Dwyer Instruments Inc.


Since the company was founded in 1931, customers have come to recognize Dwyer Instruments to stand for quality, reliability, and readily available low cost products. As a leading manufacturer in the controls and instrumentation industry, we continue to grow and serve major markets including, but not limited to HVAC, chemical, food, oil and gas, and pollution control. New applications are discovered daily through a cooperative effort between Dwyer and its customers. It has been these relationship ...
Phone 219/879-8000
Fax 219/872-9057
Address P.O. Box 373, 102 Indiana Hwy. 212
Michigan City , IN 46361
United States
Email lit@dwyer-inst.com
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  • DP - Double Bellows Differential Pressure Switch Two opposing bellows in the Model DP differential pressure switch result in maximum sensitivity, quick response to changes and good vibration resistance. Choice of brass or 316 stainless steel assures broad media compatibility. Setpoint adjustment is easy thanks to external knobs and large, clear scale reading directly in psid.
    Dwyer Instruments
  • 608 - Differential Pressure Transmitter The Dwyer Series 608 Differential Pressure Transmitters convert positive, negative (vacuum), or differential pressures of clean, dry air or other non-conductive, non-corrosive gases into a standard two wire, 4-20 mA output signal
    Dwyer Instruments
  • DL-8T - Data Logger + Monitor and record temperature in eight different locations with the Model DL-8T Temperature Logger. The DL-8T has a built-in sensor for local temperature monitoring and accepts seven external thermocouples in types J, K, T, S, or E.
    Dwyer Instruments
  • Series 32B - DIN Temperature/Process Controller Universal Input, Dual Temperature Output Control, RS-485 Communication
    Dwyer Instruments
  • 1620 - Single and Dual Differential Pressure Switch Our old faithful switch design is still best where highest precision combined with diaphragm sealed leak proof construction and mounting simplicity are required. Model 1626 and 1627 differential pressure switches are identical in design and construction except that Model 1626 has a single electric switch and Model 1627 has dual electric switches.
    Dwyer Instruments
  • 424 - Durablock Inclined-Vertical Manometer Dwyer No. 424 inclined-vertical manometer are extremely accurate instruments designed and made especially for precision measurement of low differential pressures in laboratory and test applications
    Dwyer Instruments
  • CS & CD - Diaphragm Pressure Switch Series CS and CD combine advanced design and precision construction in a small size. Unit is ideal for instrument panels, small compressors and general industrial applications. Visible set point and easy to wire SPDT snap switch reduce installation time. Operates in any position and is vibration resistant.
    Dwyer Instruments
  • SCS - Surface Mount Temperature Sensor The Series SCS Low Cost Current Switches are ideal for monitoring whether fans, pumps, or motors are operating. The current flowing through the core of the device powers the circuit without an external power supply. All models have a built in solid state output and are easy to install. Optional LED's and 10 Amp relay modules are available. The Series SCS is available in both Split and Solid Core configurations
    Dwyer Instruments
  • PSX2 - Portable Ultrasonic Flowmeter Detector Series PSX2 Portable Ultrasonic Flowmeter Detectors are paired with Series PUX and PUX2 converters in order to utilize the transit-time difference for measuring flow rates in pipes from the outside. It is a compact and lightweight instrument incorporating the latest electronics and digital signal processing technologies, realizing high performance and easy operation.
    Dwyer Instruments
  • 4B - Temperature/Process Controller The Series 4B 1/4 DIN Temperature/Process Controller is designed to accept thermocouple, RTD, current or voltage input and provide dual outputs for control. Available outputs include relay/relay, voltage pulse/relay, current/relay, or linear voltage/relay
    Dwyer Instruments
  • 603A - Differential Pressure Transmitter The Series 603A Differential Pressure Transmitters combine ultra low ranges, low cost, high accuracy and rugged construction - ideal for a wide range of HVAC and industrial applications. These transmitters provide a standard 4-20 mA analog output signal in ranges as low as 0.2" w.c.
