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Công Tắc Chênh Áp Series PG
| Model | : | SERIES PG |
| Manufacturer | : | DWYER |
| Origin | : | USA |
| Wetted Materials | : | Fairprene, brass, steel, and aluminum. |
| Temperature Limits | : | -10 to 180°F (-23 to 82°C). |
| Pressure Limit | : |
Single pressure use on high side: |
| Enclosure Rating | : | General purpose. Weatherproof and explosion-proof optional. |
| Repeatability | : | ±1% of full range. |
| Switch Type | : | SPST mercury switch, SPDT mercury switch, SPDT snap switch, or SPDT hermetically sealed snap switch. Optional DPDT. |
| Electrical Rating | : | SPDT Mercury: 4A @ 120 VAC/VDC, 2A @ 240 VAC/VDC. SPST Mercury: 6A @ 120 VAC/VDC, 3A @ 240 VAC/VDC. SPDT Snap: 15A @ 120 VAC, 8A @ 240 VAC, 0.5A @ 120 VDC,m 0.25A @ 240 VDC. SPDT H.S. Silver Snap: 5A @ 125/250 VAC, 30 VDC resistive. SPDT H.S. Gold Snap: 1A @ 125 VAC, 30 VDC resistive. |
| Electrical Connections | : | Screw type. |
| Conduit Connection | : | 7/8" (22.23 mm) hole for 1/2" (12.7 mm) conduit hub. |
| Process Connection | : | 1/2" male NPT and 1/8" female NPT used for single positive pressure or high differential pressure, 1/8" female NPT used for single vacuum or low differential pressure. |
| Mounting Orientation | : | Vertical. |
| Set Point Adjustment | : | External screw. |
| Weight | : | 4.5 lb (2 kg). |
| Deadband | : | See model chart. |
| Agency Approvals | : | UL, CSA, FM for mercury switch models. UL only on snap switch models. |
| Model | Range | Maximum Deadband |
Switch Type |
| PG-153-P1 PG-153-P2 PG-3-P1 PG-3-P2 PG-7000-153-P1 PG-7000-153-P2 PG-7000-153HS-P1 PG-7000-153HG-P1 |
1-30" wc (.25-7.47 kPa) 0.5-5 psid (0.3-.345 bar) 1-30" wc (.25-7.47kPa) 0.5-5 psid (.03-.345 bar) 1-30" wc (.25-7.45 kPa) 0.5-5 psid (.03-345 bar) 1-30" wc (.25-7.47 kPa) 1-30" wc (.25-7.47 kPa) |
1.9" wc (0.47 kPa) 0.4 psid (0.38 bar) 1.3" wc (0.32 kPa) 0.3 psid (0.21 kPa) 4" wc (1.0 kPa) .5 psid (.035 bar) 4" wc (1.0 kPa) 4" wc(1.0 kPa) |
SPDT Mercury |
*SPST switches shown are close on increase of pressure. For open on increase of pressure replace 3 in middle of model number with 2. Example: PG-2-P1.
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