Envco – Environmental Equipment

Special features:
• Interchangeable sensor/electronics
• Polling via RS485-interface
• Low energy consumption (solar operation)
• Radar procedure to measure water film

Two concentric circles on the sensor surface provide the measurement values for the multi-frequency measurement. Alongside, in a recess, there are two electrodes that provide information about salt concentration and thereby the freezing temperature. Additionally, a temperature sensor, which determines the surface temperature, is installed in the central electrode.

Beneath the remainder of the surface is the aerial for the impedance sensor, by means of which the water film height above the cover can be determined.

The printed circuit board, which contains the signal conditioning and evaluation electronics, is also directly connected to the cover. Data is output via an RS485 interface.

The following measurements are taken:
- Road surface temperature
- Water film level up to 4 mm
- Freezing temperature for NACL (others on enquiry)
- Road condition (dry/damp/wet/ice or snow/residual salt/freezing)

The sensors can be addressed and therefore networked. The measurement data is digitally transmitted via RS485-interface for further processing (logger, PLC etc.).

Technical data
Connector CAGE CLAMP, WAGO (³ <0,5mm)
Detectable road conditions dry/damp/wet/ice or snow/residual salt content/freezing wetness
Dimensions Ø 120mm, height 50mm
Interface RS485, baud rate: 2,400...38,400 bit/s (default: 19,200) cable length : 25m standard, up to 100m possible
Operating rel. humidity 0...100% r.h.
Operating temperature -30...70°C
Power supply 9...14VDC, nominal 12V
Protection type IP68
Rated current <200mA
Storage temperature -30...70°C
Weight 8410.00: approx. 800g
Weight 8410.02: approx. 900g

Road surface temperature
Principle 8410.00: NTC
Measuring range 8410.00: -30 ... 70 °C
Accuracy 8410.00: ±0.2°C (-10...10°C), or ±0.5°
Resolution 8410.00: 0,1 °C

Freezing point
Measuring range -20 ... 0 °C
Accuracy ±1°C (t>-10°C)
Resolution 0,1 °C

Water film height
Principle Radar
Measuring range 0 ... 4 mm
Accuracy ±(0.1mm + 20% of measurement)
Resolution 0,01 mm

Below-ground temperature (at 2 different depths)
Principle 8410.02: NTC
Measuring range 8410.02: -30 ... 70 °C
Accuracy 8410.02: ±0.2°C (-10...10°C), or ±0.5°
Resolution 8410.02: 0,1 °C

Ordering Information
8410.00 Intelligent road sensor IRS21, 25m cable
8410.050 Intelligent road sensor IRS21, 50m cable
8410.100 Intelligent road sensor IRS21, 100m cable
8410.150 Intelligent road sensor IRS21, 150m cable

With thermometric bulb(s)
8410.01 Intelligent road sensor IRS21, 25m cable (With 1 depth thermometric bulb)
8410.051 Intelligent road sensor IRS21, 50m cable (With 1 depth thermometric bulb)
8410.101 Intelligent road sensor IRS21, 100m cable (With 1 depth thermometric bulb)
8410.02 Intelligent road sensor IRS21, 25m cable (With 2 depth thermometric bulbs)
8410.052 Intelligent road sensor IRS21, 50m cable (With 2 depth thermometric bulbs)
8410.102 Intelligent road sensor IRS21, 100m cable (With 2 depth thermometric bulbs)
8410.152 Intelligent road sensor IRS21, 150m cable (With 2 depth thermometric bulbs)

Accessories
8410.KON2 isolated interface converter RS485-RS232