15
WIKA operating instructions, model GDM-RC-100
EN
14385258.01 04/2020 EN/DE
Wiring scheme
Schematic diagram of the switch behaviour with rising or falling gas density over time:
The actual order of the switch points is customer-specific.
If the gas density monitor is not pressurised, all contacts are not actuated mechanically.
Fourth switch point: Pin 41 is connected to pin 42 (1).
If the gas density monitor is pressurised, an overtravel of the switch point will switch the
switch contact from pins 41-42 to pins 41-43.
The switch contact will not be switched back from pins 41-43 to pins 41-42 until the
value drops below the switching threshold.
S4
S3
S2
S1
12 13 11 21 23 22 32 33 31 41 43 42
Status of switching output: Not pressurised
GDM-R
C-100
Terminal
Wiring scheme
SP1
SP2
SP3
SP4
P
@ 20 °C
t
S1
S2
S3
S4
11 - 13
11 - 12
21 - 23
21- 22
31 - 33
31 - 32
41 - 43
41 - 42
Switches Terminals
5. Commissioning, operation
