9 Configuration
9.2.3 Calibration
The sensor received a basic factory calibration however due to the
various installation conditions it’s required to perform a sensor
calibration in the compressor test stand, where the air delivery
according to ISO 1217. The steps of calibration are as follows:
1. Launch
S4C-FS
, and select
Settings
>
User
Calibration
.
2. Follow the onscreen instructions to perform the flow calibration.
Below is the GUI of the mobile app for the calibration page:
Apply User Calibration
Needs to be activated to perform the
calibration.
Compressor type
Select Load/Unload or VSD.
For Load/Unload types, the calibration is
offered at full load (1 point). For VSD
compressors there are up to 5 calibration
points available. It's recommended to
select them over the range of 10%...100%.
In general 3 points should be sufficient
(10%, 50%, 90%).
Act. Flow
This is the flow without the user calibration
as it is measured.
Ref. Flow
Manufacturer enters the flow measured by
the calibration stand in the factory.
Calibration points are sorted and user can
delete any of the calibration points.
It is recommended that the S431 is calibrated once a year. The easiest
way is to replace the unit with another sensor that has been newly
calibrated. Since the compressor specific settings have been stored in a
cloud database, the operator can download the settings of the replaced
sensor into the replacement sensor through the mobile app. The
replaced sensor can be return to a SUTO service facility for re-
calibration and maintenance.
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