Beck. The factory-set pressure switches in Ex zones

Product catalog summary

Overview: The document provides technical specifications and guidelines for the Beck factory-set pressure switches designed for use in explosive zones (Ex zones 1, 2, 21, and 22). These switches are used to monitor overpressure, vacuum, or differential pressure in both liquid and gaseous media, including aggressive types.

Specifications:

Temperature Range: Operates between -20°C to +85°C.
Diaphragm Material: Options include NBR, Silicone, FKM, EPDM, with specific materials available upon request.
Electrical Rating: Maximum 100 mA / 24 VAC, 30 mA / 24 VDC.
Electrical Connection: Tab terminal 6.3 mm x 0.8 mm or push-on screw terminals.
Protection: IP54 / IP65 depending on the protection cap used.
Life Cycle: Mechanically exceeds 1 million cycles.

Pressure and Vacuum Ranges:

Overpressure: Ranges from 5 mbar to 12 bar, with specific switching differentials and tolerance bands.
Vacuum: Ranges from -5 mbar to -900 mbar, with defined switching differentials.
Differential Pressure: Ranges from 5 mbar to 50 mbar.

Installation and Safety:

Ensure compliance with applicable regulations during installation.
Use protection caps from the accessories program to meet Protection Class II.

Approvals and Conformity:

ATEX and EU RoHS Directive compliant.
Type examination by TÜV Südwest and DVGW.

Accessories: Includes various mounting brackets and protection caps with IP54 and IP65 ratings.

Ex i-Circuits: Suitable for use in potentially explosive zones with specific power and safety requirements.

Catalog excerpts

Beck. The factory-set pressure switches in Ex zones

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Pressure switch 901..Ex with factory-set pressure setting for Ex zones 1, 2 and 21, 22 Application Factory-set pressure switch monitoring overpressure, vacuum or differential pressure of liquid and gaseous - also aggressive - media . Pressure setting and switching differential are factory-set by the manufacturer. Temperature range Ambient and media temperature from -20°C to +85°C Diaphragm material Depending on media NBR, Silicone, FKM, EPDM For 901.30Ex Silicone, others upon request ATEX EC type examination Device category Ignition protection type Conformity Other approvals BVS 06 ATEX E 141...

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