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Figure 2. 4/20 mA Output Wiring Diagram
Electrical Power: 24 VDC regulated, 30 mA. With an ATMOS
enclosure the current draw is 400 mA max.
Respect minimum voltage requirements.
Outputs:
ATTENTION: The EC-FX-NH3 detector is shipped with a 100
ohm, 1/4 watt resistor in the green, four position terminal block,
across the Signal and Ground terminals (see Figure 3). This
resistor is needed to "fake out" the 4/20 mA loop if using the
Modbus RTU output. Only remove this resistor if using the 4/20 mA
output.
4/20 mA: Circuit board mounted sensor provides a linear 4/20 mA
•
output. Monitoring equipment may have a maximum input
impedance of 700 ohms.
OPERATOR MANUAL
equipped
®
13
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