Liquid Flow Gas Flow Pressure Systems	Home | Downloads | Sitemap | Search | Contact – DEUTSCH | FRANÇAIS | ENGLISH             Products > Gas Flow > Mass Flow Meters & Controllers > red-y compact series             Mass Flow Meters 'red-y compact series'             INSTRUMENT CHARACTERISTICS   – Thermal mass measurement principle – Measuring-, regulation- and alarm function – Insensitive to pressure and temperature changes – High accuracy and turndown ratio – Battery power (2 years of autonomous operation)    or 24 Vdc – Totalizer – Extremely compact unit – CMOS sensor technology – No moving parts – Resistant to pressure bumps – On-the-spot direct reading, including bar graph – Real gas calibration – High precision needle valve – 3-year warranty (except battery)   More Information:   » Instrument Types » Technical Overview » Online Quotation » Applications & Solutions » Rotameter or Mass Flow Meter? » Documentation, Downloads » Contact         INSTRUMENT TYPES   red-y compact meter GCM Thermal mass flow meter   red-y compact regulator GCR Thermal mass flow meter with manual valve   red-y compact switch GCS Thermal mass flow meter with alarm functions   red-y compact all-in GCA Thermal mass flow meter with manual valve & alarm functions   OEM version For customer-specific requirements   Panel mounting kit Panel mounting kits for IP-50 and IP-65 protection         TECHNICAL OVERVIEW   Performance data Media Air, O2, N2, He, Ar, CO2, H2, CH4, C3H8 Other gases and gasmixtures on request     Accuracy (air & equivalents) Eco: ± 2.0% of FS; ranges >200 ln/min ± 3.0% of FS Special: ± 1.0% of FS up to 50 ln/min     Turndown ratio 1 : 50     Response time from 500 ms (depending on the application)     Repeatability ± 1% of full scale     Longterm stability < 1% of measured value / year     Power supply Meter & Regulator Lithium battery (Lifetime about 2 years with constant flow) Option: External supply + 24 Vdc ± 10% or Power Supply Device 230 Vac / 24Vdc     Power supply Switch & All-in External supply + 24 Vdc ± 10% or Power Supply Device 230 Vac / 24Vdc     Pressure 0.2 – 11 bar a     Temperature 0 – 50°C     Materials Anodized aluminium, optional stainless steel electropolished     Seals FKM, optional EPDM     Pressure sensitivity < 0.2% / bar of reading (typical N2)     Temperature sensitivity < 0.025% FS measuring range type / °C       Measuring Ranges Type Full Scale Connection   Full scale freely selectable A3 100 mln/min G1/4"     A4 200 mln/min G1/4"     A5 500 mln/min G1/4"     B3 1000 mln/min G1/4"     B4 2000 mln/min G1/4"     B5 5000 mln/min G1/4"     C3 10 ln/min G1/4"     C4 20 ln/min G1/4"     C5 50 ln/min G1/4"     D3 100 ln/min G1/2"     D4 450 ln/min G1/2"       Integration Display 6-digit LCD in engineering units and bar graph     Process connection G¼“ female less than 60 ln/min, G½“ female less than 450 ln/min     Inlet section None required     Mounting orientation Any orientation (horizontal only above 5 bar)       Safety Test pressure 16 bar a     Leak rate < 1 x 10-6 mbar l/s He     Environ. protection IP-50, but front plate IP-65 if panel mounted     EMC EN 61326-1       Optional Flow switch Settings       Function Min. or max. alarm     Threshold Between 0 and FS freely adjustable, normally open or closed     Fail-safe mode Can be activated     Alarm delay Adjustable 0 – 180 s     Alarm hysteresi Freely adjustable     Alarm suppression Can be activated     Alarm reset Automatic or manual     Contact Floating changeover contact (24 V, 1 A)         DOWNLOADS   Document File/Size   Data Sheet red-y compact series PDF/550kB   Data Sheet Fittings PDF/300kB   CAD 3D models         » Flow Solutions and Applications     » More Downloads           Vögtlin Instruments AG – flow technology – Phone +41 61 756 63 00 – Last Update: 31.01.2012