Dwyer 1920-10 Compact Low Differential Pressure Switch,RANGE 4.0-20.0" W.C.

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Dwyer 1920-10 Compact Low Differential Pressure Switch,RANGE 4.0-20.0" W.C. Specification

Max Pressure
25 w.c. (62 mbar)

Working Temperature
-30 to 150F (-34 to 65C)

Function
Detects and switches on/off at selected pressure differential

Mechanical Life
Over 1,000,000 cycles

Thread size
1/8 female NPT for pressure connection

Product Type
Compact Low Differential Pressure Switch

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

Max. Power
1/8 hp @ 125/250 VAC

Max. Voltage
480 VAC

Protection Class
General Purpose Snap Switch; NEMA 1 Enclosure

Pressure Range
4.0-20.0 w.c. (10-50 mbar)

Application
Monitoring and controlling air filters, fans, blowers, and duct systems

Output Signal
SPDT Snap Switch

Size
Height: 3-1/8 (79 mm), Width: 4-1/2 (114 mm), Depth: 2-1/8 (54 mm)

Color
Gray

Weight
0.8 lbs (0.36 kg)

Dwyer 1920-10 Compact Low Differential Pressure Switch,RANGE 4.0-20.0" W.C. Trade Information

Payment Terms
Cash on Delivery (COD), Cash Against Delivery (CAD), Cash in Advance (CID), Cheque, Cash Advance (CA)

Main Export Market(s)
Australia, North America, Eastern Europe, Middle East, Western Europe, Africa, Central America, South America, Asia

Main Domestic Market
All India

About Dwyer 1920-10 Compact Low Differential Pressure Switch,RANGE 4.0-20.0" W.C.

Dwyer 1920-10 Compact Low Differential Pressure Switch.

RANGE 4.0-20.0" W.C.

DESCRIPTION

Most popular SERIES 1900 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. Series 1900 switches have set points from 0.07 to 20" w.c. (1.8 to 508 mm). Set point adjustment is easy with range screw located inside conduit enclosure. Internal location helps prevent tampering.

Compact size and repeatability, provides a high-value switch for many industrial and OEM applications.

Range screw protected inside enclosure provides simplifies making adjustments but prevents tampering.

MANUFACTURER	Dwyer
PART NUMBER	1910-20
SHORT DESCRIPTION	1910-20 - SPDT Compact Low Differential Pressure Switch with Conduit, Range 4.0-20.0" 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	4.00-20.00" 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 180F
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

Precision Monitoring and Control

The Dwyer 1920-10 delivers accurate detection and switching based on low differential pressure, ensuring precise monitoring important for maintaining system efficiency. With a repeatability of 2% and a narrow deadband, it offers dependable control for critical air applications.

Robust and Durable Construction

Housed in a die-cast aluminum enclosure rated NEMA 1, this pressure switch resists typical industrial and commercial wear. Its screw terminal connections simplify wiring, while its mechanical life surpasses 1,000,000 cycles, ensuring steady, long-term performance.

Versatile Application Range

Designed for compatibility with air and non-combustible gases, the 1920-10 is suitable for HVAC, industrial, and filtration systems. Its wide pressure and temperature range enables use in various environments across India, benefiting users from system reliability and safety.

FAQs of Dwyer 1920-10 Compact Low Differential Pressure Switch,RANGE 4.0-20.0" W.C.:

Q: How is the Dwyer 1920-10 pressure switch typically installed?

A: To install the Dwyer 1920-10, mount the switch with the diaphragm in the vertical position. Connect your pressure lines to the 1/8 female NPT port, and wire the SPDT snap switch via the screw terminals as per your systems wiring diagram.

Q: What media is this pressure switch compatible with?

A: The device is designed for use with air and non-combustible, compatible gases, making it ideal for monitoring clean air and filtered gas applications such as duct systems or HVAC controls.

Q: When should the Dwyer 1920-10 be used in an application?

A: This pressure switch is best employed when precise differential pressure monitoring and control are needed, such as for safeguarding filters, monitoring blowers, and ensuring optimum HVAC performance.

Q: Where can this pressure switch be integrated?

A: It is suitable for integration in commercial and industrial air systemssuch as air handling units, ductwork, and filtration systemsacross facilities that require reliable, low-pressure switching.

Q: What is the process for adjusting the set point?

A: The set point can be adjusted within the switchs 4.0-20.0" W.C. range. Follow the manufacturers instructions, using the adjustment screw to set the desired actuation point for your specific application.

Q: What operational benefits does this pressure switch provide?

A: The Dwyer 1920-10 offers consistent set point repeatability (2% full scale), a robust mechanical life (over 1,000,000 cycles), and reliable switching, ensuring system stability, safety, and minimal maintenance downtime.

Q: How does the protection class influence its usage environment?

A: With a NEMA 1 general-purpose enclosure, the switch is intended for indoor environments where protection against dust and basic contact is sufficient. It is not designed for wet or harsh outdoor conditions.

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