Mass Flow Controller provides high accuracy.
Press Release Summary:
GFC self-contained thermal mass flow controller measures and controls flow rates of gases with +/-1.5% full-scale accuracy. Stainless-steel model has wetted parts of stainless steel, and aluminum model has wetted parts of aluminum, brass, and stainless steel. Built-in, tiltable 3 1/2-digit LCD readout provides readings in direct engineering units. Controller has max flow of 1000 sL/min, max pressure of 500 psig, and output signal of 0-5 Vdc.Original Press Release:
Low Cost Mass Flow Controllers
GFC Low Cost self-contained Thermal Mass Flow Controllers are
designed to accurately measure and control the flowrates of gases. Controllers are constructed of rigid metallic components. Nylon is not used. Flowrates are unaffected by temperature and pressure variations.
Stainless steel models have wetted parts of stainless steel. Aluminum models have wetted parts of aluminum, brass and stainless steel. O-rings are Viton(TM).
Local setpoint adjustments are conveniently accessible from the
outside. External set point adjustments of the control valve are
facilitated through a 15 pin D-connector. Control valves are normally closed proportionating electromagnetic valves.
A tiltable LCD readout is built into the top of the meter. Readings are in direct engineering units in terms of specific gases. Remote reading installations are possible by means of an optional extension wire supplied with a modular phone plug. Conveniently overlapping flow ranges.
Accuracy: ±1.5% of full scale.
Repeatability: 0.5% of full scale.
Maximum Flow: 1000 sL/min [N2].
Response Time: Typically 2 seconds to within ±2% of flow setting.
Maximum Gas Pressure: 500 psig / 34.5 bars.
Pressure Coefficient: 0.01% of full scale / psi (0.07 bar).
Temperature Coefficient: 0.15% of full scale / deg C.
Transducer Input: +12 Vdc; 1100 mA maximum.
Output Signal: 0 - 5 Vdc or optional 4 - 20 mA.
Leak Integrity: 1 x 10E-7 sccs He maximum to outside environment.
Readout: 3-1/2 digit LCD.
Connections: 1/4 or 3/8" compression fittings.
