Explosion-proof measuring instruments and how to replace detectors in explosion-proof measuring instruments

摘要

PROBLEM TO BE SOLVED: To safely replace a detection part without powering OFF measuring equipment.SOLUTION: Explosion prevention type measuring equipment comprises: a main body chamber housing a main body part connected to a power source while shielding it from the outside; and a detection chamber accommodating the detection part electrically connected to the main body part while shielding it from the outside. Then the measuring equipment comprises a control part capable of performing detection part shielding control to breaking the electric connection between the main body part and detection part with the main body part powered by the power source.SELECTED DRAWING: Figure 4