Operating
7.11 External totalizers and flow samplers
HydroRanger 200 HMI
134 Operating Instructions, 06/2018, A5E36281317-AC
Set Relays 2 to 4 (Level Alarms)
Level Source (2.8.1.2.)
2 Transducer 1 Sets Relay 2 as a high level
alarm for Transducer 1, with an
ON setpoint of 1.3 m and an OFF
setpoint of 1.2 m.
Relay Function (2.8.1.4.)
(Page 195)
2 Level
ON Setpoint (2.8.1.5.)
2 1.3
OFF Setpoint (2.8.1.6.)
2 1.2
Level Source (2.8.1.2.)
3 Transducer 2 Sets Relay 3 as a low level alarm
for Transducer 2, with an ON
setpoint of 0.2 m and an OFF
setpoint of 0.4 m.
Relay Function (2.8.1.4.)
3 Level
ON Setpoint (2.8.1.5.)
3 0.2
OFF Setpoint (2.8.1.6.)
3 0.4
Level Source (2.8.1.2.)
4 Difference or average Sets Relay 4 as a
alarm as it uses the differential
level point (3), with an ON set-
point of 1.0 and an OFF setpoint
of 0.9 m.
Relay Function (2.8.1.4.)
4 Level
ON Setpoint (2.8.1.5.)
4 1.0
OFF Setpoint (2.8.1.6.)
4 0.9
External totalizers and flow samplers
External totalizers are simple counters which count the number of relay clicks produced by
the device. This is generally used to keep track of Open Channel Monitoring (OCM) or
pumped volume totals. Note that both of these values are also stored in the device and are
available through communications.
Flow samplers are devices which take a sample of liquid when triggered by a relay click.
These samples are used to monitor water quality over time. Flow samplers can be driven by
OCM volume or by relay click volume settings depending on the application requirements.
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