In-situ hygrometer use precautions

Safety Precautions <br> Do not install, maintain or inspect the instrument until you have read this user manual and the attached materials carefully and can use them properly.
Be familiar with the knowledge, safety information and all relevant precautions of the instrument;
In this user manual, the safety level is divided into “dangerous” and “attention”.
A dangerous situation caused by incorrect operation will result in death or serious injury.
A dangerous situation caused by improper operation will result in general or minor injury or damage to the hardware of the object.
Note: Depending on the situation, the “attention” level may also have serious consequences.
Please follow the two levels of caution.
Prevent electric shock <br> Do not disassemble the instrument during power-on, otherwise there is danger of electric shock;
When performing maintenance or maintenance, please do not connect the working power supply to the instrument, otherwise there is danger of electric shock;
Please ensure that the instrument has a good grounding device;
Work including wiring or inspection should be performed by a professional technician;
Prevent fires <br> Do not install the meter next to flammable objects. Direct installation on or near flammable materials can cause a fire:
This instrument is not suitable for installation in flammable and explosive places and intrinsically safe requirements unless specifically requested by the user;
Install an air switch with overload or short circuit protection at the upper end of the external power supply lead-in line of the instrument. Otherwise, the short circuit of the power supply lead will cause a large current to pass, resulting in a fire:
Prevent damage <br> The voltage applied to each terminal can only be the voltage specified in the component manual.
Crack, damage, etc.
Make sure that the cable is connected to the correct terminal, otherwise it will burst, damage, etc.
Always ensure that the positive and negative polarities are correct to prevent bursting and damage.
Handling and installation <br> Do not place debris on the meter;
Prevent screws, cable fragments, or other electrical or oil flammable objects from entering the interior of the instrument;
Prevent the instrument from falling or being subjected to other strong impacts;
Please use in the following environment:
Ambient temperature -10°C~+50°C (no ice)
When using dustproof structure accessories, it is -10°C~+40°C
Ambient humidity 80% RH or less (no condensation)
Storage humidity -20°C~ +65°C (temperature that can be adapted in a short time during transportation)
Ambient humidity Indoor (no corrosive gases, flammable gases, oil mist or dust, etc.)
Altitude, vibration altitude below 1000 meters, 5. 9m/S ² {0.6G} or less

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