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Dwyer Instruments' catalogue includes a wide range of pressure, flow, temperature, level and air quality measurement instruments. The brand's Magnehelic differential pressure gages provide a quick indication of air or noncorrosive gas pressures (either positive, negative or differential). They feature a rugged design to resist shocks, vibrations & overpressures and a bezel fitting to provide easy flush mounting in panels. These Dwyer differential pressure gages come with a precision litho-printed scale for easy reading and moulded rubber pointer stops to prevent over-travel. They are integrated with a silicon rubber diaphragm to support the front & rear plates and prevent damage due to overpressures. The brand's digital handheld manometers feature a single-button auto-zero function that offers easy on-site calibration and reset facilities. They further come equipped with an extruded aluminium housing to withstand temperatures up to 140 degrees F. These handheld manometers are suitable for measuring positive, negative and differential pressures with +/-0.10% full-scale accuracy.
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Powder Bulk Level Controls (12 Products) High-quality SPDT / DPDT electromechanical level switches used for level monitoring of bulk materials. Feature a NEMA 4X enclosure and NPT connections, and offered in capacitive, tuning fork and paddle variants
Flow Switches (55 Products) Brass-made flow and level switches used to monitor and control the flow of liquids, gases and steam. Have an electrical contact output at a specific flow rate
Temp./Humidity/Pressure Transmitter Acc. (9 Products) Includes display upgrade kits for use with transducers and Zener and galvanic barriers to electrically isolates certain Dwyer pressure and level transmitters. Remote displays, mounting brackets, duct mount assemblies and enclosures also available
Air Velocity Transmitters (22 Products) 641 Series transmitters suitable for monitoring the velocity of the fresh, fan (forced) and exhaust air supply in HVAC stacks, lab hood exit vents and air control dryers. Feature a heated-mass flow sensor for delivering results within 1.5 seconds. Can operate in a temperature range of -40 to 212 deg F
Micromanometers (18 Products) Designed to determine both differential and static pressure readings, and to measure flow rate and air velocity. Powered by a 9V battery and can measure up to 200 psig pressure
Manometer Accessories (7 Products) Includes digital manometer stands and other mounting accessories, such as brackets and magnet assemblies
Dial Thermometers (237 Products) Wide range of long-reach, glow-in-the-dark, side-reading, digital, clip-on, magnetic, spring- / clip-pipe mount and sanitary bimetal dial thermometers suitable for measuring temperatures in non-intrusive, tank and vessel monitoring applications. Available in NPT and sanitary connection options
Analog Panel Mount Thermometers (6 Products) BTPM Series panel mount bimetal thermometers suitable for applications in chemical processing, HVAC and automotive industries. Feature a 3 inch dial with a scratch-proof glass and a stainless-steel housing and can be easily mounted on most instrument panels. Can measure temperatures ranging from -40 to 392 degrees F
Test Instrument Carrying Cases (1 Products) Ideal for storing and protecting manometers against impact and entry of contaminants. Come with double zippers for quick and easy access and belt loops that snap close for maximum safety.
