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DA-31-2-7 | Pressure switch | brass Bourdon tube | range 5-150 psig | 6 psig min. deadband. | Dwyer Instruments

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Dwyer Instruments DA-31-2-7 Documents

DA/DS with Mercury Switch DA/DS with Snap Switch Series DA/DS Catalog Page Mercury Switch More Info

Overview

Details for DA-31-2-7

Dwyer Instruments Model DA-31-2-7 SPST Mercury Switch: Dependable Sensing for Industrial Applications The Dwyer Instruments DA-31-2-7 SPST Mercury Switch is a robust and reliable sensing device designed for various industrial applications. With its 5/150# SPST Mercury switch configuration, this device provides accurate and consistent switching of electrical circuits. It features a compact size, making it suitable for applications where space is a constraint. Crafted from high-quality materials, this switch ensures long-lasting performance and durability. The rugged construction withstands harsh industrial environments, providing reliable operation even in demanding conditions. The Dwyer Instruments DA-31-2-7 SPST Mercury Switch is an ideal choice for industrial engineers and maintenance professionals seeking a dependable and precise sensing solution. It enables precise switching of electrical circuits and offers long-term reliability in demanding environments. Our HVAC supply store is your trusted source for industrial-grade products, including the Dwyer Instruments DA-31-2-7 SPST Mercury Switch. We offer competitive pricing and fast shipping, ensuring you get the best value and timely delivery for your industrial needs. Shop now and experience the difference with Our HVAC supply store!

SERIES DA/DS BOURDON TUBE PRESSURE SWITCHES

Pressure Ranges to 8000 psi (551.6 bar)

Customers tell us that the Series DA/DS Bourdon Tube Pressure Switches are the best pressure switches made. The Mercoid DA/DS Series is one of the world’s broadest lines of pressure switches. The DA/DS Series has extremely high sensitivity and great repeatability. The DA Models are equipped with two external adjustments, one for setting high pressure operating point, the other for setting low pressure operating point. Deadband, the difference between high and low setpoints, is adjustable over the full-scale. The DS Models are equipped with a single external adjustment for setting operating point only. For mercury-free switches, choose between the snap action switch or hermetically sealed snap action switch. Hermetically sealed mercury switch also available.

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Product Applications

Compressors
Mechanical HVAC or process equipment
Pump control

Visible calibrated dial provides an easy and fast check without having to open devicecausing dangerous conditions to operators
On/off indication (except hermetically sealed snap switch models) gives operatorclear indication of state of switched equipment that could be located in anotherlocation
Adjustable or fixed deadband supports control applications by reducing equipmentwear-out by unnecessary recycling
External switch setpoint adjustments reduces set-up time
Pressure ranges of full vacuum to 8000 psig gives application designers the ability tospecify standard equipment, simplifying install and training, and reducing servicingcosts
UL listed, CSA approved many models FM approved to support rigorous processapplications and regulations
General purpose, weatherproof or explosion-proof enclosures for a variety of indooror outdoor environments meeting the needs of multiple applications and uses

Specifications

Series: DA/DS BOURDON TUBE PRESSURE SWITCHES
Category/Type: Pressure
Type: Single Pressure
Series: DA/DS BOURDON TUBE PRESSURE SWITCHES
Wetted Materials: Brass; 403 SS; or 316 SS.
Temperature Limit: 180°F (82°C).
Pressure Limit: Maximum pressure of the operating range.
Enclosure Rating: General purpose; weatherproof or explosion-proof.
Repeatability: ±1% of full operating range; ±1.5% on DS-7300 models.
Switch Type: SPST mercury switch; SPDT mercury switch; SPDT snap switch.
Electrical Rating: See Catalog page.
Electrical Connections: Screw terminal.
Conduit Connection: General purpose: 1/2" hole for conduit hub. Weatherproof: 1/2" conduit hub. Explosion-proof: 3/4" female NPT.
Process Connection: General purpose and weatherproof: 1/4" male NPT; 1/2" male NPT on range 15S and 16S. Explosion-proof: 1/2" male NPT and 1/4" female NPT.
Mounting Orientation: Vertical.
Set Point Adjustment: Thumbscrew.
Weight: General purpose: 4 lb (1.8 kg). Weatherproof: 6 lb (2.7 kg). Explosion-proof: 8 lb (3.5 kg).
Deadband: See Catalog page.
Agency Approvals: CSA; FM; UL. (Consult factory for FM approval models.)