GHR
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A single-stage heated regulator with robust heat transfer technology! The Model GHR™ is a single stage heated pressure regulator designed specifically for use in gas analytical systems. The GHR™ prevents condensation of the sample gas from occurring as a result of Joule-Thomson (JT) cooling during the pressure reduction process of high pressure and high dew point gases or due to low operating or ambient temperature conditions. The GHR™ is designed with a long, spiral flow path including pre and post regulation heat exchangers that provide efficient heat transfer which preserves sample integrity. The first heat exchanger preheats the gas sample above its dew point temperature; preventing condensation during pressure reduction. The second heat exchanger warms the gas sample after pressure reduction; preventing condensation as the gas enters the sample transport system. The GHR™ can be heated using either an electrical cartridge heater with proportional temperature controller or a self-limiting block heater. Both have specific benefits and require a direct power connection. The proportional temperature controller allows for precise temperature control using a digital temperature readout and is protected with a backup thermal cutoff. The self-limiting block heater provides a simple and reliable option that prevents temperature overload and is designed to be mounted in small enclosures or densely populated cabinets. Technical Specifications Maximum pressure rating 6000 psig (413.7 barg) per criteria of ANSI/ASME B31.3 Outlet pressure range Temperature range * Actual limit depends on sealing material chosen. Refer to Temperature Range Comparison Chart. *Process (all models): -40°F to 300°F (-40°F to 149°C) 901-GR controller: 95 to 300°F (35 to 149°C) set at 300°F (149°C); backup thermal cutoff opens at 338°F (170°C) Port sizes Cv Coefficient Maximum flow rate Wetted materials 0.023 ~10 SLM - Standard Liters per Minute (consider heat transfer limitations) Machined parts: 316/316L stainless steel / ISO 15156-3 compliant All other metal parts: stainless steel / ISO 15156-3 compliant Regulator seat material: PFA Seals: User defined Electrical connection Conduit (CSA): GHR: 1/2” FNPT 901-GR: 3/4” FNPT Cable OD (ATEX/IECEx): 3/8” (10mm) Power requirements Electrical approval CSA Certified Assembly: File # 235756; Class 1, Division 1, Groups B, C, & D; T3 ATEX/IECEx Heater Block (Model GHR only): II2G Ex db IIC T3 Product Brief Applications •  Continuous gas sampling in any process industry including natural gas, petrochemical, and oil refining Not for use with Hydrogen, Helium or Neon Benefits •  Presents condensation •  Preserves sample integrity •  Reduces regulator freeze-ups •  Low internal volume assists with faster response time Features •  Quick purging, low volume design •  Piston pressure sensing element •  Pre and post regulation heat exchangers •  20 micron inlet filter •  Two heating method options: •  Cartridge heat

Model Numbering & Additional Part Numbers Your model number is determined by your specific needs. Materials of construction must be compatible with process fluid. Model GHR = GR with self-limiting block heater Sealing material Outlet pressure range (psig) 0 = 0-25 1 = 0-50 2 = 0-100 3 = 0-250 4 = 0-500 1= AC power 2 = DC power (not available in Model 901-GR) Power requirements Electrical approval (other materials available upon request) A = ATEX/IECEx (not available in Model 901-GR) How to build the model number: SS 901-GR = GR with temperature controller How to build the heater block...