TSI Instruments ALNOR AXD 530 Owner's Manual
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TSI Instruments ALNOR AXD 530 Owner's Manual

TSI Instruments ALNOR AXD 530 Owner's Manual

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OWNER'S MANUAL
AXD 530
MicroManometer

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Summary of Contents for TSI Instruments ALNOR AXD 530

  • Page 1 OWNER’S MANUAL AXD 530 MicroManometer...
  • Page 2 Limitation of Warranty and Liability Seller warrants that this product, under normal use and service as described in the operator's manual, shall be free from defects in workmanship and material for a period of two (2) years, or the length of time specified in operator's manual, from the date of shipment to the customer.

  • Page 3: Table Of Contents

    Table of Contents Features ....................3 Using the AXD530 Safely ..............3 Getting Started ................... 4 Installing Batteries ................. 4 Preparing the Instrument............... 5 Attaching the Optional Pitot-Static Probe........5 Start-Up Sequence................ 6 Zeroing the Instrument ..............6 The Display ..................7 Modes....................
  • Page 4 Appendix D: Correction Factors for Non-Standard Conditions.16 Method 1..................17 Method 2..................17 Method 3..................18 Density Correction Factors ............19 For Different Altitudes and Temperatures......19 Appendix E: Effects of Resolution on Accuracy Statement..19 Service Information................21 Instructions for Return ..............22 Service and Repair ..............22 Instructions for Return ..............22 Damaged in Transit ..............23 Ownership/Calibration Log .............24...

  • Page 5: Features

    Features The AXD530 MicroManometer is a meter that measures differential pressure. It is also capable of measuring and displaying air velocity. Functions are selected through a three-key pad. The AXD530 displays measurement results on a liquid-crystal display (LCD), with additional display segments for units of measure and low battery indication.

  • Page 6: Getting Started

    Getting Started Installing Batteries The AXD530 uses three (3) AA size non-rechargeable batteries. The unit was shipped with batteries not installed. You will find the batteries in the instrument package. Back view of the instrument To install the batteries: • Loosen the battery cover screw on the back of the instrument.

  • Page 7: Preparing The Instrument

    LO BATT Low battery displays Always keep a replacement set of new batteries available. Preparing the Instrument Attach hoses to the pressure ports at the top of the instrument. Do not exceed maximum pressure. Attaching the Optional Pitot-Static Probe To attach the probe for measuring air velocity: •...

  • Page 8: Start-Up Sequence

    • Identify the (+) and (-) pressure ports at the top of the AXD530. • Attach the tubing from the total pressure port of the Pitot-static probe to the (+) port of the MicroManometer. • Attach the tubing from the static pressure port of the Pitot-static probe to the (-) port of the MicroManometer.

  • Page 9: The Display

    The Display The AXD530 uses a 4-digit, 7-segment LCD. As a result, measurements exceeding 9,999 of a given unit of measure will be displayed in a scientific notation format of XXEY. The actual reading will be rounded to the nearest thousand, XX. The Y indicates the number of zeros after XX.

  • Page 10: Key Functions

    Key Functions: ON/OFF This key is used to turn the instrument on or off. ZERO The AXD530 will zero the instrument any time this key is pushed. To get a proper zero, make sure no pressure difference is applied across the ports and no kinks are in the hoses.

  • Page 11: Measurement Modes

    For example: To change the units of measurement from feet per minute (fpm) to meters per second (m/s): • Push the UNIT key. • The display annunciator moves to m/s, selecting meters per seconds. • Release the key. Measurement Modes You can set the AXD530 for pressure or velocity measurement by pressing the UNIT key.

  • Page 12: Appendix A: Traversing A Duct To Determine Average Air Velocity Or Volume

    Appendix A: Traversing a Duct to Determine Average Air Velocity or Volume The following techniques can be used to measure airflow inside ducts using a velocity probe or Pitot-static tube. When using a Pitot-static tube, the individual velocities must be calculated for each pressure reading then averaged together.* Averaging pressure with a Pitot tube and then converting that average into velocity will give an incorrect result, especially if many readings are more than ±25% from the...
  • Page 13 diameter) are used for ducts with diameters of 10 inches or smaller. Four or five concentric circles (eight or ten measuring points per diameter) are used for ducts with diameters of 10 inches or more. The preferred method is to drill three holes in the duct at 60½ angles from one another as shown in Figure 1.

  • Page 14: Traversing A Square Duct

    Before taking the measurement, multiply the numbers in the table by the duct diameter to get the insertion depth for the probe. (Do not forget to use the inside dimension of the duct if it is lined with insulation.) Traversing a Square Duct Using the log-Tchebycheff method, the duct is divided into rectangular areas, which are further adjusted in size to account for the effect of the duct wall on airflow.

