12
11
The HACCP Check indicators operate in both
the Noncontact and Contact modes. The indica-
tor light will flash during an active measure-
ment and will be lit steadily during display
Hold or Recall
(Figure 5)
.
• A Green LED indicator shows a safe chilled or
frozen condition below 40ºF (4ºC) or a safe
holding temperature above 140ºF (60ºC).
• The Red LED indicator light is displayed when
temperatures are within the HACCP “Danger
Zone” of 40ºF to 140ºF (4ºC to 60ºC) where
microbe growth occurs most rapidly
(Figure 7)
.
Note:
When the temperatures within ±2°F
(±1°C) of the HACCP “Danger Zone” boundary,
both the relevant Green and Red LED indicator
lights will be triggered to alert the user of the bor-
der temperature.
Note:
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.
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 noncon-
tact mode. Steam, dust, smoke, etc., can pre-
vent 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 8)
.
Measuring Packaged Products
in Cold Storage Cases
Ideally, the temperature of a product should
be measured outside of a refrigerated environ-
ment whenever possible. If it is necessary to
measure the product in a refrigerated environ-
ment such as a walk-in cooler, either make
rapid measurements (within 1 minute or less)
or allow 30 minutes for the unit to stabilize in
the refrigerated environment (above 32°F/0°C)
before measuring. To measure an item within a
storage case, open the door or curtain, and
directly scan the product for uniform tempera-
tures. The presence of warmer areas may indi-
cate improper stocking resulting in blocked air-
flow in the cabinet.
(Figure 9)
.
Note:
The unit will not measure through glass
or plastic doors.
Green
Green
Red
Figure 7
Zone Measurement Map
Figure 8
Noncontact Temperature Measurement Applications
Figure 9
