WIKA GDM-RC-100 Mode D'emploi page 15

5. Commissioning, operation
Wiring scheme
Wiring scheme
12 13 11 21 23 22 32 33 31 41 43 42
Terminal
S1
Status of switching output: Not pressurised
Schematic diagram of the switch behaviour with rising or falling gas density over time:
P
@ 20 °C
SP1
SP2
SP3
SP4
Switches Terminals
S1
11 - 13
11 - 12
S2
21 - 23
21- 22
S3
31 - 33
31 - 32
S4
41 - 43
41 - 42
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.
WIKA operating instructions, model GDM-RC-100
S2


S3

EN
S4
t
15