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Edwards (formerly BOC Edwards) Vacuum Gauges and Vacuum Calibration

Edwards Model 622 Barocel ® Bakeable Vacuum/Pressure Transducer

The model 622 Bakeable Barocel is an adaptation of the field proven model 600 vacuum/pressure transducer, the signal conditioning electronic components are separated from the sensor, allowing it to be operated at 200 °C as required by some applications. Among these applications are processes involving condensable gasses, nuclear processes, and those requiring high temperature sterlisation.

The sensor employs the same high performance features found in the model 600. A temperature sensor within the transducer head provides zero sensitivity compensation to maintain accuracy over a wide temperature range. Removable connectors at the electronic package helps simplify installation. An integral vacuum reference of all-welded construction constrains gettering to ensure long term stability and eliminates the need for reference vacuum pumps

Edwards Model 622 Barocel ® Bakeable Vacuum/Pressure Transducer

Features and Benefits

Sensor bakeable and operable to 200°C
Fully temperature compensated
High accuracy – 0.15% of reading
High resolution – better than 0.01% full scale
Stable zero reference
Small overpressure affect – repeats within 0.01% full scale after being exposed to 2.4bar (35psia)
True total pressure – reading independent of gas composition
High level output

Edwards Model 622 Barocel ® Bakeable Vacuum/Pressure Transducer

Technical specification

Pressure ranges:
0-10, 0-100, 0-1000 mbar
0-10, 0-100, 0-1000 Torr
Ranges to 10000 Torr also available
Accuracy: ± ( 0.15% of reading + 0.01% of full scale)
0.5% of reading also available
Resolution: Better than ±0.01% full scale
Operating temperature
Sensor: 0 – 200 °C
Signal conditioner: 0 – 65 °C
Temperature affect on zero: < 0.005% full scale/ °C
Temperature affect on sensitivity < 0.02% reading/ °C
Overpressure without damage: 1.25 x full scale range or
2.4 bar (35psia) absolute exposure
Overpressure effect: Repeats within 0.01% full scale after 2.4 bar (35psia) exposure
Material exposed to process: Inconel and Monel
Internal Volume: 8.3cm³ (includes 1/2” dia tube)
Time constant: 8 msec
Output signal: 0-10 V d.c. Linear with pressure
Power requirements: ±15 V d.c. ±5% regulated to ±15 at 30mA
Weight: 1.3 KG (2.9lb)
Standards
Electronic design: EN 61010-1
Electromagnetic compatibility: EN 61326 Industrial Location, Class A Emissions

Edwards Model 622 Barocel ® Bakeable Vacuum/Pressure Transducer

Ordering Information
Edwards Model 622 Barocel ® Bakeable Vacuum/Pressure Transducer

Edwards Model 622 Barocel ® Bakeable Vacuum/Pressure Transducer

Accessories
Adapter cable Burocel 600 to AGC (female FCC68) 0.5m: D40003030