TEKCOPLUS ZRA-9034300 Dual Channel K/J Type Thermocouple Thermometer

1. Introduction

Thank you for choosing the TEKCOPLUS ZRA-9034300 Dual Channel K/J Type Thermocouple Thermometer. This device is designed for accurate and reliable temperature measurement across a wide range, suitable for HVAC, industrial, laboratory, and other applications. It features dual-channel input, high/low temperature alarms, and adjustable compensation for precise readings. Please read this manual thoroughly before operation to ensure proper use and to maintain the device's performance.

Image: The TEKCOPLUS K/J Thermometer in use, measuring the temperature of liquids in two glasses with connected probes.

2. Safety Information

To ensure safe operation and to prevent damage to the device, please observe the following safety precautions:

• Read all instructions carefully before using the thermometer.
• Do not expose the device to extreme temperatures, humidity, or direct sunlight.
• Avoid dropping or subjecting the device to severe impact.
• Do not attempt to open or modify the device. Refer all servicing to qualified personnel.
• Ensure probes are correctly connected before taking measurements.
• Keep the device and probes away from children.
• Always use the correct type of thermocouple (K or J) for your application.

3. Package Contents

Verify that all items listed below are present in your package:

• TEKCOPLUS K/J Thermometer Unit
• Stainless Steel K-Type Thermocouple Probes (2 pcs)
• Wired K-Type Thermocouple Probes (2 pcs)
• Carrying Pouch
• Instruction Manual
• AAA Batteries (3 pcs)

Image: The complete package contents including the thermometer, various probes, carrying pouch, and manual.

4. Product Overview

4.1 Device Layout

Image: Front panel of the thermometer with its buttons and display, highlighting the T1 and T2 channel ports, data hold/unit switch, Max/Min/Avg/backlight button, power button, and upper/lower limit setting buttons.

1. T1 Channel Port: Input for the first thermocouple probe.
2. T2 Channel Port: Input for the second thermocouple probe.
3. LCD Display: Shows temperature readings, settings, and indicators.
4. HOLD / UNIT / TYPE Button: Short press to hold data, long press to switch temperature units (°C/°F) or thermocouple type (K/J).
5. MAX / MIN / AVG / Backlight Button: Short press to cycle through Max, Min, Avg readings; long press to activate/deactivate backlight.
6. Power Button: Turns the device ON/OFF.
7. HI Button: Sets the upper temperature alarm limit.
8. ADJ Button: Activates adjustable compensation (calibration).
9. LOW Button: Sets the lower temperature alarm limit.

4.2 LCD Display Indicators

Image: Detailed diagram of the thermometer's LCD display, labeling various indicators such as maximum value, average value, minimum value, data hold, battery indicator, temperature units, and channel error settings.

• APO: Auto Power Off indicator.
• HOLD: Data Hold function active.
• MAX/MIN/AVG: Maximum, Minimum, or Average temperature displayed.
• Battery Indicator: Shows remaining battery life.
• T1/T2: Temperature readings for Channel 1 and Channel 2.
• °C/°F: Temperature unit indicator.
• HI/LOW: High/Low alarm active or triggered.
• ADJ: Compensation value applied.
• T1-T2: Differential temperature reading.

5. Setup

5.1 Battery Installation

1. Locate the battery compartment on the back of the device.
2. Open the battery cover.
3. Insert three (3) AAA batteries, ensuring correct polarity (+/-).
4. Close the battery cover securely.

5.2 Connecting Thermocouple Probes

1. Identify the desired thermocouple probe (K-type stainless steel or K-type wired).
2. Insert the probe's connector into either the T1 or T2 channel port on top of the thermometer. Ensure a firm connection.
3. For dual-channel measurement, connect a second probe to the remaining port.
4. The thermometer supports both K and J type thermocouples. The default type is K. To switch to J type, long press the HOLD / UNIT / TYPE button.

Image: The main thermometer unit displayed with the included stainless steel K-type thermocouple probes and wired K-type thermocouple probes, showing their different designs and measurement ranges.

