6 what to do if, What to do if -1, 6what to do if – YSI VisoTurb 700 IQ User Manual
Page 37
VisoTurb
®
700 IQ (SW)
What to do if ...
6 - 1
ba76039e01
01/2012
6
What to do if ...
The sensor
automatically switches
itself on and off
periodically after
commissioning
Mechanical damage to
the sensor
Display of OFL
Display of "----"
Measured value
fluctuating heavily
Measured values too low
Cause
Remedy
– The available power is
sufficient for the initialization of
the sensor, but not for the
operation of the cleaning
system. As soon as this is
switched on, communication
with the controller is
interrupted.
– Install another power supply
module as close as possible
to the VisoTurb
®
700 IQ (SW)
Cause
Remedy
– Return the sensor
Cause
Remedy
– Measuring range exceeded
– See log book
Cause
Remedy
– Measured value invalid
– See log book
Cause
Remedy
– Gas bubbles in the medium are
in front of the sapphire disc
– Check the installation position
of the sensor (see section 3.2
and section 3.3)
– Signal averaging time too short
for low values of turbidity
– Increase signal averaging
time
Cause
Remedy
– Sapphire disc polluted
– Clean sapphire disc (see