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IM 19C01B05-01EN
2nd Edition : Jul. 06, 2021-00
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Safety Precautions
WARNING
Installation and wiring
The PG400 should only be used with equipment that meets the relevant IEC, American or
Canadian standards. Yokogawa accepts no responsibility for the misuse of this unit.
Don’t install “general purpose type” instruments in the hazardous area.
Do not use an abrasive or organic solvent in cleaning the instrument.
Electrostatic discharge
The PG400 contains devices that can be damaged by electrostatic discharge. When servicing this
equipment, please observe proper procedures to prevent such damage. Replacement components
should be shipped in conductive packaging. Repair work should be done at grounded workstations
using grounded soldering irons and wrist straps to avoid electrostatic discharge.
CAUTION
The Instrument is packed carefully with shock absorbing materials, nevertheless, the instrument
may be damaged or broken if subjected to strong shock, such as if the instrument is dropped.
Handle with care.
This instrument is EN61326-1 Class A product, and it is designed for use in the industrial
environment. Please use this instrument in the industrial environment only. When you open the
front cover, make sure the screws are completely out of the screw holes, and then open the front
cover slowly in order not to damage the threaded parts on the housing. If the threaded parts are
damaged and the screws cannot be tightened, the waterproof performance will deteriorate.
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Safety, Protection, and Modification of the Product
• In order to protect the system controlled by the product and the product itself and ensure
safe operation, observe the safety precautions described in this user’s manual. We assume
no liability for safety if users fail to observe these instructions when operating the product.
• If this instrument is used in a manner not specified in this user’s manual, the protection
provided by this instrument may be impaired.
• If any protection or safety circuit is required for the system controlled by the product or for
the product itself, prepare it separately.
• Be sure to use the spare parts approved by Yokogawa Electric Corporation (hereafter
simply referred to as YOKOGAWA) when replacing parts or consumables.
• Modification of the product is strictly prohibited.
• The following safety symbols are used on the product as well as in this manual.
WARNING
This symbol indicates that an operator must follow the instructions laid out in this manual in order
to avoid the risks, for the human body, of injury, electric shock, or fatalities. The manual describes
what special care the operator must take to avoid such risks.
CAUTION
This symbol indicates that the operator must refer to the instructions in this manual in order to
prevent the instrument (hardware) or software from being damaged, or a system failure from
occurring.
CAUTION
This symbol gives information essential for understanding the operations and functions.
