It is designed to measure the continuous temperature profile in aquatic environments from the shore, coastal structures and various carriers and watercraft in autonomous or telemetric modes.
A distinctive feature of the device is the principle of measuring the temperature profile, based on the decomposition of the profile function in a series of Walsh functions, which reduces the error of spatial sampling and eliminates the need for scanning by a probe.
Standard metrological characteristics
|Temperature at each site, 0С||0 ÷ 45||±0,01||±0,1|
Technical characteristics of the basic version
|Measuring cable length (measuring base), m||32|
|Spatial resolution (site length), m||1|
|Polling period of all channels, sec||от 0,2|
|Number of sections in the sensor cable, pcs.||32|
|Interface type||RS 232|
|Communication range in telemetry mode, m||до 100|
|AC power supply 50 Hz (telemetry mode), V||~220|
|DC supply voltage range (stand-alone mode), V||9÷15|
|Power consumption, W||менее 0,6|
|Overall dimensions of the sensor cable, m||от Æ0,010 ´ 32,05|
Algorithmically, the software of the thermoprophilemers provides for the processing of measurement data on a PC in real time and in post-processing mode with the representation of data in the form of instantaneous temperature profiles, the course of temperature over time in all areas of spatial resolution in the form of a gradient and temperature isolines. In the autonomous operation mode of the device – archiving and transmission of measurement data via the Internet and via communication channels.
Example of recording measurements of a vertical temperature profile by a 32–meter distributed sensor mounted vertically on an oceanographic platform (1-11 meters – air environment, 12-32 meters – sea water):
Experimental samples of marine thermoprophilemers for measuring temperature range, heat transfer, parameters of surface waves and internal waves: