A5E33329501 SITRANS LUT400 (HART) – OPERATING INSTRUCTIONS Page 61
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Commissioning
External Sampler setup
Parameter
Setting/
Value
Description
Enable (2.11.4.1.) Enabled
By selecting Enabled, the external sampler is
now activated.
Multiplier (2.11.4.2.) 1000
In this example, the LUT440 will activate the
external sampler every 1000 flow units (
Flowrate
Units
defined above during initial application
setup).
Interval (2.11.4.3.) 24
In low flow conditions where the sampler may
not activate for extended periods of time, a relay
interval can be programmed to allow for sampler
activation after a defined number of hours. In
this example, activation should occur every 24
hours.
Relay Duration (2.11.4.4.) 0.2
Duration of time in seconds that the relay will
energize or "tick".
Assigned Relay (2.11.4.5.) Relay 2
Relay 2 has been selected for control in this
example as relay 1 has been allocated to the
Fail-safe alarm.
Relay Logic (2.11.4.6.)
Normally
Open
Default for control relay functions is Normally
Open. In this example, relay 2’s coil will be Nor-
mally Open, and will close for 0.2 seconds.
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