Belimo 22WDP-135 - liquid differential pressure sensor

Belimo 22WDP-135 – differential pressure sensor

The sensor measures the pressure difference between the medium supplied to either side of its internal diaphragm. It is designed for stationary heating, ventilation and air conditioning systems.

Key specifications

• Differential pressure measuring range: 0...6 bar (0...87 psi).
• Output signal: 1x 4...20 mA, max. resistance 900 Ω.
• Nominal voltage: DC 24 V; voltage range: DC 13.5...26.4 V.
• Media listed in the data sheet: water, water-glycol mixture and steam.
• Pressure connection: G 1/4"; electrical connection: connector for a 0.5...1.5 mm² cable.
• Degree of protection: IP65 / NEMA 4.
• Positive differential overpressure: 16 bar; negative differential overpressure: -1 bar; burst pressure: 21 bar.
• Accuracy: ±1% of measuring range at -5...75°C [23...167°F].

The measuring range applies to differential pressure (dp), not operating pressure relative to ambient pressure (prel). Measurement is not possible within the differential overpressure range. Protection against freezing must be provided at medium temperatures <2°C [<36°F].