Effects of High‑Pressure Conditions on Temperature Measurement

Temperature measurement under high‑pressure conditions is a challenging task, because the high‑pressure environment has many effects on temperature measurement equipment and measurement results:

I. Large Electromagnetic Interference
In a high‑pressure environment, a strong electromagnetic field is generated. This strong field interferes with the electronic components and signal transmission lines of traditional temperature measurement devices. For temperature sensors based on electrical principles (such as thermocouples and resistance temperature detectors), electromagnetic interference may induce extra voltage signals on the signal lines, leading to deviations in measurement results.

II. High Insulation Requirements
A high‑pressure environment demands that temperature sensors (such as thermocouples and resistance temperature detectors) have good insulation performance. Because high pressure may cause insulation breakdown, which affects the measurement signal, resulting in severe errors or invalid data, wasting working time. More seriously, overvoltage during equipment startup can puncture the sensors and measuring instruments, causing damage to the equipment, and even leading to experimental accidents or personal injury.