6. Operating Instructions

6.1 Power On/Off

• Press the Power button () to turn the thermometer ON.
• Press and hold the Power button for approximately 2 seconds to turn the thermometer OFF.

6.2 Basic Temperature Measurement

• After powering on, the display will show the current temperature readings for T1 and T2 (if two probes are connected).
• The differential temperature (T1-T2 or T2-T1) can also be displayed.
• Place the probe tips into the substance or area you wish to measure. Allow a few moments for the reading to stabilize.

6.3 Switching Temperature Units (°C/°F) and Thermocouple Type (K/J)

• To switch between Celsius (°C) and Fahrenheit (°F), press and hold the HOLD / UNIT / TYPE button until the unit changes.
• To switch between K-type and J-type thermocouples, press and hold the HOLD / UNIT / TYPE button until the type changes.

6.4 Data Hold Function

• Press the HOLD / UNIT / TYPE button briefly to freeze the current temperature readings on the display. The "HOLD" indicator will appear.
• Press the button again to release the hold and resume live readings.

6.5 MAX/MIN/AVG Function

• Press the MAX / MIN / AVG / Backlight button briefly to cycle through the maximum (MAX), minimum (MIN), and average (AVG) temperature readings recorded since the device was powered on or the function was reset.
• To reset the MAX/MIN/AVG values, press and hold the MAX / MIN / AVG / Backlight button until the display clears and restarts recording.

6.6 High/Low Temperature Alarm Setting

The thermometer features a high and low temperature alarm. When the measured temperature exceeds the set high limit or falls below the set low limit, a red backlight will flash, and an audible alarm may sound (if enabled).

Image: Close-up image of the thermometer's display showing a red backlight and 'Hi' alarm indicator, signifying a high temperature alert.

1. Press the HI button to set the high temperature alarm limit. Use the up/down arrows (often integrated with other buttons, refer to device layout) to adjust the value. Press HI again to confirm.
2. Press the LOW button to set the low temperature alarm limit. Adjust the value and press LOW again to confirm.
3. To disable the alarm, set the HI limit to its maximum value or the LOW limit to its minimum value, or refer to specific instructions for disabling.

6.7 ADJ Compensation (Calibration)

This function allows for fine-tuning the temperature readings to compensate for minor discrepancies or to match a known reference. The adjustable compensation range is typically -9 to 9 °C (15.8 to 48.2 °F).

• To enter ADJ compensation mode, press and hold the HI and LOW buttons simultaneously.
• Use the up/down arrows (often integrated with other buttons) to adjust the compensation value.
• Press the ADJ button to confirm and exit the compensation setting.

6.8 Auto Power Off (APO)

The device is equipped with an Auto Power Off function to conserve battery life. If no buttons are pressed for a certain period (e.g., 10-15 minutes), the thermometer will automatically shut down. The "APO" indicator on the display signifies this function is active.

• To disable APO, refer to specific instructions in the full manual, as this often involves a button combination during power-on.

7. Maintenance

7.1 Cleaning

• Wipe the device casing with a soft, damp cloth. Do not use abrasive cleaners or solvents.
• Clean thermocouple probes with appropriate cleaning agents, ensuring they are dry before storage or next use.

7.2 Storage

• When not in use for extended periods, remove the batteries to prevent leakage.
• Store the thermometer and probes in the provided carrying pouch in a cool, dry place, away from direct sunlight and extreme temperatures.

8. Troubleshooting

9. Specifications

Image: The thermometer's compact design, illustrating its dimensions (15.2 cm length, 5.5 cm width) and weight (580g).

Note: Specifications are subject to change without prior notice.

10. Warranty and Support

TEKCOPLUS products are manufactured to high-quality standards. For warranty information, technical support, or service inquiries, please refer to the contact details provided on the product packaging or visit the official TEKCOPLUS website. Please retain your purchase receipt as proof of purchase.

For further assistance, please contact customer support.