Flow Sampler; Based On Volume And Time - Siemens HydroRanger 200 HMI Operating Instructions Manual

Operating
7.11 External totalizers and flow samplers
7.11.3

Flow sampler

7.11.3.1

Based on volume and time

To trigger a flow sampler relay based on flow, use Relay Function (2.8.1.4.) (Page 195) =
Flow Sampler and set the other parameters for the selected relay:
Counter formula
1 Contact per Multiplier (2.10.1.2.) (Page 211) x 10
Operation
OCM [Sensor Mode (2.1.3.) (Page 163) = Flow
rate in open channel]
By using a mantissa [Mantissa (2.10.2.2) (Page 213)] and an exponent [Exponent
(2.10.2.3.) (Page 214) ], the relay contacts can be based on a volume other than a multiple
of ten.
During the periods of low flow, the sampler may be idle for lengths of time. Program Relay
Interval Setpoint (2.8.2.4.) (Page 202) to a time interval in hours, to drive the sampler. The
sampler will operate based on the volume of flow or the time interval, whichever comes first.
136
units
Exponent (2.10.2.3.)
Units source parameter
Maximum Flow (2.13.4.3.) (Page 243) or
Flowrate Units (2.13.4.7.) (Page 245)
Operating Instructions, 06/2018, A5E36281317-AC
HydroRanger 200 HMI