wtw inoLab Oxi Level 2 Operating Manual page 56

What to do if...
AR flashes for a
longer time
Probe symbol
flashes
LoBat display
to display to
to to
Measured values too
Measured values too
126
Cause
No stable measured value
– Membrane contaminated
Cause
– Calibrating interval expired – Newly calibrate
Cause
– Batteries almost depleted
Cause
– Timeout of the interface
Cause
low
– Insufficient flow
Cause
high
– High amount of dissolved
substances
– Air bubbles bump on the
membrane with high
velocity
– The carbon dioxide
pressure is too high -
> 1 bar
Remedy
– Clean membrane
Remedy
measuring system
Remedy
– Replace batteries
Remedy
– Checkout connected
instrument
Remedy
– Provide flow to the
probe
Remedy
– Correct solubility
function using the
salinity equivalent
– Avoid direct flow to the
membrane
– Measuring not possible