Thermo Scientific HB-S200, User Manual

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Sarasota 200 Ultrasonic Multipath
Flowmeter
Section 5, COMMISSIONING Page 5-2 Thermo Fisher Scientific
COMMISSIONING
5.4.3 Auxiliary levels – analogue input
Set the input range. This allows the input to be linearised, but most level devices will be
sufficiently linear and only need 2 points to define the input. On the table, define 4 mA as the
minimum, 20 mA as the maximum and enter the depth offset (level above datum).
5.5 Outputs
The outputs are selected from analogue and relays.
Analogue outputs may be forced to a value of mA which may be entered via the PC. See
“Loop Test”, Appendix 1, A1.4.1.2. This is a valuable tool for setting up the link to peripheral
equipment. The forced values may be confirmed by a calibrated multi-meter.
Correspondence between the displayed selected parameter value and the output should be
checked. It is possible to force the outputs by temporarily changing the set-up, for example
changing the level datum will affect not only the apparent level measurement but also the
flow.
Alarm thresholds may be altered to check relay operation.
Alarm outputs may be checked by a calibrated multi-meter and verified as being received by
the destination device.