Dwyer Industrial Sensors

Dwyer industrial sensors provide reliable measurement of pressure, temperature, humidity, flow, air quality, level, and other conditions in your industrial process. They are known for their accuracy and consistent performance in HVAC, process automation, manufacturing, and environmental systems. These sensors withstand harsh environments and deliver repeatable readings that operators can depend on.

Dwyer designs housings, sensing elements, and internal electronics for rugged operation, even in dusty, humid, or high-vibration areas. Engineering expertise in robust sensor platforms means their products remain stable under heavy, continuous use. Dwyer’s instrumentation maintains accuracy over time, making it a go-to for utility plants, refineries, cleanrooms, and commercial buildings where reliability reduces downtime.

Dwyer offers sensors for differential pressure, static pressure, relative humidity, CO2 concentration, air velocity, liquid level, and more. Many of their sensors output analog signals or digital communication, simplifying integration to controllers, BAS systems, or SCADA. Field-selectable ranges and flexible sensor options make them compatible with many process requirements.

Found 156 items
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Found 156 items
Manufacturer
Dwyer Instruments (156)
Component
Air Flow Switch (3)
Air Meter (1)
Carbon Dioxide Transmitter (22)
Carbon Monoxide Transmitter (20)
Communicating Carbon Dioxide Detector (4)
Communicating Carbon Dioxide Sensor (4)
Current Sensor (23)
Current Switch (15)
Current Transducer (3)
Current Transformer (1)
(Instrument-Sensor) Type
Carbon Dioxide (30)
Carbon Monoxide (20)
Nitrogen Dioxide (12)
Particulates (35)
Vocs (12)
(Instrument-Sensor) IP Protection
IP20 (12)
IP54 (9)
IP64 (24)
IP65 (21)
IP66 (19)
(Instrument-Sensor) Measurement Accuracy
1% (5)
1°C (4)
2.5% (6)
2% (28)
3% (53)
5% (25)
10 Μg/M3 (14)
10% (9)
(Instrument-Sensor) NEMA Protection
NEMA 4 (7)
NEMA 4X (26)
(Instrument-Sensor) Supply Voltage
6-35 VDC (14)
10-30 VAC (8)
10-35 VDC (12)
10-36 VDC (12)
10-42 VDC (8)
12-28 VDC (7)
15-29 VAC (12)
15-35 VDC (12)
16-28 VAC (14)
16-35 VDC (21)
(Instrument-Sensor) Temperature Range
-4 - 104°F/-20 - 40°C (6)
-4 - 122°F/-20 - 50°C (18)
-22 - 158°F/-30 - 70°C (6)
5 - 140°F/-15 - 60°C (8)
32 - 122°F/0 - 50°C (31)
32 - 158°F/0 - 70°C (5)
Ambient: -4 - 122°F/-20 - 50°C (6)
Ambient: -40 - 145°F/-40 - 63°C (7)
Operating: 32 - 122°F/0 - 50°C (14)
Process: -40 - 248°F/-40 - 120°C (7)
Normally In Stock
Dwyer MSCS-220015 Current Switch
Free U.S Ground shipping
$97.84
$81.53
Normally In Stock
Dwyer CCS-231150 Current Switch
Free U.S Ground shipping
$42.44
$35.37
Normally In Stock
Dwyer CCS-121050 Current Switch
Free U.S Ground shipping
$28.01
$23.34
Normally In Stock
Dwyer GSTA-C Carbon Monoxide Transmitter
Free U.S Ground shipping
$280.15
$233.46
Normally In Stock
Dwyer CDWP-02W-C5 Carbon Dioxide Transmitter
Free U.S Ground shipping
$602.69
$502.24
Normally In Stock
Dwyer AAFS Paddle Switch
Free U.S Ground shipping
$111.67
$93.06
Normally In Stock
Dwyer PMI-2.5DA-N-N Particulate transmitter
Free U.S Ground shipping
$387.97
$323.31
Normally In Stock
Dwyer PMI-2.5DC-N-LCD Particulate transmitter
Free U.S Ground shipping
$440.10
$366.75
Normally In Stock
Dwyer PMI-2.5DC-N-N Particulate transmitter
Free U.S Ground shipping
$383.03
$319.19
Normally In Stock
Dwyer PMI-2.5WA-N-B Particulate transmitter
Free U.S Ground shipping
$414.46
$345.38
Normally In Stock
Dwyer PMI-2.5WA-N-LCD Particulate transmitter
Free U.S Ground shipping
$387.97
$323.31
Normally In Stock
Dwyer PMI-2.5WA-N-N Particulate transmitter
Free U.S Ground shipping
$361.13
$300.94
