SurfaceVue 10 Road Surface Condition Sensor
“
Specifications
- Product Name: SurfaceVue 10 Fixed-Location, Non-Invasive Road
Surface Condition Sensor - Revision: 04/2024
Product Information
About SurfaceVue 10
The SurfaceVue 10 is a road surface condition sensor that
provides real-time data on road surface states such as dry, moist,
wet, slush, ice, snow, or hoar frost. It automatically sends data
messages at regular intervals and can be integrated with data
loggers for continuous monitoring.
Operating Principles
Ground temperature is measured at 6 cm depth below the road
surface. The sensor wakes up with version information and sends
data messages once every 10 seconds after initial setup. Dry
calibration can be performed under user control.
Technical Specifications
The SurfaceVue 10 should be calibrated when the surface is dry
and recalibrated after installation or surface type changes. It is
important to protect the sensor from electrostatic discharge.
Follow local regulations and use caution when working near roadways
and moving vehicles.
Product Usage Instructions
Installation
Installation Height and Angle
Mount the sensor at the recommended height and angle for
accurate measurements. Refer to the installation guide for specific
instructions.
Install Sensor
Securely install the SurfaceVue 10 in the designated location
following the provided guidelines.
Wiring
Connect the sensor using RS-232 or RS-485 cables based on your
communication requirements. Ensure proper wiring to prevent signal
interference.
RS-232
For RS-232 communication, keep cable lengths under 10 meters to
maintain signal integrity.
RS-485
Use an RS-485 extender kit for longer communication distances by
converting RS-232 to RS-485.
CRBasic Programming
Utilize CRBasic programming to interface with data loggers and
customize data logging intervals.
Data Format
Understand the data format transmitted by the SurfaceVue 10 for
accurate interpretation of readings.
Maintenance
Regularly maintain the sensor to ensure accurate readings and
longevity. Follow maintenance guidelines provided in the
manual.
Calibration
Calibrate the sensor when the surface is dry and perform
recalibration as necessary based on changes in distance to target
or surface type.
Troubleshooting
Refer to the troubleshooting section in the manual for guidance
on resolving common issues with the SurfaceVue 10.
Frequently Asked Questions (FAQ)
How do I calculate the distance from the sensor to the
measuring area on the road?
The distance calculation method is provided in the user manual.
Follow the instructions for accurate measurements.
How do I calculate the installed angle?
Refer to the installation guide for details on calculating and
setting up the correct installation angle for the sensor.
Can I calibrate the sensor remotely?
Remote calibration options are not available for the SurfaceVue
10. Calibration should be done manually as per the instructions
provided.
What is the definition of ground temperature?
Ground temperature refers to the temperature below the road
surface at a depth of 6 cm (2.4 in).
What type of structure should the SurfaceVue 10 be mounted
to?
The sensor should be mounted on a stable structure that can
support its weight and ensure accurate readings. Follow mounting
guidelines provided in the manual.
Does the SurfaceVue 10 need to be continuously powered?
The SurfaceVue 10 requires continuous power supply for
uninterrupted operation. Ensure a stable power source is available
for optimal performance.
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PRODUCT MANUAL
SurfaceVue 10 Fixed-Location, Non-Invasive Road Surface Condition Sensor
Revision: 04/2024
Copyright © 2023 2024 Campbell Scientific, Inc.
Please read first
About this manual
Please note that this manual was produced by Campbell Scientific Inc. primarily for the North American market. Some spellings, weights and measures may reflect this. In addition, while most of the information in the manual is correct for all countries, certain information is specific to the North American market and so may not be applicable to European users. Differences include the U.S. standard external power supply details where some information (for example the AC transformer input voltage) will not be applicable for British/European use. Please note, however, that when a power supply adapter is ordered from Campbell Scientific it will be suitable for use in your country.
Reference to some radio transmitters, digital cell phones and aerials (antennas) may also not be applicable according to your locality. Some brackets, shields and enclosure options, including wiring, are not sold as standard items in the European market; in some cases alternatives are offered.
Recycling information for countries subject to WEEE regulations 2012/19/EU
At the end of this product’s life it should not be put in commercial or domestic refuse but sent for recycling. Any batteries contained within the product or used during the products life should be removed from the product and also be sent to an appropriate recycling facility, per The Waste Electrical and Electronic Equipment (WEEE) Regulations 2012/19/EU. Campbell Scientific can advise on the recycling of the equipment and in some cases arrange collection and the correct disposal of it, although charges may apply for some items or territories. For further support, please contact Campbell Scientific, or your local agent.
Table of contents
1. About SurfaceVue 10
1
2. Precautions
2
3. Initial inspection
2
4. Overview
3
5. Operating principles
3
6. Technical specifications
4
7. Installation
6
7.1 Installation height and angle
6
7.2 Install sensor
7
7.3 Wiring
10
7.3.1 RS-232
11
7.3.2 RS-485
11
7.4 CRBasic programming
12
7.5 Data format
14
8. Maintenance
15
9. Calibration
17
9.1 While connected to Campbell Scientific data logger
17
9.2 While connected directly to a computer
17
10. Troubleshooting
18
11. Frequently asked questions
19
11.1 How do I calculate the distance from the sensor to the measuring area on the
road?
