Manuals+

TASI TA642 Series

TASI TA642 Series Digital Anemometer

Instruction Manual

1. Introduction

Thank you for choosing the TASI TA642 Series Digital Anemometer. This device is designed for accurate measurement of air velocity, air temperature, and air flow. It is available in three models: TA642A, TA642B, and TA642C, each offering specific features to suit various environmental testing needs. This manual provides essential information for the safe and effective operation, maintenance, and troubleshooting of your anemometer.

TASI TA642A Digital Anemometer with key features highlighted
Overview of the TASI TA642A Digital Anemometer, highlighting its capabilities for measuring air velocity, air temperature, and air volume, along with features like upper/lower limit prompts and 1000-group data storage.

2. Safety Information

Please read and understand all safety warnings and operating instructions before using this instrument. Failure to do so may result in injury or damage to the instrument.

  • Do not operate the instrument if it appears damaged or is not functioning properly.
  • Ensure batteries are inserted correctly according to polarity markings.
  • Remove batteries if the instrument is not to be used for an extended period to prevent leakage.
  • Keep the fan blades clear of obstructions during operation.
  • Avoid exposing the instrument to extreme temperatures, humidity, or direct sunlight.
  • Do not attempt to disassemble or modify the instrument. Refer servicing to qualified personnel.

3. Package Contents and Parts Identification

Verify that all items are present in your package. The standard accessories vary slightly by model.

TASI TA642C Anemometer diagram and standard accessories
A diagram of the TA642C model with its split-type probe, showing dimensions (total length 2m, wire length 1m). Below, the standard accessories for TA642A/B (meter, cloth bag, manual, USB cable for B) and TA642C (meter, cloth bag, manual, USB cable) are displayed.

3.1 Parts Identification (TA642A/B)

TASI TA642A/B Anemometer panel instruction and battery compartment
Detailed view of the TA642A/B anemometer, showing the front panel with labeled buttons (Fan, Alarm indicator, LCD screen, Unit switch, Power, Mode, Data hold, Data record, Vel/Flow, Max/Min) and the rear battery compartment for 3x 1.5V AA batteries, plus a USB power supply port. Dimensions are 239.9mm x 70mm.

Key components include:

  • Fan: For air velocity and flow measurement.
  • Alarm Indicator: Visual alert for limit breaches.
  • LCD Screen: Displays measurement data.
  • Buttons: Unit switch, Power, Mode, Data Hold, Data Record, Velocity/Flow, Max/Min.
  • Battery Compartment: For 3 x 1.5V AA (LR06) batteries.
  • USB Port: For external power supply and data connection (TA642B/C).

3.2 Detachable Probe (TA642C)

TASI Digital Anemometer 8 fan blades and detachable probe
Close-up of the 8-blade fan design, engineered for low friction and high precision. Also, a view of the detachable probe connection using a stable and reliable four-hole aviation plug.

The TA642C model features a split-type probe with an 8-blade fan design and a 1m flexible stainless handle, connected via a four-hole aviation plug for stable signal transmission.

4. Setup

4.1 Battery Installation

  1. Open the battery compartment cover on the back of the instrument.
  2. Insert 3 x 1.5V AA (LR06) batteries, ensuring correct polarity (+/-).
  3. Close the battery compartment cover securely.

Note: Batteries are not included. The device also supports external power supply via USB.

4.2 Probe Connection (TA642C only)

For the TA642C model, connect the external probe to the main unit using the four-hole aviation plug. Ensure the connection is firm and secure.

5. Operating Instructions

5.1 Power On/Off

  • To power on, long press the Power button.
  • To power off, long press the Power button again.
  • The instrument features an automatic power-off function after 15 minutes of inactivity, which can be disabled if desired.

5.2 Measurement Modes and Units

TASI Digital Anemometer measuring air velocity and flexible probe
The anemometer displaying air velocity, air temperature, and air flow measurements. Below, the flexible measurement probe with a 1m stainless handle and 1m elastic wire (total 2m) is shown in use.
  • Press the MODE button to cycle through different measurement modes (e.g., air velocity, air temperature, air flow).
  • Press the UNIT °C/°F button to switch between different measurement units for air velocity (m/s, ft/min, km/h, mph, knots) and temperature (°C/°F).

5.3 Data Hold, Max/Min, and Zeroing

  • Press HOLD/ZERO to freeze the current reading on the display. Press again to release.
  • Press MAX/MIN to view the maximum or minimum recorded values during a measurement session.

