Solon Model 7PS Vacuum Pressure
The Model Series 7PS Vacuum/Pressure Switch is designed for low vacuum and pressure application where it is useful to have both pressure and vacuum settings in one device. These switches are very versatile and can be built with up to four set points either above and / or below atmospheric with just one process connection. This device employs Solon's sensitive and rugged switching mechanism. Unlike most "inline" switch designs, the Solon mechanism is frictionless and amplifies the movement of a large area diaphragm. This results in improved life, repeatability, and lower deadbands. The rugged, cast aluminum housing can be specified 7PSW, watertight; or 7PSX, explosion proof. The housing is large enough to accommodate up to four full size S.P.D.T. electric switches. In addition many switching configurations can be supplied with electric switches that have:
- Low switch differentials (dead band).
- High direct current ratings.
- Gold contacts.
- Hermetically sealed contacts.
The standard sensing element uses a strong Buna N elastomer diaphragm. Other diaphragm and wetted area materials are available.
PHYSICAL DATA (Standard)
Maximum Ambient Temperature: 180°F
Minimum Ambient Temperature: -20°F
Vacuum Connection: 1/4 NPT
Electrical Connection: 3/4 NPT
Housing: Cast Aluminum
Sensitivity: 1/2% of range (for one SPDT Switch)
Drift: <1% of range (100,000 operations)
Weight: Approx. 6 lbs.
Contact Ratings: 15A -125, 250, 480 VAC
Port Material: Aluminum
Diaphragm Material: Buna N
Set Point Adjustment: Screw type, field adjustable
No. Contacts: 1, 2, 3 or 4 S.P.D.T or 1 D.P.D.T.
Contact Listings: UL Recognized, CSA Certified
Underwriters Laboratories, Inc. Listed: Industrial Controls Equipment Type 4 & 12, File E130423, Pressure Operated Switch for Hazardous Locations, Class I, Groups C & D; Class II, Groups E, F, & G File E65371.
Canadian Standards Association Certified: Industrial Control Equipment Type 4 & 12, LR88975. Switches Pressure Type for Hazardous Locations, Class I, Groups C & D; Class II, Groups E, F & G, LR88975.