eutech-instruments chloride epoxy User Manual

Instruction Manual

Chloride Electrode

19

TROUBLESHOOTING HINTS

Symptom Possible Causes

Next Step

Out of Range defective meter

check meter with shorting

Reading

strap (see meter

instruction manual)

defective electrode

check electrode operation

electrodes not

plug electrode into position

plugged

in

properly

and

reset

meter

reference electrode

clean junction

junction clogged

static

electricity wipe

plastic

meter

face

with

detergent solution

meter

or

stirrer ground

meter

or

stirrer

not

grounded

Noisy or Unstable defective meter

check meter with

Readings (readings

shorting strap

continuously or
rapidly changing) air bubble on membrane

remove bubble by

re-dipping electrode

ISA not used

use recommended ISA

meter or stirrer

ground meter or

not grounded

stirrer

defective electrode

replace electrode

electrode exposed

soak electrode in

to interferences

chloride standard

Drift (reading

samples and standards

allow solutions to come to

slowly changing at different temperatures

room temperature before

in one direction)

measurement

incorrect reference

use recommended

filling solution

filling solution in outer

of reference electrode

membrane

dirty

or

etched

polish

membrane