TMA-20HW - Test Equipment Depot
Contents
1. e Push MX MN key for 2 seconds to exit this mode Air Velocity Manual Data Memory and Read Mode TEST ID 0 Memory Mode e Push Test ID key to select the TEST ID 0 memory e Push AUTO MEM key each time one set of reading to will be stored to the memory At this moment display will show the M symbol one time and the memory address number Total memory size is 99 sets Push READ key to enter READ mode the display will show LR symbol and the memory address number Push A or V key to select the desired memory address number data for display Push READ key again to exit the READ mode Air Flow Manual Data Memory and Read Mode TEST ID 1 4 Memory Mode Push Test ID key to select the TEST ID 1 memory Push lt JAUTO MEM key each time one set of reading to will be stored to the memory At this moment display will show the M symbol one time and the memory address number Total memory size is 99 sets If change to another Flow Set Up setting the TEST ID will automatically increment Push READ key to enter READ mode the display will show R symbol and the memory address number Push A or V key to select the desired memory address number data for display Push MX MIN key to circulated the memory of the maximum MAX air velocity and air flow reading and the memory address number the minimum MIN air2. 4 Retracting the Probe To retract the probe hold the handle in one hand while pushing on the probe tip with the other hand If you feel the probe antenna binding pull gently on the probe snake tube until the snake tube section is retracted Collapse the rest of the antenna by pushing the probe tip Settings and Calibrations Flow Set Up mode e Push key to turn on the meter e Push UNIT key to select the desired measurement unit 2 e Push SET key one time to enter the Flow Setup mode the symbol is displayed There are 4 types Round Duct O Rectangle Duct C Duct Area AREA and K factor Kf e Push A and V keys to scroll through the choices and push key to confirm your choice If round duct is chosen the O symbol will displayed Use A V lt and DP keys to setting the size diameter from 1 0 to 635 0 cm or 1 0 to 250 0 inches Push J key to store the value If rectangle duct is chosen the LX symbol will displayed Use A V lt and gt keys to setting the X size of the duct then push 4 key to store the value and advance to the next dimension the LY symbol will displayed Use A V lt and keys to setting the Y size of the duct then push key to store the value If duct area is chosen the AREA symbol will displayed Use A V lt and gt keys to setting the value and decimal point of the duct area from 0 001 to 9999ft2 o
3. Test ID key A group of samples The statistics maximum minimum average and count are calculated for each TEST ID The total number of TEST IDs is 10 Push Test ID key to select the desired TEST ID number from 0 to 9 lt AUTO MEM key e In the setting mode push this key move flashing cursor to left e In the TEST ID 0 to 4 mode push this key one time store the one data to memory e In the TEST ID number 5 to 9 mode push this key to start auto data memory mode push this key again to exit this mode AV keys e In the setting mode push AV keys to increase or decrease the displayed setting e In the READ mode push AV keys to select increase or decrease the memory address READ key e In the setting mode push this key move flashing cursor to right e Push this key to enter the data memory READ mode push this key again to exit this mode Sensor protection cap Description of Display a LE ni OCIXY KfAREA 2 3VMAX AVG AIR VELOCITY DISPLAY __ FLOW DISREAY M ft i J a wall i Ex uti 7A B MEMORY DISPLAY Air Velocity Display Auto power off indication Data hold indication SET Setting mode indication REC Record mode and current air velocity measured display indication REC MAX Maximum air velocity measured display indi