    Dwyer Instruments
  • DCT1000DC - Dust Collector Timer Controller Simplify your on-demand cleaning requirements with the Series DCT1000DC Dust Collector Timer Controller. Relying on one timer board for on demand and continuous cleaning applications, the DCT1000DC eliminates external devices such as pressure switches, relays and timers.
    Dwyer Instruments
  • 682 - Weatherproof Pressure Transmitter The Series 682 Industrial Pressure Transmitter is designed to withstand environmental effects such as shock, vibration, temperature, and EMI/RFI. The electronics and capacitive sensor are packaged in a welded stainless steel housing and meets NEMA 4 (IP65) protection ratings.
    Dwyer Instruments
  • 400 - Air Velocity Meter Measure both pressure and air velocity Read the red figures directly in feet per minute of velocity - from 400 to 10,000 fpm No conversion tables needed for air at standard conditions. Read the black figures in inches of water column air pressure - from 0 to 10" w.c.
    Dwyer Instruments
  • DA-7035N - Temperature Switch Series DA-7035N Temperature Switches include the same time-proven switching mechanism used in our Series DA Pressure Switches. Bourdon tube assures high sensitivity and long life.
    Dwyer Instruments
  • UGA - Utility Pressure Gage The Series UGA Gages possess dual English/metric scales with 2.5% accuracy. The Series UGA gages are designed with brass wetted parts. Units can withstand ambient temperatures up to 140°F (60°C) and process temperatures up to 248°F (120°C).
    Dwyer Instruments
  • MP - Mini-Photohelic Differential Pressure Switch/Gage The Series MP Mini-Photohelic differential pressure switch/gage combines the time proven Minihelic II differential pressure gage with two SPDT switching setpoints. The Mini-Photohelic switch/gage is designed to measure and control positive, negative, or differential pressures consisting of non-combustible and non-corrosive gases.
    Dwyer Instruments
  • MSP - Isolating Transmitter The MSP family of analog I/O blocks offers the freedom to use any analog sensor with many models of PLC. Each MSP block provides a single analog input (or output) interface between the PLC and the analog world.
    Dwyer Instruments
  • 1213 - Gas Pressure Manometer Provide visual indication of pressure with the Series 1213 Gas Pressure Manometer. Designed for use with natural gas, the manometer can also be used to monitor any compatible gases up to 15 inches of water column
    Dwyer Instruments
  • SGI - Safety Gage The Series SGI Gages have dual English/metric scales with ±0.5% ASME Grade 2A Accuracy. The solid front design with baffle wall interposed between the sensing element and the window face, plus a pressure relieving back, provides the increased safety required for potentially dangerous applications.
    Dwyer Instruments
  • 1800 - Low Differential Pressure Switch - Essential for industrial environments, the Series 1800 combines small size and low price with 2% repeatability for enough accuracy for all but the most demanding applications. Set point adjustment inside the mounting stud permits mounting switch on one side of a wall or panel with adjustment easily accessible on the opposite side. UL and CSA listed, and FM approved.
    Dwyer Instruments
  • SA1100 - Diaphragm Operated Pressure Switch Extremely rugged construction assures excellent reliability in chemical, petroleum and industrial plants. New design also provides burst pressure protection to 3000 psi (206 bar). The rolling diaphragm design maintains a constant effective area to minimize friction.
    Dwyer Instruments
  • TSS2 - Dual Stage Temperature Switch Regulate temperatures for heating or cooling control with the Series TSS2 Dual Stage Temperature Switch. The Series TSS2 is designed to accept two inputs with independent relays output for dual stage temperature control.
    Dwyer Instruments
  • MPM - Multi Panel Meter The Series MPM has a unique, rugged, NEMA 4X front panel design that makes it nearly impenetrable in typical applications. The weatherproof, UV resistant, large, dual line display allows for more information, making it easier to read and simpler to program. The intensity of the display can be adjusted allowing this meter to be utilized in dark rooms as well as outdoors, due to its sunlight readable display.
    Dwyer Instruments

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