1. Introduction
This manual provides instructions for the safe and effective operation of the TASI TA500 series digital tachometer. The TA500 series includes models TA500A, TA500B, and TA500C, offering versatile measurement capabilities for rotational speed and linear speed in various industrial and automotive applications.
The device is designed for reliable and simple operation, making it an essential tool for professionals, engineers, and maintenance personnel.
2. Safety Information
Please read all safety warnings and instructions carefully before using the device to ensure safe operation and to prevent damage to the instrument or injury to yourself.
- Always operate the device within its specified environmental conditions.
- Do not attempt to disassemble or modify the device.
- Ensure batteries are inserted correctly and replaced when low to avoid inaccurate readings or device malfunction.
- When using non-contact measurement, be aware of the laser beam and avoid direct eye exposure.
- Keep the device clean and dry.
3. Package Contents
Upon opening the package, verify that all items are present and undamaged. If any items are missing or damaged, please contact your supplier.
- Digital Tachometer (TA500A, TA500B, or TA500C model)
- User Manual
- Reflective Tape (2 pieces, included with TA500C)
- Measuring Accessories (for contact measurement, included with TA500B/C)
4. Device Overview
Familiarize yourself with the components and controls of your digital tachometer.
4.1. Key Components
- LCD Screen: Displays measurement readings, mode, battery level, and other indicators.
- Backlight: Illuminates the screen for visibility in low-light conditions.
- UNIT Button: (Not available on TA500A) Used to switch between measurement units (e.g., RPM, ft/m, m/min).
- TEST Button: Initiates the measurement process.
- MAX/MIN Button: Toggles between maximum and minimum recorded values.
- Power Button: Turns the device on and off.
- HOLD Button: Freezes the current reading on the display.
5. Setup
5.1. Battery Installation
The tachometer requires 2 x 1.5V AAA (R03/LR03) batteries (not included). Follow these steps to install them:
- Locate the battery compartment cover on the back of the device.
- Slide or unclip the cover to open it.
- Insert two AAA batteries, ensuring correct polarity (+ and -).
- Close the battery compartment cover securely.
6. Operating Instructions
6.1. Power On/Off
- Press the Power button (red circle with line) to turn the device ON.
- Press and hold the Power button to turn the device OFF.
- The device features an automatic shutdown function after 15 minutes of inactivity to conserve battery life. This function can typically be disabled if needed (refer to the full user manual for specific steps).
6.2. Non-Contact Measurement (TA500A, TA500C)
This method uses an infrared beam to measure rotational speed without physical contact.
- Ensure the target object has a reflective surface or apply the provided reflective tape (for TA500C) to the rotating part.
- Press the TEST button to activate the infrared beam.
- Aim the laser point perpendicularly at the rotating reflective strip.
- Maintain an effective distance between 50mm and 500mm from the target.
- The RPM reading will be displayed on the LCD screen.
6.3. Contact Measurement (TA500B, TA500C)
This method uses physical contact with the rotating object to measure speed.
- Attach the appropriate measuring accessory (e.g., cone or wheel) to the tachometer's contact shaft.
- Press the UNIT key to select the desired measurement mode (e.g., RPM, ft/m, m/min). The default mode is typically RPM.
- Press the TEST button. The measurement symbol (e.g., "RPM" or "ft/m") on the display screen will flash.
- Gently press the measuring accessory against the center of the rotating object.
- The speed reading will be displayed on the LCD screen.
6.4. Data Hold Function
To freeze the current measurement on the display:
- Press the HOLD button during measurement. The reading will be held.
- Press the HOLD button again to release the hold and resume live measurement.
6.5. Maximum/Minimum Value Measurement
To view the maximum or minimum recorded values during a measurement session:
- Press the MAX/MIN button once to display the maximum value.
- Press the MAX/MIN button again to display the minimum value.
- Press the MAX/MIN button a third time to return to live measurement.
7. Maintenance
7.1. Cleaning
- Wipe the device with a soft, dry cloth.
- Do not use abrasive cleaners or solvents.
- Keep the sensor area clean and free from dust or debris to ensure accurate readings.
7.2. Battery Replacement
When the battery indicator on the LCD screen shows low power, replace the batteries promptly to avoid interruption of operation or inaccurate readings. Refer to Section 5.1 for battery installation instructions.
7.3. Storage
- If the device will not be used for an extended period, remove the batteries to prevent leakage.
- Store the tachometer in a cool, dry place, away from direct sunlight and extreme temperatures.
- The recommended storage environment is -10 to 50°C with a maximum 70% RH (battery removed).
8. Troubleshooting
- No display or weak display: Check battery level and replace if necessary. Ensure batteries are inserted with correct polarity.
- Inaccurate readings (non-contact): Ensure the reflective tape is properly applied and clean. Verify the measurement distance is within 50-500mm. Ensure the laser is aimed perpendicularly at the target.
- Inaccurate readings (contact): Ensure the measuring accessory is securely attached and making firm contact with the rotating surface. Check for any wear or damage to the accessory.
- Device does not respond: Try turning the device off and on again. If the issue persists, replace the batteries.
9. Specifications
The following table details the technical specifications for the TASI TA500 series digital tachometers:
| Parameter | TA500A | TA500B | TA500C |
|---|---|---|---|
| Measurement Type | Non-contact type | Contact type | Non-contact type / Contact type |
| Range | 3-100000RPM | 3-19999RPM 0-1999.9m/min 0-9999.9ft/min | Non-contact type: 3-100000RPM Contact type: 3-19999RPM 0-1999.9m/min 0-9999.9ft/min |
| Accuracy | ±(0.05%FS+1RPM) | ±(0.1%FS+0.2M/min) ±(0.1%FS+0.6ft/min) | Non-contact type: ±(0.05%FS+1RPM) Contact type: ±(0.1%FS+0.2M/min) ±(0.1%FS+0.6ft/min) |
| Resolution | RPM: <10000: 0.1 RPM: ≥10000: 1 | RPM: <10000: 0.1 RPM: ≥10000: 1 m/min: <2000: 0.1 ft/min: <10000: 0.1 | RPM: <10000: 0.1 RPM: ≥10000: 1 m/min: <2000: 0.1 ft/min: <10000: 0.1 |
| Display | 6 digits, max 99999 | ||
| Effective Measuring Distance | 50mm - 500mm | ||
| Sampling Time | 0.8s (above 60rpm) | ||
| Auto Power Off | 15mins (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 | 130x59x29mm | 146x59x29mm | 146x59x29mm |
| Weight | Approx. 110g (battery not included) | Approx. 117g | Approx. 120g |
| Power | 2 x 1.5V AAA (R03/LR03) | ||
10. User Tips
- For consistent non-contact measurements, ensure the reflective tape is applied smoothly and securely to the rotating surface.
- When performing contact measurements, apply gentle, consistent pressure to avoid slowing down the rotating object or causing slippage, which can affect accuracy.
- Always check the battery level before critical measurements to ensure uninterrupted operation.
- The auto power-off feature is useful for battery saving, but remember to disable it if you need continuous monitoring without interaction.
11. Warranty and Support
For any issues, technical support, or warranty claims, please contact the seller or manufacturer directly. Keep your purchase receipt as proof of purchase.
Manufacturer: Suzhou TASI Electronics Co. Ltd
12. Product Demonstration Video
Watch this video for a visual guide on the features and operation of the TASI Digital Tachometer.