4. 30 seconds and 1 2 3 4 5 6 7 8 9 10 15 20 25 30 and 60 minutes Push 4 key to store the choice e Push SET key several times until the SET symbol is disappeared to exit the setting mode Auto Power Off Time Setting mode e Push SET key four times to enter this mode the APO symbol and the current auto power off time are displayed e Push A and V keys to setting the desired auto power off time from 1 to 50 minutes or setting to m for disable this function Push J key to store the setting e Push SET key several times until the SET symbol is disappeared to exit the setting mode Backlighting Time Setting mode e Push SET key five times to enter this mode the bL symbol and the current backlight time are displayed e Push A and V keys to setting the desired backlight time from 1 to 50 seconds or setting to s for disable this function Push J key to store the setting e Push SET key several times until the symbol is disappeared to exit the setting mode Air Velocity Calibration mode e Push SET key six times to enter this mode the USEr CAL no symbol is displayed e Push A and V keys to select YES symbol is displayed e Push J key to enter the air velocity zero calibration mode the CAL 0 symbol is displayed Recover the sensor
5. AAMPROBE TMA 20HW Hot Wire Anemometer Test ra ay va 99 Washington Street Melrose MA 02176 Phone 781 665 1400 Toll Free 1 800 517 8431 Users Manual Mode d emploi Bedienungshandbuch Manual d Uso Manual de uso AAMPROBE TMA 20HW Hot Wire Anemometer Users Manual June 2010 Rev 1 2010 Amprobe Test Tools All rights reserved Printed in Taiwan Limited Warranty and Limitation of Liability Your Amprobe product will be free from defects in material and workmanship for 1 year from the date of purchase This warranty does not cover fuses disposable batteries or damage from accident neglect misuse alteration contamination or abnormal conditions of operation or handling Resellers are not authorized to extend any other warranty on Amprobe s behalf To obtain service during the warranty period return the product with proof of purchase to an authorized Amprobe Test Tools Service Center or to an Amprobe dealer or distributor See Repair Section for details THIS WARRANTY IS YOUR ONLY REMEDY ALL OTHER WARRANTIES WHETHER EXPRESS IMPLIED OR STAUTORY INCLUDING IMPLIED WARRANTIES OF FITNESS FOR A PARTICULAR PURPOSE OR MERCHANTABILITY ARE HEREBY DISCLAIMED MANUFACTURER SHALL NOT BE LIABLE FOR ANY SPECIAL INDIRECT INCIDENTAL OR CONSEQUENTIAL DAMAGES OR LOSSES ARISING FROM ANY CAUSE OR THEORY Since some states or countries do not allow the exclusion or limitation of an implied warranty or of incidental
6. or other dangerous or explosive gas mixtures is not recommended UNPACKING AND INSPECTION Your shipping carton should include 1 TMA 20HW Hot Wire Anemometer 1 Users Manual 6 AAA batteries 1 Carrying case If any of the items are damaged or missing return the complete package to the place of purchase for an exchange INTRODUCTION The TMA 20HV Portable Air Velocity Meter is a lightweight instrument that can be used anywhere to measure air velocity The meter uses a snake telescoping probe with a special sensor to accurately measure air velocity in different applications such as hood velocity clean rooms OSHA compliance ventilation ducts and outlets heating and air conditioning wind tunnels product development air flow research and mass flow measurement in ducts OPERATION Getting Started 1 Installing the Batteries Insert 6 AAA batteries as indicated by the diagram located on the inside of the battery compartment 2 Extending the Probe To extend the probe hold the handle in one hand while pulling on the probe tip with the other hand Do not hold the cable while extending the probe as this prevents the probe from extending 3 Using the Snake Telescoping Probe The snake telescoping probe contains the air velocity sensor When using the probe remove the sensor protection cap then rotate or bend the snake tube make sure the sensor window is fully exposed and the orientation is facing upstream
7. velocity and air flow reading and the memory address number and the average AVG air velocity and air flow reading and the total average samples Push READ key again to exit the READ mode Air Flow Auto Data Memory and Read Mode TEST ID 5 9 Memory Mode Push Test ID key to select the TEST ID 5 memory Push lt JAUTO MEM key to start auto data memory mode INTV symbol and current interval time are display when M symbol flicks one time that means one set data has been memorized Total memory size is 99 sets per each IDs Push AUTO MEM key again to exit this mode If change to another Flow Set Up setting the TEST ID will automatically increment e Push READ key to enter READ mode the display will show R symbol and the memory address number Push A or V key to select the desired memory address number data for display e Push MX MN key to circulated the memory of the maximum MAX air velocity and air flow reading and the memory address number the minimum MIN air velocity and air flow reading and the memory address number and the average AVG air velocity and air flow reading and the total average samples e Push READ key again to exit the READ mode Clearing Memory e Push key to turn off the meter e Push and hold down the AUTO MEM key then push key to turn on the meter to enter clear memory mode CLr no symbol is
