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:
Sustained pressure: 15 psig (1.0 bar).
Surge limit: 20 psig (1.4 bar).
Differential pressure use:
Sustained pressure, range P1: 2 psig (.14 bar).
Sustained pressure, range P2: 10 psig (0.7 bar).
|
| 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
SPDT Mercury
SPDT Mercury*
SPDT Mercury*
SPST Snap
SPST Snap
SPDT Hermetically
Sealed Silver Snap
SPDT Hermetically
Sealed Gold Snap
|
*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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