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In the unlikely event
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Tool requires warranty
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local dealers are
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(note: $500 MSLP limit)
Amprobe® Test Tools www.Amprobe.com
Data Sheet
Hot Wire Anemometer
The Hot Wire anemometer technology eliminates the use of
bearings and rotating parts. Because of this fact the meter
is durable and provides good and stable accuracy of the
measurements. It is used for indoor air quality and HVAC / R
technicians measuring Heat / Ventilation, / Air conditioning
/ Refrigeration, wind flow and temperature in residential,
commercial and industrial air conditioning systems.
TMA-20HW
Highly accurate thermometer with 0.1% basic accuracy for
precise measurements
Fast response telescopic probe for use in hard to reach places
Air Flow Volume (CFM, CMM)
Instant, Avg, 2/3 Vmax Flow Measurements
Velocity m / s, f t / min, knots, km / hr, mph
Data hold & Maximum / Minimum with Time stamp
Data Memory and Real function (99 sets)
Large backlit LCD display with 5 parameters
Auto Power ON / OFF setting
Simple and safe to use
Amprobe® Test Tools www.Amprobe.com
Data Sheet
General Specifications
Display Triple display, 4 digit LCD reading.
Sampling Rate Once per second
Response Time < 2 seconds
Manual Memory Capacity 5 X 99 sets. (Direct reading from LCD display)
Operating Conditions 0°C ~ 40°C (32°F ~ 104°F) 10 ~ 80% R.H.
Power Source 6 X AAA Battery
Battery Life Approx. 10 hours
Dimensions 360.7 X 216 X63.5mm ( L14.2 X W8.5 X H2.5 in) with case
Weight 1043g ( 2.3 Lbs) with case
Probe Dimensions / Weight 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 weight : 165 g (0.36 lbs)
Electrical Specification
Feature Range Accuracy
Air Flow 0.1 to 30.0 m/s ±3% of reading
0.2 to 110 km/hr ±1%FS
10 to 6000 ft/min
0.1 to 59 knots
0.12 to 68 MPH
Air Flow Volume 0 to 999900 CFM ±(1.2% rdg + 5 dgts) up to
0 to 999900 CMM 400V Hz**
Temperature -20°C to +60°C ±0.5°C, ±0.9°F
4°F to +140°F
Humidity 0 to 100%RH ±3%RH
Included Accessories Batteries, Hard Carrying case
©2010 Amprobe Test Tools. All rights reserved.
6/2010 TMA-20HW Rev A
Amprobe® Test Tools
website: www.Amprobe.com
email: info@amprobe.com
Everett, WA 98203
Tel: 877-AMPROBE
Amprobe® Test Tools Europe
In den Engematten 14
79286 Glottertal, Germany
Tel.: +49 (0) 7684 8009 - 0
TMA-20HW Hot Wire Anemometer
