RGF 300
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2.2.3 Connection of other sensors and control signals
Active sensors with : 0-20 / 4-20 mA current output (M vers.), and
0-10 Vdc voltage output (V vers.)
Connection can usually be made to the
rgf300
regulator with one or two active sensors, with current output
control signal (
0-20 mA
) or voltage output (
0-10 Vdc
) with conductors having two or three wires.
If the sensors have an earth (
Gnd
) as well as a signal (
IN
) reference, and they accept a
+24Vdc
(max.
40 mA
supply), they can be directly connected to and supplied by the
rgf300
regulator (
fig. 13
).
The diagram below shows the connection of two differential pressure transducers used to maintain constant
pressure / air delivery from a fan in a controlled air flow plant (laminar flow); also shown is the type of
operation (standard) and the operating regulation controls.
fig. 13
10
9
8
7
6
5
4
3
2
1
4-20mA
0-10Vdc
- Refrigerant
- Water
- Air Oil
- Vapor
- General Purpose
and
Differential
Transducer
Differential
Transducer
+
_
+
_
DIFFERENTIAL
+
GND
OUT
10V
+V
GND
IN 2
10V
+V
GND
IN 1
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