Setpoints from 10" w.c. to 200 psid – Rated 1500 psig, Weatherproof. Explosion-proof Series H3 Explosion-Proof Differential Pressure Switch, heavy duty, industrial unit has a unique new

Manual Reset Model 1900-MR - includes special snap switch which latches on pressure increase above the setpoint. Switch must be manually reset after pressure drops below the setpoint. To order change base model to 1900 and add MR suffix after range number. Example: 1900-10-MR. Available on -1, -5, -10 or -20 ranges only.

A normally open type manual reset switch such as Dwyer®Instruments, Inc. Part No. A-601 is connected to the terminals in Sections B and C. The circuit must be “armed by momentarily

Series PG Gas Pressure/Differential Pressure Switch External Adjustment, Visible Dial, Hermetically Sealed Snap or Mercury Switch. Large sensitive diaphragm and reliable, time proven mechanical design are combined in Series PG Gas Pressure/Differential Pressure Switches.For use with air and other compatible gases, they feature excellent ±1% of full scale

The 1950G is very compact, about half the weight and bulk of equivalent conventional explosion-proof switches. Easy access to the SPDT relay and power supply terminals is provided by removing the top plate of the aluminum housing. A supply voltage of 24 VDC, 120 or 240 VAC is required.

Series 1950 Explosion-Proof Differential Pressure Switches com - bine the best features of the Series 1900 Pressure Switch with an inte - gral explosion-proof and weather-proof housing.

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. This results in a minimum deadband as low as 5% of full scale.

The Series DHC Digihelic® Differential Pressure Controller is a 3-in-1 instrument possessing a digital display gage, control relay switches, and a transmitter with both current and voltage outputs. Combining these 3 features allows the reduction of several instruments with one product, saving inventory, installation time, and cost.

Pressure ranges from 0.07 in w.c. to 85 in w.c. make this switch suitable for a wide range of applications Options Weatherproof Housing - 16-ga. steel enclosure with gasketed cover (NEMA 4, IP66) for wet or oily conditions. Withstands 200 hour salt spray test. Wt. 5-1/2 lbs. (2.5 kg). Switch must be factory installed.

Dwyer 1831-1-RA-S - Low Differential Pressure Switch, DPDT, Manual Reset (2.5" - 9.0" W.C.) - Low Differential Pressure Switch, DPDT, Manual Reset (2.5" 

of the popular Series 1900 Pressure Switch with a compact explosion- Connect switch to source of pressure, vacuum or differential pressure.

The Series 1950 Explosion-Proof Differential Pressure Switch combines the best features of the popular Dwyer® Series 1900 Pressure. Switch with an integral 

Suitable for air and many other non-combustible gasses. Compact and low cost design; Simple design, volt free contact design; Optional manual reset and gold 

The Dwyer 1900-5-MR Compact Low Differential Pressure Switch combines advanced design and precision construction to make these switches able to perform many of the tasks of larger, costlier units. Designed for air conditioning service, they also serve many fluidics, refrigeration, oven and dryer applications.

Set point adjustment on the switch is easily accessible for modifying the set point. A mounting bracket is included for simplified installation. MANUAL RESET 

In this cooling application, the Dwyer differential pressure switch senses the increasing restriction to air flow caused by icing and actuates the defrost cycle. Two static tips are installed to sense the differential pressure across the cooling coils. Pressure switch monitors flow in high pressure system.

The Series ADPS Adjustable Differential Pressure Switch is designed for overpressure, vacuum, and differential pressure applications. The scaled adjustment 

The compact size, adjustment knob and low cost make the Dwyer ADPS switch the perfect choice for HVAC applications. For a metal clad, more industrial design 

Dwyer Instruments - 1638-1 - Diaphragm pressure switch, 0.20-1.0" w.c., SPDT, 15A, 120-480 VAC, 1/8" NPT - Allied Electronics & Automation, part of RS Group, Pneumatics & Fluid Control / Instrumentation / Pressure / Vacuum Switches, Image may be a representation. See specs for product details. Dwyer Instruments, Dwyer Instruments 1638-1,

Dwyer 1900-5-MR Compact Low Differential Pressure Switch, Manual Reset, Range 1.4 - 5.5" W.C. The Dwyer 1900-5-MR Compact Low Differential Pressure Switch 

Series 1950 Explosion-Proof Differential Pressure Switch combines the best features of the popular Dwyer® Series 1900 Pressure Switch with an integral explosion-proof and