Oldham ctx 300 - Connection of 2-Wire 4-20 Ma Sensor to Non-Oldham Control Unit; Connection of 3-Wire CTX300 Sensor to Non-OLDHAM Control Unit

3 - Installation and connection
15
Connection of a 3-wire CTX300 sensor to a non-OLDHAM control unit with an
internal power supply
Figure 7: Connection of a 3-wire CTX300 sensor to a non-OLDHAM control unit.
(R) Maximal load = 200 Ω.
(A) Power supply 15 ≤ Vcc ≤ 32.
18 ≤ Vcc ≤ 30 for CO
2
sensor.
I max = 130 mA.
Connection of a 2-wire 4-20mA sensor to a non-Oldham control unit and to an
internal power supply
Figure 8: Connection of a 2-wire 4-20mA sensor to a non-Oldham control unit.
(A) Power supply 15< VCC<32V. I max = 30 mA.
Other control
unit
Detector
+24 VDC
0V
Signal
Other control
unit
Detector
+24 VDC
Signal