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A pressure gauge with one or two contacts is an easy solution to have at the same time a permanent reading of process pressure with a survey of limit pressure over ranges. The pressure indication is done on a 100 mm or a 160 mm dial pressure gauge (up to 4 contacts). The contact is actuated as the pressure index come over.
The contact is actuated instantaneously; the hysteresis is short, about 0.5%. They may not be use when there are vibrations on the process or with aggressive ambient conditions. They must be used in a dry (not filled) pressure gauge case.
Technical features
Nominal voltage: 250 V, as a maximum
Release or priming current: 0.7 A as a maximum
Load current: 0.36 A as a maximum
Switching power: 10 W as a maximum
Contacts: Ag 80 / Ni 20
Accuracy: 0.5% F.S.
They are suitable for most of applications, even with weak vibrations. The switch actuates with the help of a spring for a quick release. They must be used in a dry (not filled) pressure gauge case.
Technical features
Nominal voltage: 250 V, as a maximum
Release or priming current: 1.0 A as a maximum
Load current: 0.6 A as a maximum
Switching power: 30 W as a maximum
Contacts: Ag 80 / Ni 20
Accuracy: from 2 to 5% F.S.
These switches do not have electrical contact, as per standard DIN 19234. They have a greater life than the magnet switches and a better accuracy. They can be used with silicone filled cases. The output signal reflects the location of the pressure index inside the magnetic field of the switch.
Technical features
Load voltage: 8 V DC (Ri =1 kOhm) as a maximum
Nominal voltage: 5 to 25 V
Consumption:
> 3 mA (open circuit output)
< 1 mA (closed circuit output)
Accuracy: 0.5% F.S.
With a relay RDN 11, connected, the intrinsic safety protection could apply for 1 & 2 zones on EEx ib II C T6, please request more information to us.
