EUTECH INSTRUMENTS ALPHA COND 560 Manual de Instruções descarregar pdf (Página 41)

8 TROUBLESHOOTING

Problem

Cause

Solution

Power on, but no

display

a) Loose connections

b) Incorrect output voltage

of the power adaptor

c) Cables not in correct

polarity (+ and – position)

a) Ensure cables make good

contact

b) Use an power adaptor with

specified output voltage

c) Re-wire loop cables with

correct polarity

Unstable conductivity

reading

a) Air bubbles in the probe

b) Dirty probe

c) Probe not deep enough

in sample

a) Tap probe to remove air

bubbles

b) Clean probe and

recalibrate

c) Ensure that the sample

entirely covers the sensor

of the probe

Oscillating

temperature readings

a) Electrical noise

interference

a) Ensure shield wire is

properly connected to pin 7

Slow response a) Dirty / Oily probe a) Clean probe

Blinking ATC a) No temperature probe

connection during ATC

mode

a) Ensure temperature

sensing cable makes good

contact

Blinking electrode

annunciator

a) Error in calibration

b) Conductivity value of the

calibration standard is not

within acceptable range

a) Ensure calibration

standard solution is not

contaminated. Ensure

electrode is clean

b) Ensure calibration

standard is within 10 to

100% of full-scale of the

selected measuring range

Or (Conductivity) a) Conductivity reading is

above the selected

measuring range

a) Ensure correct conductivity

measurement range is

selected

Or/Ur (Temperature) a) Temperature probe is not

connected when ATC

enabled

b) Temperature value

exceeds above/ below

the specified range

a) Ensure electrode makes

good contact with

controller

b) Ensure temperature

calibration is done

properly. Ensure process

temperature is within the

specified range

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