KROHNE IFC 090 Converter EN User Manual

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Part 2

Signal converter IFC 090 D (D = display version) and
Signal converter IFC 090 B (B = basic version), without display
but with HHT or CONFIG operator program (see Sect. 6.2)

Group I

Fault / Symptom

Cause

Remedial action

I 1

Receiver instrument

Incorrect connection/polarity

Connect properly

indicates “0”.

see Sect. 2.3 + 2.7.

Receiver instrument or current

Check output (see Sect. 7.2)

output defective.

with new milliammeter:
Test ok, check connection
cables and receiver instrument,
replace if necessary.
Test faulty, current output
defective. Replace signal
converter (see Sect. 8.7)
or contact Krohne Service

Current output disabled,

Activate under Fct. 1.05.

see Fct. 1.05

Short-circuit between current

Check connection and cables,

output and pulse output.

see Sect. 2.3 + 2.7.
Voltage between I+ and I

⊥

approx. 15 V. Switch off device,
eliminate short-circuit,
and switch device on again.

I 2

Unsteady display

Low electrical conductivity,

Increase time constant,

high solids content,

see Fct. 1.02, or contact

pulsating flow.

Krohne Service.