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
| Measured parameter | Range
measurements |
Случайная
погрешность |
Random
error rate |
| Temperature at each site, 0С | 0 ÷ 45 | ±0,01 | ±0,1 |
Technical characteristics of the basic version
| Parameter | Meaning |
| 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:
