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Mass and Volumetric Gas Flow Meters

Mass and Volumetric Gas Flow Meters
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Mass and Volumetric Gas Flow Meters For Clean Gases U p to 18 Hour Battery Charge on Portable U “-B” Models U anges of 0 to 0.5 SCCM Up to 0 to 3000 SLM R U eports Mass Flow, Volumetric Flow, R Temperature, and Pressure U 10 ms Response Time—Field Adjustable < U 30+ Gas Calibrations Including 1 Pure and Mixed Gases U ressure, Temperature and Volumetric or P Mass Flow Simultaneously Displayed U IST 5-Point Certificate Included N U o Straight Runs of Pipe Required N U No Warm-Up Time U Turndown Ratio of 200:1 (0.5% Maximum Flow) U RS232 Standard U Custom Live Gas Blend Programming U Store Up to 20 User Defined Gas Blends FMA-1603A includes 110 Vac power supply and a 1.8 m (6') cable 8-pin mini DIN connector, Shown smaller than actual size. The FMA-1600A Series mass and volumetric flow meters use the principle of differential pressure within a laminar flow field to determine the mass flow rate. A laminar flow element (LFE) inside the meter forces the gas into laminar (streamlined) flow. Inside this region, the Poiseuille equation dictates that the volumetric flow rate be linearly related to the pressure drop. A differential pressure sensor is used to measure the pressure drop along a fixed distance of the LFE. This, along with the viscosity of the gas, is used to accurately determine the volumetric flow rate. Separate absolute temperature and pressure sensors are incorporated and correct the volumetric flow rate to a set of standard conditions. This standardized flow rate is commonly called the mass flow rate and is reported in units such as standard cubic feet per minute (SCFM) or standard liters per minute (SLM). Standard units include a 0 to 5V output (4 to 20 mA optional) and RS232 communications. The gas select feature can be adjusted from the front keypad or via RS232 communications. Volumetric flow, mass flow, absolute pressure, and temperature can all be viewed or recorded through the RS232 connection. It is also possible to multi-drop up to 26 units on the same serial connection to a distance of 38 m (125'). These flow meters are available in a portable version (“-B” option), the battery charge will last up to 18 hours. Accuracy: ±(0.8% of rdg + 0.2% FS) Repeatability: ±0.2% Turndown Ratio: 200:1 Response Time: 10 ms typical default response time for 63.2% of a step change. A variable register allows response time to be field adjustable to a certain extent via RS232 communications. The primary trade-off for response time is signal noise Output: 0 to 5 Vdc standard Operating Temperature: -10 to 50°C (14 to 122°F) Zero Shift: 0.02% FS/°C/atm Span Shift: 0.02% FS/°C/atm Humidity Range: 0 to 100% non-condensing Pressure (Maximum): 145 psig Measurable Flow Rate: 125% FS Supply Voltage: 7 to 30 Vdc (15 to 30 Vdc for 4 to 20 mA output) Supply Current: 35 mA typical current draw; 100 mA available supply recommended Cable Connection: 8-pin mini DIN Wetted Parts: 302 and 303 SS, FKM, heat cured silicone RTV, glass reinforced PPS, heat cured epoxy, aluminum, gold, brass, 430 FR stainless (416 stainless steel on large sizes), si

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Program Custom Mixed Calibrations for Bioreactors, Chromatography, Welding, Lasers, Stack/Flue, Fuel Gases and More Differential Pressure Sensor Absolute Pressure Sensor Temperature Sensor Exploded View of Internal Laminar Flow Elements Standard Pressure Drops† Full Scale Flow Rate Dimensions: mm (inch) Depth Port Size Flow Range

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Maximum Flow 0.5 SCCM 1 SCCM 2 SCCM 5 SCCM 10 SCCM 20 SCCM 50 SCCM 100 SCCM 200 SCCM 500 SCCM 1 SLM 2 SLM 5 SLM 10 SLM 20 SLM 50 SLM 100 SLM 250 SLM 500 SLM 1000 SLM 1500 SLM 2000 SLM 3000 SLM Description Replacement 8-pin male mini DIN connector cable, single ended, 1.8 m (6') 8-pin male mini DIN connector cable, single ended, 7.6 m (25') 8-pin male mini DIN connector cable, double ended, 1.8 m (6') 8-pin male mini DIN connector cable, double ended, 7.6 m (25') 8-pin male mini DIN to DB9 female adaptor, 1.8 m (6') 8-pin male right-angle mini DIN cable, single ended, 1.8 m (6') Multi-drop...

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