Overview Delta Mobrey GR3 ansd GR6 Series
Delta Mobrey GR3/6 Series Differential Pressure Switch are suitable for setpoints between -12.5mbar and 10bar with maximum working pressures up to 250bar. Launched in the mid-1990s, the Compact Series pressure switches provide users with a compact, robust, and hermetically sealed switch for use in Safe and Hazardous Areas.
The unit is manufactured, checked and supplied in accordance with our published specification, and when installed and used in normal or prescribed applications, with the lid in place and within the parameters set for mechanical and electrical performance, will not cause danger or hazard to life or limb.
Differential Pressure Switch GR3/6 Series
Launched in the mid-1990s, the Compact Series pressure switches provide users with a compact, robust and hermetically sealed switch for use in Safe and Hazardous Areas. The GR Series switches are all housed in a compact and rugged enclosure making them particularly suitable for panel mounting in harsh environments All models in the Compact Series come with hermetically sealed switch contacts and flying leads as standard.
Other products in the series include:
- Pressure Switches: Model GR2/4
- Temperature Switches: Model GR7
Delta Mobrey GR3/6 Series Features:
- Compact and rugged design.
- Weatherproof IP66/NEMA 4
- ATEX Flameproof CENELEC Ex d IIC option
- Stainless steel body option NEMA 4X rating
- Optional weatherproof, ATEX Ex e, ATEX Ex ia or ATEX
- Flameproof Ex d IIC terminal enclosures
- NACE MR-01-75 compatibility.
- Ranges available up to 10 bar (160 psi).
- Static Pressure up to 250 bar (3,500 psi).
- Field adjustable.
- Hermetically sealed snap switch CSA listed.
Application Delta Mobrey GR3 ansd GR6 Series
The GR Series is suitable for a wide range of applications in:
- 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
Advantages:
- Compact design
- The GR Series switches are all housed in a compact and rugged enclosure making them particularly suitable for panel mounting in harsh environments
- Hermetically sealed switches
- All models in the Compact Series come with hermetically sealed switch contacts and flying leads as standard.
Delta Mobrey GR3/6 Series Specification:
- Accuracy: Set point repeatability ± 1% of span at 20°C / 68°F ambient
- Storage Temperature: -40 to +60°C / -40 to +140°F
- Ambient Temperature: Certified Enclosures.
- Maximum Process Temperature: Subject to appropriate installation practice, the component parts will withstand up to +60°C (+140°F). For process temperatures up to +120°C (+248°F), order WETTED PARTS Code R (Table 4). For higher temperatures, refer to SPECIAL ENGINEERING.
- Enclosure classification: IP66 / NEMA 4X / Flameproof Ex d
- Switch output: SPDT or DPDT snap action hermetically sealed microswitch
- Process Connection: Rc ¼ (BSP), 1/4 NPT Internal, 1/2 NPT Internal & 1/2 NPT External Approximate Weight: Enclosures “H, T & W” 2.7kg/6lb to 6.8kg/15lb;“R, A & U” 3.5kg/7.7lb to 7.3kg/16lb. For integral terminal enclosures codes in Table 3 “C & D” GR Series 0.3kg/0.66lb; “J” 1.1kg/2.4lb; “K” 0.4kg/0.88lb.
Electrical Connections Delta Mobrey GR3 ansd GR6 Series
- Flying Lead
- High duty PVC insulated 1.19mm2 /18AWG factory sealed flying leads. Rated insulation voltage CSA 600V.
- Terminal Enclosures
- Suitable for conductor sizes up to 2.5mm2 /14AWG non-pinching, clamped.
- Earthing/Grounding
- An earthing facility is provided. Flying lead versions have separate earth/ground conductor. Terminal enclosures have
additional internal earthing/grounding facilities.
- An earthing facility is provided. Flying lead versions have separate earth/ground conductor. Terminal enclosures have
- Dielectric Strength
- The electrical assembly is capable of withstanding *1.5kV between live parts and earth/ground and 500V between open
contacts
- The electrical assembly is capable of withstanding *1.5kV between live parts and earth/ground and 500V between open
Dimensions Delta Mobrey GR3 ansd GR6 Series
Delta Mobrey GR3 and GR6 WITH FLYING LEADS CODES A & B. Table 3

Delta Mobrey RANGES BC And BU

Dimensions Delta mobrey GR33 and GR6 RANGES BD TO EA / 0D TO EA (0Y TO EH) Table

Download Data Sheet: Differential Pressure Switch GR3_6 Series
Ref: delta-mobrey.com
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