Technical Datasheet Performance Bourdon Operated Pressure Switches 230 Series • Precision stainless steel mechanism for arduous atmospheres and high humidity. • Ranges available up to 600 bar (8500 psi). • Weatherproof and Flameproof models EEx d IIC - ATEX. • Models for fixed switching differential, adjustable differential and HI-LO operation • Safety vented design as standard. • Hermetically sealed microswitch option. Performance characteristics Enclosure • IP66 Protection Product applications Wetted parts options • Bourdon tube and process connection 316 Stainless Steel welded fabrication. • Nickel Alloy (Monel) bourdon tube and connection suitable for NACE MR-01-75. The 230 is suitable for a wide range of applications in many Industry sectors: • Oil & Gas • Chemical • Petrochemical Standard Electrical ratings – Refer to Table 6 • 5 Amps – General purpose, environmentally sealed and hermetically sealed. • Power • Food Industry • 1 Amp with gold contacts. The choice of models available ensures Process connection • Rc ¼ (BSP), ¼ NPT Internal, ½ NPT Internal & ½ NPT External . that the 230 is suitable for use in: • Corrosive atmospheres • Resistant to chemical attack Unit weight Delta Controls’ range of reliable Accuracy • Set point repeatability ± 1% of span at 20 ° / 68 ° F ambient. C • Scale accuracy ± 3% of full scale. pressure and temperature measurement instruments can be customised to meet individual requirements. For technical advice or to discuss your application please contact us on +44 (0)

Enclosure FINISH All enclosures except Type A are finished in light grey epoxy resin paint. Special finishes to order. INTRINSIC SAFETY Because of the low voltages and currency of I.S. circuits, we recommend using gold and/or sealed contacts. Temperatures in Table 1 refer to limitations for certified enclosures. See TECHNICAL DATA. WEATHERPROOF ENCLOSURES General Purpose The basic enclosure is pressure die-cast in zinc alloy, offering weather protection not less than NEMA 4 + 13/IP66. For Aggressive Atmospheres Investment cast enclosure in austenitic stainless steel with weather protection not...

Electrical Entry Adaptors are available for other popular thread sizes. Enclosures ‘W’ and ‘N’ Standard option code 1(22mm dia) is provided with a nylon 22/20 reducer and fibre washer suitable for a standard M20 cable gland and back nut. Option code 0 elbow adapter is factory fitted. Adapter kits may also be provided retrospectively to fit at site if required. Ask for details. Enclosure W & N: Clearance for 20mm (3/4) in outside dia conduit. Enclosures H & K: M20 x 1.5 ISO thread, dual entry. Enclosures H & K: 3/4-NPT INT. dual entry ‘W’ and ‘N’ SAFETY NOTE If a metal cable gland is site fitted...

Switching Options A much wider variety of switching options can be engineered to customers’ special requirements for models 231 and 234 pressure switches, including heavy DC, manual latching, pneumatic output etc. Please consult our engineers for further information. On models 232 and 233, only the switching options specified can be supplied. Model 231 IEC 947-5-1/EN 60947-5-1 Rating UL/CSA Rating (RESISTIVE) §SEE NOTE 5 Amps @ 110/250V AC Light Duty for AC only Designation & Utilization Category Rated operational current Ie (A) at rated operational voltage Ue VA Rating Make Break Ui 5 Amps @...

Process Connection Other thread specifications and sizes are available without using adaptors. Adaptors are available for applications where their use is permitted. Code Tropicalisation High humidity environment Marine and Offshore Saline atmosphere or salt spray Ammonia Process (wetted) parts and construction suitable for atmospheric ammonia. Oxygen Service 2: Process (wetted) parts are cleaned for oxygen. Oxygen Service3: Process and non-process parts are cleaned for use with oxygen. Stainless Steel Pipe Mounting Bracket Permits local 2” pipe work to be utilised for mounting the instrument....

Performance Data TABLE 10 Bar Units (SI) GAP= The difference between rising (HI) and falling (LO) in mbar. Due to manufacturing tolerances, the figures quotes in these tables are for guidance only. Should the differential be critical for specific applications, our engineers should be consulted prior to ordering.

Technical Specifications ACCURACY ELECTRICAL CONNECTIONS Set point repeatability + 1% of full scale Terminal Block at 20°C ambient. Cable entry is to a non-pinching block Scale accuracy +3% of full scale. made of a non-hygroscopic thermosetting plastic, suitable for AMBIENT TEMPERATURE RANGE 2 cables up to 2.5mm /14AWG. All models are suitable for operating within a range of ambient temperature Earthing/Grounding from –25 to +60°C (-13 to +140°F). Special build available for temperatures An earthing stud is provided inside all weatherproof enclosures, adjacent to down to -60°C (-76°F) the entry....

Delta Controls Limited Riverside Business Park, Dogflud Way, Farnham, Surrey GU9 7SS, UK.