FIELD: physics.
SUBSTANCE: test points, whose panels are connected to measuring cables, are fitted along the cable run at a certain distance from each other at points for connecting factory lengths of the cable. The route is periodically detoured and measurements are taken by connecting to measuring cables on the panels of the test points (TP). Moisture sensors are fitted in channels of the intercity cable duct line next to viewing devices, with measuring cables on the panels of the test points connected to the said sensors. By connecting panels of the test points through the measuring cables to the moisture sensors, the moisture level is measured, from which air tightness of the channel of the intercity cable duct line is determined.
EFFECT: more efficient monitoring of air tightness.
1 dwg
