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Differential Pressure Switches

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price

£0-£49.99 (3)
£50-£199.99 (5)
£200-£499.99 (4)
£500-£999.99 (4)

In Stock

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Brand

Dwyer (11)
Omega (3)
ACI (1)

Configurable

configurable

Category

Differential Pressure Switches (15)
Pressure Switches (3)

Measurement Pressure, Max

0.5 inH₂O (7)
20 inH₂O (6)
10 inH₂O (6)
1.6 inH₂O (4)
5 inH₂O (4)
2 inH₂O (4)

0.5 inH₂O (7)
20 inH₂O (6)
10 inH₂O (6)
1.6 inH₂O (4)
5 inH₂O (4)
2 inH₂O (4)
5.5 inH₂O (3)
1 inH₂O (3)
11 inH₂O (3)
100 inH₂O (3)
0.15 inH₂O (3)
125 Pa (2)
3 kPa (2)
3 inH₂O (2)
250 Pa (2)
25 psi (2)
50 inH₂O (2)
100 mmHg (2)
50 mmHg (2)
500 Pa (2)
1.2 inH₂O (1)
2 psi (1)
15 inH₂O (1)
25 inH₂O (1)
1 kPa (1)
10 mmHg (1)
45 psi (1)
15 psi (1)
6 psi (1)
10 psi (1)
25 mmHg (1)
50 psi (1)
85 inH₂O (1)
44 inH₂O (1)
30 inH₂O (1)
250 psi (1)
70 psi (1)
6 mmHg (1)
0.22 inH₂O (1)
60 Pa (1)
4 inH₂O (1)
12 inH₂O (1)
8 psi (1)
4 kPa (1)
22 inH₂O (1)
0.25 inH₂O (1)
2.5 inH₂O (1)
20 cmH2O (1)

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Media Compatibility

HVAC / room air (10)
Non-Corrosive Dry Gases (9)
Clean dry air / inert gas (9)
Helium (9)
Nitrogen (9)
Inert / non-reactive gases (9)

HVAC / room air (10)
Non-Corrosive Dry Gases (9)
Clean dry air / inert gas (9)
Helium (9)
Nitrogen (9)
Inert / non-reactive gases (9)
Methane (1)
Combustible Gases (1)
Hydrogen (1)
Consult Factory (1)
Fuel gases (1)
Propane (1)

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Measurement Pressure, Min

0.4 inH₂O (4)
3 inH₂O (4)
0.07 inH₂O (4)
4 inH₂O (4)
0.15 inH₂O (4)
1.4 inH₂O (3)

0.4 inH₂O (4)
3 inH₂O (4)
0.07 inH₂O (4)
4 inH₂O (4)
0.15 inH₂O (4)
1.4 inH₂O (3)
0 inH₂O (3)
5 inH₂O (2)
2 inH₂O (2)
4 psi (2)
-5 inH₂O (1)
3 psi (1)
35 psi (1)
25 inH₂O (1)
10 inH₂O (1)
15 psi (1)
1 psi (1)
1.5 psi (1)
0.1 inH₂O (1)
-10 inH₂O (1)
-2.5 inH₂O (1)
-0.25 inH₂O (1)
0 psi (1)
0.3 inH₂O (1)
50 inH₂O (1)
0.5 inH₂O (1)
0.8 inH₂O (1)
0.12 inH₂O (1)
9 inH₂O (1)
0.08 inH₂O (1)
100 inH₂O (1)
0.2 inH₂O (1)
0.5 psi (1)
1.5 inH₂O (1)
0.05 inH₂O (1)

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Deadband

0.4 to 0.5 inH2O (3)
0.04 to 0.05 inH2O (2)
0.1 inH2O (1)
0.4 to 0.6 inH2O (1)
0.56 to 1.1 inH2O (1)
0.15 to 0.2 inH2O (1)

0.4 to 0.5 inH2O (3)
0.04 to 0.05 inH2O (2)
0.1 inH2O (1)
0.4 to 0.6 inH2O (1)
0.56 to 1.1 inH2O (1)
0.15 to 0.2 inH2O (1)
0.18 to 0.45 inH2O (1)
0.05 inH2O (1)
0.3 inH2O (1)
0.1 to 0.12 inH2O (1)
1.2 to 3 inH2O (1)
0.3 to 0.4 inH2O (1)
0.06 to 0.11 inH2O (1)
0.4 inH2O (1)
0.3 psi (1)
0.1 to 0.15 inH2O (1)
0.15 to 0.16 inH2O (1)
1 psi (1)
0.04 to 0.06 inH2O (1)
0.14 to 0.28 inH2O (1)
0.7 psi (1)
0.04 inH2O (1)
0.08 to 0.09 inH2O (1)
0.06 to 0.09 inH2O (1)
0.06 inH2O (1)
0.35 to 0.7 inH2O (1)
0.1 to 0.4 psi (1)
0.11 to 0.29 inH2O (1)
0 to 0.75 psi (1)
0.4 to 0.9 inH2O (1)
0 to 1 psi (1)
1 to 1.5 psi (1)
1 to 1.4 inH2O (1)
0.6 to 0.8 inH2O (1)
0.9 to 1.8 inH2O (1)
0.08 inH2O (1)
0.9 psi (1)
1.3 to 3 inH2O (1)

