Absolute Pressure Controller, 100 Torr, 1000 sccm, 4 VCR-M, Viton Seal, Viton Valve Plug
Model: 640B12TW1V22V
Absolute Pressure Controller, 100 Torr, 1000 sccm, 4 VCR-M, Viton Seal, Viton Valve Plug
Absolute Pressure Controller, 100 Torr, 1000 sccm, 4 VCR-M, Viton Seal, Viton Valve Plug
Model: 640B12TW1V22V
Overview
Overview
The 640B12TW1V22V Absolute Pressure Controller features 100 Torr full scale pressure measurement and a 1000 sccm valve orifice with 4 VCR type male fittings. It has a Viton seal and a Viton valve plug. This Absolute Pressure Controller is a self-contained compact, closed-loop electronic control system used for upstream or downstream pressure control. It contains a Baratron® Capacitance Manometer, normally-closed proportioning control valve, and closed-loop control electronics. Electrically similar to a standard MFC, the 640B is powered by ±15 VDC at only 200 mA, permitting use with standard power supply/display electronics. The pressure output and input control signals are linear 0-5 or 0-10 VDC, user-selectable. Two trip points are included in the 640B, with LED status indicators, for use as simple on/off process limits.
Technical Specs
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TypeAbsolute Pressure Controller
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Pressure Range100 Torr
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Fitting Type4 VCR male
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Valve PositionNormally closed
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Valve SeatViton
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Valve OrificeNo. 2 (1000 sccm)
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Flow Rate1000 sccm
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Trip PointsTwo open-collector transistors, Rated 250 mA @ 30 VDC, Adjustable 1 - 100% of Full Scale
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Plug MaterialViton
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Pressure Resolution<100 msec
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Pressure Control Accuracy±0.2% of Full Scale
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Transducer Over Pressure Limit45 psia or 2x Full Scale, whichever is greater
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Maximum Differential Pressure150 psi for 50 - 10,000 sccm orifices, 30 psi for 20,000 and 50,000 sccm orifices (consistent with transducer overpressure limit)
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Control ModeDownstream
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Pressure Measurement Accuracy±0.5% of Reading (includes linearity, hysteresis, and repeatability)
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Zero Temperature Coefficient±0.02% of Full Scale/°C
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Span Temperature Coefficient±0.04% of Reading/°C
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Control Range>2 to 100% of Full Scale
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Typical Response Time<1.0 sec (excluding system time constant)
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Operating Temperature0 - 50°C (32 - 122°F)
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Storage Temperature-20 - 80°C (-4 - 176°F)
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External Leak Integrity<10-9 scc/sec He
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Leak Integrity Through Closed ValveElastomer valve: <10-4 scc/sec He, Metal valve: <1% of Full Scale (N2 @ 1 atm. δP), Kel-F valve: <0.5% of Full Scale (N2 @ 1 atm. δP)
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Wetted Materials316L S.S., 316L/VAR S.S., Inconel, Nickel, plus valve seal
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Power Required±15 VDC ±5%, 200 mA max.
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Connector-Interface15-pin male type D
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IndicatorsGreen LED on when actuated
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RFI SensitivitySAMA 33.1, 1-abc: <0.2% of Full Scale
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Input-Output Signals0-5 VDC standard, 0-10 VDC optional
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Hysteresis3% of Full Scale
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Cable Length100 ft. (30 m) max.
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Weight2.54 lbs. (1.15 kg)
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Dimensions1.5 x 4.88 x 5.5 in. (38.1 x 124 x 140 mm)
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ComplianceCE
Resources & Downloads
Literature
Absolute Pressure Controller, 100 Torr, 1000 sccm, 4 VCR-M, Viton Seal, Viton Valve Plug
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