HTM-20N Series
HITROL CO., LTD.
11
Do not apply the Non Ex-proof product in an Ex-proof zone.
The Ex-proof product can be used where the environment and liquid inside the containers
are of zone 1 and 2
Safety and
Environment
Marking
User Training
The above matters shall be fully understood, and the temperature of fluids in the
container where the product is used shall not exceed 80℃ in the case of general
types and 120℃ in the case of high-temperature types. In addition, make sure that the
ambient temperature of housing is kept at -20℃ ~ +60℃. (However, C-Type sensor’s the
fluid temperature of the container is limited to 60℃.)
An Ex-proof product is a pressure-resistant and Ex-proof type, so never open the cover during
operation. Ex-proof products are designed according to Article 34 of the Industrial Safety and
Health Act and Article 58.4 of the Enforcement Rules of the same Act.
■ Precautions for Use
- Make sure to connect the product and vessel using required tools for sure.
- Keep the lock key safe and make sure that it is locked.
- Do not apply high impact to the product.
■ Precautions for Wiring
- Make sure to wire contacts correctly.
- Internal ground (inside product housing) and external ground shall be connected.
- Wire and supply the power to the product after checking the specifications.
- Incorrect power voltage may cause damage to the product.
- Pay attention to prevent electric shock.
■ Disposal of Product
- Make sure to separate the amplifier and main unit from housing before disposing
the products. Also, the amplifier shall be detached and discard the metal and non-
metallic materials. No part (ex. Mercury switch) has influence on the environment,
so no special attention is required.
■ Product Identification
- The product identification mark is attached onto the housing and shows the model name,
serial number, working temperature, working pressure, and matters regarding output. The
serial number is a unique manufacturing number for the identification of products.
