Vaisala HMW90 Serie Kurzanleitung Seite 10

General Wiring Instructions
When wiring, observe the terminal label on the
mounting base. Maximum wire size is 2 mm
Wiring HMW92
HMW92 is loop powered. You must connect the RH
channel of the HMW92, even if you only want to
measure temperature. Connecting the T channel is
optional.
-T +T -RH +RH
Minimum supply voltage depends on loop resistance:
10 ... 28 VDC at 0 Ω load, 20 ... 28 VDC at 500 Ω load.
8
mA
mA
You can bring the cable
to the housing from
above or from
behind (recommended).
If you are wiring a
GMW90 series
transmitter from above,
use a < Ø 5 mm cable,
and route it from the
left side of the
mounting base.
Power supply
10 ... 28 VDC
= 0 ... 600 Ω
R
L
Power supply
10 ... 28 VDC
= 0 ... 600 Ω
R
L
2
(AWG14).