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FoodPro Plus
Users Manual
8
• 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
Measuring Liquid Temperatures
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