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Section 4 Monitoring Equipment
401. Monitoring Equipment
1. The control platform of the submersible is to be fitted with indicating instruments for monitoring at least the following environmental conditions inside the vehicle:
(1) Pressure
(2) Temperature
(3) Humidity
(4) Oxygen partial pressure
(5) CO2 partial pressure
(6) Pressure of connected breathing gas containers/bottles
(7) Outlet pressure of pressure reducing valves
2. The readings of the pressure gauges are to be accurate to at least 1 % of the complete indicating range. The use of mercury pressure gauges and thermometers is not permitted.
3. Each space should be provided with facilities for measuring the room temperature and the
Æ ĀË partial pressures.
4. A permanent gauge and a standby indicator are to be provided for monitoring both the
Æ ĀË partial pressure. Test tubes may be recognized as standby indicators.
ĀË and
ĀË and
5. The system for the analysis of oxygen is to have a minimum indicating accuracy of 0.015 bar oxy- gen partial pressure.
6. The CO2 analysis system is to have a minimum indicating accuracy of 0.001 bar Æ ĀË partial pressure.
7. A system of analysis is to
ÆĀ Ħ ÀĀĦ ÀĀ Ż and hydrocarbons.
be provided for determining atmospheric impurities Test tubes may be approved for this purpose.
such as