8. weight 165 g 0 36 Ibs 235 g 0 52 Ibs 150 L x 72 W x 35 H mm 5 9 L x 2 8 W x 1 4 H inches The instruments conform to CENELEC Low voltage directive 73 23 EEC and Electromagnetic compatibility directive 89 336 EEC CE EMC EN 61326 1 This product complies with requirements of the following European Community Directives 89 336 EC Electromagnetic Compatibility and 73 23 EEC Low Voltage as amended by 93 68 EEC CE Marking However electrical noise or intense electromagnetic fields in the vicinity of the equipment may disturb the measurement circuit Measuring instruments will also respond to unwanted signals that may be present within the measurement circuit Users should exercise care and take appropriate precautions to avoid misleading results when making measurements in the presence of electronic interference MAINTENANCE AND REPAIR If there appears to be a malfunction during the operation of the meter the following steps should be performed in order to isolate the cause of the problem e Check the battery Replace the battery immediately when the t _ symbol appears on the LCD e Review the operating instructions for possible mistakes in operating procedure Except for the replacement of the battery repair of the meter should be performed only by a Factory Authorized Service Center or by other qualified instrument service personnel The front panel and case can be cleaned with a mild solution of deterg
9. cation REC MIN Minimum air velocity measured display indication REC AVG Average air velocity measured display indication The average of the last 30 samples Air Velocity Units knots mile hr Miles per hour km hr Kilometers per hour ft min Feet per minute Bft Beaufort scale m s Meters per second Flow Set Up Display Round Duct diameter dimension indication L X Rectangle Duct X dimension indication L Y Rectangle Duct Y dimension indication Kf K factor indication AREA Duct Area indication m2 Square meters ft2 Square feet in Inches cm Centimeter Air Flow Display 2 3V MAX 2 3V Maximum mode is selected indication AVG Average mode is selected indication Current mode is selected indication x 10 Multiply reading by ten x 100 Multiply reading by one hundred x 1000 Multiply reading by one thousand ft3 min Cubic feet per minute m3 min Cubic meters per minute Memory Display TEST ID 0 4 Manu data memory indication TEST ID 5 9 Auto data memory indication SAMLE AG Data memory number address indication AVG SAMPLE BB Total average data number indication M Data memory indication M display one time store one data into the memory R Data read mode indication TC a s Average time constant indication m x TERAN INTV gp Auto data memory interval time indication i Low battery ind
10. displayed e Push Test ID key to select the desired TEST ID to be clear e Push A key to select YES symbol is displayed e Push lt JAUTO MEM key to clear the memorized data e Push key to exit the clear memory mode SPECIFICATIONS General Specifications Display Triple display 4 digit LCD reading Velocity Probe Range 0 to 30 m s 0 to 600 ft min Resolution 0 01 m s 1 ft min Accuracy 3 of reading FS Duct Size Range 1 to 635 cm in increments of 0 1 cm 1 to 250 inches in increments of 0 1 in Volumetric Flow Rate Ranges Actual range is a function of actual velocity and dust size 8 Warm up Time Response Time Sampling Rate Manual Data Memory Capacity Auto Data Memory Capacity Operation Temperature Range Operation Conditions Power Supply Battery Life Probe Dimensions Weight Meter Weight Dimensions Cenelec Direcives lt 1 minute lt 2 seconds One time per second 5 x 99 sets 5 x 99 sets Meter 0 C to 50 C 32 F to 122 F Probe 10 C to 60 C 14 F to 140 F Storage 20 C to 60 C 4 F to 140 F Altitude up to 2000 meters Relative humidity up to 80 RH non condensing 6 pcs 1 5V size AAA batteries Approx 10 hours Wire length 2 2 meter 7 2 ft Probe length 1 2 meter 3 9 ft Probe diameter of tip 9 0 mm 0 35 in Probe diameter of base 28 0 mm 1 1 in Probe
