YSI IQ SensorNet MIQ/IC2 Module - Manual (Page 19)

MIQ/IC2 What to do if ...
5 - 1 ba76034e01 01/2012
5 What to do if ...
No measured value
Measurement provides
implausible measured
values
Display of OFL
Cause Remedy
– MIQ/IC2 not connected – Connect the MIQ/IC2
– Unknown – Look in the log book
Cause Remedy
– Unsuitable settings of:
– Measuring range,
– Display value (0/4 mA),
– Display value (20 mA)
– Adjust the settings in the setting
menu of the MIQ/IC2
– Current value at the current
input or output of an instru-
ment (e.g. measuring trans-
mitter, power supply/isolator,
MIQ/IC2 etc.) does not agree
with the nominal value
– Change the settings of the
external meters as necessary
– Adjust the settings in the setting
menu of the MIQ/IC2
– Calibration is not up-to-date – Calibrate the external meter
Cause Remedy
– Allowed signal range excee-
ded or undercut
– Operate the 0/4 ... 20 mA cur-
rent inputs of the MIQ/IC2 in the
allowed current range only (see
chapter 7 T
ECHNICAL DATA )