Differential Pressure Switches- Series PG
External adjustment, visible dial,hermetically sealed snap or mercury switch.
Large Diaphragm sensitivity and time proven dependable design are combined in Model PG Differential Pressure Switches. Visible dial reduces "start up" time and helps prevent calibration errors. External adjustment allows set point change without removal of cover. Unit is listed by U.L., FM. And CSA.
PHYSICAL DATA
| Max. Pressure HP Connection: | 20 psig |
|---|---|
| Max. Pressure LP Connection 30" water range: |
2 psig |
| Max. Pressure LP Connection 5 psid range: |
10 psig |
| Temperature Limits: | 0-180° F. |
| Pressure Conncetions: | High Pressure (Back) Low Pressure (Front) |
| Electrical Rating: | See chart |
| Conduit Opening: | 1/2" conduit. |
| Wiring connections: | Screw type terminals, (3) for SPDT type, (2) for SPST type |
| Switch Type: | Hermetically sealed snap, gold contact snap or mercury swtich |
| Set Point Adjustment: | Screw type, external visible. |
| Housing: | Heavy gauge steel. |
| Diaphragm: | Fairprene. |
| Calibration Spring: | Plated steel. |
| Weight: | 7 lbs. |
| Installation: | Vertical |
FACTORY STOCKED MODELS
| Model Number |
Adj. Oper. Range |
Maximum Deadband |
Switch Type1 |
Electrical Rating Either AC or DC |
|---|---|---|---|---|
| PG-153-P1 PG-153-P2 PG-3-P1 PG-3-P2 PGW-153-P1 PGW-153-P2 PGW-3-P1 PGW-3-P2 |
1 - 30" water 0.5 - 5 psid 1 - 30" water 0.5 - 5 psid 1 - 30" water 0.5 - 5 psid 1 - 30" water 0.5 - 5 psid |
1.9" .04 psid 1.3" 0.3 psid 1.9" 0.4 psid 1.3" 0.3 psid |
SPDT SPDT SPST SPST SPDT SPDT SPST SPST |
4A @ 120V., 2A @ 240V 4A @ 120V., 2A @ 240V 6A @ 120V., 3A @ 240V 6A @ 120V., 3A @ 240V 4A @ 120V., 2A @ 240V 4A @ 120V., 2A @ 240V 6A @ 120V., 3A @ 240V 6A @ 120V., 3A @ 240V |
| 1 SPDT switches have 3 terminals: common, normally open and normally closed. SPST switches have 2 terminals: common and normally open (closes on pressure increases). Hermetically Sealed Snap Switch - UL approved only. Rated 5A @ 125/250 VAC 5A resistive @ 30 VDC. Add suffix HS after 153 circuit type. Example: PG-7000-153HS-P1. Hermetically Sealed Gold Contact Snap Switch - UL approved only. Rated 1a@ 125 VAC, 1A resistive @ 30 VDC. Add suffix HG after 153 circuit type. Example: PG-7000-153HG-P1. |
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SUGGESTED SPECIFICATIONS Differential pressure switches shall be Meroid Model PG- ___ diaphragm operated with 6" diaphragm to actuate a hermetically sealed contact (snap)(mercury)switch. Unit shall have visible setpoint dial and be adjustable with removing cover.