Barocel ® Vacuum/ Pressure Transducer

Model 590

The Model 590 Barocel transducer is a capacitance manometer with integral signal conditioning to provide a 0±10 VDC output signal compatible with digital voltmeters and data acquisition systems.

The all-welded construction makes it suitable for use in high vacuum systems. It may be supplied with two pressure ports for measuring gauge or differential pressure or with a single pressure port and internal vacuum reference for measuring absolute pressure. High resolution and stability ensure suitability for applications where it is desired to measure a wide range of pressures with a single transducer.

• High accuracy
• Low hysteresis
• Wide measuring range:- 5 decades
• Available 1-1000 torr/mbar full scale
• Differential, absolute, or gauge measurements
• True total pressure measurement
• Independent of gas composition
• High overpressure tolerance
• Fast transient response
• All-welded construction
• High level output signal: ±10V
• Accepts ac or dc power supplies

Process control:
Use the Model 590 Transducer to monitor critical process pressures, or to automate the process operation in a closed-loop feedback system. High repeatability and fast transient response ensure complete, accurate control feedback.

Gauge calibration:
The Model 590 Transducer may be used as a secondary or transfer standard, for calibration of other pressure/vacuum gauges such as thermocouple, Pirani, ionization, or strain gauges. High accuracy, repeatability, and independence from gas composition make this an ideal transfer standard.

Analytical instruments:
The Model 590 Transducer can provide accurate pressure measurement and control for critical analytical instruments or techniques such as mass or radiation spectrometers, chromatographs, B.E.T surface analysis, ion sources and electron microscopes.

Vacuum gauging:
The Model 590 Transducer is ideal for True Total Pressure basic vacuum gauging, where high accuracy, repeatability, and low cost are important. The 590 is constructed entirely of high-vacuum compatible materials, and is equally at home in industrial or research environments.

Leak testing:
Use the Model 590 to detect or measure leak rates by monitoring changes in pressure over a period of time. The broad sensitivity of the 590 makes it possible to measure very small leak rates without the use of special leak detection gases.

Mass flow measurement:
The Model 590 Transducer will provide highly accurate measurement of the DP across an orifice or laminar flow element for mass flow measurement or control. Sensitivity to extremely small differential pressures makes the 590 ideal for very low flows.

Accessories

	Barocel Model 525A Thermal Base Improves stability, especially where there are fluctuations in ambient temperature Accelerates degassing Prevents condensation of volatile gases and water vapour	Recommended for use with 500 Series transducers for enhanced stability. The 525A thermal base attaches to the base of the 500 Series transducers to regulate its internal temperature automatically.