Brochure/Catalogue

Sensor isolation

Compact and powerful solid-state relays for isolation sensor signals

In order to reliably decouple sensor signals from the field, space-

saving and fast-switching coupling elements are required. We offer

special solid-state relays for sensor isolation, as well as relay modules

with gold-plated contacts for reliable switching of small currents and

voltages, as they typically occur when switching sensor signals.

Solid-state relay for sensor isolation

As there is often a high number of switching cycles in sensor isolation,

it makes sense to use solid-state relays. They have no mechanical wear

and therefore work reliably in the long term. Our solid-state relays are

extremely compact and, thanks to suitable accessories, enable quick

installation. By using TERMSERIES interface adapters in conjunction

with pre-assembled cables, the wiring time can be reduced further.

Electromechanical relays with gold contacts

In applications where sensor isolation is only carried out at longer intervals

and with low power (<30V/10mA), oxide layers can form on the contacts.

This usually occurs in applications where signals are forwarded to control

inputs or PLC systems. Due to the low loads, there is not enough light arcing

at the contacts to remove the oxide layer during switching. Therefore,

relay modules with oxidation-resistant gold contacts are used.

C.40 2737920000

Application range

Sensor isolation – Overview