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compliance

RoHS3 (14)
CE (11)

Switch Type

Selectable (9)
SPDT NO/NC (9)
(2) SPDT (3)
SSR (1)
SPST (1)
SPDT with Manual Reset (1)

Division

0.1 inH2O (1)
0.1 kPa (1)
5 Pa (1)
0.5 cmH2O (1)
2 Pa (1)
0.2 mmH2O (1)

0.1 inH2O (1)
0.1 kPa (1)
5 Pa (1)
0.5 cmH2O (1)
2 Pa (1)
0.2 mmH2O (1)
1 mmH2O (1)
0.05 inH2O (1)
0.02 kPa (1)
0.2 inH2O (1)
0.01 inH2O (1)
0 (1)
2 mmH2O (1)
1 inH2O (1)
0.02 inH2O (1)
10 Pa (1)
0.5 inH2O (1)
0.5 mmH2O (1)
2 inH2O (1)

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Materials

Brass (2)
Polycarbonate (2)
Bronze (1)
Polyester (1)
Polyethylene (1)
Nylon (1)

Brass (2)
Polycarbonate (2)
Bronze (1)
Polyester (1)
Polyethylene (1)
Nylon (1)
Aluminum (1)
PTFE (1)
316 Stainless Steel (1)
Polysulfone (1)
ABS (1)
Stainless Steel (1)
Polyurethane (1)
Neoprene (1)

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sku_FM

true (4)

Operating Temperature, Max

140 °F (4)
180 °F (3)
120 °F (2)
70 °C (2)
158 °F (1)
107 °C (1)

140 °F (4)
180 °F (3)
120 °F (2)
70 °C (2)
158 °F (1)
107 °C (1)
185 °F (1)
150 °F (1)

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Operating Temperature, Min

-40 °F (2)
32 °F (2)
-30 °F (2)
-4 °F (2)
20 °F (2)
0 °F (1)

-40 °F (2)
32 °F (2)
-30 °F (2)
-4 °F (2)
20 °F (2)
0 °F (1)
0 °C (1)
-40 °C (1)
40 °F (1)
-54 °C (1)

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Electrical Connection

Screw Terminal (9)
Cable (1)
M20 Female Conduit with Strain Releif and Screw Terminal block (1)
1/2 in NPT female Conduit with Screw Terminal block (1)
Sub-D Male Miniature Connector (1)
Pigtail Leads (1)

Screw Terminal (9)
Cable (1)
M20 Female Conduit with Strain Releif and Screw Terminal block (1)
1/2 in NPT female Conduit with Screw Terminal block (1)
Sub-D Male Miniature Connector (1)
Pigtail Leads (1)
7/8 in knockout with Screw Terminal block (1)

More Options Show Less

Process Connection Type

NPT Female (9)
Barbed Fitting (2)
Compression Fitting (1)
Ferrule and Nut (1)
Stem (1)

Measurement Pressure Type

Differential (14)

Process Connection Size

1/8 in (7)
1/4 in (4)
3/16 in (1)
5/16 in (1)
5/32 in (1)

Applications

Fluid Measurement and Control (3)
HVAC (2)
Filter Monitoring (1)
Pump Control (1)
Industrial and Manufacturing (1)
Environmental Monitoring (1)

Fluid Measurement and Control (3)
HVAC (2)
Filter Monitoring (1)
Pump Control (1)
Industrial and Manufacturing (1)
Environmental Monitoring (1)
Refrigeration Equipment (1)
Medical (1)
Refrigeration (1)
Flow Measurement (1)
Process Automation and Control (1)

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Proof Pressure

Up to 45 inH2O (3)
Up to 9000 psi (1)
Up to 30 psi (1)
Up to 10 psi (1)
Up to 6 psi (1)
-20 inHg to 25 psi (1)

Up to 45 inH2O (3)
Up to 9000 psi (1)
Up to 30 psi (1)
Up to 10 psi (1)
Up to 6 psi (1)
-20 inHg to 25 psi (1)
Up to 25 psi (1)
Up to 4 psi (1)
Up to 40 inH2O (1)
Up to 70 psi (1)
Up to 150 psi (1)

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Enclosure Ratings

IP54 (2)
IP66 (2)
NEMA Type 4X (2)
NEMA Type 7 (1)
IP65 (1)
NEMA Type 4 (1)

IP54 (2)
IP66 (2)
NEMA Type 4X (2)
NEMA Type 7 (1)
IP65 (1)
NEMA Type 4 (1)
NEMA Type 3 (1)
NEMA Type 13 (1)
NEMA Type 9 (1)

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Differential Pressure Switches

Grid Table

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15 Products

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Differential Pressure Switches

Differential Pressure Switches act when the pressure difference between two ports reaches a set point. Products in this category span ACI, Omega Engineering, and Dwyer Instruments metal and plastic differential switches, industrial SPDT and DPDT switches, OEM mechanical switches, air-control switches, low differential switches, floating-contact designs, and adjustable inH2O or Pa ranges.

Applications include:

Filter blockage and airflow proof alarms
Duct static pressure and damper control
Fan, blower, and equipment status interlocks
Industrial differential pressure alarm points

Choose by setpoint range, repeatability, deadband, contact rating, enclosure, media compatibility, and whether the switch is used for alarm or control.