19
11.2 How do I calculate the installed angle?
20
11.3 Can I calibrate the sensor remotely?
20
11.4 What is the definition of ground temperature?
20
11.5 What type of structure should the SurfaceVue 10 be mounted to?
20
11.6 Does the SurfaceVue 10 need to be continuously powered?
20
Table of Contents – ii
1. About SurfaceVue 10
The SurfaceVueTM10 is a non-invasive road condition sensor used by road weather professionals to provide vital information about their road network to make better maintenance and operational decisions. The SurfaceVue 10 sensor consists of two non-invasive road weather sensors designed for use with your Road Weather Information System (RWIS). The CS981 is enclosed in a white radiation shield and mounted on top of the CS991, which is in a black tube. The CS981 measures surface temperature, air temperature, relative humidity, and air pressure. The measured air temperature and relative humidity are used to calculate dew point. Ground temperature and wind speed are modeled. The CS991 uses spectroscopic analysis to provide you with surface state, grip (friction), and water and ice layer thickness data. The measured data is communicated to a data logger over RS-232 or optionally over RS-485 using an RS485EXT converter box.
NOTE: Ground temperature is the temperature below the road surface at 6 cm (2.4 in) depth.
Road surface condition is determined by the presence and amount of ice or water on the road surface. From these measurements, the built-in model determines the coefficient of friction, which corresponds to the grip between the road surface and vehicle tires. The model is developed by using braking deceleration measurements as a reference. Comparison tests indicate about 0.10 units as standard deviation of the difference to the reference. Very thin layers and mixed ice/water layers may occasionally lead to larger differences. All the data is updated approximately every 10 seconds.
The analyzed road surface state is reported as:
1. Dry 2. Moist 3. Wet 4. Slush, ice or snow with water 5. Ice 6. Snow or hoar frost.
After power-up or reset, the SurfaceVue 10 sends a wake-up string containing the sensor name and version information. Approximately 10 seconds after the initial message, it automatically sends a data message when a measurement/calculation cycle is complete; typically, once every 10 seconds. A data logger with the SurfaceVue 10 program, see CRBasic programming (p. 12), is
SurfaceVue 10 1
used to log data every minute and can perform a dry calibration under user control, see Calibration (p. 17).
2. Precautions
l READ AND UNDERSTAND the Safety section at the back of this manual.
l Use caution when working near roadways and moving vehicles. Coordinate with local traffic authorities and use appropriate traffic control measures.
l Although the SurfaceVue 10 is rugged, it should be handled as a precision instrument.
l Do not use RS-232 cable lengths greater than 10 m. For longer communications distances, an RS-485 extender kit, which converts RS-232 to RS-485 should be used.
l Follow local regulations. See Compliance in Technical specifications (p. 4).
l IMPORTANT: The SurfaceVue 10 should be calibrated when the surface is dry, and it should be re-calibrated after installation, if the distance to target is changed, or the surface type is changed, such as road resurfacing.
l Protect from ESD (electrostatic discharge).
Table 2-1: Symbols Symbol
Description
Caution. See Install sensor (p. 7) and Safety.
3. Initial inspection
l Upon receipt of the SurfaceVue 10, inspect the packaging and contents for damage. File any damage claims with the shipping company.
l The model number and cable length are printed on a label at the connection end of the cable. Check this information against the shipping documents to ensure the expected product and cable length are received.
SurfaceVue 10 2
4. Overview
The SurfaceVue 10 is simple to install on new and existing infrastructure. Each sensor is supplied with a mounting bracket and two band clamps suitable for mounting the sensor to a vertical pole with diameters between 70 and 170 mm (3 and 7 in). Features include:
l Accurate measurements l Non-invasive l Easy to install l Simple to maintain l Remote OS update via data logger l Compatible with most data loggers and RWIS l Monitor troublesome areas, such as bridge decks l Ideal for multiple uses, including roads, parking lots, cycleways, and sidewalks
5. Operating principles
The SurfaceVue 10 unit is equipped with a thermopile sensor that detects the presence of thermal radiation emitted from the target surface. Additionally, it uses optical measurements to detect water and ice. The measuring light is not visible to the human eye. The light reflection from the measured surface depends on the surface material and contamination on the window surface. The measurement method is optimized for a standard stony asphalt surface. The signal levels of the SurfaceVue 10 unit are factory calibrated for a dry surface. Water and ice on the road surface attenuate the reflected light as compared to the calibrated values. The degree of signal attenuation depends on the amount of ice or water. The measurement system is optimized for thin layers, because very thin layers (50 m) of ice can significantly reduce grip. Thick layers (4 mm) of water may attenuate the signal too much for a reliable measurement. A continuous layer of water on ice may also result in a false state and elevated grip value. Fortunately, this is not a very common condition on road surfaces. The SurfaceVue 10 is eye safe for infra-red radiation according to the standard EN 60825-1:2007.