Differential Pressure Gauge Accessories (20 Products) Includes pressure fittings, static pressure tips, gland mountings, flange assemblies, wall plates, wall mounts, ceiling plates, flush mount and outside air static pressure pickups, gage portable and air filter kits, shielded cables and gauge panel mounting flanges suitable for use with differential pressure gauges
Indicating Transmitters (57 Products) Designed to provide electronic control and visual monitoring of low-differential pressure. Feature a Magnehelic gage mechanical design and Series 600 transmitter technology
Air Velocity Meters and Anemometers (7 Products) Includes anemometers, wind speed indicators and air velocity meters suitable for monitoring the airflow in HVAC systems, fume hood verification, aerodynamic testing and building automation applications. Available in handheld and pocket wind meter variants for complete portability
Differential Pressure Gauges (68 Products) Used to measure the pressure difference between two values with a maximum accuracy of +/- 4%. Feature a 4 / 4.5 inch dial to display the pressure difference in liquid and gas flow operations and weatherproof and explosion-proof construction for withstanding hazardous conditions
Window Sight Flow Indicators (24 Products) Stainless steel / bronze indicators installed in pipes or tubing to monitor the chemical processes and to detect leaks, flow interruptions and contaminants inside any equipment or system. Feature rotating impellers, Buna-N / fibre seals and removable tempered glass windows
Air Velocity Monitor Accessories (13 Products) Wide range of thermo-anemometer probes, wind meter balls, thermo-hygrometer probes, airflow grid sensors, replacement probes, USB cables, vane replacements, differential pressure anemometers, thermo-anemometer probes, wireless mobile gateways and vane thermo-anemometer probes for use with wind velocity transmitters
Duct Pressure Switches (7 Products) Explosion-proof and ATEX approved air / differential Dwyer pressure switches used for monitoring industrial cooling-air circuits and flows in ventilation ducts. Feature a silicon diaphragm and have a maximum operating pressure of 1.45 psi (10 kPa)
Digital Panel Meters (30 Products) Includes temperature, process and pressure digital panel meters suitable for monitoring and displaying the differential pressure and temperature values in walk-in coolers, refrigerators and panel process devices. Designed to accept input signals from transmitters and sensors
Pressure and/or Vacuum Transducers (64 Products) Ideal for applications requiring measurements in vacuum pressure and negative / positive pressure ranges. Can withstand pressures up to 10000 psi and come equipped with LCD display units capable of precise pressure readings
Powder Bulk Level Control Accessories (8 Products) Full / half coupling flanges featuring carbon steel / stainless steel construction and banana / L / tri paddles having minimum bulk density ranging from 5 to 70 lb per cubic foot
Signal Conditioner (2 Products) These Iso Verter Series process signal converter / isolators completely isolate the process input signals from the output or ground signals. Units are field-programmable for reverse or direct action and mount on industry-standard 35 mm DIN rails.
Digital Temperature Switches (14 Products) Used for monitoring and controlling temperature in heating and cooling applications. Can be found installed in refrigerators, chillers and food service equipment, and come equipped with thermistor-style / thermocouple sensors
Temperature Probes (49 Products) Feature a contact-style sensing method to measure temperatures ranging from -57 to 302 degrees F. Ideal for applications in medical, HVAC and food and beverage industries
Temperature and Humidity Transducers (75 Products) Designed to monitor the humidity and temperature of any environment. Ideal for use in laboratories, environmental chambers, HVAC systems and air handler applications. Available in duct, surface and wall mount variants
Pitot Tubes (58 Products) Single-point sensors designed to measure the flow velocity of liquids, gases or air running through ducts, pipes or tubing. Most of the models feature stainless steel construction and are available in different connection types and sizes
Digital Pressure and Vacuum Gauges (93 Products) Suitable for level, pump, process and compressor control applications. Feature an NPT or smooth barb connection, a 4-digit LCD screen and stainless-steel wetted parts, and come in an ABS / glass filled plastic case
Thermowells And Thermometers (8 Products) Stainless steel units that are used for separating temperature sensors & transmitters from aggressive media, high pressures and flow rates. Also, provide easy installation / removal of sensing instruments without process shutdown. Available in a maximum length of 12 inches to increase the response time.
Pressure Gauge Accessories (22 Products) Industrial-grade rubber boot designed for protecting pressure gauges against corrosion, impacts and shocks. Ideal for installation in Dwyer DPGA and DPGW pressure gauges.
Pressure and Vacuum Switches (71 Products) Designed for closing an electric contact when fluid pressure rises or falls in a system. Series 1950 features explosion-proof and weatherproof properties suitables for application in HVAC systems and gas furnaces.
Manometers (35 Products) CE-approved U-tube manometers used to measure positive, negative and differential pressures up to 100 psi. Columns have an outer diameter of 0.34 inch and feature a durable plastic construction.
Thermometers and Environmental Meters (1 Products) Used to measure humidity, temperature, air velocity, air flow and sound. Provide real-time information and feature a 4-digit LCD display to show both current and average readings
Thermocouple Wire (2 Products) Used for extending leads on existing thermocouple temperature sensors and temperature controls. Incorporates male plugs and female jacks to allow for quick and easy termination. Offers FEP insulation for low friction and chemical resistance, making it ideal for J and K type thermocouples.
Pressure and Vacuum Gauges (9 Products) Digital pressure & vacuum gauges that are suitable for monitoring absolute, static and differential pressure in liquids & gases. Include a 4-digit display for error-free reading and a keypad for easy access to features like backlight, peak & valley, tare / auto zero and conversion of pressure units.
