Aalborg GFM 17 Operating Manual
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Contents
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6TRANSDUCER INPUT POWER: +12 VDC, 200 mA maximum; +24 VDC optional.Power input is protected by a 750mA M (medium time-lag) resettable fuse, and a rectifierdiode for polarity protection.WETTED MATERIALS:GFM17/37/47/57/67/77: Anodized aluminum, brass, and 316 stainless steel withVITON7 O-rings seals; BUNA7, NEOPRENE7 or KALREZ7 O-rings are optional.GFM17S/37S/47S/57S/67S/77S: 316 stainless steel with VITON7 O-rings seals; BUNA7,NEOPRENE7 or KALREZ7 O-rings are optional.Aalborg7makes no expressed or implied guarantees of corrosion resistance of mass flowmeters as pertains to different flow media reacting with components of meters. It is thecustomers' sole responsibility to select the model suitable for a particular gas based on thefluid contacting (wetted) materials offered in the different models.INLET AND OUTLET CONNECTIONS: GFM17 /GFM37 - 1/4" compression fittingsGFM47 /GFM57 - 3/8" compression fittingsGFM67 - 1/2" compression fittingsGFM77 - 3/4" FNPT fittingsLCD DISPLAY: 3½ digit LCD (maximum viewable digits “1999”), 0.5 inch high characters.On GFM171/371/471/571/671/771 aluminum or stainless steel models the LCD display isbuilt into the upper block element and may be tilted over 90 degrees for optimal viewingcomfort. Remote or panel mounting remote reading is optional.Standard readings are in direct engineering units for the given gas and flow rate (i.e. stan-dard liters/minute [slpm], standard cubic centimeters/minute [sccm], standard cubicfeet/hour [scfh], etc.). 0 to 100% LCD calibration scaling is available upon request at time oforder. Contact your distributor or Aalborg7 when non-standard display settings are desired.TRANSDUCER INTERFACE CABLE: Optional shielded cable is available mating to the GFMtransducer 9-pin “D” connector. [Cable length may not exceed 9.5 feet (3 meters)].4.1 CE ComplianceAny model GFM bearing a CE marking on it, is in compliance with the below stat-ed test standards currently accepted.EMC Compliance with 89/336/EEC as amended; Emission Standard: EN 55011:1991, Group 1, ClassB Immunity Standard: EN 55082-2:1992 |
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