The factory-set differential pressure switch 911.82

Product catalog summary

Applications
The factory-set differential pressure switch 911.82 is designed for monitoring overpressure, vacuum, and differential pressure of air or other non-combustible, non-aggressive gases. It is suitable for applications such as monitoring air filters and ventilators, providing overheating protection for fan heaters, monitoring flows in ventilation ducts, and offering frost protection for heat exchangers.

Specifications

Temperature Range: Operating from -20°C to +85°C; Storage from -40°C to +85°C.
Switching Pressure: Factory setting between 20 to 1000 Pa.
Switching Differential: Factory setting between 10% to 20% of the switching pressure, minimum 10 Pa.
Accuracy: Uncertainty ±10%, minimum ±10 Pa; Repeatability ±1%, minimum ±3 Pa.
Maximum Operating Pressure: 10 kPa.
Medium: Air, non-combustible and non-aggressive gases.
Diaphragm Material: Silicone, tempered at 200°C, free of gas emissions.
Housing Materials: Plastic for switch body and cover.
Life: Mechanically more than 1 million cycles.
Weight: With cover 94 gr, without cover 82 gr.
Pressure Connections: Two plastic pipe connection pieces (P1 and P2), external diameter 6.0 mm.
Electrical Rating: Standard version: max. 1.5 A (0.4 A) / 250 VAC; Low-voltage version: max. 0.1 A / 24 VDC.
Electrical Connections: Tab terminal 6.3 mm x 0.8 mm or push-on screw terminals.
Protection: IP54 or IP65 with cover, IP00 without cover.
Protection Class: Class II with cover.

Compliance and Standards
The device complies with EU Low Voltage Directive, EU RoHS Directive, and EU Gas Appliances Directive. Specifications are according to EN1854 with deviation ≤±15%, minimum ±10 Pa, and drift ≤±15%.

Order Matrix and Accessories
The order matrix provides options for pressure ranges, switching contacts, fitting methods, adjustment knobs, IP protection categories, and packaging. Accessories include various mounting brackets and Climaset® kits.

Catalog excerpts

The factory-set differential pressure switch 911.82-1

The factory-set differential pressure switch 911.82 Applications Factory-set differential pressure switch for monitoring overpressure, vacuum and differential pressure of air or other non-combustible, non-aggressive gases. Class of control and regulation function: A Possible fields of application include: • Monitoring air filters and ventilators • Overheating protection for fan heaters • Monitoring flows in ventilation ducts • Frost protection for heat exchangers Versions Customer specific adjusted values for switching pressure and switching differential Temperature range Operating temperature from -20°C to +85°C Storage temperature from -40°C to +85°C Switching pressure Factory setting between 20 ... 1000 Pa Switching differential Factory setting between 10% ... 20% of the switching pressure, min. 10 Pa Accuracy of the switching pressure @ 20°C Uncertainty ±10%, min. ±10 Pa Higher accuracy on request. Maximum operating pressure 10 kPa Medium Air, non-combustible and non-aggressive gases Diaphragm material Silicone, tempered at 200°C, free of gas emissions Other materials available on request. Housing materials Switch body and cover of plastic Life Mechanically more than 1 million cycles Weight With cover 94 gr, without cover 82 gr Pressure connections 2 plastic pipe connection pieces (P1 and P2), external diameter 6.0 mm: P1 for connection to higher pressure (marked +) P2 for connection to lower pressure (marked -) Electrical rating Standard version: max. 1.5 A (0.4 A) / 250 VAC Electrical connections Tab terminal 6.3 mm x 0.8 mm in accordance with DIN 46244 or push-on screw terminals Cable conduit with cable strain relief Protection IP54 or IP65 with cover, IP00 without cover Protection class Protection class II is only met by using a cover. The pressure switch without protection cap is provided for installation in equipment. The construction of the equipment and the type of installation determine the protection class. Warning Read instructions before use. This regulating and control unit must be installed in compliance with the applicable regulations. CE Conformity Each depending on technical version: EU Low Voltage Directive; EU RoHS Directive, EU Gas Appliances Directive Specifications according to EN1854 Deviation: <±15 %, min. ±10 Pa Drift: <±15 %

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The factory-set differential pressure switch 911.82-2

911.82_data_english 7091-5 Technical data subject to change without prior notice. Copyright© 2021 Beck Sensortechnik GmbH Accessories Article-No. Metal mounting bracket S-shaped 6402 Metal mounting bracket L-shaped 6401 Snap-on plastic bracket, S-shaped 6482 Snap-on plastic bracket, L-shaped 6481 Climaset® consisting of 2m PVC piping and two plastic nipples 6555 Climaset® consisting of 2m silicone piping and two plastic nipples 6557 Climaset® consisting of 2m PVC piping and two angled metal pipes 6550 Climaset® consisting of 2m silicone piping and two angled metal pipes 6556 Set consisting of...

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