AMMONIA User Manual
AMMONIA_User 9/09
39
3.0 Flowswitches & Contact Sets
3.1 Contact Sets
Flowswitch:
Provides a set of contacts that close when there is flow past or through the sensor.
Flowswitch contact sets are used to permit the sensor measurement.
Contact Set State
Operating Issues / Notes
Flowswitch
Flow:
OK to turn ON relay actuated
device or validate sensor
measurements.
No Flow:
Immediately turns OFF a
relay actuated device or suspends
sensor measurement.
Contact set closes when flow measured.
Default: Connect to Analyzer input ‘
S
’
A manual RUN/STOP switch may be used
in place of or in series with a Flowswitch.
Dry Contact Sets:
Contact sets connected to the Analyzer must be ‘dry’, without AC or DC voltage on either of the
contact set wires. Contact sets cannot be shared between the Analyzer and any other Analyzer
type or automation system.
Sidebar:
Volume & Contact Set Inputs:
Analyzer inputs ‘
O
’ through ‘
V
’ may be set individually to be a water meter or a contact set.
The Analyzer is defaulted to meters at inputs ‘
O
’ to ‘
R
’ and contact sets at inputs ‘
S
’ to ‘
V
’.
Phantom Inputs:
Analyzer inputs ‘
W
’ through ‘
Z
’ do not have physical terminals
but may be enabled individually as either water-volume meters or contact sets.
Phantom meters are used as ‘
Rate-to-volume’
or ‘
Copy Volume
to’
targets.
Phantom contact sets are used to ‘
Mirror’
Analyzer outputs and then to
sequence or block other Analyzer outputs