Equipment for continuous and on-line hydrogen risk monitoring in the gaseous effluents from the primary circuit of nuclear power plants type PWR.

HIGHER PERFORMANCES
Relative error : < ±5% or ± 0.1% vol
Stability (1 month) : < 5% relative
Repeatability : ±5% or ± 0.1% vol

OPERATION PRINCIPLE
The OEG 2070 oxymeter monitors and takes continuous measurements of the level of oxygen per volume, the temperature and the pressure of potentially explosive and radioactive gases. The measurement principle of the oxygen sensor is based on the use of a specific electro-chemical pile (type HERSCH pile) which produces a current that is proportional to the oxygen level. Sensors of pressure (type Weasthone bridge) and of temperature (type Pt 100) makes the necessary compensations for pressure and temperature. The semi-automatic calibration is realized by injection of a gaseous oxygen standard. The calibration results are recorded.
This calibration system takes into account :

• past calibrations,
• plausibility and acceptance criteria (e.g., calibration repeatability),
• detection of any calibration system failure.

LOWER COSTS
High oxygen, temperature and pressure sensors lifetime
High availability : < 2h of intervention each month
No conditioning products use

ERGONOMICS
On-line help
Self-diagnostic
Clear dialogue
Semi-automatic calibration
Built-in self-test
Dialogue and control by drop-down menus

OPTIONS
Measurement platinum equipped with a condensates tank
RCCM-3 SKID
Electronic unit lockable cabinet