Series 905
Page 7
Design Guide
About the evaluation board
The MicroPirani™ Sensor Kit is designed for a high level of
integration, but the evaluation board can get the MicroPirani™
sensor kit up and running in minutes. The evaluation board offers
both RS232 and RS485 digital communication and can be
connected directly to a PC for real time pressure data logging and
setup of digital parameters. For easy connectivity, all Sensor Kit
I/O pins are available through screw terminals on the evaluation
board.
The evaluation board is also compatible with the PDR900
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controller which can be used for pressure readout and setup of
digital parameters.
Features and benefits
• Screw terminals for easy hookup to external components (MicroPirani™ sensor / communication etc.)
• RS232 or RS485 communication easily selectable via jumpers.
• Remote zero switch
• Activity LED
• Power supplied via DSUB connector or via screw terminals (jumper selectable)
• Onboard 5V switchmode powersupply with wide voltage range input.
• Microprocessor reset switch (for external watchdog)
• 9 pin DSUB connector for connection to a PDR900 or serial terminal.
Description
The evaluation board is used as a link between the electronics module and a PDR900 or a standard serial
terminal. The board is easily configured using the onboard jumpers and all terminals have associated text
indicating their function.
The evaluation board allows users to quickly evaluate the features of the 905 MicroPirani
™
Sensor Kit
without having to build an electronic interface from scratch. When the sensor kit is implemented in the
customers system only the electronics module and sensor (with optional cabling) is used.
The serial communication (RS232 or RS485) follows the traditional series 900 transducer command set and
the complete list of commands is located in the command set chapter.
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For more information about the PDR 900, see the following URL:
http://www.mksinst.com/product/product.aspx?ProductID=450
