1. Introduction
The TRACEABLE Jumbo Calibrated Digital Fridge/Freezer Thermometer (Model AO-94460-73) is designed for precise temperature monitoring in refrigerators, freezers, water baths, heating blocks, and incubators. This device simultaneously displays current, minimum, and maximum temperatures, offering a comprehensive overview of environmental conditions. Its built-in memory stores temperature data, and programmable alarms provide alerts for critical temperature deviations.
Key Features:
- Simultaneous display of current, minimum, and maximum temperatures.
- Built-in memory for tracking temperature conditions over time.
- Precise high and low temperature alarms, adjustable in 1° increments.
- Submersible temperature probe with a 10-ft (3-m) micro-cable.
- Multiple mounting options: hook-and-loop strips, wall-mount slots, or flip-open stand.
- NIST-traceable calibration certificate included.
2. Package Contents
Verify that all items listed below are present and in good condition:
- TRACEABLE Jumbo Calibrated Digital Fridge/Freezer Thermometer (Model AO-94460-73)
- 1 5-mL Bottle Probe (submersible)
- NIST-traceable calibration certificate with data
- Hook-and-loop strips for mounting
- Magnetic strips for mounting
- One AAA alkaline battery
3. Setup
3.1. Battery Installation
- Locate the battery compartment on the back of the unit.
- Remove the battery compartment cover.
- Insert the supplied AAA alkaline battery, ensuring correct polarity (+/-).
- Replace the battery compartment cover securely.
3.2. Probe Placement
The bottle probe is designed to buffer rapid temperature changes, providing a more stable and accurate reading of the stored contents. The 10-ft (3-m) micro-cable allows the probe to be placed inside the monitored environment while the main unit remains outside.
- Place the bottle probe inside the refrigerator, freezer, or other environment where temperature monitoring is required. Ensure the probe is positioned to accurately reflect the temperature of the items being stored.
- The micro-cable is thin enough to allow refrigerator or freezer doors to close without damaging the cable or compromising the seal.
Image: A person placing a bottle probe inside a refrigerator, demonstrating proper probe placement.
3.3. Mounting the Main Unit
The main thermometer unit can be mounted in several ways:
- Hook-and-Loop Strips: Attach the adhesive-backed hook-and-loop strips to the back of the unit and a clean, flat surface (e.g., side of a refrigerator, wall).
- Magnetic Strips: Use the magnetic strips for attachment to metallic surfaces.
- Wall-Mount Slots: Utilize the integrated slots on the back of the unit to hang it on screws or hooks.
- Flip-Open Stand: For benchtop use, extend the integrated stand on the back of the unit.
Image: A hand pressing a button on the TRACEABLE thermometer, which is mounted on the exterior of a refrigerator.
4. Operating Instructions
4.1. Power On/Off
The unit powers on automatically upon battery installation. There is no dedicated power button. To turn off, remove the battery.
4.2. Reading Temperatures
The large LCD display shows three temperature readings simultaneously:
- Current Temperature: The real-time temperature measured by the probe.
- Minimum Temperature (MIN): The lowest temperature recorded since the last reset.
- Maximum Temperature (MAX): The highest temperature recorded since the last reset.
4.3. Switching Temperature Units (°F/°C)
Press the °F/°C button (if available, or a similar labeled button) to toggle between Fahrenheit and Celsius temperature scales.
4.4. Viewing and Clearing Min/Max Memory
The thermometer automatically records the minimum and maximum temperatures reached since the last memory reset. These values are continuously displayed.
- To clear the MIN/MAX memory and begin a new recording cycle, press the CLEAR button. The display will show the current temperature for MIN and MAX until new minimum and maximum values are recorded.
4.5. Setting Alarms
The thermometer features programmable high and low temperature alarms. An alarm will sound when the temperature exceeds the high set point or falls below the low set point. The alarm continues to sound even if the temperature returns to the non-alarm range until acknowledged.
- Press the SET button to enter alarm setting mode.
- Use the UP and DOWN arrow buttons to adjust the desired high temperature alarm limit.
- Press SET again to confirm the high limit and proceed to set the low temperature alarm limit.
- Use the UP and DOWN arrow buttons to adjust the desired low temperature alarm limit.
- Press SET a third time to exit alarm setting mode and save the settings.
- To enable or disable the alarm, press the ALARM ON/OFF button. An alarm icon will typically appear on the display when the alarm is active.
- To silence a sounding alarm, press any button. The alarm will reactivate if the temperature remains outside the set limits.
5. Maintenance
5.1. Cleaning
Regular cleaning helps maintain the accuracy and longevity of your thermometer.
- Wipe the main unit and probe with a damp cloth. A mild soap solution can be used if necessary.
- Do not use abrasive cleaners or solvents, as these may damage the plastic casing or display.
- Ensure the main unit does not get wet, as it is not waterproof. The probe is submersible.
5.2. Battery Replacement
When the display becomes dim or the unit stops functioning, it is time to replace the battery. Refer to Section 3.1 for battery installation instructions.
5.3. Probe Care
The bottle probe is designed for durability. Avoid sharp bends or kinks in the cable, which could damage the internal wiring. The probe is freezer safe and can remain in the monitored environment continuously.
6. Troubleshooting
If your thermometer is not functioning as expected, please refer to the following common issues and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| No display or dim display | Dead or improperly installed battery | Replace the AAA battery, ensuring correct polarity. |
| Incorrect temperature readings | Probe not properly placed or damaged | Ensure the probe is fully immersed or correctly positioned. Inspect the probe and cable for damage. |
| Alarm not sounding | Alarm disabled or settings incorrect | Verify that the alarm is enabled (check for alarm icon) and that high/low limits are set appropriately. |
| MIN/MAX values not resetting | CLEAR button not pressed | Press the CLEAR button to reset the memory. |
7. Specifications
| Feature | Detail |
|---|---|
| Model Number | AO-94460-73 |
| Temperature Range | −58 to 158°F (–50 to 70°C) |
| Resolution | 0.1° |
| Accuracy | ±1°C |
| Probe Cable Length | 10 ft (3 m) micro-cable |
| Power Source | 1 x AAA alkaline battery |
| Display Type | Digital LCD |
| Special Feature | High Accuracy, NIST-traceable calibration |
| Product Care Instructions | Freezer Safe (probe) |
| Mounting Options | Hook-and-loop, Magnetic, Wall-mount, Benchtop stand |
8. Warranty
This TRACEABLE product is warranted to be free from defects in material and workmanship for a period of one year from the date of purchase. This warranty does not cover damage caused by accident, misuse, abuse, alteration, or improper operation. If service is required during the warranty period, please contact customer support.
9. Customer Support
For technical assistance, warranty claims, or general inquiries, please contact TRACEABLE customer support. Refer to the contact information provided with your purchase documentation or visit the official TRACEABLE website for the most up-to-date support details.
Online Resources:
- Visit the TRACEABLE website for product information, FAQs, and additional resources.
