Active Road Sensor
MetSalt
- removable electronics
- easy maintenance
- accurate freezing point detection
More info
- +46 7010 902 30
- info@metsense.com
Key Benefits
MetSalt is a unique low-power embedded road sensor for accurate measuring of the road temperature and even more accurate detection of the freezing point. It is equipped with an external temperature probe which enables temperature measurement in a specific depth.
Easy Maintenance
Two part housing and removable electronics allow for an easy maintenance.
External Temperature Probe
MetSalt is equipped with an external temperature probe which enables accurate detection of both surface and deep road temperatures.
Low Power Consumption
A smart measurement algorithm allows for a low power consumption.
Freezing Point Detection
Sensor is flush mounted in the pavement and performs a continuous cycle of freezing point detection.
Product Info
Parameters
| Detection Principle | Continuous cycle of heating and cooling |
|---|---|
| Detection Area | 2 detection points: sensor, external probe |
| Freezing point | -40 to 0 °C |
| Freezing point accuracy | ±0.5 °C |
| Road Surface Temperature Range | -40 to +60 °C |
| Subsurface Temperature Range | -40 to +60 °C |
| Temperature Sensor Accuracy | ±0.1 °C |
| Data Refresh Rate | Temperature continuously, freezing point every ~30 minutes |
| Data Connectivity | RS 485 Modbus |
| Operating Temperature | -40 to +60 °C |
| Power Supply | 12 VDC |
| Sensor Dimensions & Weight | 120 (dia) x 57 mm, 1.2 kg |
| Ingress Protection | IP 66 |
| Cable Length | 50 / 100 / 150 m variants |
Installation & Operation
MetSalt consists of two major parts: sensor body and sensor probe with atached electronics. The sensor body is flush mounted in the pavement with the cable connection and external temperature probe laid inside of a groove cut. Once all the "dirty work" with bitumen is complete, the sensor probe with electronics are inserted in the sensor body.
The freezing point is measured by a continuous cycle of cooling and heating the sensor probe. When freezing, the solution of water and de-icing agent releases latent heat at a constant temperature. This "thermal hold" effect is detected by the sensor probe.
MetSalt also has an external temperature probe. Depending on the installation location of the external probe, it can measure surface or subsurface (deep) road temperature.
Product
