ULTIMHEAT : Differential pressure switch for printed circuits. Type ZH

SPNO contact : Type ZH

DIMENSIONS

Uses: Low voltage, high sensivity

Main applications: Electronic printed circuits. Detection of low positive, negative or differential pressure. Measurement of liquid levels, air flow, filters efficiency. Very small differential, about 2 millibars

Membranes: EPDM, dia 22 mm. Silicone or NBR on request

Fluid: water or air (no liquid input on the negative pressure inlet)

Fitting: two plastic spouts dia 4 mm for soft PVC tube 3x6 mm (1/8”)

Pressure: Differential

Housing: PA66, UL94 VO

Contact: single pole normally open, slow action.

Electrical rating: - Silver contact: max 1A 250V - Gold plated contact: max 100 mA, 24V - High rating micro-switch (medium and high pressure calibration only): 2HP 240V, 21(8) A 240V (UL, CSA VDE switch) - Low force micro-switch (set points less than 150 mbar): 1/4HP 6(1) A 240V ( UL, CSA VDE switch) - On request: up to 25A 250V

Action: momentary, close by pressure rise on positive pressure inlet

Set point calibration: factory calibrated and sealed, not field adjustable

Set point calibration limits: from 10 to 400 mbar

Differential: less than 5 mbar

Electrical connection: printed circuit terminal, dia 1.2 mm, 12.7mm spacing

Maximum pressure: 500 mbar (7 PSI)

Ambient temperature limits: 0 to 85°C