Model UT300 : USERS MANUAL
2
Button / Connector
Description
/
Press to toggle between Celsius and Fahrenheit
MAX/MIN
Press to toggle between MAX and MIN options. MAX and
MIN values are displayed on the secondary display.
/
Press to toggle between turning on the laser and display
backlight.
The sequence is:
,
,
,
none.
Locating a Hot or Cold Spot
To find a hot or cold spot, aim the Thermometer outside the target area. Then, slowly scan across the area with an up and down motion until you located the hot or cold spot.
See Figure 5.
Distance and Spot Size
As the distance (D) from the target being measured increases, the spot size (S) of the area measured by the unit becomes larger. The spot size indicates 90% encircled
energy. The maximum D:S is obtained when the Thermometer is 1000mm (100 in) form the target resulting in a spot size of 20mm (2 in).
Field of View
Make sure that the target is larger than the spot size. The smaller the target, the closer you should be to it. Suggested distance less than 75% of the theory value.
Emissivity
Emissivity describes the energy-emitting characteristics of materials. Most organic materials and painted or oxidized surfaces have an emissivity of about 0.95.
If possible, to compensate for inaccurate readings that may result from measuring shiny metal surfaces, cover the surface to be measured with masking tape or flat black paint
(<150 / 302 ) and use the high emissivity setting. Allow time for the tape or paint to reach the same temperatures as the surface beneath it. Measure the temperature of
the tape or painted surface.
Maintenance
Changing the Battery
To install or change the 9V battery, open the battery compartment the battery.
Cleaning the Lens
Blow off loose particles using clean compressed air. Carefully wipe the surface with a moist cotton swab. The swab may be moistened with water.
Cleaning the Housing
Use soap and water on a damp sponge or soft cloth. To avoid damage to the Thermometer, do not soak the unit into water.
Caution
To avoid damaging the Thermometer, do NOT submerge it in water.
Troubleshooting
Symptom Problem
Action
OL (on display)
Target temperature is over range
Select target with specifications
-OL (on display)
Target temperature is under range
Select target with specifications
Low Battery
Replace Battery
Blank Display
Possible dead battery
Check and / or replace battery
Laser does not work
z
Low or dead battery
z
Ambient temperature above 40 (104 )
z
Replace
battery
z
Use in area with lower
ambient temperature.
CE Certification
The Thermometer conforms to the following standards:
