Ultra Sensitive Pressure Switches- Series PQ
Large diaphragm, magnetic mercury switch.
PHYSICAL DATA
| Temperature Limits: | -10 to 180F. (-23.3 to 82.2°C) |
|---|---|
| Pressure Connections: | 1/8" N.P.T. Female. |
| Electrical Raging: | 0.3A @ 115 VAC, 0.15A @ 230VAC, 0.9A @ 24 VAC, 0.15A @ 115VDC, 0.07A @ 230VDC |
| Conduit Opening: | ½" |
| Wiring Connections: | Two screw type |
| Circuit Type: | SPST. Model PQ-3-XX closes on increase of pressure or decrease of vacuum. For circuit to open on increase of pressure or decrease or vacuum, specify Model No. PQ-2-XX |
| Setpoint Adjustment: | Internal screw |
| Housing : | Pointed steel |
| Diaphragm: | Nylon reinforced Buna-N |
| Calibration Spring: | Plated steel |
| Weight: | 4 ½ lbs. (2.04 kg) |
| Installation: | Must be vertical |
| Model Number | Operating Range | Maximum Fixed Dead Band |
Maximum Surge Pressure |
|---|---|---|---|
| PQ-3-X1 PQ-3-X2 PQ-3-X2.6 PQ-3-X3 PQ-3-X4 PQ-3-X5 PQ-3-X6 |
0-0.1" w.c. 0.1-1.0" w.c. 0.1-6.0" w.c. 1.0-30" w.c. 0-0.1" w.c. (vac.) 0.1-1.0" w.c. (vac.) 1.0-30" w.c. (vac.) |
0-0.1" w.c. 0.02" w.c. 0.02" w.c. 0.1-0.2" w.c. 0.01" w.c. 0.01-0.02" w.c. 0.1-0.2" w.c. |
1.0" w.c. 10.0" w.c. 10.0" w.c. 60.0" w.c. 1.0" w.c. 10.0" w.c. 60.0" w.c. |
Suggested Specifications
Pressure switch shall be Mercoid Model PQ-(___) operated with Nylon reinforced Buna-N diaphragm. Units shall have fixed deadband. Diaphragm pressure element shall operate a magnetic mercury switch. Contacts shall be hermetically sealed and mercury wetted.