Beck. The adjustable pressure switches Prescal®

Product catalog summary

Overview: The Beck Prescal® 901 is an adjustable pressure switch designed for monitoring overpressure, vacuum, or differential pressure in both liquid and gaseous media, including aggressive types. It features an adjustable setting without the need for a pressure gauge, using a scaled adjustment knob.

Specifications:

Temperature Range: Ambient temperature from -20°C to +85°C; media temperature up to 85°C or 130°C depending on materials used.
Diaphragm Material: Options include NBR, Silicone, FKM (Viton®), and EPDM.
Electrical Rating: Standard version supports up to 10 A / 250 VAC and 2 A / 24VDC; low-voltage version supports up to 100 mA / 24 VAC and 30 mA / 24VDC.
Electrical Connection: Tab terminal 6.3 mm x 0.8 mm as per DIN 46244.
Life Cycle: Mechanically rated for over 1 million cycles.
Mounting Position: Can be mounted in any position, specific settings required for pressures below 100 mbar.
Protection: IP00 without cap, IP44/IP54/IP65 with protection cap; protection class II achievable with specific accessories.
Conformity: Complies with EU Low Voltage, RoHS, and ATEX Directives.

Pressure Connection Types: Available in tube and threaded connections with materials such as polyamide (PA), polyvinyldifluoride (PVDF), polyphenylensulfide (PPS), brass (CuZn40), and stainless steel (V2A).

Pressure Ranges:

Overpressure: Ranges from 5 mbar to 12 bar, with varying switching differentials and maximum working pressures.
Vacuum: Ranges from -5 mbar to -700 mbar.
Differential Pressure: Ranges from 5 mbar to 50 mbar.

Accessories: Includes various mounting brackets and protection caps with IP ratings of 44, 54, and 65.

Warnings: Installation must comply with applicable regulations, and instructions should be read before use.

Catalog excerpts

Beck. The adjustable pressure switches Prescal®.

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Pressure switch 901 Prescal® with adjustable setting Application Adjustable pressure switch monitoring overpressure, vacuum or differential pressure of liquid and gaseous - also aggressive -media The switching pressure can be adjusted without a pressure gauge using a scaled adjustment knob. Temperature range Ambient temperature from -20°C to +85°C Temperature of media up to 85°C or 130°C depending on material of pressure connection and diaphragm Diaphragm material Depending on media NBR, Silicone, FKM (Viton®), EPDM. For 901.8x Silicone, others upon request Electrical rating Standard version...

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