Vaisala HMW90 Serie Guide Rapide page 11

To use a single power supply for the HMW92, connect
the positive terminals (+T and +RH) together.
-T +T -RH +RH
mA
= 0 ... 600 Ω
R
L
Wiring HMW93
Recommended wiring for long cables:
Relay -RH +RH
V
max. 50 VDC
500 mA R = 10 kΩ min.
L
3-wire connection with -Vs as common ground.
Maximum cable resistance is 2.5 Ω (24V supply,
0 ... 10 V output, relay not used).
Relay
-RH +RH
Power supply
10 ... 28 VDC
mA
-T +T -Vs +Vs
V
-T +T -Vs +Vs
V
V
R = 10 kΩ min.
L
Power supply
18 ... 35 VDC
or 24 VAC ±20%
Power supply
18 ... 35 VDC
or 24 VAC ±20%
EN
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