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DigiVac 200 Pirani Instruction Manual

Digital vacuum gauge revsion k13a
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INSTRUCTION MANUAL
DIGIVAC Model 200 Pirani
Digital Vacuum Gauge
Revsion K13A
YOU MUST READ THIS MANUAL BEFORE USE
Readings from 1 – 2000 millitorr
The DIGIVAC Company
105B Church Street
Matawan NJ 07747
www.DIGIVAC.com
(732) 765-0900
(732) 765-1800 FAX

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Summary of Contents for DigiVac 200 Pirani

  • Page 1 INSTRUCTION MANUAL DIGIVAC Model 200 Pirani Digital Vacuum Gauge Revsion K13A YOU MUST READ THIS MANUAL BEFORE USE Readings from 1 – 2000 millitorr The DIGIVAC Company 105B Church Street Matawan NJ 07747 www.DIGIVAC.com (732) 765-0900 (732) 765-1800 FAX...

  • Page 2: Table Of Contents

    3.0 Unpacking and Inspection. 4.0 Installation. 5.0 Operation. 6.0 Servicing and Calibration. 7.0 Notes on Calibration. 8.0 Understanding Microns, Torr, and Absolute Pressure. 9.0 Accessories and Modifications 10.0 Terms & Conditions Instruct/200 Pirani.4vlc DIGIVAC 201 series Instruction Manual Page 2...

  • Page 3: Description And Principle Of Operation

    Model 200 our best selling vacuum instrument: simple is best and robust is a must. The model 200 Pirani employs a VRC Pirani tube instead of a Varian 531 gauge tube. The instrument features large, bright LEDs visible from across the room with a hard, vinyl clad metal enclosure.

  • Page 4: Operation

    6.0 for gauge tube cleaning instructions. The RS232 connection can be made to a PLC or computer via a male DB9 cable connection to the female jack on the DIGIVAC. The DIGIVAC acts as a DCE, so a straight serial connection is appropriate.
  • Page 5 If you purchased the Ethernet option, please refer to the model 200 Ethernet Addendum for initial setup. Your 200 Pirani should be set by default with the IP address 192.168.0.200. Surf over to (or whatever your IP address was set to) and say “yes” to security screens http://192.168.0.200...
  • Page 6 Press carriage return or enter to submit the query or change the set point. Note that while the web terminal is open, the main 200 Pirani screen will not update. If at any time the web terminal or the main 200 Pirani applet window becomes unresponsive, close the browser (not just reloading the tab or closing the tab) and reconnect.

  • Page 7: Notes On Calibration

    7.0 NOTES ON CALIBRATION. The DIGIVAC is calibrated in nitrogen, which has thermal properties virtually identical to air. If you are using a Pirani vacuum gauge, other gases will affect the readings by an amount proportional to the thermal conductivity of the gases.
  • Page 8 27 inches of mercury. Below that, it is much more useful to talk in terms of absolute pressure, starting from absolute zero. The DIGIVAC and all similar instruments do just this. One TORR, a commonly used unit, is an absolute pressure of one millimeter of mercury. A millitorr is equal to one thousandth of a TORR.

  • Page 9: Accessories And Modifications

    COMPATIBILITY WITH OTHER GAUGE TUBES. On special order, DIGIVAC Instruments can be provided to use with most other vacuum gauge tubes. AC and DC excitation are available. Gauges have been provided for Hastings, Varian, Thermionics, Veeco, VRC, and Fredericks gauge tubes.
  • Page 10 DIGIVAC product, including, but not limited to, any vacuum system, engine, vehicle, factory, or the like. In the event, a court of law with proper jurisdiction finds DIGIVAC liable to you for any purpose, you agree and acknowledge DIGIVAC’s maximum liability shall not exceed the purchase price of one unit of product giving rise to such liability, or $250.00, whichever is greater.

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