Справочник Пользователя для eutech-instruments fluoride epoxy
Instruction Manual
Fluoride Electrode
20
TROUBLESHOOTING HINTS
Symptom Possible Causes
Symptom Possible Causes
Next Step
Out of Range defective meter
check meter with shorting strap
Reading
(see meter instruction manual)
defective electrode
check electrode operation
electrodes not plugged
unplug electrodes and reset
in properly
reference electrode
be sure reference electrode is
not filled
filled
air bubble on membrane
remove bubble by re-dipping
electrode
Noisy or Unstable
defective meter
check meter with shorting strap
Readings (readings
continuously or
continuously or
air bubble on membrane
remove bubble by re-dipping
rapidly changing)
electrode
TISAB not used
use recommended TISAB
meter or stirrer
ground meter or stirrer
not grounded
defective electrode
replace electrode
electrode exposed
soak electrode in fluoride
to interference
standard with added TISAB
Drift (reading
samples and standards
allow solutions to come to room
slowly changing at different temperatures
temperature before measurement
in one direction)
electrode exposed to
check section entitled
complexing agents
Complexation
incorrect reference
use recommended
filling solution
filling solution
Low Slope or
standards contaminated
prepare fresh standards
No Slope
or incorrectly made
TISAB not used
use recommended TISAB
standard used as TISAB
use TISAB
electrode exposed
check section entitled