Patent ID: 9632051
Date: 2017-04-25
CPC Classifications: G01N

Claim:
1. A sensor for determining gas content of a two phase fluid flowing in a flow line, the sensor comprising: a sleeve configured to be arranged in the flow line, in a stream of the fluid, wherein the sleeve of the sensor includes a plurality of measurement electrodes spaced apart from and in register with one another so that in pairs the measurement electrodes define a plurality of subdivision spaces subdividing a flow section of the sleeve; and switch and measurement members that are coupled to the measurement electrodes to cause each subdivision space of the sleeve to switch between a measuring state in which the members apply an excitation electrical signal between the two adjacent measurement electrodes defining a subdivision space under consideration and measure a value representative of a reception electrical signal resulting from applying the excitation electrical signal to determine gas content of the fluid that is associated with the representative value, and a non-measuring state, wherein the switch and measurement members are configured to selectively switch the state of each of the subdivision spaces independently of one another, and wherein the sleeve of the sensor further includes guard electrodes that extend ends of the measurement electrodes while being electrically separate therefrom, and that are coupled to the switch and measurement members such that the guard electrodes are at all times at a same electric potential as the measurement electrodes that the guard electrodes extend respectively.