YSI NiCaVis 701 IQ NI - Manual (Page 47)

NiCaVis 70x IQ NI
What to do if...
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Measured values too low
or too high
Display of ERROR
Cause Remedy
– Gas bubbles in front of the
measurement windows
– Check the installation position
of the sensor
– Measurement windows dirty – Clean the measurement win-
dows
Cause Remedy
– UV sensor not correctly con-
nected
– Check the assignment of the
terminal connections
– Load at a power supply mod-
ule too high
– Install another power supply
module in the vicinity of the
sensor
– IQ S
ENSOR
N
ET
cable to-
wards the NiCaVis 70x IQ NI
too long (voltage drop too
great)
– Install another power supply
module in the vicinity of the
sensor
– Electrical connection be-
tween power supply module
and NiCaVis 70x IQ NI is in-
terrupted
– Check the cable connection
step-by-step starting with the
power supply module, and
replace any defective cable
sections.
– Check the contacts on the MIQ
modules (stack mounting).
Clean any dirty contacts. Care-
fully bend back contact springs
that have been pressed flat or
bent (pay attention to sufficient
spring tension)