SurfaceVue 10 3
6. Technical specifications
Road conditions Surface states:
Field of view (FOV) Road surface conditions: Road surface temperature:
Grip (friction) Measurement range: Accuracy: Resolution:
Water and ice layer thickness Range: Accuracy:
Resolution: Road surface temperature
Measurement range: Accuracy 40 to 60 °C: Resolution: Ground temperature (modeled) Measurement range: Accuracy 40 to 60 °C: Resolution: Dew point temperature (calculated) Measurement range: Accuracy 40 to 60 °C: Resolution:
Dry, moist, wet, slush, snow, ice
2.8° (0.5 m at 10 m) 10° (1.7 m at 10 m)
0 to 1.0 (unitless) ±0.1 (compared to braking friction reference) ±0.01
0 to 3 mm (0 to 0.12 in) l ±0.1 mm up to 1.0 mm (0.004 in up to 0.04 in) l 10% above 1.0 mm (0.04 in)
±0.01 mm
40 to +60 °C (40 to +140 °F) ±0.3 °C ±0.1 °C
40 to +60 °C (40 to +140 °F) ±0.5 °C ±0.1 °C
40 to +60 °C (40 to +140 °F) ±1.0°C ±0.1 °C
SurfaceVue 10 4
Air temperature
Measurement range:
40 to +60 °C (40 to +140 °F)
Accuracy:
±0.3 °C
Resolution:
±0.1 °C
Relative humidity
Measurement range:
0 to 100%
Accuracy:
±2%
Resolution:
±0.1%
Barometric pressure
Measurement range:
500 to 1100 hPa
Accuracy:
±1.0 hPa
Resolution:
±0.1 hPa
Wind speed (modeled)
Measurement range:
0 to 60 m/s (0 to 134 mph)
Accuracy:
±10%
Resolution:
±1 m/s
General specifications
Measurement range:
3 to 10 m (9.8 to 32.8 ft)
Installation angle:
30 to 80°
Operating temperature range:
40 to 60 °C (40 to 140 °F)
Operating humidity range:
0 to 100%
Power consumption @ 12 VDC:
<100 mA (typical)
Supply voltage range:
9 to 30 VDC
Digital output:
RS-232, RS-485 (with RS485EXT)
Warm-up time:
1 min
Cable type:
Five conductor
Cable length:
10 m (32.8 ft)
Dimensions, excluding band clamp
(length x height x depth):
76.2 x 27.9 x 17.8 cm (30 x 11 x 7 in)
SurfaceVue 10 5
Weight: Compliance:
4.9 kg (10.8 lb)
View documents at: www.campbellsci.com/surfacevue10
7. Installation
The SurfaceVue 10 is designed to measure asphalt or concrete road or runway surfaces. It is typically installed permanently to a large pole or lattice tower and aimed at the measuring surface. There are multiple sensors to consider when choosing a location and installing the sensor. These sensors include the surface condition optics, infrared temperature, air temperature, and dew point.
Installation considerations:
l Distance from sensor to measuring area of road is within 3 to 10 meters (10 to 33 ft). The preferred distance is 3 to 7 meters (10 to 23 ft). See How do I calculate the distance from the sensor to the measuring area on the road? (p. 19).
l Mounting angle is within 30 to 80°. The preferred angle is 45 to 80°. See How do I calculate the installed angle? (p. 20).
l Avoid solar reflections into the sensor detector hood. It is recommended to mount the sensor facing north in the northern hemisphere.
l Avoid existing or potential obstructions between the sensor and roadway, such as snowbank buildup blocking the sensor signal.
l Avoid cracks or painted lines in the pavement within the sensor field of view.
l Select a site away from intersections and where there is not regularly stopped traffic.
7.1 Installation height and angle
Installation height and angle affect the surface measurement area. Use an online field of view tool https://docs.wintersense.com/field-of-view/ to see how these factors affect the field of view, and consequently the section of road surface being measured.
The recommended installation height for a SurfaceVue 10 smart sensor is 3 to 5 meters (10 to 16 feet). Sensors can be installed higher if required. However, the higher the sensor is installed, the larger the surface measurement area will be. This increases the risk of sensing the temperature of unwanted objects. In addition, a large measuring distance may result in reduced accuracy under
SurfaceVue 10 6
certain atmospheric conditions. See How do I calculate the distance from the sensor to the measuring area on the road? (p. 19) for more information.
The following table and figure show typical installation parameters and resulting target dimensions.
