00pH)
(7.00pH)
(10.00pH)
2. Stable Measurement:
3. Reading value Auto Lock: HOLD
4. Self-Diagnostic Information: Er1, Er2
5. Low-Battery warning: fl ashes, replace battery
6. Two-Color backlight:
Blue—Measurement Mode;
Green—Calibration Mode;
7. Auto. Power off in 8 minutes if no operation.
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