Model 7PSD
Solon Model 7PSD
Differential Pressure Switch, Diaphragm Sensing Element
The Model Series 7PSD Pressure Switch is designed for low differential pressure applications. This device employs Solon's sensitive and rugged switching mechanism. Unlike most "inline" pressure switch designs, the Solon mechanismis frictionless and amplifies the movement of a large area, differential pressure diaphragm assembly. This results in improved life, repeatability, and lower deadbands. The rugged, cast aluminumhousing 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. These electric switches are available in a variety of configurations including adjustable switch differential (dead band), D.P.D.T., High-Low operation, and manual reset. 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 pressure-sensing element uses strong Buna N elastomer diaphragms. Other diaphragm materials are available.
| PHYSICAL DATA (Standard) |
|
| MaximumAmbient Temperature: |
180°F |
| MinimumAmbient Temperature: |
-20°F |
| Pressure Connection: |
1/4 NPT |
| Electrical Connection: |
3/4 NPT |
| Housing: |
Cast Aluminum |
| Deadband: |
Fixed |
| 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 |
| DiaphragmMaterial: |
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.