Installation parameter
Surface temperature
Surface condition
Angle ()
45°
Sensor setback (B)
3 m (10 ft)
Sensor height (H)
3 m (10 ft)
Field of view (FOV)
10°
2.8°
Calculated target dimensions:
Distance to target (D)
Target coverage area (A)
4.3 m (14 ft)
0.64 m2 (6.9 ft2)
0.05 m2 (0.5 ft2)
Major (long) diameter (L)
1.1 m (3.5 ft)
0.3 m (1.0 ft)
Minor (short) diameter (S)
0.8 m (6.9 ft)
0.2 m (0.7 ft)
7.2 Install sensor
The SurfaceVue 10 installation kit includes brackets, metal bands, and mounting hardware needed to secure it to a pole. The metal bands are routed over the brackets, and then around a vertical pole. They are anchored in place using screw clamps.
Recommended equipment and supplies:
l 7 mm (9/32 in) hex tool or slotted screwdriver (not supplied) for adjusting band clamp l 13 mm (1/2 in) spanner, wrench, or socket to allow sensor angle adjustment l Clean lint-free cloths l Laser pointer (optional accessory)
SurfaceVue 10 7
Attach the bracket to a vertical post as follows: 1. Feed a metal band around the bracket top and bottom. Insert the tab on the end of the screw threads into the hole at one end of the strap. Tighten enough so the bands stay in place but can be moved vertically. 2. Position the bracket at the SurfaceVue 10 desired height and facing the road surface.
3. Pull the strap tight around the pole and bracket. 4. Use metal shears to remove any excess strap, leaving a small amount for adjustments. 5. Using a flathead screwdriver or nut driver, tighten the screw clamp. 6. Attach the SurfaceVue 10 to the bracket using two bolts. Finger tighten the nuts. 7. Route the sensor cable from the sensor, down the pole and to the enclosure. Use cable ties
to secure in place.
SurfaceVue 10 8
8. Select the angle of the sensor support arm so that the sensors point to a desired spot of measurement on the road. Turn on the laser pointer. Gently slide the laser pointer into the surface-temperature sensor tube. Adjust the sensor angle to point it at the road surface to be measured. DANGER: Never shine a laser pointer at anyone. Do not point a laser pointer at mirror-like surfaces.
9. Gently remove the laser pointer from the tube, and turn it off. Take care to not change the sensor angle.
SurfaceVue 10 9
10. Check the rotation of the CS991 sensor in the tube as shown in the following figure. The two smaller lenses of the sensor should be in line with the road surface.
11. Once the sensor is oriented correctly tighten the bracket nuts.
7.3 Wiring
The SurfaceVue 10 cable terminates in individual wires. Connect the wires to the data logger in the order shown in the following sections. Also see Does the SurfaceVue 10 need to be continuously powered? (p. 20).
SurfaceVue 10 10
7.3.1 RS-232
Table 7-1: RS-232 wire color, function, and data logger connection
SurfaceVue 10 Wire color
Wire function
Data logger connection
White
Receive signal (Rx)
C odd
Black
Transmit signal (Tx)
C even
Brown
Power 9 to 30 VDC
12V
Blue
Ground
G
Yellow
Not used
Not connected
7.3.2 RS-485
An RS485EXT box, as shown in the following figure, is required to convert the RS-232 signals to RS-485. See https://www.campbellsci.com/rs485ext for more information. Using a flat-bladed screwdriver press firmly in the small square slot to open the wire slot. Insert the end of the wire into the wire slot. Remove the screwdriver to close the wire slot. Repeat with the other wires.
TIP: Wires with ferrules can be pressed firmly into the wire slot. You do not need to open it first.
Table 7-2: RS485EXT wire color, function, and data logger connection
Wire color (SurfaceVue 10)
RS485EXT connection
Data logger connection
White
RS232 Rx
Black
RS232 Tx
Brown
RS232 12VDC (power)
Blue
RS232 G
Yellow
Not used
Clear
RS485 A(-)
C odd
RS485 B(+)
C even
RS485 12VDC (power 10 to 30 VDC)
12V
RS485 Ground
G
SurfaceVue 10 11
7.4 CRBasic programming
Downloadable example programs are available at https://www.campbellsci.com/downloads/surfacevue10-example-program . The SerialOut(), SerialIn(), and SerialInRecord() instructions program a data logger to communicate with the SurfaceVue 10 using RS-232. Use SplitStr() to separate the returned data.
NOTE: The standard serial configuration is RS-232, 38400 baud, 8N1. The optional RS485EXT converter box has the same serial configuration. There are three constants that can be edited before sending the SurfaceVue 10 program to the data logger.
SurfaceVue 10 12
l ScanInterval This changes the scan interval of the main program. Time in seconds. Default is 30 seconds.
l SurfaceVue_RS232 – This sets the communications protocol the data logger will use to retrieve data, calibrate, and set configuration parameters. The sensor has native RS-232 communications. RS-485 is used when the RS485EXT is used. Set to true for RS-232 and false for RS-485. Default is true for RS-232.
l SurfaceVue_Port This sets the com port the sensor is wired to on the data logger. Options are ComC5, ComC7, COMRS232, 32 to 47 (SDM device addresses).
