Advertisement
Introduction
Applications
The VW temperature sensor is used to monitor the heat of hydration in
mass concrete.
Operation
The VW temperature sensor consists of a stainless steel body, a wire
held in tension within the body, an electromagnetic coil, and signal
cable.
The body of the sensor expands and contracts with changes in tempera-
ture, increasing or decreasing the tension of the wire inside the body.
When a readout is connected to the sensor, it sends an electric pulse to
coil, which plucks the wire and causes it to vibrate at its natural fre-
quency. A second coil picks up the vibration and returns a frequency to
the readout. The frequency reading is converted to units of temperature
by applying calibration factors.
VW Temperature Sensor, 2012/6/20
1
Advertisement
