1. Check the measurement object. Measurement cannot be guaranteed
under the conditions of forehead blowing, dripping, sweating, applying
cosmetics, etc.
2. Check the temperature offset setting, factory set to 0.0.
3. Check the operating environment. Environmental change has great
influence on measurement.
4. If the ambient temperature changes too much, or the ultra-high
temperature object is directly transferred to the low temperature object,
the measurement difference will occur. It should be used in a relatively
stable environment after 10 minutes of storage to obtain a new test heat
balance.
5. Check the measurement distance (3-5cm).
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