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Product Series Overview 641B Integrated Gauge Pressure Controllers Technical Specs Technical Specs Type Gauge Pressure Controller Pressure Range 100 Torr Fitting Type 0.25 in. tube Valve Position Normally closed Valve Seat Viton Valve Orifice No. 4 (10,000 sccm) Trip Points Two open-collector transistors, Rated 250 mA @ 30 VDC, Adjustable 1 - 100% of Full Scale Plug Material Viton Pressure Resolution Pressure Control Accuracy ±0.2% of Full Scale Transducer Over Pressure Limit 45 psia or 2x Full Scale, whichever is greater Maximum Differential Pressure 150 psi for 50 - 10,000 sccm orifices, 30 psi for 20,000 and 50,000 sccm orifices (consistent with transducer overpressure limit) Control Mode Downstream Pressure Measurement Accuracy ±0.5% of Reading (includes linearity, hysteresis, and repeatability) Zero Temperature Coefficient ±0.02% of Full Scale/°C Span Temperature Coefficient ±0.04% of Reading/°C Control Range >2 to 100% of Full Scale Typical Response Time Operating Temperature 0 - 50°C (32 - 122°F) Storage Temperature -20 - 80°C (-4 - 176°F) External Leak Integrity -9 scc/sec He Leak Integrity Through Closed Valve Elastomer valve: -4 scc/sec He, Metal valve: Wetted Materials 316L S.S., 316L/VAR S.S., Inconel, Nickel, plus valve seal Power Required ±15 VDC ±5%, 200 mA max. Connector-Interface 15-pin male type D Indicators Green LED on when actuated RFI Sensitivity SAMA 33.1, 1-abc: Input-Output Signals 0-5 VDC standard, 0-10 VDC optional Hysteresis 3% of Full Scale Cable Length 100 ft. (30 m) max. Weight 2.54 lbs. (1.15 kg) Dimensions 1.5 x 4.88 x 5.5 in. (38.1 x 124 x 140 mm) Compliance CE Technical Specs Type Gauge Pressure Controller Pressure Range 100 Torr Fitting Type 0.25 in. tube Valve Position Normally closed Valve Seat Viton Valve Orifice No. 4 (10,000 sccm) Trip Points Two open-collector transistors, Rated 250 mA @ 30 VDC, Adjustable 1 - 100% of Full Scale Plug Material Viton Pressure Resolution Pressure Control Accuracy ±0.2% of Full Scale Transducer Over Pressure Limit 45 psia or 2x Full Scale, whichever is greater Maximum Differential Pressure 150 psi for 50 - 10,000 sccm orifices, 30 psi for 20,000 and 50,000 sccm orifices (consistent with transducer overpressure limit) Control Mode Downstream Pressure Measurement Accuracy ±0.5% of Reading (includes linearity, hysteresis, and repeatability) Zero Temperature Coefficient ±0.02% of Full Scale/°C Span Temperature Coefficient ±0.04% of Reading/°C Control Range >2 to 100% of Full Scale Typical Response Time Operating Temperature 0 - 50°C (32 - 122°F) Storage Temperature -20 - 80°C (-4 - 176°F) External Leak Integrity -9 scc/sec He Leak Integrity Through Closed Valve Elastomer valve: -4 scc/sec He, Metal valve: Wetted Materials 316L S.S., 316L/VAR S.S., Inconel, Nickel, plus valve seal Power Required ±15 VDC ±5%, 200 mA max. Connector-Interface 15-pin male type D Indicators Green LED on when actuated RFI Sensitivity SAMA 33.1, 1-abc: Input-Output Signals 0-5 VDC standard, 0-10 VDC optional Hysteresis 3% of Full Scale Cable Length 100 ft. (30 m) max. Weight 2.54 lbs. (1.15 kg) Dimensions 1.5 x 4.88 x 5.5 in. (38.1 x 124 x 140 mm) Compliance CE Resources & Downloads Resources & Downloads Literature 640B/641B Pressure Controller for Closed-Loop Electronic Pressure Control (231.6 kB, PDF) Gauge Pressure Controller, 100 Torr, 10,000 sccm, 0.25 in. Tube, Viton, Viton Valve Plug PART: 641B12TS1V42V 15 Weeks Loading... Request a Quote Compare Add to List Add to List Create a New List List Name Required Create a New List Cancel Add to List Your Saved Lists: Preferred List" selected> Add to List Create a New List List Name Required or Create a New List Cancel Add to List 1 item(s) added to 641B12TS1V42V Gauge Pressure Controller, 100 Torr, 10,000 sccm, 0.25 in. Tube, Viton, Viton Valve Plug Continue Shopping View All Saved Lists Overview Technical Specs Resources & Downloads Need help? Contact an Applications Specialist by sending us an email 641B12TS1V42V - Drawings & CAD Additional CAD file downloads are not available for this product. CAD File Downloads: Loading... Download Close Close Close 641B12TS1V42V - Drawings Additional drawings are not available for this product. Close Close 641B12TS1V42V©2026 MKS Inc. All rights reserved.
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To access this and other valuable technical resources, please sign in or register for a new online account. Cancel Add to Cart Gauge Pressure Controller, 100 Torr, 10,000 sccm, 0.25 in. Tube, Viton, Viton Valve Plug Part: 641B12TS1V42V Availability: 15 Weeks Add to Cart Also available on Newport.com Qty: Availability: 15 Weeks Shop at Newport.com Ultra-High Velocity Learn More Invalid VAT ID
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