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ABM 100 Air Flow Meter: Handheld Anemometer for HVAC Duct Ventilation
Quick Answer: The ABM 100 air flow meter from Silver Automation Instruments is a handheld anemometer for HVAC duct ventilation. It measures air velocity, air temperature, and calculates air volume flow after you enter duct width, height, or diameter. Send us your duct size, air velocity range, and temperature range for a price quote.
What the ABM 100 Air Flow Meter Is
The ABM 100 is a portable hot-wire anemometer. We supply this unit for HVAC commissioning, duct balancing, and ventilation audits. The hot-wire sensor sits at the end of a telescopic probe. The probe extends from 0.3 m to 1.0 m. That reach helps technicians measure supply and return air inside ceiling ducts without a ladder. Engineers in Singapore, Vietnam, and Saudi Arabia have used this unit for office tower ventilation checks. It weighs about 400 g with batteries. The display shows air velocity, temperature, and calculated airflow at the same time.
Measurement Range and Accuracy
The ABM 100 air flow meter offers air velocity range from 0.2 to 30 m/s. Resolution is 0.01 m/s. Accuracy is plus or minus 3 percent of reading plus 0.1 m/s. Temperature range is minus 10 °C to 60 °C. Air flow calculation range is 0 to 99,999 m3/h after you input rectangular or round duct dimensions. The unit stores up to 99 readings. Minimum and maximum hold functions help you check duct face velocity across a grille. We get questions about low velocity in laminar flow hoods. In that case you need a different thermal anemometer with a small probe. Tell us your application before ordering.
HVAC Duct Ventilation Use Cases
A common job is measuring outside air intake. A facility manager in Malaysia called us last year. He needed to verify 12 floor air handling units in a 15 story building. He used the ABM 100 air flow meter at each ceiling diffuser. He recorded average air velocity at 0.8 m/s to 1.5 m/s on supply air. Return air grilles read 0.5 m/s to 0.9 m/s. This indicated the rooftop AHU fan speed was set too low on two floors. He sent us photos of the screen and asked about spot readings versus traverse readings. We suggested a traverse method with 9 points per duct. That gave him a repeatable airflow number for the commissioning report.
Because duct geometry changes, a single point reading is not enough. In practice, most engineers skip the full traverse because they are short on time. That leads to air flow errors of 20 to 40 percent. We have seen this on customer sites many times. Use the ABM 100 to take a 9 point traverse, average the velocity, and multiply by the duct free area. That gives a repeatable air flow number.
The same unit works in food plants and pharmaceutical cleanrooms where you need air change rate checks. In a cleanroom you often measure HEPA filter face velocity.

Why Handheld Anemometers Work for Duct Balancing
Duct balancing technicians work fast. They need a meter that starts up under 10 seconds. The ABM 100 auto-zeroes the hot-wire sensor on startup. It has a backlit LCD for dark plant rooms. The probe tip is protected by a sliding cover. Battery life is around 40 hours with two AA alkaline cells. We ship the unit with a hard case, calibration certificate, and English manual. Some customers ask about data logging. The ABM 100 does not have USB output. If you need continuous logging for a 48 hour duct survey, ask us about a paperless recorder or a thermal mass flow meter with 4-20 mA HART output. We can build a small monitoring kit for HVAC energy audits.
Ordering Information and Lead Time
Send us your duct size, velocity range, temperature range, and number of measurement points. A typical quote includes the ABM 100 unit, telescopic probe, battery, hard case, and calibration certificate. Lead time to Australia, Singapore, UAE, and Brazil is usually 3 to 7 working days by DHL. We also ship to Chile, Mexico, Indonesia, Saudi Arabia, and Vietnam. Payment by T/T or Western Union. For OEM orders above 20 units we print your logo on the front panel. Contact Silver Automation Instruments for the ABM 100 air flow meter price. Tel: +86-25-68650347. WhatsApp: +86-25-52155837. WeChat: +86 15365082610.
FAQ
What is the ABM 100 air flow meter used for?
The ABM 100 is a handheld anemometer for HVAC duct ventilation. It measures air velocity, temperature, and air volume flow in ducts and at diffusers.
Can the ABM 100 measure air flow in a round duct?
Yes. Enter the duct diameter and the unit calculates air flow in m3/h or cfm. Use a traverse method with 6 to 10 points for repeatable results.
Does the ABM 100 log data to a computer?
No. The ABM 100 stores up to 99 readings on screen. For continuous logging, contact us about a thermal mass flow meter with 4-20 mA HART output or a paperless recorder.
What accuracy can I expect for HVAC measurements?
The ABM 100 accuracy is plus or minus 3 percent of reading plus 0.1 m/s. That is enough for most duct balancing and ventilation checks. For cleanroom HEPA face velocity, request a unit with a smaller probe and tighter calibration.
How do I buy the ABM 100 air flow meter from Silver Automation Instruments?
Send us your duct dimensions, air velocity range, and number of measurement points. We will reply with a quote, shipping time, and payment details.

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