| Active strain gauge |
Note: ASG adaptor cable supplied separately. This cable must be used with TIC, AGC, ADC & ADD.
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ASG ACTIVE STRAIN GAUGE 2000 TO 1 mbar
The BOC Edwards Active Strain Gauge (ASG) is a rugged, corrosion resistant diaphragm gauge which provides accurate, gas independent measurement from 2000 mbar to 1 mbar. It can be used as a stand-alone transducer allowing OEMs and system builders to develop low cost, flexible solutions to their vacuum instrumentation needs. Alternatively, it can be connected to the Active Gauge Controller where it can be combined with many other sensor types to provide a complete vacuum instrument solution.
Features & benefits
• Drive electronics combined in the gauge head
- Simplifies system design
- Saves valuable rack space
• Wide range, regulated internal power supply
- Runs from standard d.c. power supplies +13.5 to +36 V
- Tolerant to voltage fluctuations
• Standard analog output 0 to 10 V d.c. |
- Easy to interface with a computer or PLC
• High accuracy and stability
- Accuracy ±0.2% full scale
- Stability 0.2% full scale
• Corrosion resistant, rugged design
- Only material exposed to vacuum is stainless steel 316
- Enclosure rating IP65
• Gas independent measurement
- Pressure measurement is completely independent of gas type making this gauge ideal for applications where gases other than nitrogen are used
• Excellent high pressure resolution
- Ability to resolve 1 mbar changes in system pressure even at pressures near atmospheric makes the gauge ideal for monitoring large, slow-pumping systems
• Part of the Active gauge range
- Standard supply requirements and output voltage allow simple integration into systems using active Pirani, thermocouple, inverted magnetron, strain, wide range and ionization gauges. All of these are compatible with the Active Gauge Controller, a multi-channel digital display and controller |
| Barocel vacuum pressure transducers |
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MODEL 600 BAROCEL® ABSOLUTE VACUUM PRESSURE TRANSDUCER
The Model 600 Barocel transducer is an advanced design capacitance manometer which uses patented technology to improve zero stability after temperature excursions or pressure overloads. An integral vacuum reference of all-welded construction contains gettering material to ensure longterm stability.
In vacuum systems, the Model 600 is the ideal replacement for McLeod, Pirani, or thermocouple gauges. Since pressure is sensed by electrically measuring pressure-induced displacement of a thin metal membrane, calibration accuracy is unaffected by the chemical composition of input media.
Features & benefits
• Wide range
- 4 decades
• High accuracy
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- 0.15% of reading
• High resolution
- 0.01% full scale
• Unaffected by overpressure
- Repeats within 0.01% full scale after being exposed to 2.4 bar (35 psia)
• True total pressure
- Reading independent of gas composition
• High level output
- 0-10 volts d.c. full scale, linear with pressure
• Superior zero stability
- Patented design eliminates errors due to temperature and overpressure effects.
• Stable zero reference
• Alternative for McLeod, Thermocouple and Pirani gauges
• System versatility
- Compatible with a variety of readouts and controllers
• Corrosion resistant
- Measuring cell constructed of Inconel/Monel for high corrosion resistance |
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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 gases, nuclear processes, and those requiring high temperature sterilization.
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 contains gettering material to ensure long term stability and eliminates the need for reference vacuum pumps. |
Features & 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 effect
- Repeats within 0.01% full scale after being exposed to 2.4 bar (35 psia)
• True total pressure
- Reading independent of gas composition
• High level output
- 0-10 V d.c. full scale, linear with pressure |
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MODEL 655, 658 AND 659 BAROCEL®
VACUUM PRESSURE TRANSDUCERS
The 655 Series of Barocel transducers employ a number of proprietary esign features to enhance reliability performance. The sensing cell utilizes a unique diaphragm design, stitch welding process, and a new sensing cavity geometry which provides enhanced resistance to particulate contamination. Performance is further improved by isolating the sensor in a patented, temperature controlled, hermetically sealed enclosure which neutralizes the effect of barometric pressure, humidity and ambient temperature changes. The result is a transducer offering long term stability. |
Features & benefits
• Wide measuring range
- Full four decade measurement
• High accuracy
- 0.15% of reading
• High resolution
- Better than 0.005% of FS
• Temperature controlled
- Internal temperature maintained at 45, 100, or 123 °C depending on the model selected
- Improved zero stability: Better than 0.002% FS / °C
• True total pressure
- Calibration and measurement independent of gas composition
• High Level d.c. output
- 0 to 10 V d.c. full scale, linear with pressure |
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