Temperature Humidity Meters and Dew Point Meters (1 Products) Thermo-hygrometers used for measuring the percentage of relative humidity and temperature in Fahrenheit and Celsius. Identify dew point & wet bulb temperatures and display them on the LCD screen. Include a hold feature to freeze current readings (in situations where readings might fluctuate).
Hydronic Manometers (13 Products) These Series 490 manometers measure the positive differential pressure in a system, as well as tolerate various liquid media. Kits include two high-pressure rated tubing with shut-off valves, a high-pressure 3-way valve, poly tubing for purges and a rugged travel case with a strap.
Dwyer Instruments gauges' part numbers cross-reference to various Dayton & Ashcroft products. So, if you're looking for a Dwyer Instruments part that is either obsolete or out of stock, chances are we have the equivalent item available.
Dwyer Instruments units require simple packaging and are suitable for courier shipment & air freight.
Dwyer Instruments' catalogue includes a wide range of pressure, flow, temperature, level and air quality measurement instruments. The brand's Magnehelic differential pressure gages provide a quick indication of air or noncorrosive gas pressures (either positive, negative or differential). They feature a rugged design to resist shocks, vibrations & overpressures and a bezel fitting to provide easy flush mounting in panels. These Dwyer differential pressure gages come with a precision litho-printed scale for easy reading and moulded rubber pointer stops to prevent over-travel. They are integrated with a silicon rubber diaphragm to support the front & rear plates and prevent damage due to overpressures. The brand's digital handheld manometers feature a single-button auto-zero function that offers easy on-site calibration and reset facilities. They further come equipped with an extruded aluminium housing to withstand temperatures up to 140 degrees F. These handheld manometers are suitable for measuring positive, negative and differential pressures with +/-0.10% full-scale accuracy.
They provide simple, frictionless movement for quickly indicating positive, negative (vacuum) & differential air or non-corrosive gas pressures. They are shock, vibration, water & over-pressure resistant.
They detect the pressure of air and compatible gases and provide a 4 - 20mA output signal. The polycarbonate moulded housing has integral pressure connections, which saves time during installation. It is made to fit in the same diameter cutout as a standard Magnehelic gauge.
These monitors are ideal for critical low differential pressure applications requiring precise pressure monitoring. They can be configured to monitor positive or negative pressure in protected and clean areas. They allow access to pressure, security, calibration and alarm configuration.
These precision machined, direct reading flowmeters have a clear acrylic body and are suitable for both gas & liquid applications. They are available with 2 inch (51 mm) and 4 inch (102 mm) scales, as well as optional precision metering valves.
These transmitters can detect air and non-combustible gas pressures. Their polycarbonate moulded housing is integrated with pressure connection points to save time during installation. They have an easy-to-read LCD for easy pressure readings display.
These monitors are ideal for critical low-differential pressure applications requiring precise pressure monitoring. They can be configured to monitor positive or negative pressure in protected and clean areas. These units have a password-protected setup menu and visual LED alarms.
These direct reading flowmeters have a white background for easy reading and are suitable for both gas & liquid applications. Their precision-machined tapered bore enables high repeatability.
These Dwyer Instruments pressure gauges quickly indicate positive, negative (vacuum) & differential air or non-corrosive gas pressures. They are IP67-rated and resist shock, vibration, water & overpressures.
A. Yes, their front covers are sealed with O-rings. When installing indoors, the pressure connections leading downward from the gauge should be provided maximum protection from the elements.
A. The diaphragm can sag in planes other than the vertical plane, causing a shift in set-point or a change in the adjustable set-point range. Even at the smallest set-points, the switch may fail to reset. This is the same phenomenon that causes inaccuracy in Magnehelic and Capsuhelic gauges when they are not mounted vertically.
A. Yes, Dwyer Instruments products are pre-calibrated for applications like HVAC, industrial processes and laboratories to provide accurate measurement readings.
A. Dwyer Instruments offers a wide range of products for various application needs, including:
A. Dwyer carrying cases are designed to keep the valuable test instruments safe while transportation. These units are made of nylon for weather resistance and feature internal soft padding for maximum protection against shocks and impact blows.
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