Related Manuals for Amprobe TMA-20HW-B
Summary of Contents for Amprobe TMA-20HW-B
- Page 1 TMA-20HW Hot-Wire Anemometer Users Manual • Mode d’emploi • Bedienungshandbuch • Manual d’Uso • Manual de uso...
- Page 3 TMA-20HW Hot-Wire Anemometer Users Manual June 2010, Rev.1 ©2010 Amprobe Test Tools. All rights reserved. Printed in Taiwan...
- Page 4 “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®...
- Page 5 TMA-20HW Hot-Wire Anemometer Snake telescoping probe. Display. Power key : Push power key to turn the meter on or off. H Hold key : Push H Hold key to freeze or unfreeze the display reading. In H mode, push UNIT key to select the desired unit of display. key : Push key to turn on and off the backlight.
- Page 6 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. • Flow setup mode. •...
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Page 7: Description Of Display
• In the READ mode, push “” keys to select increase or decrease the memory address. READ key : • In the setting mode, push this key move flashing cursor to right. • Push this key to enter the data memory READ mode, push this key again to exit this mode. - Page 8 SET : Setting mode indication. REC : Record mode and current air velocity measured display indication. REC MAX : Maximum air velocity measured display indication. 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...
- Page 9 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.
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Page 10: Table Of Contents
CONTENTS SYMBOLS .......................1 UNPACKING AND INSPECTION ................1 INTRODUCTION .....................2 OPERATION ......................2 Getting Started ....................2 Settings and Calibrations ..................2 Air Velocity Measurement ................5 Air Flow Measurement ..................6 MAX/MIN/AVG Recording Measurement ............6 Air Velocity Manual Data Memory and Read Mode ........6 Air Flow Manual Data Memory and Read Mode ...........7 Air Flow Auto Data Memory and Read Mode ..........7 Clearing Memory ....................8 SPECIFICATION .......................8... -
Page 11: Symbols
SYMBOLS � Caution ! Risk of electric shock � 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 � Conforms to relevant Australian standards Do not dispose of this product as unsorted municipal waste. -
Page 12: Introduction
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 –... - Page 13 • Push “SET” key one time to enter the Flow Setup mode, the “ SET ” symbol is displayed. There are 4 types : Round Duct ( ), Rectangle Duct ( ), Duct Area (AREA), and K factor (Kf). • Push “” and “” keys to scroll through the choices and push “↵” key to confirm your choice.
- Page 14 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 •...
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Page 15: Air Velocity Measurement
Air Velocity Calibration mode • Push “SET” key six times to enter this mode, the “USEr CAL no” symbol is displayed. • Push “” and “” keys to select “ ” symbol is displayed. • Push “↵” key to enter the air velocity zero calibration mode, the “CAL 0” symbol is displayed. -
Page 16: Air Flow Measurement
Air Flow Measurement AIR FLOW = (AIR VELOCITY) x (AREA) • Push key to turn on the meter. • The display will show the air velocity reading directly on the air velocity display. • The flow type setting is displayed on the flow set up display. •... -
Page 17: Air Flow Manual Data Memory And Read Mode
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 “ R ” symbol and the memory address number. -
Page 18: Clearing Memory
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 “” or “” key to select the desired memory address number data for display. - Page 19 Warm up Time : < 1 minute Response Time : < 2 seconds Sampling Rate : One time per second. Manual Data Memory Capacity : 5 x 99 sets. Auto Data Memory Capacity : 5 x 99 sets. Operation Temperature Range : 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)
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Page 20: Maintenance And Repair
� . 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. -
Page 21: Battery And Fuse Replacement
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.
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