HE905 Series

Solid State Vacuum Switch

1.6"-29.5" Hg range

This series is a rugged and reliable full range miniature solid state vacuum switch with excellent sensitivity, repeatability and set-point tolerance.

Features:

• Stainless Steel Construction
• Capsule Type Sensor
• Miniature Size
• Excellent Accuracy and Repeatability
• Field Adjustable or Factory Set, or Factory Set and Locked

Specifications:

NON-WETTED MATERIALS

• Body-300 series stainless steel.
• Lock ring-steel, zinc chromate finish.
• Electric switch housing-steel, zinc chromate finish.
• Plastic parts-nylon or PVC.

WETTED MATERIALS

• Capsule-17-7PH, proof - 125% of sensor capacity.
• Seal-O-Ring-Standard BUNA N (optional-EPR, Viton, Silicone, Neoprene, and other exotics).
• Locking Compound-Loctite #277
• Fitting-300 series stainless steel.

VACUUM SWITCH ADJUSTMENT (if field adjustable)

This model may be adjusted by loosening the lock ring and turning the electric switch housing clockwise to raise set point (in Hg, lower in TORR), counter clockwise to lower the set point (in Hg, higher in TORR). 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 3.5 ounces (with a standard 'W' interface).

PRESSURE CONNECTION

1/8-NPT male standard.

HE905 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" 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.