6. Plug in the screw terminal blocks, close the cover, and tighten the screws.
7. Secure the cable to the pole using a zip tie, or on the wall using cable clips. Allow some
cable to hang down from the cable gland to prevent water from entering the transmitter
along the cable.
3.5
Wiring Devices With Analog Output
With HMDW110 transmitters ordered with analog output, you must always connect the
humidity measurement current loop (HUM, terminals 5 and 6) to power the transmitter.
Connecting the temperature measurement current loop (terminals 7 and 8) is optional.
8 T -
7 T+
6 HUM-
5 HUM+
A
+
-
A
Power supply
+
-
Power supply
2 x 4 ... 20 mA
R
L
= 0 ... 600 Ω
Figure 8 HMDW110 Wiring, Analog Output
HMDW110 User Guide M211726EN-D
24
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