Alpha Moisture Systems DS1200-AMT Manual de instalación, puesta en marcha y funcionamiento - Página 6
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Note : - Do not install the sensor at this time. Wait until the commissioning stage as described later
4.3
Alarm Cable
•
Make the appropriate connections, noting the normally open and normally closed relay contact
positions.
4.4
Analogue Output Cable
•
Make the appropriate connections, ensuring that the correct polarity and the maximum load
specification is strictly observed.
4.5
Rear Connections:
4.6
Wiring the AMT
The AMT is a 2-Wire 4-20mA transmitter.
Typical electrical connection to generate a voltage output is shown below:
V o u t ma x = R s x 2 0 x 1 0 - 3
Note, the maximum value for Rs in this circuit can be calculated by the formula:
AM T
P i n 2
P i n 1
4 - 20mA Signal
Vout
SENSE
R s
RESISTOR
Page 3
+V s
P O W E R S U P P L Y
+ 1 2 V t o + 2 8 V
0V