General Tools and Instruments DTH184DL - Manual (Page 19)

TM-184
27. Maintenance
Do not use the meter in an environment with severe change; do not store the unit in
an environment with high temperature, high humidity, and high vibration
Take battery out if the meter has not been used for a long period of time
The Diode temperature probe is used to measure temperature and the capacitive
humidity sensor is used to measure humidity
The thermocouple and humidity sensor will start aging under the influence of
oxidation, reduction, corrosion, pollution, vaporization, diffusion or other metallurgy.
The aging process will affect its precision seriously.
Cleaning and inspection of temperature probe:
The smoke, coal, dust, grease attached on the protective tube of temperature
probe will slow down the heat conduction of the thermocouple and cause
measuring error. Therefore, it should be cleaned periodically. The metal coating of
thin thermocouple should be replaced properly upon the occurrence of corrosion.
Cleaning and inspection of humidity sensor:
The smoke and dust attached on the humidity sensor will slow down the function of
humidity sensor and cause measuring error. Therefore, it should be cleaned
periodically. Blow off the dust with mild compressed air instead of water or alcohol.
The aluminum plate inside the humidity sensor should be replaced upon the
occurrence of corrosion.
28. End of life
Caution: this symbol indicates that equipment and its accessories should be subject to a
separate collection and correct disposal
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