GR Series
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Technical Datasheet Compact Diaphragm Operated Pressure Difference Switches GR Series • Compact and rugged design. • Hermetically sealed snap switch UL and CSA listed. • ATEX - Flameproof CENELEC EEx d IIC option. • ATEX – Intrinsically Safe ATEX Ex ia IIC option. • Weatherproof IP66/NEMA 4. • Stainless steel body option NEMA 4X rating. • Maximum Working (Static or line) Pressure up to 250 Bar / 3500 psi. • Ranges available up to 10 bar / 160 psi. • Variety of wetted parts including NACE MR 01-75 compatibility option. • Optional weatherproof, ATEX EEx e, ATEX Ex ia or ATEX - Flameproof EEx d IIC terminal enclosures. • Field adjustable. • Accuracy 1% Performance characteristics Enclosure options • IP66 Protection Nema 4 (Standard) • Option Nema 4X. Wetted parts options • 316 Stainless Steel (with PTFE & Viton or Nitrile O-ring seals) • Sour Gas or Sour Crude applications (MR 01-75) – NACE. Product applications The GR series is suitable for a wide range of applications in many Industry sectors: • Oil & Gas • Chemical • Petrochemical • OEM The choice of models available ensures that the GR Series is suitable for use in: • Corrosive atmospheres • Resistant to chemical attack • Nitrile with aluminium or cast iron flanges. Standard Electrical ratings – Refer to Table 6 Delta Controls’ range of reliable measurement instruments can be customised to meet individual Process connection • Rc ¼ (BSP), ¼ NPT Internal, ½ NPT Internal, ½ NPT External. Unit weight • Between 2.7 kg – 8.4kg (6lb – 18.4lb) see end of datasheet for different instrument weights. Accuracy • Set point repeatability ± 1% of span at 20 °C / 68 °F ambient. TDS. GR3-6. 0806 ISSUE D requirements. For technical advic

Enclosure FINISH Enclosures W and H are clear anodised aluminium; Epoxy paint is optional see Code 50 in Table 8. A and R are natural finish stainless steel. All are suitable for use in hazardous areas as defined by NEC Article 500, Class 1 Groups A, B, C, D Class II Groups E, F, G Division 1 and 2. See Table 3 Code A. TABLE 1 WEATHERPROOF ENCLOSURES Aluminium General Purpose Weatherproof For outdoor industrial use IP66/NEMA 4. Stainless Steel Weatherproof For outdoor aggressive atmospheres e.g. marine NEMA type 4X/IP66 FLAMEPROOF ENCLOSURES Aluminium Weatherproof/Explosionproof IP66/NEMA...

Electrical Entry See TECHNICAL DATA and DIMENSIONS fig 1 to 5. NOTE 1: Other lengths available – please contact sales for engineering codes NOTE 2 : Weatherproof terminal enclosure Code C can only be combined with Table 1 Enclosure Codes W and A. NOTE 3 : Intrinsically Safe terminal enclosure Code V and W can only be combined with Table 1 Enclosure Codes 4 and 5. Material of Wetted Parts Factory Sealed Flying Lead. See fig. 1,2, 3 & 4. Class I, Groups A, B, C, D; Class II Groups E,F,G. 0.45m/18 in. long flying lead (other lengths available) with 1/2-14 NPT external conduit thread. Integral...

Setting Ranges & Performance Data SWITCHING DIFFERENTIAL – REFER TO TABLE 6 mbar SWITCHING DIFFERENTIAL – REFER TO TABLE 6 in.H2O / PSI Due to manufacturing tolerances the figures quoted in these tables are for guidance only and are typical for weatherproof models. Flameproof models may be up to 2 times higher depending on the range. Should the differential be critical for specific applications, our engineers should be consulted prior to ordering

Switching Options The switch contacts are hermetically sealed inside a stainless steel enclosure for protection against aggressive and corrosive atmospheres. UL & CSA listing applies to the explosionproof hermetically sealed switch which is suitable for use in hazardous areas as defined by NEC Article 500, Class I Groups A,B,C,D Class II Groups E,F,G Division 1 and 2. IEC 947-5-1/EN 60947-5-1 Rating UL/CSA Rating 11 Amps @ 110/250V AC & 5/0.5 Amps @ 30/125V DC Silver contacts Designation & Utilization Category Rated operational current Ie (A) at rated operational voltage Ue VA Rating Make...

Combinations available, apply for Special Engineering details. Consult Delta Sales Engineering for special requirements Unit Weights UNIT WEIGHTS (Approximate) Refer to table 1 GR3 Code H/W Ranges BC/BU GR3 Code H/W Ranges BD/CB/CE GR3 Code H/W Ranges BY/CS/CK GR3 Code H/W Ranges DC/DD/EA GR3 Code H/W Ranges DP/DT/EH GR3 Code R/A Ranges BD/CB/CE GR3 Code R/A Ranges BY/CS/CK GR3 Code R/A Ranges DC/DD/EA GR3 Code R/A Ranges DP/DT/EH GR6 Code H/W Ranges 0D/0B/0E GR6 Code H/W Ranges 0Y/IS/0K GR6 Code H/W Ranges DC/DD/EA GR6 Code H/W Ranges DP/DT/EH GR6 Code R/A Ranges 0D/0B/0E GR6 Code R/A...

INTRINSIC SAFETY currents of intrinsically safe circuits, we recommend using gold contacts - Refer to Table 6 For use in Zone 1 hazardous areas EEx d IIC T6 (-40° to +60°C) Enclosure Codes H and R and all models (see Table 1) For use in Zone 0 hazardous areas Ex ia IIC T6 (-40° to +60°C) Enclosure Codes 4 and 5 and all models (see Table 1) Snap switches for use in Hazardous Locations. Class 1, Groups A, B, C, D Class II, Groups E, F, G Division 1 and 2 CANADIAN STANDARDS ASSOCIATION Snap switches for use in Hazardous Locations. Class 1, Groups A, B, C, D Class II, Groups E, F, G Division 1...

MODEL GR3 RANGES 0D TO EA (0Y TO EH) Table 5 DIM B 179 (7.04) CODE A & F 205 (8.07) CODE H 195 (7.67) CODE J 154 (6.06) CODE A & F 180 (7.08) CODE H 170 (6.69) CODE J MODEL GR3 RANGES 0D TO EA (0Y TO EH) Table 5 DIM B 192 (7.55) CODE A & F 218 (8.58) CODE H 208 (8.18) CODE J 168 (6.35) CODE A & F 192 (7.55) CODE H 182 (7.16) CODE J Figure 5 MODEL GR3 / 6 WITH TERMINAL ENCLOSURE CODE C, D, V & W. Table 3 *ADD 6mm FOR RANGES BC/0D ALL DIMENSIONS mm (inches) Delta Controls Limited Riverside Business Park, Dogflud Way, Farnham, Surrey GU9 7SS, UK. T+44 (0)12 5272 9140 F+44 (0)12 5272 9168 E...