11. ent and water Apply sparingly with a soft cloth and allow to dry completely before using Do not use aromatic hydrocarbons or chlorinated solvents for cleaning If the meter is not to be used for periods of longer than 60 days remove the batteries and store them separately Trouble Shooting If the instrument fails to operate check batteries and test leads etc and replace as necessary Double check operating procedure as described in this user s manual Battery and Fuse replacement Battery use Standard 1 5V AAA Size NEDA 24G or IEC R03 battery X 6 Battery replacement Loosen the 2 screws from the battery access door of the case bottom Lift the battery access door and thus the battery compartment up Replace the battery Re fasten the screws
12. er D SD Hot Wire Anemometer cas TA AMPROBE n TMA 20HW OM RECMAXMINAVG MAX MIN AVG Snake telescoping probe Display 3 Power key Push O power key to turn the meter on or off H Hold key Push H Hold key to freeze or unfreeze the display reading In LH mode push UNIT key to select the desired unit of display 6 key Push key to turn on and off the backlight MX MN key Push MX MN key to circulate the reading of Maximum Minimum Average and Current record mode Push MX MN key for 2 seconds to exit this mode SET key Push SET key to enter setting mode e Flow setup mode e Select a time constant mode e Select auto data memory interval time mode e Auto power off time setting mode e Backlight time setting mode e Air velocity zero calibration mode e Air velocity scale factor calibration mode e Reset to factory default calibration value mode UNIT key Push UNIT key to select the desired unit of measure FLOW key Push FLOW key to select desired air velocity to determine the Air Flow e 2 3V MAX Use the maximum reading obtained to determine the 2 3V MAX Air Flow e AVG Use the average reading to determine the Air Flow e Use the current reading to determine the Air Flow D key Enter Exit a setting mode or store the displayed setting
13. ication CONTENTS SYMBOLS UNPACKING AND INSPECTION INTRODUCTION OPERATION Getting Started Settings and Calibrations Air Velocity Measurement Air Flow Measurement MAX MIN AVG Recording Measurement Air Velocity Manual Data Memory and Read Mode Air Flow Manual Data Memory and Read Mode Air Flow Auto Data Memory and Read Mode Clearing NOTION aaae spnceunane a eee ae lel emcee SPECIFICATION MAINTENANCE AND REPAIR Trouble shooting Battery and Fuse replacement SYMBOLS A Caution Risk of electric shock A Caution Refer to the explanation in this Manual Please remove all the test leads before preforming maintenance cleaning battery replacement fuse replacement etc Complies with European Directives Do not dispose of this product as unsorted municipal waste Conforms to relevant Australian standards amp Contact a qualified recycler for disposal A WARNING and PRECAUTIONS e Do not operate the meter in explosive gas material combustible gas material steam or filled with dust e When using the meter to check air flow make sure that you can safely raise and hold the meter while making measurements Be careful when working on a ladder e Observe all necessary precautions so that the unit does not become caught in moving machinery or touch any exposed electrical wiring e The meter is not designed for use in gas mixtures other than air Use with corrosive
14. or consequential damages this limitation of liability may not apply to you Repair All test tools returned for warranty or non warranty repair or for calibration should be accompanied by the following your name company s name address telephone number and proof of purchase Additionally please include a brief description of the problem or the service requested and include the test leads with the meter Non warranty repair or replacement charges should be remitted in the form of a check a money order credit card with expiration date or a purchase order made payable to Amprobe Test Tools In Warranty Repairs and Replacement All Countries Please read the warranty statement and check your battery before requesting repair During the warranty period any defective test tool can be returned to your Amprobe Test Tools distributor for an exchange for the same or like product Please check the Where to Buy section on www amprobe com for a list of distributors near you Additionally in the United States and Canada In Warranty repair and replacement units can also be sent to a Amprobe Test Tools Service Center see next page for address Non Warranty Repairs and Replacement US and Canada Non warranty repairs in the United States and Canada should be sent to a Amprobe Test Tools Service Center Call Amprobe Test Tools or inquire at your point of purchase for current repair and replacement rates TMA 20HW Hot Wire Anemomet
