Explosion-proof Series H3 Explosion-Proof Differential Pressure Switch, heavy duty, industrial unit has a unique new design which provides sensitivity to differential pressures as low as 10 inches of water (254 mm w.c.), yet handles total pressure of 1500 psi (103 bar). Unlike common differential pressure switches that use a piston-type motion transfer, the Series H3 utilizes a rotary motion transfer shaft that prevents a change in total pressure from causing a setpoint shift. Unit yields deadbands approximately 5% of range, with zero setpoint shift due to variation in working pressures. Friction is minimized and repeatability increased by allowing range spring to act directly on diaphragm plate. Rolling diaphragm design maintains constant effective area to further reduce friction. Diaphragm is allowed to “seat”, allowing application of full rated pressure, up to 1500 psi (103 bar), on either high or low pressure port, without damage. Special over-travel feature prevents overtightening of range adjust screw.
Made in USA. brand DWYER, model H3
International delivery to Europe, Asia and Africa.
Our warehouses are located in the UK, UAE and Senegal.
price by request
Available
Founded in 1931, DWYER manufactures equipment for measurement, conversion and control – pressure, temperature, level, flow.
Only the best I&C brands
Our company is a global supplier of control and measuring instruments from well-known world brands
Discounts for organisations
We sell high-tech equipment at very low prices. We provide really advantageous conditions for partners
Fast delivery across the Europe & Asia
We take care of all logistics and customs clearance of I&C solutions from Europe, USA, China and India
Professional advice on device selection
Our specialists are ready to advise you on any technical question. We can find an analogue of any device
PRODUCT APPLICATIONS
| Model | Description | Price |
|---|---|---|
| A-610 | Pipe mounting kit for 1-1/4″ to 2″ pipe. 5.6″ x 4.6″ x 1.4″, 1.0 .lb (Magnehelic® sold separately) |
$36.65
|
| XAMPLE | H3 | A | 1 | S | C | MV | Series H3A-1SC-MV Explosion-proof, Weatherproof Differential Pressure Switch, aluminum chamber, nitrile diaphragm, range 10-180″ w.c., SPDT snap switch, terminal block, ATEX approved, with gold contacts on snap switch. |
| SERIES | H3 | Explosion-proof, Weatherproof Differential Pressure Switch | |||||
| CHAMBER/DIAPHRAGM MATERIAL |
A S |
Aluminum Chamber and Nitrile Diaphragm Stainless Steel Chamber and Fluoroelastomer Diaphragm |
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| ADJUSTABLE RANGE |
1 2 3 4 |
10-180″ w.c. (2.48-44.78 kPa) 0.5-15 psid (0.03-1 bar) 5-70 psid (0.34-4.8 bar) 10-200 psid (0.7-13.8 bar) |
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| SWITCH | S D |
SPDT Snap Switch, Rated 5 A @ 120/250 VAC, 30 VDC DPDT Snap Switch, Rated 5 A @ 120/250 VAC, 30 VDC |
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| ELECTRICAL CONNECTIONS |
C L T |
ATEX Approved Internal Terminal Block 18 AWG x 18″ Lead Wires UL/CSA Approved Internal Terminal Block |
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| OPTIONS | DRAIN MV PRESET ST VIT |
Housing with Drain, allows condensate to be drained, (NEMA 3 instead of 4X) Gold Contacts on Snap Switch for Dry Circuits Preset Stainless Steel Tag Fluoroelastomer Diaphragm (standard with stainless steel chamber) |
You can request the necessary certificates, documentation, instructions and user manuals for DWYER H3 using the special form.
You can buy DWYER H3 in UK or Europe at a favourable price in «DOLCHETRADE» by leaving a request on the website, by phone +441225535040 or by email dolce@dolcetrade.com. DWYER H3 price are subject to change depending on exchange rates. We deliver instruments by transport companies in the United Kingdom and Europe.
