Related Manuals for TSI Instruments ACCUBALANCE 8371
Summary of Contents for TSI Instruments ACCUBALANCE 8371
- Page 1 ® ACCUBALANCE AIR CAPTURE HOOD MODEL 8371 OPERATION AND SERVICE MANUAL 1980335, REVISION E FEBRUARY 2013...
- Page 3 Copyright© TSI Incorporated / 2002-2013 / All rights reserved. Address TSI Incorporated / 500 Cardigan Road / Shoreview, MN 55126 / USA Fax No. (651) 490-3824 LIMITATION OF WARRANTY AND LIABILITY (effective June 2011) (For country-specific terms and conditions outside of the USA, please visit www.tsi.com.) Seller warrants the goods sold hereunder, under normal use and service as described in the operator's manual, shall be free from defects in workmanship and material for 24 months, or if less, the length of time specified in the operator's manual, from the date of shipment to the customer.
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Page 4: Table Of Contents
CONTENTS ABOUT THIS MANUAL................V Formatting and Typography ............... v INTRODUCTION ..................VI SET UP ..................... 1 Unpacking ................... 1 Item ..................... 2 Parts Identification ................3 Display..................3 Display Units ................5 Keypad ..................5 Preparing the Instrument for Use ............6 Installing the Batteries .............. -
Page 5: About This Manual
About this Manual This manual explains how to set up, operate and maintain the ® AccuBalance Air Capture Hood Model 8371. Read it thoroughly before using the instrument. Formatting and Typography Note that step-by-step instructions are numbered in boldface type: 1, 2, 3, etc., set flush-left against the margin. -
Page 6: Introduction
Introduction ® The TSI Model 8371 AccuBalance capture hood is an instrument designed to measure the air flow from diffusers and grilles or the air flow ® entering exhaust outlets. The AccuBalance capture hood is lightweight and easy to use. The instrument can display the measured air flow in four different units: standard cubic feet per minute (SCFM), standard liters per second (Std l/s), standard cubic meters per hour (Std m /hr),... -
Page 7: Set Up
Chapter 1 Set Up This chapter guides you through unpacking, setting up, and getting ® started using your AccuBalance Air Capture Hood. See Chapter 2 for a detailed description of all operating features. ® Figure 1: The AccuBalance Air Capture Hood Unpacking Carefully unpack the instrument and accessories from the carrying case. -
Page 8: Item
Table 1 List of components Item Part No. Model 8371 base 2 ft x 2 ft (610 mm x 610 mm) hood fabric 1307060 Frame support poles 1081390 2 ft (610 mm) frame tubing * 1081262 Right angle tubing connectors * 1081584 Battery holder 1081279... -
Page 9: Parts Identification
Parts Identification ® Before proceeding with assembly and use of the AccuBalance capture hood, please become familiar with the various parts of the instrument. Refer to tables 1 through 3 for part descriptions and Figure 2 for general location of major items. ®... - Page 10 6, 7 Figure 3: Display of the Model 8371 1 Flow units: CFM (cubic feet per minute), l/s (liters per second), m /hr (cubic meters per hour), and m /min (cubic ® meters per minute). The AccuBalance capture hood indicates flow already corrected to "standard" conditions. Actual flow conditions can be shown by pressing the ACTUAL/STANDARD key (See Chapter 2...
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Page 11: Display Units
8 “STD” or “ACTUAL” will be displayed at all times. “STD” refers to readings that are based on standard conditions of 29.92 in. Hg (760 mm Hg) and 70 F (21.1 C). “ACTUAL” refers to readings that are converted to local conditions based on temperature and barometric pressure. -
Page 12: Preparing The Instrument For Use
Preparing the Instrument for Use Installing the Batteries ® The AccuBalance capture hood requires four C-size batteries to operate. For convenience, four alkaline batteries are included with ® the AccuBalance capture hood. To install the batteries, follow these three steps: 1 Remove the battery cover located behind the electronic meter on ®... - Page 13 2 Lift the top of the fabric. Insert one end of a support pole into its ® pole mount in the base of the AccuBalance capture hood. There is a cup in each corner of the frame to accept the other end of each support pole.
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Page 14: Basic Operation
Basic Operation C A U T I O N ® HILE USING THE ALANCE AIR BALANCING INSTRUMENT TO TEST AIR FLOW IN DUCTS YOU MAY COME INTO CONTACT WITH OR BE EXPOSED TO DUST POLLEN MOLD FUNGUS OR OTHER AIRBORNE CONTAMINANTS F YOU ARE OR MAY BE SENSITIVE TO DUST... -
Page 15: Turning The Accubalance Air Capture Hood Off
® The AccuBalance capture hood will begin to display values on a continuous basis. When you are ready to read a value, press the SAMPLE button or the button on the top of the right handle. The display will show the word “SAMPLE” for the length of time as determined by the TIME CONSTANT. - Page 16 (This page intentionally left blank) Chapter 1...
