Hazardous Rated

Products rated for use in hazardous locations. Includes valves, temperature transmitters, pressure switches which are explosion-proof and compact, flow products that monitor liquid, gas, and air flows, level models where some are submersible and applications vary, and a pressure transmitter which is microprocessor-based.

Valves Valve products that have ratings for use in hazardous locations. Includes both valves and transmitters. View More

Temperature Transmitters Temperature Transmitters for hazardous temperature measurement applications. Applications include explosive process environments, offshore HVAC monitoring, and dust and grain handling. View More

Pressure Switches Dwyer pressure switches are explosion-proof, ATEX approved, weatherproof, compact and low cost. Applications include HVAC applications, process applications, all weather applications, and gas furnaces. View More

Flow Dwyer's flow products included in this category are compact and explosion-proof. They monitor liquid, gas, and air flows. Some applications are control dampers according to flow, signals alarm, shuts down burner, and protects pumps, motors, and other equipment against low or no flow. View More

Level Level products are for use in hazardous applications. The applications include water and wastewater, food and beverage, chemical processing, level control, and valve control. Some models are submersible. View More

Pressure Transmitters This category has a pressure transmitter that is a microprocessor-based high performance transmitter. Applications include water and wastewater, food and beverage, chemical and petrochemical, oil and gas. HART Communication. View More

Process Control Intrinsically safe barriers for hazardous locations are found amongst our Process Control instruments, along with hazardous rated solid state relays, hermetically sealed ice cube relays and intrinsically safe isolators. View More

Temperature Switches Temperature Switches are sensors with an electrical contact output at a specific temperature. Our Series 862E provides an explosion-proof, heavy-duty thermostat for hazardous-location temperature control. View More

Pressure Gages Pressure gages can indicate positive, negative or differential pressures and are accurate within 2%. They can also be purchased with a flame-proof ATEX enclosure. View More

Questions

QUESTIONS

Question

For which pressure switch applications are gold contacts recommended?

Answer

For "dry circuit" applications where little or no current is flowing in the circuit to help burn off contact dirt and oxidation. Switches used with solid state circuits often fall in this category.

Related

Series A7

Series H3

Series SA1100

Series H2

Series MDS

Question

Does Dwyer offer a fully UL/FM/CSA approved explosion proof pressure switch?

Answer

Yes. The 1950 and 1950G Series.

Related

Series 1950

Series 1950G

Question

Can the standard H2 pressure switch be used with water?

Answer

No. The brass or SS housing must be specified for compatibility reasons. The aluminum housing can leak into the switch.

Related

Series H2

Question

What is the key feature of both Proximity position indicators and level switches that sets these products apart from all competitors?

Answer

Magnetic coupling.

Related

Series Mark

Series PLS

Question

Hi-Flow™ control valves call out ANSI B16.104 Class IV flow leakage. What does this mean?

Answer

ANSI B16.104 is a testing specification for control valves. This specification has actually been superseded by ANSI/FCI 70-2 Class IV. The class IV designation defines the allowable amount of leakage through the valve seat in the closed position. Class IV allows for .01 percent of the rated flow (Cv), to pass through the seat. Class IV is common for metal to metal seated valves.

Related