Need assistance? Call us: 1-800-663-4209
Series-DX
Wet/Wet Differential Pressure Switch, Brass, Weatherproof
Models In Stock
- Differential pressure switch that is suitable for most gas and water-based applications allows multiple uses in the most sophisticated designs
- Weatherproof housing provides protection in the harsh, wet or dirty environments ensuring switchs long-service life
- Removable terminal block reduces installation time
Series-DX
From
$
161.85
Models In Stock
Can't find the right model?
Use our custom configurator to fine tune your product
Product Overview
- Electrical Connection 1/2 in NPT female Conduit with Screw Terminal block
- Enclosure Ratings IP65, NEMA Type 4X
- Materials Aluminum, 300 Stainless Steel, Polycarbonate
- Materials, Wetted Brass, Fluoroelastomer
- Media Compatibility Clean process / cooling water, Potable / drinking water
- Mounting Orientation Horizontal Ports
- Operating Environment Intended for Indoor and Outdoor Use
- Operating Temperature, Max 140 °F
- Operating Temperature, Min 30 °F
- Pollution Degree 2
- Measurement Pressure Type Differential
- Process Connection Size 1/4 in
- Process Connection Type NPT Female
- Proof Pressure Up to 200 psi
- Relative Humidity 80% (Non-Condensing)
- Repeatability ± 2%
- Requires Factory Media Review true
- Series ID Series-DX
- Set Point Adjustment External Screw
- Switch Note SPDT snap switch, 5 A @ 125/250 VAC (~), 5 A res. @ 30 VDC (-)
- Switch Rating 5 A @ 125/250 Vac, 5 A @ 30 Vdc
- Switch Type SPDT NO/NC, Selectable
- Vibration and Shock Set point repeats after 2.5 Gs, 5 to 500 Hz. Set point repeats after a 15 Gs, 10 millisecond duration
- Weight 0.54 kg
Supported Applications
The Dwyer Series DX is a wet/wet differential pressure switch designed to make a contact output based on the differential between two pressure sources. The series features low differential pressure set points with high single-pressure limits, making it suitable for most gas and water-based applications where monitoring of compatible gases and liquids is required.
Operating Conditions & Performance
The Series DX operates within a process temperature range of 30 to 140°F (-1 to 60°C) with an ambient humidity limit of 80% (non-condensing). The unit maintains repeatability of ±2% of full range and is rated for continuous single-side pressure up to 1.25 times the full differential pressure range, subject to a maximum pressure rating of 200 psig (13.8 bar).
Adjustable measurement ranges are available in four increments: 2.5 to 10 psi, 10 to 25 psi, 25 to 50 psi, and 50 to 75 psi. The switch action is defined by a fixed deadband that varies with the selected range; for example, the 2.5 to 10 psid (0.17 to 0.69 bar) range lists a 1.5 psid (0.10 bar) deadband at low set points and 2.5 psid (0.17 bar) at high set points.
The device is engineered for mechanical robustness, with specifications stating that the set point repeats after exposure to 2.5 Gs vibration from 5 to 500 Hz or a shock of 15 Gs over a 10 millisecond duration. The enclosure rating is Weatherproof UL type 4X (IP65), intended for indoor and outdoor use.
Configuration Options
The Series DX offers configurable options across construction, wetted materials, process connections, circuit types, ranges, and accessories:
- Construction: Weatherproof (code W).
- Wetted Materials: Connection: Brass; Diaphragm: Fluoroelastomer.
- Process Connections: 1/4" NPT female ports, mounted on a horizontal plane with ±10° orientation tolerance.
- Circuit Options: SPDT snap switch (code 153).
- Ranges: Four selectable differential pressure ranges from 2.5 to 75 psid.
- Options and Accessories: Stainless Steel tag, Preset set point, or a watertight 1/2" conduit plug (model A-590).
The unit features an externally adjustable set point via screw adjustment. Electrical connections are made through a removable terminal block with a 0.871" diameter hole for a 1/2" conduit fitting.
Key Product Differences
Differences within the Series DX are defined by the model number structure: DX - <CONSTRUCTION> - <WETTED MATERIALS> - <PROCESS CONNECTION> - <CIRCUIT OPTIONS> - <RANGE> - <OPTIONS>. The primary variation among the stocked variants (e.g., DXW-11-153-1 through DXW-11-153-4) corresponds to the selectable differential pressure range codes 1, 2, 3, and 4. All listed variants share the same weatherproof construction code W, brass/fluoroelastomer wetted materials (code 1), 1/4" NPT process connection (code 1), and SPDT circuit option (code 153).
Compliance certifications include CE and cULus. The housing consists of an aluminum body, polycarbonate enclosure, and a 300 SS cover.
PDFs & Manuals
Accessories
A-170 316 SS Siphons for High Temp – Prevents Steam Contact – NPT Connection
From $47.75
0 In Stock
Gage Guard for Pressure/Vacuum, Polypropylene, Inorganic Compatibility
From $119.35
0 In Stock
cables
Show Ratings & Reviews
Rated 4 out of
5
by
Paola Echeverry from
CEO
good product but a little difficult to set up, also some applications require range 0-10 psi
Date published: 2025-12-05
Are there guidelines for pressure tapping points when using the DX Series Differential Pressure Switch on steel water pipes—such as whether to tap from the top, side, or bottom? Also, is there any recommended distance from pipe bends or elbows?
Hello,
There is no specific recommendation when it comes to where to tap the pipe or a distance to keep from bends or elbows. Since these measure pressure, these factors will not have a large effect on the switch's functionality.
Date published: 2025-11-17
