Wiring; Dual 4-20 Ma Output Wiring (Model 225-Rhp-2S11); Dual 0-5 V Output Wiring (Model 225-Rhp-2S33) - Novalynx 225-RHP-2S Series User Manual

NovaLynx Corporation
mounting flange is flush to the duct. Run one or two straps (or long cable ties) around the duct to hold
the enclosure in place.

6 WIRING

6.1 Dual 4-20 mA Output Wiring (Model 225-RHP-2S11)

Dual 4-20 mA output units may be powered with a 10-35 VDC supply. The transmitter is designed as a
2-wire 4-20 mA device with two channels. The channels are common on the positive side of the current
loop. Sensor excitation power is derived from the RH channel, so power must always be applied to that
channel. If the temperature channel is not used, it can be left disconnected.
Note: If the RH output is not required, wire the "-" terminal of the power supply to terminal 1.

6.2 Dual 0-5 V Output Wiring (Model 225-RHP-2S33)

Dual 0-5 V units may be powered with 15-35 VDC or 15-29 VAC. Note polarity when using DC power.
The channels are common on the negative side. If desired, the RH or temperature output may be used
by itself.
225-RHP-2Sxx Page 6 January 2021