1. Introduction
The TASI TA612C series is a range of handheld digital K/J-type thermocouple thermometers designed for accurate temperature measurement. These devices feature a VA digital color display, data hold function, MAX/MIN value tracking, data storage capabilities, an alarm buzzer, and an auto-shutdown feature for convenient and easy use. The series includes single-channel (TA612A), dual-channel (TA612B), and four-channel (TA612C) models to suit various measurement needs.
2. Product Overview
2.1 Panel Introduction
2.2 Display Introduction (TA612A/B)
2.3 Optional Models
3. Setup
3.1 Battery Installation
- Ensure the device is powered off.
- Locate the battery compartment on the back of the device.
- Open the battery compartment cover.
- Insert 3 x AA/LR06 batteries, observing correct polarity.
- Close the battery compartment cover securely.
3.2 Probe Connection
- Identify the K-type thermocouple probe inputs at the top of the device.
- Carefully insert the K-type thermocouple probe(s) into the corresponding jacks (T1, T2, T3, T4). Ensure a secure connection.
- The TA612C model supports up to four K/J-type probes simultaneously.
4. Operating Instructions
4.1 Power On/Off
- Press the Power button () to turn the device on.
- Press and hold the Power button to turn the device off.
- The device features an automatic shutdown after approximately 15 minutes of inactivity to conserve battery life. This can be manually overridden.
4.2 Temperature Measurement
- After connecting the probe(s) and powering on, the device will display real-time temperature readings.
- Insert the K-type probe into the substance or environment you wish to measure.
- Read the temperature displayed on the VA color screen.
4.3 Unit Switching (°C/°F)
- Press the °C/°F button to toggle between Celsius and Fahrenheit temperature units.
4.4 Data Hold
- Press the REC > 2s HOLD button briefly to freeze the current display reading. The 'HOLD' indicator will appear on the screen.
- Press the button again to release the data hold and resume real-time measurement.
4.5 MAX/MIN Value Tracking
- Press the MAX/MIN button to cycle through maximum, minimum, and current temperature readings.
- The 'MAX' or 'MIN' indicator will appear on the screen to denote the displayed value.
4.6 Alarm Function
- The device has default high (1300℃) and low (-200℃) alarm limits.
- When the measured temperature exceeds these limits, a sound and light alarm will activate.
4.7 Data Storage
- The TA612A/B models can store up to 9999 groups of thermocouple channel temperature values.
- The TA612C model can store up to 5000 groups of thermocouple channel temperature values.
- Note: Ambient temperature data storage is not supported.
4.8 Data Upload and Real-time Measurement (TA612C Only)
- The TA612C model is equipped with a USB interface for data upload and real-time measurement.
- Connect the device to a computer using the provided USB cable.
- Use the dedicated software (if provided by the manufacturer) to access stored data and view real-time measurements on your computer.
4.9 Probe Error Range Compensation (ADJ)
- The device supports -9~9℃ probe error range compensation.
- Long press the ADJ > 2s TYPE button to access the electronic compensation settings for K/J type probes. Refer to the full manual for detailed calibration procedures.
5. Maintenance
5.1 Cleaning
- Wipe the device with a soft, dry cloth. Do not use abrasive cleaners or solvents.
- Ensure the probe inputs are free from dust and debris.
5.2 Battery Replacement
- Replace batteries when the low battery indicator appears on the display.
- Follow the battery installation steps in Section 3.1.
5.3 Storage
- Store the device in a cool, dry place, away from direct sunlight and extreme temperatures.
- If storing for extended periods, remove the batteries to prevent leakage.
- Use the provided storage bag to protect the thermometer and probes.
6. Troubleshooting
- No Display/Device Not Turning On: Check battery installation and ensure batteries are not depleted. Replace if necessary.
- Inaccurate Readings: Ensure probes are correctly inserted and are the appropriate K/J type. Check for probe damage. Consider performing ADJ compensation if needed.
- Alarm Constantly Triggering: Verify the temperature being measured is within the expected range. The default high limit is 1300℃ and low limit is -200℃.
- Data Storage Issues: Ensure the device has sufficient memory. For TA612C, ensure proper USB connection and software operation for data upload.
7. Specifications
| Parameter | TA612A | TA612B | TA612C |
|---|---|---|---|
| Type | K/J type: -200°C to +1372°C / -328°F to +2501°F (Max measurement range, but still depends on different probe range) | ||
| Resolution | (-99°C ~ 999.9°C) 0.1°C/°F (-100°C ~ -200°C, ≥1000°C) 1°C/°F | ||
| Accuracy | ±0.2%+0.7°C | ||
| Higher limit alarm | The default value is 1300°C | ||
| Lower limit alarm | The default value is -200°C | ||
| ADJ compensation | -9 ~ +9°C Probe error range compensation | ||
| Type | Single-channel | Dual-channel | Four-channel |
| Data storage | 9999 groups | 5000 groups | |
| Data upload | - | √ | |
| Record time | Maximum 99H from REC start | ||
| Record duration | H: M/M: S | ||
| Working temp./hum. | 0°C ~ 40°C / 20 ~ 90%RH | ||
| Bracket nut | 1/4 inch nut | ||
| Storage Temp./hum. | -10°C ~ 50°C / 20 ~ 90%RH | ||
| Sampling rate | About 1 time /s | ||
| Auto power off | After 15mins without operation | ||
| Power | 3 * AA/ LR06 Battery (NOT included) or USB 5V 1A (C only) | ||
| Size | 177x70x35mm | ||
| Weight | 189g (Battery not included) | ||
| Standard Type K Thermocouple | Range: -50 ~ 300°C (accuracy ± 1.5%) TA612A (1 PCS), TA612B (2 PCS), TA612C (4 PCS) | ||
8. User Tips
- For optimal accuracy, allow the thermometer and probe to stabilize at the measurement environment's temperature before taking readings.
- When measuring extreme temperatures, ensure the probes are rated for the intended range to prevent damage.
- Regularly check the battery level, especially before critical measurements, to avoid interruptions.
- If using the TA612C for data logging, ensure your computer's operating system is compatible with the provided software for seamless data transfer and analysis.
9. Warranty and Support
This product is manufactured under strict quality control standards. For any technical assistance, troubleshooting beyond this manual, or warranty inquiries, please contact the retailer or manufacturer's customer support. Keep your purchase receipt as proof of purchase.
