3. Field of view: Be sure the target area is larger than the unit’s spot. The smaller the
target area, the closer the distance between unit and target. However, if you want to have an
accurate temperature of an object, be sure that the target is twice as large as the measuring
area.
●
Operation Notes
1. Leave no glass, plastic or water vapor etc. between the unit and target.
2. Keep the product away from the following places to reduce the risk of damaging the device:
A, Environment with vapor and dust;
B, EMF places
（
Electro-magnetic fields: such as arc welding machine, induction heaters
）
;
C, Static environment;
D, Heat shock (caused by abrupt temperature changes, allow 30 minutes for unit to stabilize
before use in such circumstance);
E, Stay away from high temperature objects;
●
Trouble Shooting
Problems Causes
Possible
Solution
no display
Dead battery
Check and replace battery.
“ ” appears
Low battery
Replace battery
“OL—” appears
The target temperature
is lower than the range
Choose target within the
functional range
“OH” appears
The target temperature
is higher than the range
Choose target within the
functional range
①
Not suitable object or
view field.
Choose proper field of view.
①
readings are
inaccurate
Wrong
②
emissivity
setting.
②
choose proper emissivity value
5
