Pressure switch

Pressure switch

Pressure switch

Product catalog summary
Overview: The VM Series Model VM2/4 pressure switch is designed for durability and reliability in various industrial applications. It features a compact and rugged design with a stainless steel enclosure and all-welded construction to minimize leakage risks under extreme conditions. The switch is suitable for a range of pressures from 0.25 bar/4 psi to 700 bar/10,000 psi and offers a variety of wetted parts options, including NACE MR-01-75 compatibility.
Specifications:
  • Enclosure Options: Weatherproof IP66/NEMA 4X and flameproof EEx IIC 2 GD.
  • Temperature Ratings: T6 (-60°C to +65°C) and T5 (-60°C to +80°C).
  • Wetted Parts: Nickel alloy (Monel) diaphragm and process connection.
  • Electrical Ratings: Refer to Table 6 for details.
  • Process Connection: Rc 1/4 or 1/4” NPTF.
  • Weight: Approximately 1.5 kg/3.3 lbs.
  • Set Point Repeatability: +/- 1% of adjustable range.
  • Ambient Temperature Range: -40 to +80°C for ATEX (VM2) and -40 to +85°C for weatherproof version (VM2).
Applications: The VM2/4 switch is ideal for OEM manufacturers in wellhead control safety shutdown systems, fire protection systems, fuel and lubrication systems, and valve actuators. It is suitable for general-purpose applications, aggressive outdoor environments, and hazardous areas.
Installation and Safety:
  • Features a terminal strip for ease of use and internal/external grounding.
  • Mounting via integral cast lugs with holes for M5 screws.
  • CE marked for compliance with the low voltage directive (LVD) 73/23/EC.
  • Classified as 'simple apparatus' due to intrinsic safety.
Ordering Information: When ordering, specify the product code based on enclosure, model, electrical connection, material of wetted parts, process connection, range, and switching options.
Performance Data: Detailed switching differential data is provided in tables for both VM2 and VM4 models, with ranges and maximum pressures specified in both mbar and psi.
Electrical Ratings: IEC947-5-1 / EN 60947-5-1 ratings are provided, with specific VA ratings and contact codes for different operational currents and voltages.
Options and Treatments: Includes tropicalization for high humidity atmospheres and stainless steel tags.
Applicable Directives: The product complies with various directives, including ATEX and LVD, but is not covered by EMC or MSD directives. It is categorized under sound engineering practice for the Pressure Equipment Directive.
Contact Information: Delta Controls Limited, Island Farm Avenue, West Molesey, Surrey KT8 2UZ, UK. Phone: +44 (0)20 8939 3500, Email: [email protected]
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Catalog excerpts

Pressure switch-1

Designed for volume manufacture, theVM2/4 switch is ideally suited to meet therequirements of OEM manufacturers of: Enclosure options Weatherproof IP66/NEMA 4X Wellhead control safety shutdownsystems Weatherproof IP66/flameproof EEx IIC 2 GD T6 (Tamb ֖60 Deg C to + 65 Deg C) Water or gas deluge fire protectionsystems T5 (Tamb 60 Deg C to + 80 Deg C) Fuel and lubrication systems, as foundon gas turbines, compressors and other rotating machinery Wetted parts options Valve Actuators Nickel alloy (Monel) diaphragm and process connectionfor NACE MR-01-75 ֖ all welded construction. The choice of models available ensuresthe VM Series is suitable for use in: Standard electrical ratings general purpose applications Refer to Table 6 aggressive outdoor atmospheres, eg:marine or coastal environments Process connection hazardous areas Rc 1/4 (1/4 Bsp tr int) or 1/4 ԔNPTF (other sizes via adaptors only) Unit weight 1.5kg/3.3lbs approx Set point Repeatability > +/- 1% of adjustable range Delta Controls range of reliable pressureand temperature measurementinstruments can be customised to meet individual requirements. For technicaladvice or to discuss your application,please contact us on +44 (0) 20 8939 3500 Ambient temperature range -40 to +80 deg C (-40 to +176F) intermittently downto -60 deg C (-76 degF) - ATEX (VM2) -40 to +85 deg C (-40 to +185F) for theweatherproof version (VM2) -25 to +60 deg C (-13 to +140F) Limited by materials used in sensingelement (VM4 only) > TDS. V M2/4.03-05. ISSUE B

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Pressure switch-2

When ordering, please state the relevant product code for each instrument, made up as follows: Enclosure. See Table 1 Model. See Table 2 Electrical connection. See Table 3 Options. See Table 8 Material of wetted parts. See Table 4 Process connection. See Table 7 Range. See Table 5 Switching options. See Table 6 >

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Pressure switch-3

Code Stainless Steel Weatherproof IP66/NEMA 4X For general use or aggressive atmospheres e.g marineA Stainless Steel Weatherproof/Flameproof ֖ IP66/NEMA 4XATEX /EEx d IIC T6 2GD For use in aggressive atmospheres e.g. marine.R > Code Fixed Switching Differential For applications up to 100 bar / 1500 psiOver-range up to 155 bar / 2250 psiRefer to Table 5VM2 Fixed Switching Differential For applications up to 700 bar / 10,000 psiOver-range up to 1000 bar / 15,000 psiRefer to Table 5VM4 > For reduced risk against leakage under extreme or unusual conditions, thediaphragm is welded directly to the...

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Pressure switch-5

IEC947-5-1 / EN 60947-5-1 RATING UL/CSARATING Designation &Utilisation CategoryRated operational current Ie (A)at rated operational voltage VA ratin g Code UeUiUimp MakeBreakContact 5 Amps @ 110/250V AC and2 Amps @ 30V DC General Purpose PrecisionAC14 D300DC13 R3000.6/0.3A @ 120/240V AC0.22/0.1A @ 125/250V DC250V0.8kV432287228SPDTDPDT 0203 1 Amp @ 125V AC and0.1 Amp @ 30V DC Gold Alloy contacts See NoteAC14 E1500.3A @ 120VAC125V500V21636SPDTDPDT 0405 NOTE: For low energy circuits e.g. 30V and up to 100mA, we recommend using gold alloy contact switchesUi = rated insulation voltage: Uimp = rated...

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Pressure switch-6

Combinations available, applyfor details. Code Tropicalisation High humidity atmospheres01 Tag Stainless steel tied to enclosure30 > Low voltage Directive (LVD) 73/23/EC amended by 93/68/EEC. Switchproducts with enclosure code Rђ are also covered by the Explosive A tmospheres Directive ATEX-94/9/EC.The following directives do not apply to switch products manufacturedby Delta Controls:Electromagnetic Compatibility EMC 89/336/EEC.Machinery Safety Directive MSD ֖ 89/392/EEC.In the interests of development and improvement, Delta Controlsreserves the right to alter the specification of its products...

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*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.