Operation
20
Rev. A1 Jan 2015
3i Plus
5.6
Display
The display retains the last infrared measurement for 20 s when the trigger is released and <HOLD> is
shown on the display. To hold the infrared temperature, release the trigger until <HOLD> shows on
the display.
5.7
Sighting
5.7.1
Dual Laser
All models use a dual laser method to show the measurement spot position and size. The two laser
points show the diameter of the spot circle, with the middle laser point as the center of the spot circle.
5.7.2
Red Dot Scope
The scope models for the Raynger 3i Plus series provide an additional red dot scope; the measurement
target can be seen through the scope. That aiming system can be used when the laser points are hard
to see due to the brightness of the target.
The scope's red dot shows the center of the measuring spot circle, which does not display on the real
object under measurement.
The intensity of the field sight can be adjusted by rotating the knob on the top of the instrument while
keeping the brightness of the red dot. This function is helpful for the user to clearly see the red dot
position when the instrument is measuring high-temperature objects.
If the scope's red dot does not match with the circle of the two laser points, use the following
adjustment method:
1.
Open the two circular rubber caps on the top of the unit, and the scope's two adjustable
screws are shown.
2.
Affix the unit to a tripod.
3.
Aim at a target 4 m (13 ft.) off in the distance, like a wall, for viewing the two lasers clearly.
4.
Adjust the two screws on the aiming scope to the center of the two laser points. Please try to
look straight through the aiming scope.
5.
Remove the unit from the tripod.
6.
Close the two circular rubber caps.
Warning: Please do not use the unit with the two rubber caps open, since unexpected contact with
the screws may introduce noise pulse to the units, resulting in noise readings or disorder of the
display
5.8
Temperature Records
The instrument can store measurement records, including time, date, emissivity, and measurement
record numbers. It can store 1,000 records for basic test data, 10 pcs trend display and 300 records for
profile.
The following types of data are available:
•
Basic test data:
Test data without a dedicated setting like profile. User can record random
measurement data in this area with a maximum 1,000 records.
•
Trend data
the data saved under trend mode which includes three screens of data with 360
test values. The data will be saved in a curve format and the user can review the value of each
test point with PC software. Press <View> to review the trend picture. User can press up and
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