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TROUBLESHOOTING
Meter does not turn on:
1. Press
POWER
for more than 2 seconds.
2. Check connections of the power adapter or batteries.
Unstable readings:
1. Stir the solution to make a uniform sample and make sure the
sensor is completely immersed in the solution. The measurement
must be done while probe is in the container/solution.
2. Move to new location for measurement, RF emissions from
unknown source may disrupt readings.
Readings not changing:
1. Check to see if meter is in
“HOLD” mode.
2. Release
“HOLD” function.
3. Check to see if meter is in
“MTC,” if so, input temperature value.
Slow response:
1. Clean and re-calibrate the probe. Replace with a new probe.
Wrong real time:
Incorrect real time display will not affect the measurements. Internal
batteries (separate from internal batteries that power the meter)
need replacing. Contact Sper Scientific for replacement
documentation.
ERROR CODES
E02
Reading is under the lower limit
E03
Reading is over the upper limit
E04
Temperature sensor fail, replace probe.
E12
Factory calibration data error; Reset meter
E13
Slope or Offset value of pH probe is out of range
E31
Measuring circuit failure; Restart meter
E32
Memory Integrated Circuit failure
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