Dwyer Differential Pressure Switch 1910 Series

Dwyer Differential Pressure Switch 1910 Series

Micro differential pressure switch

Dwyer’s universal 1910 series differential pressure switch combines advanced design and precise construction, making it suitable for applications where large-sized and expensive micro differential pressure switches can be used.

It is designed for air conditioning engineering applications and is also suitable for many applications in fluid engineering, refrigeration industry, furnaces, and drying.

Suitable for air and non combustible gases, the 1900 series switch can be set from 0.07 to 20 ˝ (1.8 to 508 mm) inches of water column.

The set point adjustment adopts rotation adjustment inside the casing. Internally installed to prevent accidental movement. UL, CE, CSA, and FM certifications.

Technical indicators:

Media: Air and non flammable, compatible with gases

Material: Please consult the manufacturer

Temperature range: -30 to 180 ° F (-34 to 82.2 ° C)

Pressure range: Continuous pressure 45 ˝ w. C. (11.2 kPa), impact pressure 10 psig (68.95 kPa)

Switch type: Single Pole Double Throw (SPDT)

Repeatability: ± 3%

Electrical indicators: 15 A @ 120-480 VAC, 60 Hz Resistive 1/8 HP @ 125VAC, 1/4 HP @ 250 VAC, 60 Hz Derate to 10 A for operation at high cycle rates

Electrical interface: 3 rotating terminals, general, normally open, normally closed

Connection: 1/8 ˝ NPT. Internal thread

Installation positioning: The diaphragm is used in the vertical direction. For other positioning, please consult the manufacturer

Set point adjustment: screw adjustment inside the casing

Weight: 1lb, 4.5 oz (581 g)

Institutional certification: CE, UL, CSA, FM

All weather housing optional: -16 gauge steel housing with gasket sealing (NEMA 4, IP66), suitable for damp or oily environments. Can withstand 200 hours of salt spray testing. Weight. 5 pounds (2.3 kilograms). The switch is installed by the factory. Change the basic model to 1911 and add the – WP suffix. For example: 1911-1-WP.

Explosion proof housing optional: – Cast iron base with brass outer layer. Riot level: Class I, Group D; Class II, Groups E, F, G. (weighing 7 pounds). The switch must be installed at the factory.

Change the basic model to 1911 and add the – EXPL suffix. For example: 1911-1-EXPL.

Manual reset model 1900-MR: – includes a special spring switch for increased pressure. When the pressure drops below the set value, it must be manually reset.

Change the basic model to 1900 and add the suffix MR. For example: 1900-10 MR. Only within the range of -1, -5, -10, or -20. No UL, CSA, or FM certificates. Note: The Manual Reset (MR) option is only applicable to single positive pressure applications.