Sper Scientific 850055 pH Meter - Advanced - Manual (Page 31)

31
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 pow-
er the meter) need replacing. Contact distributor for
replacement documentation.