Dwyer 1910-0 Compact Low Differential Pressure Switch, Range 0.15 - 0.55" W.C.

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Dwyer 1910-0 Compact Low Differential Pressure Switch, Range 0.15 - 0.55" W.C. Specification

Mechanical Life
Over 1 million cycles

Working Temperature
-30F to 180F (-34C to 82C)

Function
Senses positive, negative, or differential air and non-corrosive gas pressures

Max Pressure
20 w.c. (4,982 Pa)

Thread size
1/8 NPT Female connections

Product Type
Compact Low Differential Pressure Switch

Max. Current
15 A @ 125/250/480 VAC

Max. Power
1/8 HP

Max. Voltage
250 VAC

Protection Class
NEMA 1 (IP00)

Pressure Range
0.15 to 0.55 w.c. (37 to 137 Pa)

Application
HVAC, filter monitoring, fan control, duct pressure monitoring

Output Signal
SPDT Snap Switch

Size
4 diameter x 2-3/8 depth (101.6 mm x 60.3 mm)

Color
Gray

Weight
0.8 lb (0.36 kg)

About Dwyer 1910-0 Compact Low Differential Pressure Switch, Range 0.15 - 0.55" W.C.

Dwyer 1910-0 Compact Low Differential Pressure Switch

Range 0.15 - 0.55" W.C.

The Dwyer 1910-0 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. For air and non-combustible compatible gases, 19100 switches have set points from 0.15 - 0.55" w.c.. Set point adjustment is easy with range screw located inside conduit enclosure. Internal location helps prevent tampering. UL, CE and CSA listed, and FM approved.

Range: 0.15 - 0.55" W.C.
Flame-proof ATEX enclosure protects the device in hazardous areas
Compact size and repeatability, provides a high-value switch for many industrial and OEM applications
Range screw protected inside switch enclosure prevents tampering
No power to operate DPDT switch means no additional wiring or conduit reduces material and installation labor costs
Easy access for modifying set point simplifies adjustment
Both control contacts activate at the same time eliminating system issues where lead switch activities preventing the lagging switch from sending a signal

MANUFACTURER	Dwyer
PART NUMBER	1910-0
SHORT DESCRIPTION	1910-0 - SPDT Compact Low Differential Pressure Switch with Conduit, Range 0.15-0.5" w.c., 1/8" FNPT, Conduit Enclosure
PRODUCT SERIES	1900 Series
NOMINAL OR PRIMARY VOLTAGE	120-277 VAC
AMPERAGE RATING	15A
SET POINT/SET POINT RANGE	0.15-0.5" w.c.
INPUT(S)	Resistive 1/8 HP at 125 VAC, 1/4 HP at 250 VAC
CONTACT	SPDT
CONNECTION	Process Connection: 1/8" FNPT; Electrical Connection: 3 Screw Type, Common, Normally Open and Normally Closed
PRESSURE RANGE	45" w.c. (11.2 kPa) Continuous; 10 psig (68.95 kPa) Surge
MAX TEMPERATURE	-30 to 180°F
FREQUENCY	60 Hz
APPLICATIONS	For Air Conditioning Refrigeration Coil Icing Detection, Defrost Cycle Intiation, Clogged Filter Detection, Variable Air Volume Controller, Air and Non-Combustible, Compatible Gases
STANDARDS/APPROVALS	CE Approved, CSA, FM, UL, RoHS Complaint
ADDITIONAL PRODUCTS OR REQUIREMENTS	A-399, A-329, A-489, A-302F-A

Precise Differential Pressure Sensing

The Dwyer 1910-0 is designed for accurate sensing of low differential pressures ranging from 0.15 to 0.55 inches of water column, making it ideal for monitoring air flow and ensuring optimal performance in critical HVAC and filtration systems. Each unit is tested for repeatability and long mechanical life, delivering consistent and dependable feedback.

Durable Construction for Demanding Conditions

Featuring a robust die-cast aluminum base and a clear polycarbonate cover, the Dwyer 1910-0 offers excellent durability and visual inspection capability. Its NEMA 1-rated enclosure ensures basic protection for indoor installations, while its working temperature range makes it suitable for a wide variety of environments.

Easy Installation and Adjustment

Designed with convenience in mind, the switch incorporates an external set point adjustment screw and screw terminal electrical connections. This allows for quick setup and calibration, reducing downtime during installation or maintenance.

FAQs of Dwyer 1910-0 Compact Low Differential Pressure Switch, Range 0.15 - 0.55" W.C.:

Q: How do I adjust the set point for the Dwyer 1910-0 pressure switch?

A: The set point can be easily adjusted using the external screw located on the pressure switch, allowing you to set the switching pressure precisely within the 0.15 to 0.55" W.C. range without opening the enclosure.

Q: What types of media are compatible with this pressure switch?

A: This model is compatible with air and non-combustible, compatible gases, making it ideal for a variety of HVAC and cleanroom applications.

Q: When should I use the Dwyer 1910-0 pressure switch in my system?

A: Use the Dwyer 1910-0 for applications that require accurate monitoring of low differential pressure, such as HVAC filter monitoring, fan control, and duct pressure regulation, especially where reliable operation and repeatability are important.

Q: Where can the pressure switch be mounted?

A: The unit should be mounted with the diaphragm in a vertical position to ensure proper operation and to maintain its specified accuracy and repeatability.

Q: What is the process for electrical connection and installation?

A: Electrical connections are made via screw terminals inside the enclosure. The switch is designed for easy mounting, featuring a compact size and accessible connection points for rapid deployment in control panels or on ductwork.

Q: What are the benefits of using this pressure switch in HVAC applications?

A: It provides reliable switching with excellent repeatability (0.02" W.C.), supports mechanical life over one million cycles, and is designed for quick installation and easy maintenance, contributing to reduced operational downtime and accurate system monitoring.

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