Device for detecting fluoride ions in a nitric medium

A device for detecting fluoride ions in a nitric medium, the device comprising:

• a detection probe comprising:
• a measurement element made of zirconium having a wall defining a closed inner space, this measurement element configured to be immersed in the nitric medium to be inspected;
• a reference element ) made of zirconium, disposed in the inner space of the measurement element and electrically connected by a first end to the measurement element;
• measurement conductors electrically connected to the measurement element and to the reference element, and adapted to the measurement of the electrical resistance of a portion of the measurement element and a portion of the reference element;
• a circuit for measuring electrical resistance connected to said measurement conductors, and adapted to measure the relative electrical resistance of said portion of the measurement element, relative to said portion of the reference element;
• a detection circuit adapted to correlate an increase in said relative resistance with the presence of fluoride ions in the nitric medium.