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Transducers

A&N Series 900 vacuum transducers are a complete suite of microprocessor-based, standalone gauges, offering a wide pressure measurement range from above atmosphere to ultra high vacuum. Designed for system integration, the transducers offer both analog and digital communication (RS485 and RS232). Digital transducers allow for all adjustments and monitoring to be delivered real-time, via a host computer. The transducers incorporate MEMS (Micro Electro-Mechanical Systems) based technologies, including MicroPiraniTM and piezo sensors, combined with Mini Ion BA technology resulting in a broad product offering for a wide variety of customer applications.

Series 900 Controller

The PDR900 controller is the ideal solution for vacuum measurement, configuration of digital transducers and advanced system diagnostics. The instrument sets new standards for vacuum gauge controllers and can be used as a stand-alone power supply readout unit or as a tool for configuration, calibration and diagnostics of system integrated transducers in OEM applications. The controller features an easy to use menu-driven user interface, which guides the user through setup and configuration of remote transducer parameters. The readout unit communicates digitally with the transducer which eliminates analog measurement noise coupling via transducer cables. The unit automatically detects the transducer type, and can be used with both RS232 and RS485 transducers.

The PDR900 controller is compatible with all digital Series 900 transducers, including:

• Series 902 Piezo Transducer
• Series 909AR Hot Cathode Transducer
• Series 910 DualTrans™ Transducer
• Series 925C MicroPirani™ Transducer
• Series 979B Atmosphere to Vacuum Transducer

Sensors

In Pirani-type sensors, vacuum measurement is based on thermal conductivity of the gas. The tube contains a fine wire that is maintained at a constant temperature. Heat transferred from the wire relates to the amount of gas present and is used to indicate pressure. There are two types of Pirani tubes that can be run on the A&N 937A Combination Gauge System.

Series 937A Multi Gauge Controller

The Series 937A combination vacuum gauge system will operate as many as five sensors simultaneously and every controller is configured to the user's specifications regarding sensors, line voltage and frequency, units of measure and communication choice.The Series 937A combines the technologies of the cold cathode, standard Pirani, convection Pirani, thermocouple and absolute Piezo sensors to measure from ultra-high vacuum to above atmospheric pressure.The 937A controller is designed for versatility, reliability and economy. The switches are color coded for ease of use and space is available for the user to add identification to the sensor read outs.