DEVICE FOR MEASURING A TEMPERATURE DIFFERENTIAL

摘要

The invention relates to a device (1) for measuring a difference in temperature (T2−T1) upstream and downstream from a member travelled by a fluid, in particular the temperature of a gas upstream and downstream of a particle filter or any other gas-treatment element, said device comprising: a first thermocouple (10) for taking an upstream measurement; a second thermo couple (20) for taking a downstream measurement, the first and second thermocouples being electrically connected head-to-foot in series, at least during an operating phase of the device; a chain (13, 50) for processing the voltage output by the assembly formed by the two thermocouples electrically connected in series, such as to generate a signal (51) which is a function of the temperature difference (T2−T1) measured by the thermocouples.

主权项

1. A device for measuring a difference in temperature upstream and downstream of a part through which a fluid flows, comprising the temperature of a gas upstream and downstream of a particle filter said device comprising:
a first thermocouple for carrying out a measurement upstream; a second thermocouple for carrying out a measurement downstream, the first and second thermocouples being electrically series-connected head-to-tail, at least during a phase of operation of the device; and a processing chain for processing the voltage delivered by the assembly formed by the two electrically series-connected thermocouples, so as to generate a signal which is a function of the difference in temperature measured by the thermocouples.