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WIKA operating instructions, model GDM-RC-100
EN
14385258.01 04/2020 EN/DE
Switch contacts
Minimum switching
voltage and current
12 V, 10 mA
Calibration pressure
First switch point below filling pressure
Switching function
Change-over contact
Circuits
Galvanically isolated
Maximum number of
cycles
10,000 mechanical and electrical
Insulation resistance
contact
> 100 MOhm
Switch hysteresis
Measuring range
Hysteresis level
-1 ... +5 bar at 20 °C
Typically < 90 mbar
2)
-1 ... +7.5 bar at 20 °C
Typically < 150 mbar
2)
-1 ... +11.5 bar at 20 °C
Typically < 220 mbar
2)
Lower switch hysteresis on request
Permissible ambient conditions
Permissible ambient temperature
Operating temperature
-40 ... +80 °C [-40 ... +176 °F], gaseous phase
Storage temperature
-50 ... +80 °C [-58 ... 176 °F]
Ingress protection
IP65, IP67
Permissible air humidity
≤ 95 % r. h. (non-condensing)
Compensating diaphragm against condensation
Shock resistance
■
50 g/11 ms: no contact bouncing at a distance of 200 mbar
from the switch point
■
150 g: no damage in all axes and directions
Vibration resistance
■
4 g at a distance of 50 mbar from the switch point, no contact
bouncing (20 ... 100 Hz)
EMC tests
Dielectric strength
■
2 kV pin on grounding (case)
■
2 kV pin to pin (switch contact to switch contact)
■
1 kV pin on pin within switch contacts - 1 minute
Lightning
7 kV x 1.2/50 μs
1)
Only up to 70 °C ambient temperature.
At 70 ... 80 °C ambient temperature, the contacts must be operated with a maximum of 1 A.
2)
In accordance with BS 6134:1991, rate of pressure change 1 % of end value per second.
9. Specifications
