Model 7PSDO
Solon Model 7PSDO
Differential Pressure Switch, Diaphragm Sensing Element
The Model Series 7PSDO Differential Pressure Switch is designed to sense low differential pressures between high pressure sources. The high pressure seals are
opposed stainless steel bellows assemblies, while the differential pressure is sensed by a diaphragm clamped between these bellows assemblies. The diaphragm
has a large area to accurately sense Low Differential Pressure, and during an over-pressure the diaphragm is fully supported. The design is symmetric such that
both the HIGH or LOW pressure sides of the element can withstand the maximum pressure with the opposite side at atmospheric pressure. The rugged cast
aluminum housing incorporates Solon's standard accurate switching mechanism, and can be specified 7PSWDO, watertight; or 7PSXDO, explosion proof.
The housing is large enough to accommodate up to four full size S.P.D.T. electric switches. The standard differential pressure-sensing element is constructed of
a strong aluminum alloy using a Buna N elastimer diaphragm. Other diaphragm and wetted area materials are available.
| PHYSICAL DATA (Standard) |
|
| Maximum Ambient Temperature: |
180°F |
| Minimum Ambient 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 |
| 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 |
