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Series-1900
Compact Low Differential Pressure Switch, 0.07-20 inH2O, UL/CE/CSA/FM
Interrupteur de pression différentielle basse compact, 0,07-20 inH2O, UL/CE/CSA/FM
Models In Stock
- 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
Series-1900
From
C$
133.79
Models In Stock
Product Overview
- Applications Refrigeration, Refrigeration Equipment
- Compliance Note CE, CSA, FM, and UL. Optional-EXPL explosion-proof enclosure does not possess any compliance.
- Materials, Wetted Consult Factory
- Media Compatibility Clean dry air / inert gas, HVAC / room air, Inert / non-reactive gases, Helium, Nitrogen, Non-Corrosive Dry Gases
- Mounting Orientation Vertical Diaphragm
- Operating Temperature, Max 180 °F
- Operating Temperature, Min -30 °F
- Measurement Pressure Type Differential
- Process Connection Size 1/8 in
- Process Connection Type NPT Female
- Proof Pressure Up to 45 inH2O
- Repeatability ± 3%.
- Series ID Series-1900
- Set Point Adjustment Internal Screw
- Switch Note 15 A @ 120-480 VAC, 60 Hz. Resistive 1/8 HP @125 VAC, 1/4 HP @ 250 VAC, 60 Hz. De-rate to 10 A for operation at high cycle rates
- Switch Rating 15 A @ 120-480 Vac, 1/8 HP @ 125 Vac, 1/4 HP @ 250 Vac
- Weight 581 g
Notre commutateur compact à faible pression différentielle série 1900, le plus populaire, combine une conception avancée et une fabrication de précision pour permettre à ces commutateurs d'effectuer de nombreuses tâches habituellement réservées à des appareils plus grands et plus coûteux. Conçus pour la climatisation, ils sont également utilisés dans de nombreuses applications fluidiques, de réfrigération, de fours et de séchoirs. Pour l'air et les gaz non combustibles compatibles, les pressostats de la série 1900 ont des points de consigne compris entre 0,07 et 20 pouces de colonne d'eau (1,8 à 508 mm). Le réglage du point de consigne est facile grâce à la vis de réglage située à l'intérieur du boîtier du conduit. Son emplacement interne permet d'éviter toute manipulation frauduleuse. Homologués UL, CE et CSA, et approuvés FM.
ATTENTION : À UTILISER UNIQUEMENT AVEC DE L'AIR OU DES GAZ COMPATIBLES.
Veuillez consulter la série AT-1900 pour les produits certifiés ATEX.
Résidents de Californie : Cliquez ici pour consulter l'AVERTISSEMENT relatif à la Proposition 65.
Applications du produit
- Détection du givrage des serpentins de réfrigération des climatiseurs ; déclenchement du cycle de dégivrage.
- Détection de filtre bouché.
- Contrôleur de débit d'air variable.
PDFs & Manuals
Accessories
accessories
303 SS Static pressure tip with mounting flange, for 3/16" I.D. rubber or plastic tubing. 4" insertion depth, includes mounting screws
C$19.21 / each
7683 In Stock
4" 303 SS straight static pressure tip with flange, 1/4" hose barb.
C$15.18 / each
7297 In Stock
installation hardware
Show Ratings & Reviews
Rated 5 out of
5
by
Johnnyuc from
great switch
Works great in our paint department, will buy more Dryer products.
Date published: 2025-12-30
Rated 5 out of
5
by
Jacob 159 from
Works as promised
A widely used switch known for its high precision, dependable performance, and cost-effectiveness
Date published: 2025-10-13
Rated 5 out of
5
by
StephanieM from
Reliable and Accurate Pressure Switch
I’ve been very pleased with this differential pressure switch. The 3.0–11.75" w.c. range is accurate, stable, and performs exactly as advertised. Installation was simple, and it has been reliable in day‑to‑day operation. Overall, a solid, dependable component that does its job well.
Date published: 2026-04-13
Rated 5 out of
5
by
CKail14 from
Great product!
We placed an order for these and there was an issue with the adhesive used in making these so there was an extended lead time. Generally, we never have issues with Dwyer- this was the first time, so it did put us a little behind, but once we got them-we were good to go!
Date published: 2025-10-08
RoHS 2015/863 - View Certificate
CE Approved
UL Listed
CSA
FM