Electrical Connections For A 2-Wire Test Item - WIKA CPH7650 Betriebsanleitung

4. Design and function

4.3.2 Electrical connections for a 2-wire test item

Example:
Wiring diagram of a pressure sensor from WIKA
(2-wire connection) which must be checked/
calibrated.
Example
Test item is a pressure sensor from WIKA with a mA signal:
1. Without its own power supply, the DC 24 V voltage must be activated via the menu
(see chapter 6.6 "Operating modes")
test item
2wire (mA)
2wire (mA)
3wire (mA)
3wire (V)
2. With its own power supply available
test item
2wire (mA)
2wire (mA)
3wire (mA)
3wire (V)
WIKA operating instructions, model CPH7650
24V
-
self-powered +
output
no sig+
yes
UB-
no UB+
UB- UB+
no
- 24V OUT +
24V
self-powered -
+
output
no sig+
yes
UB-
no UB+
UB- UB+
no
- 24V OUT +
Voltage
supply
V mA
- +
-
max. 12V max. 24mA
sig-
sig+
- mA /
- V +
V mA
- +
-
max. 24mA
max. 12V
sig-
sig+
- mA /
- V +
-
+
+
sig+
sig+
sig+
+
+
sig+
sig+
sig+
+
21
EN