ELTRA ONH-2000 - Page 126

 2002 by ELTRA GmbH Germany – January 2002 – Service Manual OH 900 / ON 900 / ONH 2000
4.2-9
IR + TC analogue signals measured in the electronic unit
7 IR Temperature control
3 Pump
0 Low Oxygen IR Signal
4 TC Signal N/H
2 Oxygen IR Signal
4 Auto zero N/H
2 Oxygen auto zero
0 Low Oxygen auto zero
1
5
6 Furnace power
3
5
6 Low N/H TC Signal
7
(Control voltages)
OUTPUTS
(Detector signals)
INPUTS
MP68 Electronic rack -18005-
1 Gas flow
Test
points
37 - pin plug
ON/OH900
18007
GND
+15V
-15V +5V