There are subroutines included in the program to simplify interacting and collecting data from the sensor. The user should have permissions and know how to edit variables in the data logger Public table.
l SurfaceVueCalDry Subroutine to initiate a dry calibration. The road or runway surface being measured should be dry when initiating this command. Set the SurfaceVueCalDry variable to a value of 1 in the Public table. When the calibration is completed the SurfaceVue_Drystring variable will populate with the results of the calibration. Verify that the condition value is dry and the friction value is the expected dry value of 0.81.
l SurfaceVueConfRead – Subroutine to read the configuration (CONF) of the sensor. Set the SurfaceVueConfRead variable to a value of 1 in the Public table. The output of the CONF string will display in the SurfaceVue_Confstring variable.
l SurfaceVueConfWrite – Subroutine that will allow the user to write a configuration (CONF) variable to the sensor. This should only be used when instructed by Campbell Scientific. Enter the CONF variable to be changed in the SurfaceVue_ConfigNumber variable. This is an integer number between 1 and 13. Enter the value of the configuration parameter to be changed in the SurfaceVue_ConfigValue variable. Next, set the ConfWriteFlag variable to a value of 1. The SurfaceVue_Confstring will populate with the new configuration to confirm the change.
l SurfaceVueRead Subroutine to read the automatic output from the sensor and parse it into variables for data output.
SurfaceVue 10 13
7.5 Data format
The SurfaceVue 10 automatically outputs a new data message approximately once every 10 to 20 seconds. The data is comma separated ASCII ending with CR + LF:
RCM411R V 0.80 2020-03-18
0.037, 0.108, -0.003, 0.60, 0, 22.3, -5.8, 21.08, 248.6, 0.00, 21.11, 0.00, 1.025,1010.51, 7.3, 8.7 0.031, 0.107, -0.002, 0.60, 3, 22.3, -5.8, 21.13, 248.7, 0.71, 21.11, 0.00, 1.040,1010.47, 7.3, 8.7 0.029, 0.107, -0.002, 0.60, 3, 22.2, -5.8, 21.16, 248.7, 0.70, 21.11, 0.00, 1.047,1010.53, 7.3, 8.7 0.307, 0.122, -0.021, 0.61, 3, 22.3, -5.8, 21.16, 248.7, 0.72, 21.11, 0.00, 0.794,1010.50, 7.3, 8.8 0.648, 0.141, -0.038, 0.61, 3, 22.2, -5.8, 21.16, 248.7, 0.74, 21.11, 0.00, 0.604,1010.56, 7.3, 8.8 0.965, 0.159, -0.013, 0.61, 3, 22.2, -5.8, 21.21, 248.7, 0.76, 21.11, 0.00, 0.490,1010.54, 7.3, 8.8 1.257, 0.175, -0.014, 0.61, 3, 22.2, -5.8, 21.19, 248.7, 0.78, 21.11, 0.00, 0.415,1010.42, 7.3, 8.8 1.519, 0.190, -0.016, 0.61, 3, 22.3, -5.7, 21.13, 248.7, 0.80, 21.11, 0.00, 0.364,1010.50, 7.4, 9.5 1.755, 0.203, -0.019, 0.62, 3, 22.2, -5.8, 21.07, 248.7, 0.81, 21.11, 0.00, 0.326,1010.42, 7.4, 9.9 … …
The first line is only generated once after the sensor is turned on. The comma separated value descriptions are shown in the following table.
Table 7-3: Data description
Description
1
Internal use
2
Internal use
3
Internal use
4
Grip
Road condition index:
1 = dry
2 = moist
5
3 = wet
4 = slush
5 = ice
6 = snow/frost
Unit Typical value N/A 0.031 N/A 0.107 N/A -0.002 unitless 0.60
unitless 3
SurfaceVue 10 14
Table 7-3: Data description
Description
Unit
6
Air temperature
°C
7
Dew point
°C
8
Road temperature
°C
9
Internal use
N/A
10
Internal use
N/A
11
Ground temperature
°C
12
Ice thickness
mm
13
Water depth
mm
14
Barometric pressure
hPa
15
Wind speed
m/s
16
10-minute maximum wind gust m/s
Typical value 22.3 -5.8 21.13 248.7 0.71 21.11 0.00 1.040 1010.47 7.3 8.7
8. Maintenance
DANGER: Before attempting any maintenance on the sensor, refer to the Safety section. Study the sections on working at height, use of batteries, and exposure to radio transmitters.
CAUTION: Before proceeding with any maintenance, always retrieve the data first.
CAUTION: Always disconnect the SurfaceVue 10 from the data logger or the connector before disassembling.
