Summary of Contents for DUNIWAY Stockroom DRPG-531
- Page 1 Instruction Manual DRPG-531 Portable Battery Operated Gauge Control/Display For Use With DST-531 Thermocouple Sensor Copyright © 2014 DSC Rev061714mrr...
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Page 2: Table Of Contents
Table of Contents Overview p. 4 Quick Start for DRPG-531 p. 5 III. Modes of Display p. 7 A. Display Numeric B. Display Bar Graph C. Display Pumpdown Graph D. Display Line Graph Menu of Configuration Settings p. 10 A. Display B. - Page 3 XII. Instrument Accuracy p. 21 XIII. Specifications p. 21 XIV. Terms of Use and Limited Warranty p. 22 Duniway Stockroom Corporation 48501 Milmont Drive Fremont, CA 94538-7336 Toll Free: 800-446-8811 Phone: 650-969-8811 Fax: 650-965-0764 Email: info@duniway.com www.duniway.com Page 3 of 22...
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Page 4: Overview
Overview The DRPG-531 precision vacuum gauge was built to be a rugged, portable vacuum measurement instrument designed specifically for the demands of field use. First and foremost, it is a highly accurate vacuum gauge using field proven thermocouple sensor technology. The DRPG-531 precision gauge offers several viewing options including numeric, bar graph and pumpdown display. -
Page 5: Quick Start For Drpg-531
Quick Start for DRPG-531 While this vacuum instrument has many features, it is very simple to use. First, unpack the gauge to be sure that you have received everything that you ordered. Next: 1. Remove protective hood 2. Remove the battery cover and install 4 AA batteries. - Page 6 (SEL) Page 6 of 22...
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Page 7: Modes Of Display
III. Modes of Display The DRPG-531 has four modes of display: one numeric and three graphs. The numeric display has three numeric formats: Standard, Precision and Scientific. Display modes are selected from the Configuration option ‘Display’ and Numeric formats are selected from the Configuration option ‘Numeric’. -
Page 8: Display Bar Graph
In the previous example, the battery indicator is shown at full strength and the vacuum pressure indicator is shown in its second of three (logarithmic/ order of magnitude) levels. The following example shows the numeric display when the vacuum sesor tube is disconnected or has failed. Display Bar Graph The bar graph visualizes the current sensor reading with a stepped bar Display Pump-Down Graph... -
Page 9: Display Line Graph
In the top left is the current vacuum pressure display figure. In the center of the first line is the Vacuum System Analysis, ‘PUMP’ and to the right is either the pump down rate in units per minute or the data set window size in hours, minutes and seconds. The ‘STABLE’ case shows the data set window size (ex: ‘1m18s’) Display Line Graph This auto-scaling (or auto-ranging) time graph is a detailed view of the pump-down data. -
Page 10: Menu Of Configuration Settings
IV. Menu of Configuration Settings A. Display Pressing the SEL button from the vacuum display screen will present three sub-menus: Display, Calibration and Setpoints. The display menu is a linear series of options that are stepped or skipped through using the SEL button. -
Page 11: Standard
2. Standard The Standard format has two digits of precision. For example, an internal vacuum value of 1234 microns (μm Hg) would be displayed as 1.2 Torr in the Standard numeric format with Torr units. This number format also gives a filtered number depending on the accuracy of the gauge in the pressure range of measurement. -
Page 12: Auto-Off Time
the pumpdown graph. For example using a pump down time of ten minutes, a system pump down from atmospheric pressure to one Torr in ten minutes has a pump down rate of 760 Torr per ten minutes or 76 Torr per minute. F. -
Page 13: Units
Enter the Self Test sequence with this option. Refer to the section ‘Self Test Operation’ for more detail. J. Units The units settings permits numeric vacuum values to be displayed in any one of a 12 available vacuum pressure units including microns, millitorr, millimeters of mercury, Torr, mbar, Bar, Pa, kPa, inches of mercury, mm of water, inches of water and PSIA. -
Page 14: Auto-Off Operation
The last step in the configuration menu reports the software version identifier. This software version identifier is useful for communicating with the factory or distributor support. N. Factory Defaults The last step in the settings screen will return all the settings to factory defaults. This does not affect calibration. -
Page 15: Vacuum System Analysis
VII. Vacuum System Analysis The result of the Vacuum System Analysis is one of ‘PUMP’, ‘LEAK’, ‘OUTGAS’ or ‘STABLE’ and is shown in some display modes. Internally, one data set serves the Pump down and Time Auto line graphs as well as the Vacuum System Analysis. -
Page 16: Self-Test Operation
VIII. Self Test Operation The Self Test feature is available from the Configuration option ‘Self Test’, pictured below. From this Configuration option, press the ENT button to enter the Self Test sequence. The Self Test sequence proceeds on any button press through a set of steps. The first step in the Self Test sequence, shown below, performs tests of the Battery level and Tube connection. -
Page 17: Calibration Parameters
A. Calibration parameters The calibration method employs a ‘zero, mid and span’ model. The ‘ATM’ parameter is modified to align to 760 Torr, and the ‘VAC’ parameter is modified to align to 5 millitorr. In the ‘Torr x ’ scale employed in the Calibration mode, these pressures are represented with the figures 7600000 and 50, respectively. -
Page 18: Calibrating The Instrument
Quick Note: Completing a calibration session requires execution of F/STORE in order to save the parameters to persistent memory before exiting. Exiting a calibration session without successfully executing the F/STORE function will discard the calibration parameters. C. Calibrating the instrument Note: Calibration always happens in Torr measurement units. -
Page 19: Understanding Torr
Understanding Torr This instrument and many similar instruments are calibrated in microns or ‘millitorr.’ It is appropriate to discuss what microns are and to relate microns to other measures of pressure and vacuum. Microns are not really a measure of vacuum at all, but rather of absolute pressure. It will be recalled that the pressure of the atmosphere is 14.696 or approximately 14.7 pounds per square inch at sea level. -
Page 20: Servicing And Maintenance
XI. Servicing and Maintenance A. Gauge Tube Servicing In many cases, a gauge tube may become fouled with oil or other foreign matter. It is often possible to restore the functionality of contaminated probes with cleaning. If the contaminant is known, the tube should be filled with a fluid that is known to be a solvent to that contaminant. -
Page 21: Instrument Accuracy
XII. Instrument Accuracy .001 to .010 Torr +/- .002 Torr .010 to 10 Torr +/- 20% of reading 10 to 300 Torr In range (10, 300 Torr), increasing pressure results in increasing value 300 to 800 Torr +/- 20% of reading Instrument Accuracy with random tube Assume replacement Tube is the same type from the same manufacturer, MID and VAC set to zero, ATM rough calibrated to 760 when tube exposed to ATM... - Page 22 Duniway Stockroom. Duniway Stockroom will pay for return of products to Buyer, except for products returned to a Buyer from a country other than the United States.
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