Brand

Dwyer Instruments

Dwyer Instruments covers the practical middle of process and building instrumentation: flowmeters, analog pressure gauges, dial thermometers, pressure and flow switches, controllers, air flow measurement and differential pressure devices.

Dwyer is the line most often specified for HVAC balancing, filter monitoring, duct pressure and general plant indication, where robustness and a sensible price matter more than laboratory accuracy. Selection usually comes down to three things: the range, chosen so normal operation sits mid-scale, the wetted materials against your medium, and whether you need local indication only or a transmitted signal. Tell us the medium, the line size and the output your control system expects.

Dwyer Instruments BTO31251 Bimetal Thermometer with Transmitter Output, 12" Stem, 0-250°F
The Dwyer Instruments BTO31251 combines a bimetal thermometer and transmitter in one device, reducing installation costs and saving space. Ideal for power generating boilers, skid mounted compressors, and thermal oxidation systems, this model features a 12-inch stem and a 0-250°F temperature range.
Dwyer Instruments GFM-2104 Gas Flow Meter, 0-200 SCFM, 4-20 mA Output
The Dwyer Instruments GFM-2104 gas mass flow meter offers precise measurement for a wide range of gases, featuring a 0-200 SCFM range, 4-20 mA output, and Modbus RTU communication. Its thermal dispersion technology and digital display ensure reliable performance in demanding industrial applications.
Dwyer Instruments UDL-102 Multifunction Datalogger with 0-4 Universal Inputs
The Dwyer Instruments UDL-102 is a versatile multifunction datalogger that connects to your PC via USB for easy data logging. Available with 0, 2, or 4 universal inputs, it offers flexible configuration for various industrial applications. Optional humidity sensor and LCD display enhance its functionality.
Dwyer Instruments DR4203M Glass Flowmeter, High Capacity
The Dwyer Instruments DR4203M is a high-capacity glass flowmeter from the Series DR4, featuring a direct reading scale for air or water, a fused ceramic scale with integral float guides, and a 1.5x magnification lens for accurate readings. Built for harsh industrial environments with a safety blow-out back panel.
Dwyer Instruments 43000-40CM Analog Pressure Gauge with 4-20 mA Output
Dwyer Instruments 43300-30CM Capsu-Photohelic® Switch/Gage combines a precise analog pressure gauge with two adjustable DPDT relays for low/high limit control. Designed for liquids and gases up to 300 psi, it features a rugged brass case and easy-to-set pointers. Ideal for industrial pump control and process monitoring.
Dwyer Instruments BTO32551 Bimetal Thermometer with Transmitter Output, 0-250°F, 2.5" Stem
The Dwyer Instruments BTO32551 combines a bimetal thermometer and transmitter in one device, eliminating the need for separate instruments. With a 2.5-inch stem and 0-250°F range, it’s ideal for power generating boilers, skid mounted compressors, and thermal oxidation systems.
Dwyer Instruments DLP-A10 Multifunction Data Logger with 16,000 Measurements per Channel
The Dwyer Instruments DLP-A10 is a battery-powered multifunction data logger that stores over 16,000 measurements per channel. It features easy PC start/stop and delayed start up to six months, with user-friendly DL700 software for simple data retrieval.
Dwyer Instruments 43000-40CM Analog Pressure Gauge with 4-20 mA Output
The Dwyer Instruments 43000-50CM is a rugged analog pressure gauge designed for demanding industrial applications. With a 0-5000 psi range, 1/4 NPT connection, and stainless steel construction, it offers reliable and accurate pressure measurement. Ideal for use with liquids and gases, this gauge ensures long-lasting performance in harsh environments.
Dwyer Instruments SFI-360FCS-1-1/2 Sight Flow Indicator, 1-1/2" ANSI Flange
The Dwyer Instruments SFI-360FCS-1-1/2 is a Series 360F sight flow indicator with a flapper, designed for reliable liquid flow monitoring. Featuring a 1-1/2″ ANSI flange connection, double viewing windows, and a removable window for easy maintenance, this flow indicator ensures long-lasting service in industrial applications.
Dwyer Instruments 43000-40CM Analog Pressure Gauge with 4-20 mA Output
The Dwyer Instruments 43000-0 is a digital pressure gauge offering precise 0-15 psi measurement in a rugged stainless steel case. With a 1/4 NPT connection, it provides reliable performance for industrial and laboratory applications.
Dwyer Instruments DR4203 Glass Flowmeter, High Capacity Air/Water
The Dwyer Instruments DR4203 is a high-capacity glass flowmeter with a direct reading scale for air or water. Its fused ceramic scale and 1.5x magnification lens ensure accurate readings, while the safety blow-out back panel provides added protection for industrial use.
Dwyer Instruments CAM-20 Compressed Air Meter, 0.2-44.1 SCFM
The Dwyer Instruments CAM-20 Compressed Air Meter accurately measures standard volume flow in compressed air systems using the calorimetric principle. With a programmable digital display and 1/2 NPT connection, it provides reliable, maintenance-free monitoring for industrial applications.
Scroll to Top