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Differential Pressure Switches
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The Dwyer® Series 1950G Explosion-Proof Differential Pressure Switch is weatherproof and UL listed, designed for natural gas and outdoor use, ensuring safety and reliability.
| Product Number | Measurement Pressure, Max | Supply Voltage |
|---|---|---|
|
|
1.6 inH₂O
|
24 Vdc
|
|
|
0.5 inH₂O
|
24 Vdc
|
|
|
5.5 inH₂O
|
24 Vdc
|
|
|
0.5 inH₂O
|
120 Vac
|
|
|
0.15 inH₂O
|
24 Vdc
|
The Series 1950 Explosion-Proof Differential Pressure Switch features a durable weatherproof housing, external set point adjustment, and is ideal for HVAC and process applications.
| Product Number | Measurement Pressure, Max |
|---|---|
|
|
1.6 inH₂O
|
|
|
0.5 inH₂O
|
|
|
5.5 inH₂O
|
|
|
0.15 inH₂O
|
|
|
11 inH₂O
|
The Photohelic® Switch/Gages offer precise differential pressure monitoring with easy-to-read analog displays. Compact and durable, they are suitable for various applications.
| Product Number | Measurement Pressure, Max | Switch Type |
|---|---|---|
|
|
0.5 inH₂O
|
SPDT NO/NC, Selectable
|
|
|
1 inH₂O
|
SPDT NO/NC, Selectable
|
|
|
2 inH₂O
|
SPDT NO/NC, Selectable
|
|
|
3 inH₂O
|
SPDT NO/NC, Selectable
|
|
|
5 inH₂O
|
SPDT NO/NC, Selectable
|
The Adjustable Differential Pressure Switch monitors pressure and vacuum with an easy-to-use knob. Ideal for HVAC applications, it features a compact design and durable materials.
| Product Number | Electrical Connection | Material Construction Option | Measurement Pressure, Max |
|---|---|---|---|
|
|
1/2 in NPT female Conduit with Screw Terminal block
|
UL 94 V_0 rated
|
1.6 inH₂O
|
|
|
1/2 in NPT female Conduit with Screw Terminal block
|
Standard
|
2 inH₂O
|
|
|
M20 Female Conduit with Strain Releif and Screw Terminal block
|
Standard
|
2 inH₂O
|
|
|
1/2 in NPT female Conduit with Screw Terminal block
|
Standard
|
1.6 inH₂O
|
|
|
M20 Female Conduit with Strain Releif and Screw Terminal block
|
Standard
|
1.6 inH₂O
|
Compact Low Differential Pressure Switches
| Product Number | Electrical Connection | Port/Valve Configuration | Measurement Pressure, Max | Switch Type |
|---|---|---|---|---|
|
|
7/8 in knockout with Screw Terminal block
|
Standard
|
0.15 inH₂O
|
SPDT NO/NC, Selectable
|
|
|
7/8 in knockout with Screw Terminal block
|
Standard
|
0.5 inH₂O
|
SPDT NO/NC, Selectable
|
|
|
7/8 in knockout with Screw Terminal block
|
Standard
|
1.6 inH₂O
|
SPDT NO/NC, Selectable
|
|
|
7/8 in knockout with Screw Terminal block
|
Standard
|
5.5 inH₂O
|
SPDT NO/NC, Selectable
|
|
|
Screw Terminal
|
Standard
|
0.5 inH₂O
|
SPDT NO/NC, Selectable
|
The Series BDPA Adjustable Differential Pressure Alarm features audible/visual alerts and an easy-to-use adjustment knob, ideal for HVAC and ventilation applications.
| Product Number | Measurement Pressure, Max |
|---|---|
|
|
1.6 inH₂O
|
|
|
2 inH₂O
|
|
|
4 inH₂O
|
|
|
10 inH₂O
|
|
|
20 inH₂O
|
The Digihelic® Differential Pressure Controller combines a digital gauge, control relay, and transmitter in one device, offering versatile measurements with 1.5% accuracy.
| Product Number | Measurement Pressure, Max | Measurement Pressure, Min |
|---|---|---|
|
|
1 inH₂O
|
0 inH₂O
|
|
|
0.25 inH₂O
|
0 inH₂O
|
|
|
0.5 inH₂O
|
0 inH₂O
|
|
|
2.5 inH₂O
|
0 inH₂O
|
|
|
5 inH₂O
|
0 inH₂O
|
Compact Low Differential Pressure Switches
| Product Number | Measurement Pressure, Max |
|---|---|
|
|
2 inH₂O
|
|
|
0.5 inH₂O
|
|
|
1 inH₂O
|
|
|
5 inH₂O
|
|
|
0.22 inH₂O
|
Wet/Wet Differential Pressure Switch for most gases and water based solutions. External adjustable set point, integral mounting flange and a removable electrical terminal block
| Product Number | Measurement Pressure, Max | Measurement Pressure, Min |
|---|---|---|
|
|
10 psi
|
2.5 psi
|
|
|
25 psi
|
10 psi
|
|
|
50 psi
|
25 psi
|
|
|
75 psi
|
50 psi
|
The Mini-Photohelic Differential Pressure Switch/Gage measures non-corrosive gas pressures with dual switch points and LED indicators, perfect for fume hoods and clean rooms.
