Yokogawa DO202 2-Wire Dissolved Oxygen Analyzer - Manual (Page 5)

IM 12A00A01-61E
Safety Precautions 2-1
• For the protection and safety of the operator and the instrument or the system including the instrument,
please be sure to follow the instructions on safety described in this manual when handling this instrument.
In case the instrument is handled in contradiction to these instructions, Yokogawa does not guarantee
safety.
• For the intrinsically safe equipment and explosionproof equipment, in case the instrument is not restored
to its original condition after any repair or modification undertaken by the customer, intrinsically safe
construction or explosionproof construction is damaged and may cause dangerous condition. Please
contact Yokogawa for any repair or modification required to the instrument.
• The following safety symbol marks are used in this Manual:
WARNING
Indicates a potentially hazardous situation which, if not avoided, could result in death or serious injury.
CAUTION
Indicates a potentially hazardous situation which, if not avoided, may result in minor or moderate injury. It
may also be used to alert against unsafe practices.
IMPORTANT
Indicates that operating the hardware or software in this manner may damage it or lead to system failure.
NOTE
Draws attention to information essential for understanding the operation and features.
WARNING
• Instrument installed in the process is under pressure. Never loosen or tighten the process connector bolts
as it may cause dangerous spouting of process fluid.
• During draining condensate or venting gas in transmitter pressure-detector section, take appropriate care
to avoid contact with the skin, eyes or body, or inhalation of vapors, if the accumulated process fluid may
be toxic or otherwise harmful.
Since draining condensate or bleeding off gas gives the pressure measurement distur-bance, this should
not be done when the loop is in operation.
• If the accumulated process fluid may be toxic or otherwise harmful, take appropriate care to avoid
contact with the body, or inhalation of vapors even after dismounting the instrument from process line for
maintenance.
CAUTION
This instrument is tested and certified as intrinsically safe type or explosionproof type. Please note that the
construction of the instrument, installation, external wiring, maintenance or repair is strictly restricted, and
non-observance or negligence of these restriction would result dangerous condition.
2. SAFETy PrECAUTIONS