Vaisala HMT130 - Manual (Page 25)

Chapter 3 ________________________________________________________________ Installation
VAISALA ________________________________________________________________________ 23
Connections
1011-162
Figure 11 HMT130 Component Board
The following numbers refer to Figure 11 above:
1
= Optional LCD display
2 = Indicator LEDs
3 = Adjustment buttons
4 = RS-485 bus termination switch
5 = Service port
6 = Relay terminals
7 = RS-485 bus
8 = Analog outputs
9 = Power supply connectors
SERVICE PORT
ADJ
+
-
RH
T
485-
485+
GND
REL
C
A
L
SG
ND
CH
1
CH
2
S
H
IE
LD
V
IN
–
VI
N
+
485 TERM
SERVICE PORT
ADJ
+
-
RH
T
485-
485+
GND
REL
C
A
L
SG
ND
CH
1
CH
2
S
H
IE
LD
V
IN
–
VI
N
+
485 TERM
2
5
3
4
1
9 8 7 6