Owner's manual

What to do if... pH/ 3400i

TP and Temp Error flash

Calibration Std 2 flashes

Calibration Std 3 flashes

6.3 General errors

Display LoBat

Instrument does not

react

to keystroke

Cause Remedy

In calibration:

– Calibration standards do not

have the correct temperature

(max. temperature difference

2 °C)

– Temper the calibration

standards

In measurement:

– Test sample does not have the

correct temperature (max.

temperature difference

± 2 °C)

– Temper the test sample

Cause Remedy

– Standard 2 = Standard 1 – Use different calibration

standards

Cause Remedy

Requirement not met:

– Standard 3 > Standard 2, if Std

2 > Std 1 or

– Standard 3 < Standard 2, if Std

2 < Std 1

– Use different standard 3

Cause Remedy

– Batteries almost empty – Exchange the batteries (see

section 5.1 M

AINTENANCE)

Cause Remedy

– Operating condition undefined

or EMC load unallowed

– Processor reset:

Switch the instrument on

while pressing the <CAL> key