5.4 Data Recording and Storage

TASI Digital Anemometer alarm and data storage features
Illustration of the anemometer's alarm function, indicating a sound and light alert when upper/lower limits are exceeded. Also shows the data storage capability for 1000 groups, with an example of data display on the screen.
  • Press the REC button to start or stop data recording. The device can store up to 1000 groups of data.
  • For models TA642B/C, recorded data can be exported to a PC via USB connection.

5.5 Alarm Function

The anemometer allows setting upper and lower alarm limits. If the measured value exceeds these limits, a buzzer will sound, and the alarm indicator light will flash.

5.6 USB Connection (TA642B/C only)

TASI TA642B/C Anemometer USB connection to PC for data analysis
The TA642B/C model connected via USB to a PC, demonstrating the real-time data sheet and chart display function for recorded measurements.

Connect the TA642B or TA642C to a PC using a USB cable. This allows for downloading recorded data, viewing real-time data sheets, and generating charts for analysis.

5.7 VA Color Screen

TASI Digital Anemometer telescopic handle and VA color screen
The telescopic handle design, featuring a 1m flexible stainless handle for extended reach. Also, a close-up of the VA color screen (53 x 44mm) with backlight, displaying measurement data.

The VA color screen (53 x 44mm) provides clear readings with a backlight for visibility in various lighting conditions.

6. Technical Specifications

TASI TA642 Series Digital Anemometer technical parameters table
A comprehensive table outlining the technical specifications for TA642A, TA642B, and TA642C models, including measurement method, air velocity range, accuracy, resolution, air temperature range, display, sensor type, sampling rate, data storage, USB connectivity, auto power off, operating/storage environment, product size, screen size, weight, and power requirements.
TASI TA642 Series Technical Parameters
Parameter TA642A TA642B TA642C
Measurement method Integral type (TA642A/B), Split type (TA642C)
Air velocity Range 0.06 ~ 45.0m/s
Accuracy ±(2% + 0.2)
Resolution 0.01 / 0.1
Air temperature Range 0 ~ 45°C (32.0 ~ 113.0°F)
Accuracy ±2°C (±3.6°F)
Resolution 0.1 / 1
Display 4 digits, max 9999
Sensor Infrared laser tube cutting method
Sampling rate 2 times/s
Repeated test deviation ±2%
Data storage 1000 groups
USB connection ✔ ✔
Auto power off 15 mins (can be disabled)
Working environment -10 ~ 50°C, max 80%RH, indoor altitude <2000m
Storage environment -10 ~ 50°C, max 70%RH (battery removed)
Product size 239 x 70 x 35mm 175 x 70 x 35mm
Screen size 53 x 44mm
Weight Approx. 210g (battery not included)
Power 3 x 1.5V AA (LR06) battery, USB micro interface 5V

7. Maintenance

  • Cleaning: Wipe the instrument with a dry, soft cloth. Do not use abrasive cleaners or solvents.
  • Storage: When not in use for extended periods, remove the batteries to prevent leakage. Store the instrument in a cool, dry place, away from direct sunlight and extreme temperatures.
  • Fan Blades: Keep the fan blades clean and free from dust or debris to ensure accurate readings.

8. Troubleshooting

Instrument does not power on:
Check if batteries are installed correctly and have sufficient charge. Replace batteries if necessary.
Inaccurate readings:
Ensure the fan blades are clean and unobstructed. Verify that the probe (TA642C) is securely connected. Check for stable environmental conditions.
USB connection not working (TA642B/C):
Ensure the USB cable is properly connected to both the anemometer and the PC. Check if the necessary drivers are installed on your computer.
Alarm not sounding:
Verify that the alarm limits are set correctly and that the measured value is indeed outside these limits.

9. User Tips

  • For consistent readings, ensure the anemometer's fan is positioned directly into the airflow.
  • When measuring air flow in ducts or vents, use the telescopic handle (TA642C) or position the integrated fan (TA642A/B) carefully to avoid turbulence from your hand.
  • Regularly check battery levels, especially before critical measurements, to avoid interruptions.
  • Utilize the data recording feature for long-term monitoring and trend analysis, especially with the PC connection for TA642B/C models.

10. Warranty and Support

TASI products are manufactured to high-quality standards. For warranty information or technical support, please refer to the documentation provided with your purchase or contact your retailer. Keep your purchase receipt as proof of purchase.