Ta640a/641a/642a Portable High Precision Anemometer USB Wind Speed Meter Handheld Airflow Tester HVAC Air Volume Logger

1. NoteDefault Models:Integrated Models: TA640A, TA641A, TA641B, TA642A, TA642BSplit Model: TA642C (features a retractable handle design; 1m telescopic rod + 1m cable, total length 2m)Power Supply:TA640A: 2 × AAA batteriesTA641A / TA641B: 3 × AAA batteriesTA642A / B / C: 3 × AA batteries or powered via 5V USB Micro interfaceMeasurement Functions:TA640A: Wind speed / Wind temperature, Data holdTA641A: Wind speed / Wind temperature, Upper & lower limit screen light alarmTA641B Wind speed / Wind temperature + Screen light alarm + HumidityTA642A: Wind speed / Wind temperature / Air volume + Audible & visual alarms 1000 data sets storageTA642B Wind speed / Wind temperature / Air volume + Audible & visual alarms USB communication 1000 data sets storageTA642C: Wind speed / Wind temperature / Air volume + Audible & visual alarms USB communication Data storageOther Features:Multiple selectable measurement units4-digit wind speed display, maximum value: 9999Sampling rate: 2 times per secondAuto power-off after 15 or 10 minutes (manual shutdown supported)Note: Due to page limitations, some specifications are not fully listed. If you have any questions, please contact us.2. ParametersSpecificationTA640ATA641ATA641BTA642ATA642BTA642CWind Speed Measurement Range0.1-30.0 m/s0.06-30.0 m/s0.06-45.0 m/sWind Speed Accuracy±(2% + 0.2)±0.2 + (±2% of reading)±(2% + 0.2)Wind Speed Resolution0.1 m/s0.01 / 0.1 / 1Air Temperature Range0-450-45 (32.0-113.0)Air Temperature Accuracy±2±2 (±3.6)Air Temperature Resolution- 0.1 / 1Humidity Measurement Range- 0~99% RH- Humidity Accuracy- ±8% RH- Wind Speed Display4-digit display, up to 9999Sensor Typebeam cutting methodSampling Rate2 times/secondRepeatability- ±2%Data Storage- 1000 recordsUSB PC CommunicationAuto Power-Off15 minutes (manually switchable)10 minutes (manually switchable)15 minutes (manual shutdown available)Operating Environment<; 2000 mStorage Environment-10~50, Max 70% RH (remove)Product Dimensions168×59×29 mm152×55×33 mm239×70×35 mm175×70×35 mmDisplay Size34×31 mm37×41 mm53×44 mmWeightApprox. 120 g (excluding )Approx. 135 g (excluding )Approx. 210 g (excluding )Power Supply2 × 1.5V AAA (R03/LR03)3 × 1.5V AAA (R03/LR03)3 × 1.5V AA (LR06) batteries / USB micro port 5V3. FeaturesMultiple wind speed unit switchingSupports units such as m/s, km/h, ft/min, mph, and knots, with one-click switching.Multi-Functional MeasurementsMeasures wind speed, air temperature, air volume; TA641A also supports humidity.8-Blade High-Sensitivity SensorEnsures fast response and stable accuracy with low-friction design.Detachable Probe with Extendable RodEquipped with a 1m telescopic rod and 1m cable; total 2m lengthData Hold & MaxMinAverage LockLock and view realtime maximum, minimum, and average values.High/Low Limit Alarm with Visual AlertsFlashing screen and buzzer alarm when readings exceed preset thresholds.4. ApplicationsIdeal for HVAC system inspection, ventilation testing, clean room monitoring, environmental field studies, and industrial air flow diagnostics.Origin : Mainland ChinaIntegrated Models : TA640A, TA641A, TA641B, TA642A, TA642BWind Speed Measurement Range : 0.06-45.0 m/sWind Speed Accuracy : ±(2% + 0.2)Wind Speed : 4-digit display, up to 9999Sampling Rate : 2 times/second

• DUOCARA Ta640a/641a/642a Portable High Precision Anemometer USB Wind Speed Meter Handheld Airflow Tester Hvac Air Volume Logger