+371 672 70580

Mon-Fri: 9:00 - 17:00 LV

Email:

Section navigation

DWYER 1900

Photo DWYER 1900 Description DWYER 1900 Specifications DWYER 1900 Ordering DWYER 1900 Accessories for DWYER 1900 Model Chart DWYER 1900 User Manual for DWYER 1900 Related instruments to DWYER 1900

DWYER 1900 compact low differential pressure switch

DWYER 1900 compact low differential pressure switch
DWYER 1900 compact low differential pressure switch
DWYER 1900 compact low differential pressure switch
DWYER 1900 compact low differential pressure switch

Our most popular Series 1900 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, 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. UL, CE and CSA listed, and FM approved.

			int(2299)
NULL

Made in USA. brand DWYER, model 1900

Fast delivery to Latvia, Estonia and Lithuania. International delivery to Europe, Asia, Africa and other continents available on request
Our warehouse is located in Riga, Latvia.

Retailprice from $76.95

Available

Available

Founded in 1931, DWYER manufactures equipment for measurement, conversion and control – pressure, temperature, level, flow.

Advantages

Official distributor in Latvia

Time-tested American, European and Asian brands of control and measurent instruments

Advantages

Special price list for organisations

We offer a significant discount for trade organisations and manufacturing companies

Advantages

Worldwide shipping on request

We take care of all logistics and customs clearance. Fast delivery to Baltic countries

Advantages

After-sales service and support

Warranty service and repair, expert assistance in the operation of the instruments

Description of DWYER 1900

CAUTION: FOR USE ONLY WITH AIR OR COMPATIBLE GASES. 

PRODUCT APPLICATIONS

  • Air conditioning refrigeration coil icing detection; defrost cycle intiation.
  • Clogged filter detection.
  • Variable air volume controller.
  • Compact size and repeatability, provides a high-value switch for many industrial and OEM applications
  • Wide range of models from 0.07 in w.c. to 20 in w.c. can meet exacting OEM specifications for a low pressure switch
  • Range screw protected inside enclosure provides simplifies making adjustments but prevents tampering
  • 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 lbs (2.3 kg). Switch must be factory installed. Change 1910 base number to 1911 and add –WP suffix. Example: 1911-1-WP.
  • Explosion-proof Housing – Cast iron base with brass cover. Rated Class I, Group D; Class II, Groups E, F, G. (7 lbs). Switch must be factory installed. Change model number to 1911 and add –EXPL suffix. Example: 1911-1-EXPL.
  • 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. Option is not UL, CSA or FM listed. NOTE: Manual Reset (MR) option for use only in single positive pressure applications.

Technical specifications of DWYER 1900

  • Service: Air and non-combustible, compatible gases.
  • Wetted Materials: Consult factory.
  • Temperature Limits: -30 to 180°F (-34 to 82.2°C).
  • Pressure Limits: 45″ w.c. (11.2 kPa) continuous, 10 psig (68.95 kPa) surge.
  • Switch Type: Single-pole double-throw (SPDT).
  • Repeatability: ±3%.
  • Electrical Rating: 15 A @ 120-480 VAC, 60 Hz. Resistive 1/8 HP @ 125 VAC, 1/4 HP @ 250 VAC, 60 Hz. Derate to 10 A for operation at high cycle rates.
  • Electrical Connections: 3 screw type, common, normally open and normally closed.
  • Process Connections: 1/8″ female NPT.
  • Mounting Orientation: Diaphragm in vertical position. Consult factory for other position orientations.
  • Set Point Adjustment: Screw type inside conduit enclosure.
  • Weight: 1 lb 4.5 oz (581 g).
  • Compliance: CE, CSA, FM, UL. Optional EXPL Explosion-proof enclosure does not possess any agency approvals.

