Lufft Active Road Sensor ARS31Pro-UMB, External Temperature Sensor, 164 ft Supply Cable
Product Number: 8810.U051Overview
The active road surface UMB sensor ARS31Pro is flush-mounted in the road or runway surface and measures the freezing temperature by means of active cooling and heating of the sensor surface. Through this, it's independent from the de-icing material. In addition, it measures the road surface temperature. This surface temperature sensor is integrated into a second housing which is connected to the ARS31Pro-UMB. The distance between the two housings is 50 cm. One additional measurement is carried out to find out critical conditions in the next few hours. This early alert message delivers extra road surface condition information in addition to the real time road conditions. The two-section housing design allows the combined electronics unit to be removed for maintenance purposes at any time, in just a few minutes. In conjunction with the interface converter 8160.UISO, the sensor can be built into new and existing UMB networks. The sensors are addressable and can be networked.
Benefits
Active cooling concept enables the freezing point determination independently from de-icing material.
Sensor consists of two parts: replaceable sensor head with electronics and fixed mounted socket.
Actual surface temperature sensor is integrated into a second housing for accurate measurements not influenced by the active colling/heating element. One additional measurement is carried out to find out critical conditions in the next few hours.
Permanent usage on runways where non-invasive sensors cannot be used.
Specifications
Technical Attributes
| Material enclosures | Salt , UV resistant modified PTFE |
| Number of Related Temperature Sensors | 1 |
| Cable Length | 164 ft (50 m) |
| Weight EU | Approx. 2.4 lb (1100 g) |
| Interface | RS485 Baud rate: 1200 - 38400 bit/s (Standard: 19200) |
| Cable Connection | Open wires 0.5 mm² |
| Number of Depth Temperature Sensors | 0 |
| Height above Absolute Altitude | 9843 ft (3000 m) |
| Standard storage temperature | -40 - +158 °F (in packaging) |
| Accuracy | External road surface temperature: ±0.4 °F (-14 - +50 °F), or ±1 °F |
| Resolution EU | External road surface temperature - 0.1 |
| Dimensions (free text) | Ø 4.72441 in, H 1.97 in (Ø 120 mm, H 50 mm) |
| Digital outputs | UMB |
| Product highlights | Two part housing design allows easy maintenance/re-calibration Llow energy consumption allows solar operation Freezing point determined independently from de-icing material |
| Number of Depth Sensors | 0 |
| Power supply | 24 VDC ±10 % |
| Cooling Sensor | Active |
| Parameters Measured | Road surface temperature Freezing point |
| Measurement technology | Peltier element: Active cooling and heating Road surface temperature: NTC |
| Connector (text) | CAGE CLAMP, WAGO, (cross-section |
| Operating temp range 1 | -40 - +176 °F |
| Communication | RS 485-UMB |
| Measurement Range EU | Road surface temperature: -40 - +176 °F Freezing point: -40 - +32 °F Water film height: 0 - 0.16 in Friction (Grip) [slippery-dry]: 0 - 1 Ice Percentage: 0 - 100 % |
| Measurement distance | in-situ |
| Casing IP Rating | IP68 |
| Operating humidity | 0 - 100 % RH |
Resources
Data Sheets (4)
Manuals (2)
Software/Firmware (2)
Guides (1)
Certificates (1)
White Papers (1)
8160.UDAC
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