Specifications

8
a) Connection of a 3-wire sensor to an INDUSTRIAL SCIENTIFIC central controller
- 1 wire (+) continuous power supply → No. 3
- 1 wire (-) continuous power supply (0 volt mass) → No. 2
- 1 output signal wire → No. 1
b) Connection of a 2-wire sensor to an INDUSTRIAL SCIENTIFIC central controller
- 1 wire (+) → No. 3
- 1 signal wire → No. 1
c) Connection of a 3-wire CTX300 sensor to a non-INDUSTRIAL SCIENTIFIC controller and
to an internal power supply.
(R) Maximum resistance = 200 Ω.
(1) 15 = VCC = 32
18 = VCC = 30 for CO2
Max I: 130 mA
1
2
3
Control Unit
Detector
+ 24 Vcc
GND
Sig
nal
3
2
1
Control Unit
Detector
+ 24 Vcc
Signal
3
2
1
3
2
1
-
Power
Detector
Control
Unit«
other »
3
2
1
+ 24 Vcc
GND
Signal
+
R
(1)

Formant la boucle de courant 4/20 mA sur 2 fils