** If the surface is metallic, be sure to mark it as described in the
Measurement Tips section in Chapter Three.
2.4.3 High Temperature Targets
When using the DX™ to measure high temperature targets, above
100 °F, quickly touch the target's surface -- one second is long
enough to get an accurate reading.
Follow the procedures described above under 2.4.1 General
Operation (see pg. 5). If the DX makes contact with a hot surface for
an extended time (10 seconds or more) the target will conduct heat.
Although this will not harm the unit, the indicated temperature may be
a few degrees too high. Allow a few minutes between readings for
the nosepiece to cool down and stabilize.
If the DX makes contact with a hot surface and an error message [HI]
shows on the display remove the instrument from the object immediately.
2.5 MAX Mode Temperature Measurements
Use this measurement mode when making contact with the target or
when the target is large. The DX is a wide-angle thermal scanner
with a fixed emissivity of 0.9. The target's temperature is continuous-
ly displayed and updated 10 times per second for as long as you hold
the MEASURE button down.
The DX displays the average temperature of everything within the
sensor's field of view measurement area. The size of the measuring
area depends on the distance of the device from the target. The DX
has a 1:1 field of view, which means that this unit will measure a 1"
diameter target area when the device is 1" from the target.
2.5.1 General Operation
For continuous temperature measurement of a target or for tempera-
ture measurement at a distance, use the following procedure.
1.
Determine the appropriate measurement distance from your
desired target. Best measurements are made when the AECS
cup is in contact with the target.
2.
Make sure the MODE switch is on MAX.
3.
Point the nosepiece at the target.
4.
Press and hold the MEASURE button.
5.
Record the temperature from the display.
6.
Release the MEASURE button. The last reading will remain
locked on the display for 10 seconds after releasing the button.
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