15. protection cap until the air velocity reading is stable then push 4 key to store the zero air velocity reading and enter the air velocity scale factor calibration mode the scale factor value is displayed e Insert the meter probe into the tunnel with the sensor window toward the air flow Secure the probe firmly with the velocity sensor placed where air speed is known e Push A V lt and gt keys to setting the scale factor value until the display reading reaching desired value then push key to store the scale factor value CAL PASS will display one second e Push SET key several times until the SET symbol is disappeared to exit the setting mode Reset to Factory Default Calibration value mode e Push SET key seven times to enter this mode the dEF CAL symbol is displayed e Push A and V keys to select M O or YES if select YES then push J key will reset to factory default calibration value and exit setting mode Air Velocity Measurement e Push key to turn on the meter e The display will show the air velocity reading directly on the Air Velocity Display e Push UNIT key to select the desired measurement unit e Push H HOLD key to freeze or unfreeze the display readings In HOLD mode the H symbol is displayed and push UNIT key to select another display units reading Ai
16. r 928m2 then push 4 key to store the value If K factor is chosen the Kf symbol will displayed Use A V lt and gt keys to setting the value and decimal point of the K factor from 0 001 to 9999 then push key to store the value Note Kf is the number by which the meter multiplies the velocity measurement to display volume e Push SET key several times until the symbol is disappeared to exit the setting mode Select a Time Constant mode e Push SET key two times to enter this mode the TC symbol and the current time constant are displayed e Push A and V keys to scroll through the choices and push J key to store the choice The choice for the time constant are 1 2 3 4 5 6 7 8 9 10 15 20 25 and 30 seconds e Push SET key several times until the SET symbol is disappeared to exit the setting mode The time constant is an averaging period It is used to dampen the display If you are experiencing fluctuating flows a longer time constant will slow down those fluctuations The average method is also referred to as a moving average Select a Auto Data Memory Interval Time mode e Push SET key three times to enter this mode the INTV symbol and the current interval time are displayed e Push A and V keys to scroll through the log interval choices The choice are 1 2 3 4 5 6 7 8 9 10 15 20 25 and
17. r Flow Measurement AIR FLOW AIR VELOCITY x AREA e Push key to turn on the meter e The display will show the air velocity reading directly on the air velocity display e The flow type setting is displayed on the flow set up display e Push FLOW key to select the desired 2 3V MAX mode AVG mode or current mode If 2 3V MAX mode is chosen the 2 3V MAX symbol will displayed The meter will use the maximum air velocity value obtained to determine the 2 3V MAX Air Flow If average mode is chosen the AVG symbol will displayed The meter use air velocity average value the last 30 samples obtained to determine the Average Air Flow If current mode is chosen no symbol will displayed The meter will use the current air velocity value obtained to determine the Current Air Flow e The display will show the air flow reading directly on the Air Flow Display MAX MIN AVG Recording Measurement e Push MX MN key to enter the recording mode the REC symbol is displayed and the auto power off function will be auto cancelled e Push MX MN key to circulated the display of the maximum LREC MAX minimum LREC MIN average LREC AVG and current LREC air velocity reading e Push H HOLD key to paused recording the H symbol is displayed push LH HOLD key again will resume recording
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