The Wintersense SDI-12 is a remote road surface temperature sensor designed for use with your Road Weather Information Systems (RWIS). It is an easy-to-deploy, non-invasive, compact, and lightweight sensor that you can mount on existing roadside structures such as streetlight columns or RWIS towers. The Wintersense SDI-12 has a cabled connection for power and communications with an RWIS station or data logger for data storage and forwarding.
With accurate, real-time road surface temperature data, you can forecast your winter road treatments, preventing traffic accidents and potential loss of life.
Leia maisThe Wintersense SDI-12 is equipped with a thermopile sensor that detects the presence of thermal radiation emitted from the target surface. The sensor also has an integrated optical filter that cuts off the visible and near-infrared radiation flux so that you get optimum ambient and sunlight immunity. These features, combined with an eight-second signal-averaging algorithm, provide you with best-of-class data for these measurement parameters:
Road-Surface Temperature |
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Measurement Range | -40 to +70°C (-40 to +158°F) |
Accuracy at -40 to +60°C |
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Resolution | ±0.01°C |
Field of View (FOV) |
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Distance to Target | 2 to 15 m (6.6 to 49.2 ft) |
Dew Point Temperature (Calculated) |
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Measurement Range | -40 to +70°C (-40 to +158°F) |
Accuracy |
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Resolution | 0.1°C |
Air Temperature |
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Measurement Range | -40 to +70°C (-40 to +158°F) |
Accuracy |
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Resolution | ±0.01°C |
Relative Humidity |
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Measurement Range | 0 to 100% |
Accuracy | < ±3% |
Resolution | ±0.1% |
General Specifications |
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Operating Temperature Range | -40 to +70°C (-40 to +158°F) |
Operating Humidity Range | 0 to 100% |
Internal Enclosure Sealing | IP65 (minimum) |
Typical Power Consumption @ 12 Vdc |
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Supply Voltage Range | 5 to 18 Vdc |
Dimensions | 350 x 200 x 100 mm (13.8 x 7.9 x 4.0 in.) |
Weight | 1.4 kg (3 lb) |
Digital Output | SDI-12 |
Default SDI-12 Address | 0 |
Response Time (to M!) | 8 s to read all sensor outputs using SDI-12 commands |
Sensor Warm-up Time | If power is switched, allow 3 s for warm-up before taking a measurement. |
Please note: The following shows notable compatibility information. It is not a comprehensive list of all compatible products.
Product | Compatible | Note |
---|---|---|
Aspen 10 | ||
CR1000X | ||
CR300 | ||
CR3000 (retired) | ||
CR310 | ||
CR350 | ||
CR6 | ||
CR800 (retired) | ||
CR850 (retired) |
The Wintersense SDI-12 is SDI-12 v1.4 compliant and is compatible with all SDI-12 compliant recorders and all Campbell Scientific RWIS stations. Please check with the manufacturer of any non-Campbell Scientific RWIS station to determine compatibility with the SDI-12 industry standard.
An example program to read and store Wintersense SDI-12 data every five minutes. Program uses 0 for the SDI-12 address. This program has a CRB extension making it compatible with GRANITE, CR6, CR1000X, CR350, and CR300 data loggers.