The TA642 Series High Accuracy Digital Anemometer is a professional handheld air velocity and airflow measurement instrument designed for accurate measurement of air speed, air volume and ambient temperature. The series includes integrated models TA642A and TA642B, as well as the split probe model TA642C, providing flexible solutions for different testing environments. Equipped with a high-performance infrared waveguide sensor, the TA642 Digital Anemometer delivers fast response, stable readings and reliable measurement performance. It is widely used in HVAC systems, air conditioning duct testing, ventilation system commissioning, cleanroom airflow inspection, industrial ventilation monitoring, exhaust systems, building engineering acceptance and environmental testing. The instrument supports multiple air velocity and airflow units, with customizable duct cross-sectional area settings for automatic airflow calculation. It is suitable for measuring airflow in round ducts, rectangular ducts and various ventilation systems. The TA642B and TA642C models feature built-in data logging and USB communication functions, allowing connection with a computer for real-time data acquisition, historical data export, measurement curve analysis and report generation, making testing records easier to manage and trace. With practical functions including data hold, MAX/MIN recording, high/low alarm settings, automatic power-off and low battery indication, the compact and portable TA642 Series Air Velocity Meter is an ideal solution for HVAC professionals, engineers, technicians, manufacturers, laboratories and educational institutions.

The TA643A High Accuracy Thermal Anemometer is a professional air velocity measurement instrument designed for accurate airflow testing, especially in low-speed airflow environments. Featuring a highly sensitive thermal sensing telescopic probe, it provides precise measurement of air velocity, air temperature, and airflow volume with a wide velocity range of 0.06 to 45.00 m/s. As a professional thermal anemometer, digital anemometer, air velocity meter, and airflow measurement instrument, the TA643A adopts a slim retractable probe design, allowing measurements in narrow spaces, inside air ducts, equipment openings, and clean environments. It is widely used for HVAC system commissioning, ventilation testing, cleanroom airflow verification, laboratory airflow measurement, fan performance testing, and industrial air circulation analysis. The instrument supports customized duct area settings and automatically calculates airflow volume, with multiple selectable units for velocity and airflow measurement. Equipped with a VA color display, built-in memory for up to 1000 data records, and USB communication capability, the TA643A enables real-time data acquisition, airflow trend analysis, and measurement report generation through computer software. With high measurement accuracy, portable design, and intelligent data management functions, this air velocity tester and airflow meter is ideal for applications in HVAC engineering, building ventilation inspection, air purification systems, electronics manufacturing, equipment cooling analysis, environmental monitoring, power plants, industrial facilities, and scientific research laboratories.

The TA646A Digital Anemometer is a professional handheld air velocity measurement instrument integrating airflow speed and ambient temperature measurement. It is also known as an air velocity meter, wind speed meter, airflow tester, ventilation tester, or portable airflow measurement device. Equipped with a high-sensitivity infrared laser-cut sensor, the instrument provides fast and accurate measurement of air velocity and temperature in various airflow environments. The TA646A supports multiple wind speed units and features practical functions including data hold, maximum/minimum value recording, and backlight display, offering convenient operation, reliable performance, and excellent portability for field applications. The TA646A Digital Anemometer is widely used in HVAC system commissioning, air conditioning outlet testing, ventilation duct inspection, fresh air system evaluation, fan and blower performance testing, industrial workshop airflow monitoring, power plant ventilation inspection, petrochemical facility safety monitoring, steel and metallurgy production environments, aviation airflow measurement, outdoor weather observation, building engineering acceptance, underground space ventilation assessment, and warehouse air circulation testing. With its compact design, accurate measurement capability, and versatile functions, the TA646A Digital Anemometer is an ideal airflow measurement solution for HVAC engineers, maintenance technicians, industrial inspectors, facility managers, and professionals requiring reliable air velocity and temperature testing in field environments.

The TA650A Digital Sound Level Meter is a professional handheld noise measurement instrument, also known as a sound level meter, noise tester, decibel meter, sound meter, or noise monitoring device. Equipped with a high-sensitivity condenser microphone, it provides a wide measurement range of 30.0 to 130dB with 0.1dB resolution and ±1.5dB accuracy. The A-weighting measurement mode simulates human hearing characteristics to provide reliable environmental sound level evaluation. The digital noise meter supports FAST and SLOW time weighting modes, allowing accurate measurement of transient noises, machine operating noise, and stable environmental sound levels. With a windscreen microphone cover, data hold function, maximum/minimum value recording, backlit display, and automatic power-off function, the instrument delivers convenient operation for both indoor and outdoor noise inspections. The TA650A handheld sound level meter is widely used in industrial manufacturing, equipment maintenance, occupational health and safety, construction engineering, environmental monitoring, education, commercial facilities, and product quality testing. It is suitable for factory workshop noise measurement, production line noise control, machinery performance evaluation, urban environmental noise monitoring, classroom and hospital sound assessment, building acoustic inspection, and noise testing of electrical appliances, motors, fans, and other products. It is an ideal solution for professional noise control, engineering inspection, and daily field measurement applications.

The TA651B Digital Sound Level Meter is a professional portable noise measurement instrument designed for accurate environmental sound level testing and decibel measurement. Equipped with a high-sensitivity 1/2-inch condenser microphone, this digital noise meter provides reliable dBA measurements for various acoustic environments. The sound level tester supports FAST and SLOW time weighting modes, allowing users to capture both rapidly changing and stable noise signals. It integrates multiple functions including noise measurement, ambient temperature and humidity monitoring, high/low alarm settings, data hold, maximum/minimum/average value recording, analog bar display, alarm backlight indication and low battery warning. The TA651B noise meter is widely used in industrial manufacturing, factory workshops, machinery maintenance, construction sites, building inspection, environmental monitoring, property management, residential communities, offices, classrooms, commercial facilities, cinemas, entertainment venues, server rooms and quality inspection laboratories. With its compact design, easy operation and reliable measurement performance, the TA651B digital sound level meter provides an effective solution for noise assessment, workplace safety management, equipment noise analysis and noise reduction evaluation.

The TA652 Series Digital Sound Level Meter is a professional noise measurement instrument, also known as a Sound Level Meter, Noise Meter, Decibel Meter, or Noise Tester, designed for environmental noise monitoring, industrial noise testing, and acoustic evaluation applications. Equipped with a high-sensitivity condenser microphone, the instrument provides a wide measurement range and supports A-weighting and C-weighting selection, along with Fast and Slow time weighting modes, enabling accurate measurement of sound pressure levels in various environments and noise conditions. The TA652 Series integrates multiple practical functions including real-time temperature monitoring, data hold, maximum/minimum value recording, average measurement, data logging, and high/low noise alarm settings. The TA652B model features a USB communication interface, allowing connection with a computer for real-time data acquisition, historical data management, noise trend curve generation, and measurement report export. With its compact handheld design, intuitive operation, and reliable measurement performance, the TA652 Series Digital Sound Level Meter is widely used in environmental protection monitoring, industrial manufacturing, machinery maintenance, construction sites, occupational health and safety, transportation noise monitoring, schools, hospitals, offices, shopping malls, cinemas, recording studios, laboratories, and acoustic research applications. It is an ideal solution for engineers and professionals who require accurate noise measurement, sound environment assessment, compliance testing, and long-term noise monitoring.