Recommended equipment and supplies:
l 7 mm (9/32 in) hex tool or slotted screwdriver (not supplied) for adjusting band clamp l 13 mm (1/2 in) spanner, wrench, or socket to allow sensor angle adjustment l Clean lint-free cloths or lens tissues l Bulb air blower suitable for camera lenses
SurfaceVue 10 15
l Cotton buds or swabs l Electronics-grade alcohol or suitable glass cleaner l Distilled water The SurfaceVue 10 is designed to require minimal annual maintenance. Recommended maintenance includes: l Check the cleanness of the surface-condition sensor window. Use a bulb air blower to
remove any large contaminants from the lens. Clean the lens with a lint free lens cloth or lens tissue. Detergents suitable for cleaning glass can be used, when necessary. l Check the window of the surface-temperature sensor. Use a bulb air blower to remove any large contaminants from the lens. Use a long cotton swab and wet with distilled water to clean the window and then wipe it dry. l Check the air temperature and relative humidity measurements. If you suspect an error in either of those measurements, or the dew point calculation, the sensor may need to be serviced by the manufacturer. l Check the calibration. See Calibration (p. 17) for more information.
SurfaceVue 10 16
9. Calibration
There are several settings in the SurfaceVue 10 sensor. However, only the Grip reading of a fully dry surface is relevant; it should read close to 0.81. The other sensor readings are factory calibrated for specified performance. If there is a need to adjust these readings, consult Campbell Scientific. The SurfaceVue 10 is factory calibrated for a dry road surface at a distance of about 5 m from the sensor to the measurement spot. When the calibration is correct and the sensor window is clean, the Road condition index should report Dry and Grip should be near 0.81 for a completely dry surface.
NOTE: It is a good practice to recalibrate the sensor after installation.
9.1 While connected to Campbell Scientific data logger
To calibrate the sensor using the program provided, and when the surface is known to be dry, set the CalDryFlag to true. For more information, see CRBasic programming (p. 12).
9.2 While connected directly to a computer
Tera Term (www.teraterm.org ) or similar software can be used on a computer to communicate with the SurfaceVue 10. A compatible RS-232 to USB serial adapter is used to connect the sensor to the computer.
1. Connect the sensor RS-232 Rx, Tx, and ground wires to the serial converter connected to a computer.
2. Connect the power wires to an appropriate power supply. 3. Open Tera Term or similar software and configure it to an RS-232 serial connection at
38400 baud and 8N1. 4. Open the connection. 5. To start communicating with the sensor send it the “open<enter><esc>” command. It
should respond with “>” and “OPENED”. Repeat the command if this does not work.
SurfaceVue 10 17
6. To calibrate the sensor on a dry road surface, type “dry 2 <enter>”.
7. The sensor will automatically close the connection and start reporting the data string.
Example:
open > OPENED >dry 2 DRY = 0.603 0.075 > CLOSED RCM411R test 0.87 2022-01-05 0.031, 0.107, -0.002, 0.60, 3, 22.3, -5.8, 21.13, 248.7, 0.71, 21.11, 0.00, 1.040,1010.47, 7.3, 8.7 0.029, 0.107, -0.002, 0.60, 3, 22.2, -5.8, 21.16, 248.7, 0.70, 21.11, 0.00, 1.047,1010.53, 7.3, 8.7
10. Troubleshooting
Table 10-1: Symptoms, possible causes, and solutions
Symptom
Possible cause
Solution
The friction value of dry pavement has decreased over time.
This can indicate that the optics are dirty, or the pavement has changed.
Clean the optics then initiate a dry calibration. See Maintenance (p. 15) and Calibration (p. 17).
Check that the main sensor cable
connector on the back of the
condition unit (CS991) is installed
correctly and hand tight.
No data is being reported or there are NAN readings in
real-time or stored data.
This indicates the terminal program or data logger is not receiving data from the SurfaceVue 10.
Check that the sensor is wired to the
correct terminals specified by SerialIn(). See Wiring (p. 10)
Check the voltage to the sensor
with a digital voltage meter. See the
Supply voltage range in Technical
specifications (p. 4).
SurfaceVue 10 18
Table 10-1: Symptoms, possible causes, and solutions
Symptom
Possible cause
Data string is reporting data from the surface condition sensor but not from the temperature sensor.
The connection cable between the sensors may be connected incorrectly.
Solution
Remove the surface-condition sensor end cap and check that the connector is installed correctly and hand tight.
11. Frequently asked questions
11.1 How do I calculate the distance from the sensor to the measuring area on the road?
Figure 11-1. Right triangle Where:
c = distance from the head of the sensor to the measuring area on the road b = distance from the measuring area on the road to the base below the head of the sensor a = distance from the base below the head of the sensor to the head of the sensor = measuring angle
1. Measure the distances a and b. 2. Calculate c using the following equation:
3. See Technical specifications (p. 4) for Measurement range requirements.
SurfaceVue 10 19
11.2 How do I calculate the installed angle?
1. Refer to previously shown Figure 11-1 (p. 19) 2. Calculate using the following equation:
3. See Technical specifications (p. 4) for Installation angle requirements.
11.3 Can I calibrate the sensor remotely?
Yes, the SurfaceVue 10 can be calibrated remotely when connected to a Campbell Scientific data logger. The calibration must be completed when the road is dry. This can be determined from data of other sensors located on the weather station or from a camera image if available. See Calibration (p. 17).
11.4 What is the definition of ground temperature?
Ground temperature is the temperature below the road surface at 6 cm (2.4 in) depth.
