Measuring Liquid Temperatures

FoodPro Plus

Users Manual

•A Green LED indicator shows a safe chilled or frozen condition below 4 °C (40 °F) or a safe holding temperature above 60 °C (140 °F).

•The Red LED indicator light is displayed when temperatures are within the HACCP “Danger Zone” of 4 °C to 60 °C (39 °F to 140 °F) where microbe growth occurs most rapidly (Figure 5).

Notes

When the temperatures within ±1 °C (±2 °F) of the HACCP “Danger Zone” boundary, both the relevant Green and Red LED indicator lights will be triggered to alert the user of the border temperature.

Whenever the Red LED indicator light is lit it is necessary to evaluate the safe storage and handling rules dictated by both exposure time and temperature.

Noncontact Temperature Measurement Applications

To accurately measure the temperature of liquids and semi-liquids, such as soup, chili, salad dressing, etc., stir the liquid to bring the internal temperature to the surface, while taking a measurement with the unit in noncontact mode. Steam, dust, smoke, etc., can prevent accurate measurement by interfering with the energy emitted from the target. To increase the reliability of the measurement, do not hold the unit directly over a steaming or smoking product. Instead, hold the unit back and at an angle to ensure the most accurate measurement (Figure 6).

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Figure 6. Measuring Liquid Temperatures

Measuring Packaged Products in Cold Storage Cases

Ideally, the temperature of a product should be measured outside of a refrigerated environment whenever possible. If it is necessary to measure