KYOWA WGA-120A Instruction Manual page 10

Storage and usage in gases
Do not use/store the WGA-120A in inflammable gases, explosive gases, or vapor. Using the WGA-120A
under the above environment is too risky.
External connection
To prevent electric shock hazards, be sure to connect the GND terminal to the ground before connecting
the object to be measured and external control circuit to the product.
Terminal cover
Be sure to put a terminal cover on the terminal block. Or, electric shock hazard may result.
-5-