Vaisala HMM100 - Manual (Page 26)

User's Guide _______________________________________________________________________
24 ___________________________________________________________________ M211024EN-C
Wiring
2-wire Output
See Figure 13 below. Provide a 24 VDC supply voltage (see Figure 18 on
page 67).
0905-047
Figure 13 Wiring for 2-wire Output
3-wire Output
See Figure 14 below. Provide the required supply voltage according to
the output type:
10 ... 35 VDC or 19.2 ... 28.8 VAC for 0 ... 20 mA, 1 / 5 V output
15 ... 35 VDC or 19.2 ... 28.8 VAC for 0 ... 10 V output
0905-048
Figure 14 Wiring for 3-wire Output
When using the 3-wire output module, you may also connect a fourth
wire to the "Out -" terminal. It is internally connected to the "Vin -"
terminal. This connection is recommended when using the 0 ... 1 V
output.