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Home | | Dwyer Switches- Series 1831 | |
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Series 1831 DPDT Low Differential Pressure Switches
Manual Reset, No Power Required
One of our most popular differential pressure switches is now
available with a DPDT switch and manual reset. The 1831 combines small
size with 4% set point repeatability. Absolutely no power is required to
operate the DPDT switch. Set point adjustment on the switch is easily
accessible for modifying the set point.
The Series 1831 DPDT Low Differential Pressure Switches with Manual
Reset eliminate common problems associated with typical high duct static
cutout installations. Since the 1831 requires absolutely no power to
drive its outputs, a separate power loop and its associated additional
wiring and conduit is alleviated, reducing material and labor
installation costs. Both control contacts of the Series 1831 activate at
the same time. The potential of the lead switch shutting down the fan
preventing the lag switch from sending an alarming signal to the DDC is
no longer a probable system liability. Potential costly maintenance
calls are diminished. Unlike typical switches that posses only a single
conduit entry for both control loops, the Series 1831 provides two
conduit connections simplifying wiring while eliminating additional
conduit tees. The Series 1831's specifications and features make it the
superior choice for high duct static cutout applications.
Series 1831 DPDT Low Differential Pressure Switch
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Series 1831 DPDT Low Differential Pressure Switch, Back view
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Series 1831 DPDT Low Differential Pressure Switch, Back view with cap off |
Series 1831 DPDT Low Differential Pressure Switch, Front view - Animated switch
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Series 1831 DPDT Low Differential Pressure Switch, Internal view
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Specifications
- Service:
- Air and non-combustible, compatible gases.
- Wetted Materials:
- Consult factory.
- Temperature Limits:
- -30 to 180°F (-34 to 82.2°C).
- Pressure Limits:
- 10 psig (68.95 kPa) continuous, 25 psig (172.4 kPa) surge.
- Switch Type:
- 2 SPDT.
- Actuation Time Difference:
- 1 millisecond maximum actuation delay between contacts.
- Repeatability:
- ±4% max.
- Electrical Rating:
- 4A @ 125/250 VAC.
- Electrical Connections:
- Screw type terminal block.
- Process Connections:
- 1/8" female NPT.
- Mounting Orientation:
- Diaphragm in vertical position. Consult factory for other position orientations.
- Set Point Adjustment:
- Screw type inside mounting spud.
- Weight:
- 1 lb 2 oz (522 g).
Models & Ordering
Model Number |
Description |
1831-1-RA-S |
Differential pressure switch, manual reset, DPDT, activate on increase, silicone diaphragm, range 2.5-9" w.c. |
1831-2-RA-S |
Differential pressure switch, manual reset, DPDT, activate on increase, silicone diaphragm, range 7.5-23" w.c. |
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Ancor Sdn Bhd
D-2-4, Setiawalk, Pusat Bandar Puchong, 47160 Puchong, Selangor, Malaysia
Tel: +6012-921 3877; +6018-623 5135,
Fax: 6018-635 1593
Email: info@ancor.com.my ; ancor.my@gmail.com
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