11.5 What type of structure should the SurfaceVue 10 be mounted to?
The SurfaceVue 10 is typically mounted to a large vertical pole or lattice tower. The sensor includes mounting brackets and band straps to be mounted to an 8 to 18 cm (3 to 7 inch) pole. For lattice tower mounting options please consult with Campbell Scientific.
11.6 Does the SurfaceVue 10 need to be continuously powered?
Yes, the SurfaceVue 10 needs continuous power to effectively measure the surface state, friction value, modeled wind, and modeled ground temperature.
SurfaceVue 10 20
Limited warranty
Covered equipment is warranted/guaranteed against defects in materials and workmanship under normal use and service for the period listed on your sales invoice or the product order information web page. The covered period begins on the date of shipment unless otherwise specified. For a repair to be covered under warranty, the following criteria must be met:
1. There must be a defect in materials or workmanship that affects form, fit, or function of the device.
2. The defect cannot be the result of misuse.
3. The defect must have occurred within a specified period of time; and
4. The determination must be made by a qualified technician at a Campbell Scientific Service Center/ repair facility.
The following is not covered:
1. Equipment which has been modified or altered in any way without the written permission of Campbell Scientific.
2. Batteries; and
3. Any equipment which has been subjected to misuse, neglect, acts of God or damage in transit.
Campbell Scientific regional offices handle repairs for customers within their territories. Please see the back page of the manual for a list of regional offices or visit www.campbellsci.com/contact to determine which Campbell Scientific office serves your country. For directions on how to return equipment, see Assistance.
Other manufacturer’s products, that are resold by Campbell Scientific, are warranted only to the limits extended by the original manufacturer.
CAMPBELL SCIENTIFIC EXPRESSLY DISCLAIMS AND EXCLUDES ANY IMPLIED WARRANTIES OF
MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Campbell Scientific hereby disclaims, to the fullest extent allowed by applicable law, any and all warranties and conditions with respect to the products, whether express, implied, or statutory, other than those expressly provided herein.
Campbell Scientific will, as a default, return warranted equipment by surface carrier prepaid. However, the method of return shipment is at Campbell Scientific’s sole discretion. Campbell Scientific will not reimburse the claimant for costs incurred in removing and/or reinstalling equipment. This warranty and the Company’s obligation thereunder is in lieu of all other
warranties, expressed or implied, including those of suitability and fitness for a particular purpose. Campbell Scientific is not liable for consequential damage.
In the event of any conflict or inconsistency between the provisions of this Warranty and the provisions of Campbell Scientific’s Terms, the provisions of Campbell Scientific’s Terms shall prevail. Furthermore, Campbell Scientific’s Terms are hereby incorporated by reference into this Warranty. To view Terms and conditions that apply to Campbell Scientific, Logan, UT, USA, see Terms and Conditions . To view terms and conditions that apply to Campbell Scientific offices outside of the United States, contact the regional office that serves your country.
Assistance
Products may not be returned without prior authorization. Please inform us before returning equipment and obtain a return material authorization (RMA) number whether the repair is under warranty/guarantee or not. See Limited warranty for information on covered equipment.
Campbell Scientific regional offices handle repairs for customers within their territories. Please see the back page of the manual for a list of regional offices or visit www.campbellsci.com/contact to determine which Campbell Scientific office serves your country.
When returning equipment, a RMA number must be clearly marked on the outside of the package. Please state the faults as clearly as possible. Quotations for repairs can be given on request.
It is the policy of Campbell Scientific to protect the health of its employees and provide a safe working environment. In support of this policy, when equipment is returned to Campbell Scientific, Logan, UT, USA, it is mandatory that a “Declaration of Hazardous Material and Decontamination” form be received before the return can be processed. If the form is not received within 5 working days of product receipt or is incomplete, the product will be returned to the customer at the customer’s expense. For details on decontamination standards specific to your country, please reach out to your regional Campbell Scientific office.
NOTE: All goods that cross trade boundaries may be subject to some form of fee (customs clearance, duties or import tax). Also, some regional offices require a purchase order upfront if a product is out of the warranty period. Please contact your regional Campbell Scientific office for details.
Safety
DANGER — MANY HAZARDS ARE ASSOCIATED WITH INSTALLING, USING, MAINTAINING, AND WORKING ON OR AROUND TRIPODS, TOWERS, AND ANY ATTACHMENTS TO TRIPODS AND TOWERS SUCH AS SENSORS, CROSSARMS, ENCLOSURES, ANTENNAS, ETC. FAILURE TO PROPERLY AND COMPLETELY ASSEMBLE, INSTALL, OPERATE, USE, AND MAINTAIN TRIPODS, TOWERS, AND ATTACHMENTS, AND FAILURE TO HEED WARNINGS, INCREASES THE RISK OF DEATH, ACCIDENT, SERIOUS INJURY, PROPERTY DAMAGE, AND PRODUCT FAILURE. TAKE ALL REASONABLE PRECAUTIONS TO AVOID THESE HAZARDS. CHECK WITH YOUR ORGANIZATION’S SAFETY COORDINATOR (OR POLICY) FOR PROCEDURES AND REQUIRED PROTECTIVE EQUIPMENT PRIOR TO PERFORMING ANY WORK.
