Differential pressure switch QPD25.003

The Siemens QPD25 differential pressure switch is used to monitor the gas/air pressure and the gas/air flow rate. If the pressure falls below or exceeds the set switching point, the connected circuit is interrupted or switched over.

Application
• For monitoring gas/air pressures or gas/air flows of oil consumption devices or gas consumption devices (burners, boilers, ovens) such as gas or oil burners or industrial heat treatment applications.
• Adjustable working pressure ranges up to 50 kPa (depending on pressure range)
• Suitable for a continuous operating pressure of up to 50 kPa
• The QPD25 is suitable as a gas differential pressure switch (absolute pressure)

Technical data QPD25.003
Permissible operating pressure: 50 kPa
Working pressure range: 0.04...0.3 kPa
Switching differential: 0.03 kPa
Factory setting: 0.04 kPa
Medium: air, natural gas, biogas, hydrogen
Switching voltage AC eff. max. 250 V, DC 24...48 V
Switching current AC eff. max. 6 A at cos? 1, AC eff. max. 2 A at cos? 0.6, AC eff. min. 20 mA, DC max. 1 A, DC min. 20 mA
Switching capacity: 750 VA
Weight: approx. 226 g
Installation position: Horizontal or vertical, but not overhead
Protection class IP54 according to EN 60529:1991
Type-tested and approved in accordance with EN1854