641B Integrated Gauge Pressure Controllers
641B Integrated Gauge Pressure Controllers
The 641B gauge pressure controllers is a self contained, compact, closed-loop electronic pressure control system containing a Baratron® capacitance manometer, normally closed proportioning control valve, and closed-loop control electronics. Electrically similar to a standard MFC, the 641B is powered by ±15 VDC at only 200 mA, permitting use with standard power supply and display electronics. The pressure output and input control signals are linear 0-5 or 0-10 VDC. Two trip points with LED status indicators are for use as simple on/off process limits.
- Integrated Baratron® manometer for accuracy, reliability, and wide range
- Full Scale ranges as low as 10 Torr for low pressure processes
- Can be used with upstream or downstream controller applications
- Two alarm trip points for process limit control See All Features
| Compare | Description | Drawings, CAD & Specs | Avail. | Price | ||
|---|---|---|---|---|---|---|
 | 641B11TS1V42VGauge Pressure Controller, 10 Torr, 10,000 sccm, 0.25 in. Tube, Viton, Viton Valve Plug | |||||
| 641B12TS1V42VGauge Pressure Controller, 100 Torr, 10,000 sccm, 0.25 in. Tube, Viton, Viton Valve Plug |
Configuration Options
The following options are available for 641B Gauge Pressure Controllers
Ordering Code Example: 641B13TW1V42V
| Configuration Option | Option Code |
|---|---|
|
641B Differential Pressure Controller |
641B |
Pressure Range Full Scale |
|
| 10 Torr | 11T |
| 100 Torr | 12T |
| 1000 Torr | 13T |
| 60 psi | 61P |
| 100 psi | 12P |
Fittings |
|
| Swagelok 4 VCR male | W |
| Swagelok 8 VCR male | T |
| Swagelok 1/4 in. | S |
| W-Seal (2787.3F) | H |
| C-Seal (2787.1) | C |
Valve |
|
| Normally closed | 1 |
Seal Materials |
|
| Viton | V |
| Kalrez | D |
| Metal | M |
Orifice Size |
|
| A (50 sccm) | A |
| #1 (200 sccm) | 1 |
| #2 (1000 sccm) | 2 |
| #3 (5000 sccm) | 3 |
| #4 (10000 sccm) | 4 |
| #5 (20000 sccm) | 5 |
| #6 (30000 sccm) | 6 |
Trip Points |
|
| With | 2 |
Valve Plug Material |
|
| Viton | V |
| Kalrez | D |
| Metal | M |
| Kel-F | F |
Specifications
- Type641B Gage Pressure Controller
- Pressure Range10, 100, 1000 Torr (mmHg), 60, 100 psig (Full Scale)
- Fitting Type4 VCR, 8 VCR, 0.25 in. male tube NPT fittings, or Surface Mount
- Flow Rate50, 200, 1000, 5000, 10000, 20000, 50000 sccm (nominal Full Scale flow rates for N2 with 15 psig on inlet and atmosphere on outlet)
- Trip PointsTwo open-collector transistors
Rated: 250 mA @ 30 VDC
Adjustable: 1 to 100% of Full Scale
Hysteresis: 3% of Full Scale
Indicators: Green LED's on when actuated - Pressure Control Accuracy±0.2% of Full Scale
- Transducer Over Pressure Limit45 psia or 2x Full Scale, whichever is greater
- Maximum Differential Pressure30 psi for 20,000 and 50,000 sccm orifices 150 psi for 50 to 10,000 sccm orifices (consistent with transducer overpressure limit)
- Control ModeDownstream standard; Upstream optional
- 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<100 msec
- Operating Temperature0 to 50°C (32 to 122°F)
- Storage Temperature-20 to 80°C (-4° to 176°F)
- External Leak Integrity<10-9 scc/sec He
- 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)
(through closed valve)* - Wetted MaterialsStandard: 316L S.S., 316L/VAR S.S., Inconel, Nickel
Optional: Viton®, Kalrez®, Kel-F® - Power Required±15 VDC ±5%, 200 mA maximum
- Connector-Interface15-pin male type "D"
- Meter Response Time<1.0 sec (excluding system time constant)
- RFI SensitivitySAMA 33.1, 1-abc: <0.2% of Full Scale
- Input-Output Signals0-5 VDC standard; 0-10 VDC optional
- Cable Length100 feet (30 m) maximum
- Weight2.54 lbs. (1.15 kg)
- Dimensions1.5 inches (38.1 mm) x 4.88 inches (124 mm) (4 VCR) x 5.50 inches (140 mm) maximum
- ComplianceCE
Resources
Application Notes
640/641 Pressure Controllers Using the P and I Switches: A Normal User Adjustment(63.9 kB, PDF) Configuring 640/641 Compact Pressure Controllers
Literature
Manuals
640B/641B Pressure Controller Manual(582.5 kB, PDF)
