Chapter 2 Installation
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6
2.4. Wiring
DM3000
Identification of terminal
+12VDC: Dissolved oxygen
AGND: Dissolved oxygen sensor -
RS485-A: Dissolved oxygen sensor communi
RS485-B: Dissolved oxygen sensor communication -
NC: Null
NC: Null
485A+: RS485 communication interface A+
485B-: RS485 communication interface B -
I+: 4~20mA
I -: 4~20mA output -
HO: High alarm normally open
HC: Low alarm normally closed
COM: Common terminal
LO: Low alarm normally open
LC: Low alarm normally closed
COM: Common terminal
220V L: AC220V live wire
NC: Null
220V N: AC220V neutral wire