Vaisala HMW90 Serie Guide Rapide page 12

Wiring TMW92
TMW92 is loop powered. Minimum supply voltage
depends on loop resistance: 10 ... 28 VDC at 0 Ω load,
20 ... 28 VDC at 500 Ω load.
-T +T
Wiring TMW93
Recommended wiring for long cables:
Relay
max. 50 VDC
500 mA
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
10
mA
-T +T -Vs +Vs
V
R = 10 kΩ min.
L
-T +T -Vs +Vs
V
R = 10 kΩ min.
L
Power supply
10 ... 28 VDC
= 0 ... 600 Ω
R
L
Power supply
18 ... 35 VDC
or 24 VAC ±20%
Power supply
18 ... 35 VDC
or 24 VAC ±20%