| Product Number | Measurement Pressure, Max |
|---|---|
|
|
2 inH₂O
|
|
|
0.5 inH₂O
|
|
|
1 inH₂O
|
|
|
3 inH₂O
|
|
|
5 inH₂O
|
The Series DH Digihelic® Differential Pressure Controller combines a digital display, control relays, and transmitter for precise pressure, velocity, and flow measurement.
| Product Number | Measurement Pressure, Max | Measurement Pressure, Min |
|---|---|---|
|
|
0.25 inH₂O
|
0.25 inH₂O
|
|
|
1 inH₂O
|
1 inH₂O
|
|
|
5 inH₂O
|
5 inH₂O
|
|
|
10 inH₂O
|
10 inH₂O
|
|
|
25 inH₂O
|
25 inH₂O
|
The PSW-180 series are compact, differential 5 A SPDT switches with the option of a relay or alarm output. They have NEMA-4X housings to withstand harsh environments.
| Product Number | Deadband | Materials | Measurement Pressure, Max | Measurement Pressure, Min |
|---|---|---|---|---|
|
|
0 to 0.75 psi
|
Polyester, Neoprene, Polysulfone
|
10 psi
|
1 psi
|
|
|
0 to 0.75 psi
|
Polyester, Neoprene, Brass
|
10 psi
|
1 psi
|
|
|
0 to 1 psi
|
Polyester, Neoprene, Brass
|
45 psi
|
4 psi
|
The PSW-845 series are economical, compact 250 mA SPDT differential pressure switches with a fixed deadband and excellent bypass characteristics.
| Product Number | Measurement Pressure, Max |
|---|---|
|
|
13 psi
|
|
|
25 psi
|
|
|
45 psi
|
|
|
160 psi
|
|
|
250 psi
|
Miniature Adjustable Pressure Switch applies to industrial, HVAC, medical and automotive applications. Gold inlay contacts. Small and lightweight.
| Product Number | Measurement Pressure, Max |
|---|---|
|
|
0.5 inH₂O
|
|
|
2 inH₂O
|
|
|
15 inH₂O
|
|
|
60 inH₂O
|
|
|
100 inH₂O
|
Single and Dual Pressure Switch which applies to damper positioning and duct air control. Provides leak-proof construction.
| Product Number | Measurement Pressure, Max | Switch Type |
|---|---|---|
|
|
1.5 inH₂O
|
(2) SPDT
|
|
|
1.5 inH₂O
|
SPDT NO/NC, Selectable
|
|
|
6 inH₂O
|
SPDT NO/NC, Selectable
|
|
|
6 inH₂O
|
(2) SPDT
|
|
|
11 inH₂O
|
SPDT NO/NC, Selectable
|
Differential Pressure Switch for moderate shock and vibration, with a piston for any mounting orientation. It includes field adjustments and supports pressures up to 6000 psig.
| Product Number | increasing-set-point-max |
|---|---|
|
|
13 psi
|
|
|
25 psi
|
|
|
45 psi
|
|
|
160 psi
|
|
|
250 psi
|
Wireless Communications Adjustable Differential Pressure Switch used to monitor pressure, vacuum, and differential pressures.
| Product Number | Material Construction Option | Measurement Pressure, Max | Wireless Band |
|---|---|---|---|
|
|
Standard
|
20 inH₂O
|
902 MHz
|
|
|
Standard
|
1.2 inH₂O
|
902 MHz
|
|
|
Two static tips and 7 ft of PVC tubing.
|
1.6 inH₂O
|
902 MHz
|
The PSW-150 series are differential 15 A DPDT switches with a fixed deadband and UL listing for general purpose applications.
| Product Number | Measurement Pressure, Max | Measurement Pressure, Min |
|---|---|---|
|
|
6 psi
|
0 psi
|
|
|
25 psi
|
0 psi
|
|
|
70 psi
|
0 psi
|
|
|
90 psi
|
10 psi
|
Miniature Pressure Switch applies to air proving, ventilation flow, and pressure monitoring. Low Cost. Lightweight, but shock and vibration resistant.
| Product Number | Measurement Pressure, Max |
|---|---|
|
|
0.5 inH₂O
|
|
|
1 inH₂O
|
|
|
1.5 inH₂O
|
|
|
2 inH₂O
|
|
|
3 inH₂O
|
The Dwyer® Differential Pressure Switch features a floating contact design for high/low actuation, perfect for damper positioning and duct air control.
| Product Number | Measurement Pressure, Max |
|---|---|
|
|
0.02 inH₂O
|
|
|
1 inH₂O
|
|
|
4 inH₂O
|
|
|
6 inH₂O
|
|
|
12 inH₂O
|
Differential Pressure Switches
Differential Pressure Switches act when the pressure difference between two...