testo 6621 - Tips and assistance
16
3-conductor technology (2 analog outputs active)
All earth connections are connected to each other (= one common earth).
Attention!
Incorrect polarity wil destroy the instrument (instrument not reverse
polarity-proof).
Connections for voltage supply: connect common earht to pin 2!
testo 6621-A
A01 (Wall)
View of wiring side (rear of housing)
testo 6621-A
A02 (Duct)
View of wiring side
1
2
3
4
5
6
+
-
+
-
+
-
U
rH
T
~
24V~
1
2
3
4
5
6
+
-
+
-
+
-
U
rH
T
- +
Содержание 6621
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