  • Page 15: Notice Of Disclaimer

    Number of points or traverse lines per side Position relative to inner wall 0.074, 0.288, 0.500, 0.712, 0.926 0.061, 0.235, 0.437, 0.563, 0.765, 0.939 0.053, 0.203, 0.366, 0.500, 0.634, 0.797, 0.947 The duct in Figure 2 has a horizontal dimension between 30 and 36 inches, requiring six points (or six traverse lines).
  • Page 16 The following graphs show approximate velocities for certain differential pressures in the range 0.01 to 0.10 inches H (2.5–25 Pa).

  • Page 17: Appendix C: Maintenance And Troubleshooting

    Appendix C: Maintenance and Troubleshooting Maintenance Periodic maintenance should be performed on the meter. • Batteries should be replaced when the low battery indication is on or when the unit turns itself off after power-up. • Batteries should be removed from the meter if it will not be used for two (2) months or longer.

  • Page 18: Troubleshooting

    Troubleshooting Symptom Check DISPLAY SHOWS [ The measured value is beyond the instrument’s range. Be sure there is no applied pressure, then press ZERO. DISPLAY SHOWS The internal connection between the meter and [ ] the sensor is faulty. Turn the meter off, then turn it back on again.

  • Page 19: Method 2

    the density of the air is 0.075 lb/ft. The velocity values displayed by the AXD530 are the actual velocities only if the density where the Pitot probe measurements are being taken is 0.075 lb/ft . Otherwise, a correction step must be performed to obtain a correct value. Listed below in decreasing order of accuracy are methods for determining a correction factor.
  • Page 20 Method 3 You can use this method if you know the altitude above sea level and the air temperature but are unable to determine the absolute pressure. Using the AXD530 Density Correction Factors chart, find the appropriate correction factor value. Multiply the displayed value by the value in this chart to get the “corrected”...

  • Page 21: Density Correction Factors

    Density Correction Factors For Different Altitudes and Temperatures Altitude (ft.) Temp F° Level 1000 2000 3000 4000 5000 6000 7000 8000 9000 10000 -40° 0.89 0.91 0.92 0.94 0.96 0.98 1.00 1.02 1.04 1.05 1.07 0° 0.93 0.95 0.97 0.99 1.01 1.03 1.05...
  • Page 22 As differential pressure increases, the resolution effect is decreased. The graph below shows the approximate error in % of reading you can expect as differential pressure increases. (See specifications for detailed specifications). Error as a percentage of reading in inches of water due to meter resolution...

  • Page 23: Service Information

    Service Information Contact TSI Incorporated directly, before returning your instrument. See INSTRUCTIONS FOR RETURN. Follow the procedure carefully as it will expedite processing. Failure to follow the procedure may cause return of the unit unrepaired. Send your instrument to the factory transportation prepaid. To assure fast turn- around time, photocopy and fill out this form with as much detail as possible and attach it to the instrument.

  • Page 24: Instructions For Return

    Instructions for Return Service and Repair Please return your Product Registration Card immediately. This allows us send you service reminders, special offers, and important information about your product. Before sending your instrument for calibration or repair, you should call Customer Service. The Service Department will provide you with the cost of service or calibration, Return Material Authorization (RMA) number, and shipping instructions.

  • Page 25: Damaged In Transit

    Damaged in Transit All orders are carefully packed for shipment. On receipt, if the shipping container appears to have been damaged during shipment, the instrument should be thoroughly inspected. The delivering carrier’s papers should be signed noting the apparent damage. DO NOT DISCARD THE BOX.

  • Page 26: Ownership/Calibration Log

    Ownership/Calibration Log Equipment Log Date of Purchase _______________________________________ Calibration Record ______________________________________ 1. _______________ 2. _____________ 3. _______________ 4. _______________ 5. _____________ 6. _______________ 7. _______________ 8. _____________ 9. _______________ 10. ______________ 11. _____________ 12. _______________ Notes: _______________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________...
  • Page 27 AXD530 MicroManometer Specifications Measurement Units Physical Pascals Dimensions in. H 2 O inches of Water Column 7.6 x 3.2 x 1.3 inches 193 x 81 x 33 millimeters feet per minute meters per second Weight 11.6 oz. (330g) with batteries Resolution Pressure Measurement Power Source...
  • Page 28 __________________________________________________________________ TSI Incorporated Alnor Products 500 Cardigan Road Shoreview, MN 55126 USA Toll Free (800) 424-7427 Telephone (651) 490-2811 September 2002 Fax (651) 490-3824 Printed in USA Part No. 116-159-151 Rev. 6 www.alnor.com  Copyright 2002 TSI Incorporated customerservice@alnor.com...

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