Compensation
In many volume applications, the ambient atmosphere is other than air or at a
temperature other than 20 °C. Refer to Functional \ Temperature or \ Sound Velocity,
for details on compensating for such circumstances.
If it is noted that the MultiRanger Plus reading is consistently off by a constant amount
as compared to the physical reading, this may be compensated for by P-62. This tank
measurement offset might occur when P-3 or P-4 does not exactly match the tank
dimensions referenced for volume conversion. If the cause of the offset appears
below the relay setpoints, the setpoint parameters may need to be reset as these will
have shifted accordingly.
Custom Design Tanks Example ‘B’
Further to the Volume Example or the Custom Design Tank Example ‘A’, the liquid is
a glue giving off formaldehyde vapour. Velocity compensation will be required.
As the next two steps involve physical measurements, for
convenience sake, P-60 can be done before P-61.
select:
P-62 (optional to P-60) record present offset for reference
P-60 (optional) with the tank as full as permissible, without
going into the blanking zone, press "MEAS".
The MultiRanger Plus will take a measurement
and display the level. Press "meas" at least 5
times and insure that a stable reading is
being obtained.
Enter the "physical measurement".
The MultiRanger Plus will now calculate the
measurement offset to be used in future level
measurements. The offset reading will be
automatically entered into P-62 and can now
be viewed.
P-63 record present sound velocity for reference
PL-443 6 – 19
To Next Page
Loading...
Need help?
General
