Pressure switch Dungs NB150A4 210931

Dungs 210931 NB150A4 differential pressure switch are adjustable pressure switches for automatic burner controls. Dungs 210931 NB150A4 pressure switches are suitable for switching a circuit on, off or over on changes in actual pressure value relative to the set reference value. The reference value (switching point) is adjusted on a setting wheel provided with a scale. Test nipple integrated in metal housing as standard. Pressure monitoring in firing, ventilation and air-conditioning systems. Suitable for gases of families 1,2,3 and other neutral gaseous media. Single-acting pressure limiter in pressure range. The pressure limiters work without using any auxiliary power. Dungs 210931 NB150A4 pressure switch technical data: Setting range: 30-150 mbar Max. operating pressure: 500 mbar (50 kPa) Ambient temperature: -15 °C to +60 °C Medium temperature: -15 °C to +60 °C Storage temperature: -30 °C to +80 °C Housing: aluminium die casting Switch: Polycarbonate Membrane: NBR Degree of protection: IP 54 as per IEC 529 (EN 60529) Setting tolerance: ± 15% switching point deviation based on the setpoint and with unit installed in a vertical position Dungs 210931 NB150A4 differential pressure switch approvals: EC type test approval as per EC Gas Appliance Directive: CE-0085 AO 3220 EC type test approval as per EC Pres- sure Equipment Directive: CE0036 Approvals in other important gas-consuming countries. Special designs for the North American market with UL, FM and CSA registrations.