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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  • Series SCC - Signal Conditioner The Series SCC Signal Conditioners provide maximum accuracy with minimal cost. Built-in microprocessor digitally scales, amplifies, linearizes and isolates thermocouple, RTD, current, voltage, frequency or potentiometer analog input signals. Units offer 16-bit input resolution with 0.05% full scale accuracy. Eliminate ground loops with 1500 VAC isolation. Two LEDs, one red and one green, located on the front face of the enclosure provide visual indication of operation. Additional features include short circuit, reverse power protection, digital calibration and cold junction compensation.
    Dwyer Instruments
  • MM10 - Digital Multimeter Full Function DC and AC Voltage Our compact, low cost Model MM10 Digital Multimeter is ideal for general electrical testing and troubleshooting. This full function multimeter measures DC and AC voltage to 600V, DC current to 10A and resistance to 20 MO. In addition to volts, amps and ohms, this meter includes audible continuity, diode, LED and transistor hFE tests. Rotary switch allows you to select from any of the twenty ranges quickly and easily. The 3.5 digit LCD features automatic polarity correction, low battery and overload indication. Rugged, high impact case comes equipped with built-in tilt-stand for versatile, hands-free operation. Overload protected to 600 VAC/600 VDC for voltage ranges and to 500 VAC/500 VDC for resistance, diode and continuity test ranges. Current ranges are protected by 0.5A/250V, replaceable fuse. Multimeter is furnished with 22" test leads, 9V battery and instruction manual.
    Dwyer Instruments
  • MC6 - Multi-Cal Benchtop Calibrator Model MC6 Multi-Cal Benchtop Calibrator performs a wide variety of simple and complex pressure based measurement, test, and calibration operations. Modular sensor design allows user to select pressure measurement range for application flexibility
    Dwyer Instruments
  • DL8 - Process Data Logger This versatile, multi-channel data logger monitors and stores up to 32,768 process readings for later download to PC. Seven external input channels easily interface with common transducer and transmitter outputs. The Series DL8 Process Data Logger is ideal for monitoring temperature, relative humidity, pressure, wind speed, current, voltage and power.
    Dwyer Instruments
  • ILA - In-Line IR Sensor 10:1 Distance to Target Ratio, 32 to 932°F. Dwyer Series ILA Non-Contact Sensors, measure temperatures from 32 to 932°F (0 to 500°C) and provide a linear 4 to 20 mA, 0 to 5 VDC or thermocouple output. The 2-wire signal is compatible with almost any indicator, controller, recorder, data logger, etc., without the need for special interfacing or signal conditioning.
    Dwyer Instruments
  • CS - OEM Pressure Switch Series CS and CD combine advanced design and precision construction with small size and low price. Unit is ideal for instrument panels, small compressors and general industrial applications.
    Dwyer Instruments
  • 7000B - Spirahelic Pressure Gage Series 7000B Spirahelic Direct Drive Pressure Gages with turret mount housings feature a triple coil spiral/helical wound Bourdon tube to provide dependable service. Bourdon tube design eliminates gears, springs, linkages and complex movements which can wear and cause inaccuracy or early failure.
    Dwyer Instruments
  • APS - Adjustable Pressure Switch Miniature Series APS/AVS Adjustable Switches offer reliable switching for pressure/vacuum alarm, shutdown or control. The units are readily adjustable throughout their range using the locking adjusting ring and indicating pointer.
    Dwyer Instruments
  • 1235 - Flex-Tube Well-Type Manometer Dwyer Flex-Tube Well Type Manometers are designed to meet the need for a direct reading single column instrument providing highly accurate pressure readings; positive, negative or differential. Unlike other makes, Dwyer manometers have no hidden wells or packing glands
    Dwyer Instruments
  • AVS - OEM Pressure Switch Miniature Series APS/AVS Adjustable Switches offer reliable switching for pressure/vacuum alarm, shutdown or control. The units are readily adjustable throughout their range using the locking adjusting ring and indicating pointer.
    Dwyer Instruments
  • AP - Diaphragm Operated Pressure Switch Reliable and convenient, series AP pressure switch is a compact low cost switch for instrument air or other low pressure applications. Visible set point and external adjustment add convenience.
    Dwyer Instruments
  • A3000 - Photohelic Pressure Switch Gage Photohelic Switch/Gages function as versatile, highly repeatable pressure switches combined with a precise pressure gage employing the time-proven Magnehelic gage design. The Photohelic switch/gage measures and controls positive, negative or differential pressures of air and compatible gases
    Dwyer Instruments
  • A2 - Subminiature Pressure Switch Designed for OEM applications, the Series A2 is economical and is equipped with high proof pressure capabilities for demanding applications. The A2 is available with either spade terminals or flying leads (submersible). Switches with spade terminals can be easily adjusted in the field.
    Dwyer Instruments
  • 1222 - Flex-Tube U-Tube Manometer These inexpensive manometers measure positive, negative and differential pressures. Dwyer Flex-Tube U-Tube Manometers combine the inherent accuracy of the simple "U" Tube with the durability of tough, long-lasting plastic construction. Columns are of .375" O.D. flexible and shatter proof clear butyrate tubing.
    Dwyer Instruments
  • 1996 - OEM Gas Pressure Switch Reliable and convenient, the 1996-5 and 1996-20 Gas Pressure Switches serve as a compact, low cost switch for gas fired furnaces and equipment. Pressure ranges for both models are ideal for high or low gas pressure interlock. Visible set point and on-off indicators add convenience in servicing
    Dwyer Instruments
  • H3 - Explosion-Proof Differential Pressure Switch Explosion-proof, heavy duty, industrial unit has patented and unique new design which provides sensitivity to differential pressures as low as 10 inches of water (254 mm w.c.), yet handles total pressure of 1500 psi (103 bar). Unlike common differential pressure switches that use a piston-type motion transfer, the Series H3 utilizes a rotary motion transfer shaft that prevents a change in total pressure from causing a setpoint shift.
    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
  • 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
  • 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
  • WT-10 - Waterproof Thermometer Completely submersible, the pocket size Model WT-10 Waterproof Thermometer is designed with a waterproof housing and a 2.75" (70 mm) stainless steel stem.
    Dwyer Instruments
  • 1221 - Flex-Tube U-Tube Manometer These inexpensive manometers measure positive, negative and differential pressures. Dwyer Flex-Tube U-Tube Manometers combine the inherent accuracy of the simple "U" Tube with the durability of tough, long-lasting plastic construction. Columns are of .375" O.D. flexible and shatter proof clear butyrate tubing.
    Dwyer Instruments
  • UGB - Utility Pressure Gage The economical Series UGB Gages are ideal for air and chilled water usage typically found in refrigeration and HVAC applications. The UGB gages are enclosed in a plastic case that will not corrode or rust and contains brass wetted parts.
    Dwyer Instruments
  • HM28 - Handheld Digital Manometer The Series HM28 Digital Hand-Held Manometer is a precision instrument designed to measure a wide range of pressures to a very high accuracy. The unit incorporates a variety of features in an easy to use format that makes it useful in a wide variety of applications
    Dwyer Instruments
  • DA/DS - Bourdon Tube Operated Pressure Switch Customers tell us that this is the best pressure switch made. The Mercoid D Series is one of the world's broadest lines of pressure switches. Whatever your application might be, it is most probable it can be fully satisfied with a D Series pressure switch
    Dwyer Instruments

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