Normally In Stock
Dwyer PMI-2.5WA-RLY-B Particulate transmitter
Free U.S Ground shipping
$431.26
$359.38
Normally In Stock
Dwyer PMI-2.5WC-N-B Particulate transmitter
Free U.S Ground shipping
$440.10
$366.75
Normally In Stock
Dwyer PMI-2.5WC-N-LCD Particulate transmitter
Free U.S Ground shipping
$378.19
$315.16
Normally In Stock
Dwyer PMI-2.5WC-N-N Particulate transmitter
Free U.S Ground shipping
$387.97
$323.31
Normally In Stock
Dwyer PMI-2.5WC-RLY-B Particulate transmitter
Free U.S Ground shipping
$459.28
$382.73
Normally In Stock
Dwyer PMI-2.5WC-RLY-LCD Particulate transmitter
Free U.S Ground shipping
$431.26
$359.38
Normally In Stock
Dwyer PMI-2.5WC-RLY-N Particulate transmitter
Free U.S Ground shipping
$405.61
$338.01
Normally In Stock
Dwyer SL-2000-P Conventional duct smoke detector
Free U.S Ground shipping
$394.15
$328.46
Normally In Stock
Dwyer SL-53546-021K Standard duct detector
Free U.S Ground shipping
$395.29
$329.41
Normally In Stock
Dwyer AVFS-1 Thermo air flow switch
Free U.S Ground shipping
$510.82
$425.68
Normally In Stock
Dwyer AVFS-2 Thermo air flow switch
Free U.S Ground shipping
$510.82
$425.68
Normally In Stock
Dwyer CDSN Carbon Dioxide/Temperature transmitter
Free U.S Ground shipping
$240.67
$200.56
Normally In Stock
Dwyer CMS300 Carbon monoxide transmitter
Free U.S Ground shipping
$242.14
$201.78
Normally In Stock
Dwyer CMS300-FC Carbon monoxide transmitter
Free U.S Ground shipping
$291.31
$242.76
Normally In Stock
Dwyer AQH-20 Air Meter
Free U.S Ground shipping
$475.16
$395.97
Normally In Stock
Dwyer PMI-2.5DA-N-LCD Particulate transmitter
Free U.S Ground shipping
$414.46
$345.38
Normally In Stock
Dwyer CDWP-05H-C1 Carbon Dioxide Transmitter
Free U.S Ground shipping
$656.02
$546.68
Normally In Stock
Dwyer CDWP-05H-C5 Carbon Dioxide Transmitter
Free U.S Ground shipping
$651.01
$542.51
Normally In Stock
Dwyer CDWP-05W-C1 Carbon Dioxide Transmitter
Free U.S Ground shipping
$627.43
$522.86
Normally In Stock
Dwyer CDWP-05W-C5 Carbon Dioxide Transmitter
Free U.S Ground shipping
$639.22
$532.68
Normally In Stock
Dwyer CDWP-10H-C1 Carbon Dioxide Transmitter
Free U.S Ground shipping
$656.02
$546.68
Normally In Stock
Dwyer CDWP-10H-C5 Carbon Dioxide Transmitter
Free U.S Ground shipping
$656.02
$546.68
Normally In Stock
Dwyer CDWP-10W-C1 Carbon Dioxide Transmitter
Free U.S Ground shipping
$639.22
$532.68
Normally In Stock
Dwyer CDWP-10W-C5 Carbon Dioxide Transmitter
Free U.S Ground shipping
$639.22
$532.68
Normally In Stock
Dwyer CDTV-2D404 Carbon Dioxide Transmitter
Free U.S Ground shipping
$568.25
$473.54
Normally In Stock
Dwyer CDTV-2D4A4 Carbon Dioxide Transmitter
Free U.S Ground shipping
$577.09
$480.91
Normally In Stock
Dwyer CDTV-2D4B4 Carbon Dioxide Transmitter
Free U.S Ground shipping
$577.09
$480.91
Normally In Stock
Dwyer CDTV-2D4D4 Carbon Dioxide Transmitter
Free U.S Ground shipping
$578.57
$482.14
Normally In Stock
Dwyer CDTV-2D4E4 Carbon Dioxide Transmitter
Free U.S Ground shipping
$578.57
$482.14
Normally In Stock
Dwyer CDTV-2D4F4 Carbon Dioxide Transmitter
Free U.S Ground shipping
$577.09
$480.91
Normally In Stock
Dwyer CDTV-2N404 Carbon Dioxide Transmitter
Free U.S Ground shipping
$513.77
$428.14
Normally In Stock
Dwyer CDTV-2N404-LCD Carbon Dioxide Transmitter
Free U.S Ground shipping
$571.52
$476.27
Normally In Stock
Dwyer CDTV-2N4A4 Carbon Dioxide Transmitter
Free U.S Ground shipping
$522.61
$435.51
Normally In Stock
Dwyer CDTV-2N4A4-LCD Carbon Dioxide Transmitter
Free U.S Ground shipping
$580.37
$483.64
Normally In Stock
Dwyer CDTV-2N4B4 Carbon Dioxide Transmitter
Free U.S Ground shipping
$522.61
$435.51
Normally In Stock
Dwyer CDTV-2N4B4-LCD Carbon Dioxide Transmitter
Free U.S Ground shipping
$580.37
$483.64