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Page 17: Operations In More Detail
Chapter 2 Operations in More Detail This chapter presents more detail on the various features of the ® AccuBalance capture hood and explains how to change fabrics and ® assemble different hood sizes. The AccuBalance capture hood will acknowledge that a key has been pushed by producing a beep. This beep can be disabled as explained in the DIP Switch Settings section of... -
Page 18: Field Calibration
displayed. Release the button, use the buttons to change the value and ENTER to accept it. The ambient temperature will then be displayed. Press the or button to change the value and ENTER to accept it and return to measuring mode. -
Page 19: Changing Hoods
Changing Hoods ® The AccuBalance capture hood is shipped with a 2 ft 2 ft hood attached to the base. Four other hood sizes are available from TSI and can be purchased separately. Available hood sizes are identified by the dimensions of the frame structure at the top of the hood and include 2 ft 4 ft, 1 ft... - Page 20 Figure 6: Diagram of 2 ft x 4 ft frame Unfold the 2 ft 4 ft hood fabric. Insert the frame into the fabric and fasten the fabric to the frame using the Velcro surfaces. The fabric stretches around the outside, ®...
- Page 21 Now it is time to install the support poles. Four white marks are located on the inside top edge of the fabric. These marks identify the location of cups on the underside of the frame tubing that will accept the ends of the support poles. At this time it is helpful to be near a table or some other thigh-high surface to help hold up the fabric while installing the first support pole.
- Page 22 Figure 7: Diagram of 1 ft x 4 ft frame Unfold the 1 ft 4 ft fabric hood. Continue with steps 3 through 10, beginning on page 14. 1 ft 5 ft Hood To assemble and attach the 1 ft 5 ft hood, carefully follow these 10 steps: Build the 1 ft...
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Page 23: Changing Dip Switch Settings
Unfold the 1 ft 5 ft fabric hood. Continue with steps 3 through 10, beginning on page 14. 3 ft 3 ft Hood To assemble and attach the 3 ft 3 ft hood, carefully follow these 10 steps: Build the 3 ft 3 ft frame structure as shown in Figure 9 using four 2 ft aluminum frame tubing pieces, four 1 ft aluminum frame tubing pieces, four right-angle tubing connectors, and four straight tubing... -
Page 24: Setting: Function
Figure 10: Location of DIP Switches To change the switch settings, use the tip of a ball-point pen, pencil, compass, small screwdriver, or other small, pointed object. Refer to Table 4 for switch settings. Table 4: DIP Switch Settings Switch Number Setting: Function 1 OFF, 2 OFF: Flow units = CFM 1 OFF, 2 ON: Flow units = m3/hr... -
Page 25: Connecting The Optional Printer
Connecting the Optional Printer ® To connect the optional printer to the AccuBalance capture hood, locate the Printer Interface Cable (supplied with the optional printer) and connect the 9-pin end labeled “PRINTER” to the printer and the other ® end to the data port of the AccuBalance capture hood. - Page 26 (This page intentionally left blank) Chapter 2...
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Page 27: Maintenance
Chapter 3 Maintenance ® The AccuBalance capture hood is designed for long-term field use. If ® the AccuBalance capture hood is used with reasonable care, it should be able to make precise measurements over a long time period. Some of the components can be cleaned periodically. -
Page 28: Meter
Meter ® The AccuBalance capture hood has a built-in electronic flow meter. Do ® not try to detach the meter from the base. The AccuBalance capture hood should be used and stored within the specified temperature range, 32 to 140°F (0 to 60°C). The meter case, display screen and membrane switch can be cleaned using a damp cloth with mild detergent solution. -
Page 29: Troubleshooting
Chapter 4 Troubleshooting Table 6 lists the symptoms, possible causes, and recommended ® solutions for common problems encountered with the AccuBalance capture hood. If a symptom is not listed, or if none of the solutions solves your problem, please contact TSI. ®... - Page 30 Symptom Possible Causes Corrective Action Flow reading The flow is fluctuating Use a longer time fluctuates badly constant Unit is or was recently in Allow unit to stabilize in "ERR1" appears ambient temperature the operating outside of operating temperature range of temperature 32 to 140ºF (0 to 60ºC) Temperature...
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Page 31: Back Pressure
Appendix A Back Pressure It is commonly known that an air capture hood may induce a back pressure. In general, back pressures are caused by restrictions in the flow path as well as frictional pressure losses. In order to improve accuracy and sensitivity, all air capture hoods incorporate a contracted flow section. - Page 32 To make back pressure corrections, first determine the back pressure correction factor, C . The back pressure correction factor, C b , can be determined as follows: C b = ---- where V and V o are the average air velocities in the duct ahead of the diffuser with and without the capture hood in place, respectively.
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Page 33: Specifications
Appendix B Specifications Flow Range 30 to 2,000 CFM (15.0 to 1,000 l/s, 50 to 3,500 m /hr, 0.84 to 55.0 m /min) 5% reading 5 CFM Accuracy (5% reading 2.4 l/s, 5% reading 8.5 m /hr, 5% reading 0.15 m /min) Operating Temperature Range 32-140F (0-60C) - Page 34 TSI Incorporated – Visit our website www.tsi.com for more information. Tel: +1 800 874 2811 India Tel: +91 80 67877200 Tel: +44 149 4 459200 China Tel: +86 10 8251 6588 France Tel: +33 4 91 11 87 64 Singapore Tel: +65 6595 6388 Germany Tel: +49 241 523030 P/N 1980335 Rev E ©2012 TSI Incorporated...
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