General Operation
7.10 External Totalizers and Flow Samplers
SITRANS LUT400
120 Operating Instructions, 07/2019, A5E33329501-AC
Enable (2.11.3.1.) (Page 215)
Enables External Totalizer Relay
Multiplier (2.11.3.2.) (Page 215)
Click once every 4310 units
Relay Duration (2.11.3.3.)
0.2 Activates the relay for 0.2 seconds
Assigned Relay (2.11.3.4.)
Relay 1 Sets relay 1 to be controlled by external totalizer
Relay Logic (2.11.3.5.)
(Page 216)
Normally
Closed
Use (if necessary) to change the behaviour of the
relay assigned to the totalizer.
Note
Ensure proper counting output
In case of running totalizers when a change is required, cycle the power to ensure proper
counting output of the relay between parameter settings.
7.10.3 Flow Sampler
Use the External Sampler (2.11.4.) (Page 216) function to activate the flow sampler relay
based on volume and time.
1 contact every x units, where x = value set
in Multiplier (2.11.4.2.) (Page 217)
Multiplier (2.11.4.2.) (Page 217) is preset to 1 so the
default number of contacts for a pumped volume cycle
is one contact per unit of volume.
Example: To click once every 4310 units, set Multiplier (2.11.4.2.) (Page 217) to 4310.
The totalizer source, and units depend on the volume configuration:
Vessel Shape (2.6.1.) (Page 180) =
Totalizers (2.16.)
Flowrate Units (2.15.3.7.)
Vessel Shape (2.6.1.) (Page 180) =
any setting other than NONE
Totalizers (2.7.3.)
Volume Units (2.6.2.) (Page 181)
By using Multiplier (2.11.4.2.) (Page 217), the relay contacts can be based on a volume
other than a multiple of ten.
Enable (2.11.4.1.) (Page 216)
Enables Flow Sampler Relay
Multiplier (2.11.4.2.) (Page 217)
Click once every 4310 units
Interval (2.11.4.3.) (Page 217) 2 Sets the INTERVAL (in hours) of the relay con-
Relay Duration (2.11.4.4.)
0.2 Sets the DURATION (in seconds) of the relay
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