FAQs

What makes Dwyer sensors a trusted choice for industrial measurement?

Dwyer sensors are known for dependable measurement of pressure, flow, temperature, and environmental conditions. Their rugged construction and consistent accuracy make them reliable for continuous industrial operation.

How do Dwyer sensors help improve facility efficiency?

By providing precise readings needed for HVAC control, airflow balancing, process monitoring, and energy tracking, Dwyer sensors help reduce waste, optimize performance, and maintain safe working environments.

Are Dwyer industrial sensors easy to install and maintain?

Dwyer designs many of its sensors with simple wiring, clear calibration features, and compact housings that streamline installation and reduce service time for technicians.

Do Dwyer sensors work in harsh or demanding applications?

Yes, many Dwyer sensors are built with corrosion-resistant housings, stable electronics, and high temperature or pressure tolerances to operate reliably in difficult industrial conditions.

What industries commonly rely on Dwyer sensors?

Dwyer sensors are widely used in HVAC, cleanrooms, pharmaceuticals, manufacturing, energy systems, and process industries requiring stable environmental or process monitoring.

Analog and Digital Control Signals: The Basics

Digital Signals

Digital signals are represented in either a true or false. There is no gray area with digital signals. An example of this might be a light switch. A light switch is either on or off. Another example of this might be a motor that is running or not running. Digital signals can be generated with both AC and DC circuits with varying voltages, currents and resistance. Some practical examples of using digital signals in an industrial environment might be if a pump is running or not running or a whether a valve is open or closed.

Analog Signals

Analog signals convey information in the form of a range. A light switch might be on or off as a digital signal, but a dimmer switch would be an analog signal. It can be on or off, but it can also be somewhere in between. A practical example of using analog signals in an industrial environment would be if there is a need to measure the level of a tank; whether it's full, empty or somewhere in between. Analog signals can take many different forms with some of the more common being a 4 to 20 milliamp signal or a 0 to 5 or 0 to 10 volt signal. 

Communication

Communication in a device can either be sent or received. Whether that data is sent or received depends on the type of information. Is there a need to monitor the status of something? If so, an input needs to be received about that information. Is there a need to control something? If so, an output needs to be sent about what needs to occur. Receiving inputs and setting outputs are both things that can be accomplished by using both digital and analog signal types. Therefore, the signals are referred to as analog outputs (AO), analog inputs (AI), digital inputs (DI) or digital outputs (DO).