HE903 Series

Solid State High Pressure Switch With Overpressure Protection

400-6000 PSI range

This series is a very sturdy miniature solid state pressure switch designed to take vibration and shock from the heaviest equipment. In addition, it also features a cushioned spike reducer to maintain perfect set point and switch function to pressures of 6000 PSI.

Features:

• Stainless Steel Construction
• Piston with O-Ring Style Sensor
• Miniature Size
• Excellent Accuracy and Repeatability
• Field Adjustable or Factory Set, or Factory Set and Locked
• 9000 PSI Proof

Specifications:

NON-WETTED MATERIALS

• Body-steel, nickel plated.
• Locking Compound - Locktite #277.
• Electric switch housing-steel, zinc chromate finish.
• Actuator - steel.
• Springs - steel.
• Plastic parts-nylon or PVC.
• Lock ring - steel, zinc chromate finish

WETTED MATERIALS

• Fitting-300 series stainless steel.
• Piston - 17-4 stainless steel.
• Seal-O-Ring-Standard BUNA N (optional-EPR, Viton, Silicone, Neoprene, and other exotics).

PRESSURE SWITCH ADJUSTMENT (if field adjustable)

This model may be adjusted by loosening the lock ring and turning the electric switch housing clockwise to lower pressure set point, counter clockwise to raise the pressure set point. Holding the electric switch housing in position, tighten the lock ring and check the pressure setting. Repeat above if necessary.

SETTING OPTIONS

Switches are normally supplied field adjustable, may be ordered factory set, or factory set and locked.

TEMPERATURE RANGE

-65° F to +225° F, a slight change up to 2% in the set point may occur below -10° F and above +125° F.

CYCLE RATE-SENSOR AND ELECTRICAL SWITCH

Not to exceed 22 CPM (cycles per minute).

WEIGHT

Approximately 4.5 ounces (with a standard 'W3' interface).

PRESSURE CONNECTION

1/8-NPT male standard.

HE903 SERIES PERFORMANCE TABLE

AVAILABLE FITTINGS

The fitting types below are "standard catalog" offerings. Some of the fittings below are available only for an additional cost. If you do not see your preferred fitting listed, please contact our Sales Department as we do offer custom fittings.

AVAILABLE ELECTRICAL INTERFACES

The electrical terminations below are "standard catalog" offerings. For our "W" and "L" styled interfaces we have an exhaustive listing of Pin/Connector terminators from such makers as AMP, Molex, Turk, Bendix, Cannon, Burndy and others available to make our product ready for your specific application.