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Flow is shown
despite zero flow.
Sensor contaminated
Please consult your sales partner
The device is being operated with a
different gas from its calibration.
For multi-gas instruments, you can
set the appropriate gas type
Offset due to mounting position
Particularly with small measurement
ranges, heavy gases and gauge
pressures > 5 bar, a zero-point offset can
occur where the mounting position is
vertical >> chimney effect. Where
possible, mount the device horizontally
The manual valve
is leaking
Contaminated valve
Flush the valve repeatedly with
clean dry nitrogen
Meter does not
indicate the
expected value.
Leakage
Flow rate > than reference:
Leakage between measuring device and
your reference
Flow rate < than reference:
Leakage upstream of the measuring
instrument
Contamination
With contamination by sealing tape, for
example, it is possible that the flow divider
is partially blocked. In this case the device
displays more than the reference. Please
consult your sales partner
The device is being operated
with a different gas than
calibrated.
Connect the intended gas, or change the
type of gas in the 'Calibration' menu
Different reference conditions
Verify “Normal” or “Standard” conditions
Inlet pressure is too low
Check your inlet and outlet pressures
Pressure drop too high
Check for blockage or polution. Check
fittings ID
Error
Possible causes
Measures
Unit, backlight or
display unexpectedly
switched off
Battery empty
Replace battery
Menu settings incorrect
Adjust the auto off menu’s
Unit always enters
service mode when
switched on
Firmware damaged
Perform a firmware upgrade as described in
this manual. If the problem remains please
consult your sales partner.
Out of Range
Wrong unit selection
Select a unit that fits better to the current
flow.
Forgot Password
Contact the factory or distributor
Please consult your sales partner
Totalizer shows 9999999 Overflow totalizer units
Select a different unit (try m3n or kg)
Disfunction alarm
contacts
An external magnet can
unintentionally influence the
alarm contacts
Please remove the interfering magnet
Touch display does
not work properly
Calibration issue with touch screen
Apply calibration procedure for touch
screen. See
If you need any support please contact us by e-mail to Customer Service:
[email protected]
6.11. Pressure loss
The following figures show examples of the pressure drop of a red-y compact
(measuring instrument only, not the valve)