How to buy DWYER 1900

Model Description Price
1900-5-MR Differential pressure switch, range 1.40-5.5″ w.c., approx. deadband @ min. set point 0.30, approx. deadband @ max. set point 0.30, with manual reset option.
$121.95
1900-10-MR Differential pressure switch, range 3.0-11.75″ w.c., approx. deadband @ min. set point 0.40, approx. deadband @ max. set point 0.40, with manual reset option.
$121.95
1910-00 Differential pressure switch, range 0.07-0.15″ w.c., approx. deadband @ min. set point 0.04, approx. deadband @ max. set point 0.04.
$81.50
1910-0 Differential pressure switch, range 0.15-0.5″ w.c., approx. deadband @ min. set point 0.10, approx. deadband @ max. set point 0.10.
$76.95
1910-1 Differential pressure switch, range 0.40-1.6″ w.c., approx. deadband @ min. set point 0.15, approx. deadband @ max. set point 0.16.
$76.95
1910-5 Differential pressure switch, range 1.40-5.5″ w.c., approx. deadband @ min. set point 0.30, approx. deadband @ max. set point 0.30.
$76.95
1910-10 Differential pressure switch, range 3.0-11.75″ w.c., approx. deadband @ min. set point 0.40, approx. deadband @ max. set point 0.40.
$76.95
1910-20 Differential pressure switch, range 4.0-20.0″ w.c., approx. deadband @ min. set point 0.40, approx. deadband @ max. set point 0.50.
$76.95
1911-00 Differential pressure switch, SPDT, range .07 – .15″ w.c. less conduit enclosure.
$84.10
1911-0 Differential pressure switch, SPDT, range .15 – .5″ w.c. less conduit enclosure.
$79.55
1911-1 Differential pressure switch, SPDT, range .4 – 1.6″ w.c. less conduit enclosure.
$79.55
1911-5 Differential pressure switch, SPDT, range 1.4 – 5.5″ w.c. less conduit enclosure.
$79.55
1911-10 Differential pressure switch, SPDT, range 3 – 11″ w.c. less conduit enclosure.
$79.55
1911-20 Differential pressure switch, SPDT, range 4 – 20″ w.c. less conduit enclosure.
$79.55
1920-00 Differential pressure switch, SPDT, range .07 – .15″ w.c. with threaded back connections.
$109.30
1920-0 Differential pressure switch, SPDT, range .15-.5″ w.c. with threaded back connections.
$106.10
1920-1 Differential pressure switch, SPDT, range .4 – 1.6″ w.c. with threaded back connections.
$106.10
1920-20 Differential pressure switch, SPDT, range 4 – 20″ w.c. with threaded back connections.
$106.10
1920-10 Differential pressure switch, SPDT, range 3 – 11″ w.c. with threaded back connections.
$106.10
1921-0 Differential pressure switch, SPDT, range .15 – .5″ w.c. with threaded back connections, less conduit enclosure.
$106.10
1921-00 Differential pressure switch, SPDT, range .07-.15″ w.c. with threaded back connections, less conduit enclosure.
$109.30
1921-1 Differential pressure switch, SPDT, range .4-1.6″ w.c. with threaded back connections, less conduit enclosure.
$106.10
1920-5 Differential pressure switch, SPDT, range 1.4 – 5.5″ w.c. with threaded back connections.
$106.10
1921-5 Differential pressure switch, SPDT, range 1.4-5.5″ w.c. with threaded back connections, less conduit enclosure.
$106.10
1921-10 Differential pressure switch, SPDT, range 3-11″ w.c. with threaded back connections, less conduit enclosure.
$106.10
1921-20 Differential pressure switch, SPDT, range 4-20″ w.c. with threaded back connections, less conduit enclosure.
$106.10
Load More Items

Accessories for DWYER 1900

Model Description Price
A-302F-A 303 SS Static pressure tip with mounting flange, for 3/16″ I.D. rubber or plastic tubing. 4″ insertion depth, includes mounting screws
$12.40
A-329 1/8″ NPT close coupled street ell, brass.
$8.15
A-399 Duct pressure monitor kit, for use with standard or manual reset model switches.
$60.85
A-489 4″ 303 SS straight static pressure tip with flange, 1/4″ hose barb.
$9.50
Load More Items

Model Chart DWYER 1900

EXAMPLE 1910 00 AT Series 1910-00-AT Compact Low Differential Pressure Switch with Conduit, range 0.07-0.15″ w.c., with aluminum tag.
SERIES 1900
1910
1911
1920
1921		 Compact Low Differential Pressure Switch
Compact Low Differential Pressure Switch with Conduit
Compact Low Differential Pressure Switch without Conduit
Compact Low Differential Pressure Switch with Conduit and HP Back Port
Compact Low Differential Pressure Switch without Conduit, with HP Back Port
RANGE 00
0
1
5
10
20		 0.07-0.15″ w.c.
0.15-0.55″ w.c.
0.4-1.6″ w.c.
1.4-5.5″ w.c.
3.0-11.0″ w.c.
4.0-20.0″ w.c.
OPTIONS AT
B
BGAP
DPK
EXPL
G
LC
MIL
MR
P
PRESET
ST
VIT
WP		 Aluminum Tag
Buna-N Diaphragm & O-rings
B-Gap Micro Switch
Duct Pressure Kit
Cast Iron Explosion-proof Housing
Gold Contact Switch
Less Conduit
MIL Switch
Manual Reset
L-Bracket Mounting
Preset
Stainless Steel Tag
Fluoroelastomer Diaphragm & O-rings
Weatherproof Housing
Load More Items

User Guide and Instruction manual for DWYER 1900

You can request the necessary certificates, documentation, instructions and user guide for DWYER 1900 using the special form.

You can buy DWYER 1900 in Latvia at a price starting from76.95 $ in «OLIL SIA» by leaving a request on the website, by phone +371 672 70580 or by email . DWYER 1900 price are subject to change depending on exchange rates. We deliver instruments by transport companies in Latvia, Estonia and Lithuania. Worldwide shipping to Europe, Asia, Africa, North and South America available on request.

See also: Diaphragm Pressure Switches,  Differential Pressure Switches,  Explosion Proof Pressure Switches,  Gas & Air Pressure Switches,  Hvac Air Pressure Switches,  Low Pressure Switches,  Pressure Switches