Sper Scientific 860031 pH - mV Bench-Top Meter - Manual (Page 55)

55
TROUBLESHOOTING
Meter does not turn on:
1. Press POWER for more than 2 seconds.
2. Check the power adapter connection.
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 the probe is in
the container/solution.
2. Clean and re-calibrate or replace with the probe.
3. Move to a new location for measurement, RF emissions
from unknown sources may disrupt readings.
Readings not changing:
1. Check to see if the meter is in Hold Mode.
2. Release the “HOLD” function.
3. Check to see if the meter is in “MTC,” if so, input the
temperature value.
Slow response:
1. Clean and re-calibrate or replace the probe.
Wrong real time:
Incorrect real time display will not affect the measurements.
The internal battery needs replacing. Contact Sper
Scientific for battery replacement procedures.