Use tripods, towers, and attachments to tripods and towers only for purposes for which they are designed. Do not exceed design limits. Be familiar and comply with all instructions provided in product manuals. Manuals are available at www.campbellsci.com You are responsible for conformance with governing codes and regulations, including safety regulations, and the integrity and location of structures or land to which towers, tripods, and any attachments are attached. Installation sites should be evaluated and approved by a qualified engineer. If questions or concerns arise regarding installation, use, or maintenance of tripods, towers, attachments, or electrical connections, consult with a licensed and qualified engineer or electrician.
General l Protect from over-voltage. l Protect electrical equipment from water. l Protect from electrostatic discharge (ESD). l Protect from lightning. l Prior to performing site or installation work, obtain required approvals and permits. Comply with all governing structure-height regulations, such as those of the FAA in the USA. l Use only qualified personnel for installation, use, and maintenance of tripods and towers, and any attachments to tripods and towers. The use of licensed and qualified contractors is highly recommended. l Read all applicable instructions carefully and understand procedures thoroughly before beginning work. l Wear a hardhat and eye protection, and take other appropriate safety precautions while working on or around tripods and towers. l Do not climb tripods or towers at any time, and prohibit climbing by other persons. Take reasonable precautions to secure tripod and tower sites from trespassers. l Use only manufacturer recommended parts, materials, and tools.
Utility and Electrical l You can be killed or sustain serious bodily injury if the tripod, tower, or attachments you are installing, constructing, using, or maintaining, or a tool, stake, or anchor, come in contact with overhead or underground utility lines. l Maintain a distance of at least one-and-one-half times structure height, 6 meters (20 feet), or the distance required by applicable law, whichever is greater, between overhead utility lines and the structure (tripod, tower, attachments, or tools). l Prior to performing site or installation work, inform all utility companies and have all underground utilities marked. l Comply with all electrical codes. Electrical equipment and related grounding devices should be installed by a licensed and qualified electrician. l Only use power sources approved for use in the country of installation to power Campbell Scientific devices.
Elevated Work and Weather l Exercise extreme caution when performing elevated work. l Use appropriate equipment and safety practices. l During installation and maintenance, keep tower and tripod sites clear of un-trained or non-essential personnel. Take precautions to prevent elevated tools and objects from dropping. l Do not perform any work in inclement weather, including wind, rain, snow, lightning, etc.
Internal Battery l Be aware of fire, explosion, and severe-burn hazards. l Misuse or improper installation of the internal lithium battery can cause severe injury.
l Do not recharge, disassemble, heat above 100 °C (212 °F), solder directly to the cell, incinerate, or expose contents to water. Dispose of spent batteries properly.
Use and disposal of batteries l Where batteries need to be transported to the installation site, ensure they are packed to prevent the battery terminals shorting which could cause a fire or explosion. Especially in the case of lithium batteries, ensure they are packed and transported in a way that complies with local shipping regulations and the safety requirements of the carriers involved. l When installing the batteries follow the installation instructions very carefully. This is to avoid risk of damage to the equipment caused by installing the wrong type of battery or reverse connections. l When disposing of used batteries, it is still important to avoid the risk of shorting. Do not dispose of the batteries in a fire as there is risk of explosion and leakage of harmful chemicals into the environment. Batteries should be disposed of at registered recycling facilities.
Avoiding unnecessary exposure to radio transmitter radiation l Where the equipment includes a radio transmitter, precautions should be taken to avoid unnecessary exposure to radiation from the antenna. The degree of caution required varies with the power of the transmitter, but as a rule it is best to avoid getting closer to the antenna than 20 cm (8 inches) when the antenna is active. In particular keep your head away from the antenna. For higher power radios (in excess of 1 W ERP) turn the radio off when servicing the system, unless the antenna is installed away from the station, e.g. it is mounted above the system on an arm or pole.
Maintenance l Periodically (at least yearly) check for wear and damage, including corrosion, stress cracks, frayed cables, loose cable clamps, cable tightness, etc. and take necessary corrective actions. l Periodically (at least yearly) check electrical ground connections.
WHILE EVERY ATTEMPT IS MADE TO EMBODY THE HIGHEST DEGREE OF SAFETY IN ALL CAMPBELL SCIENTIFIC PRODUCTS, THE CUSTOMER ASSUMES ALL RISK FROM ANY INJURY RESULTING FROM IMPROPER INSTALLATION, USE, OR MAINTENANCE OF TRIPODS, TOWERS, OR ATTACHMENTS TO TRIPODS AND TOWERS SUCH AS SENSORS, CROSSARMS, ENCLOSURES, ANTENNAS, ETC.
Campbell Scientific Regional Offices
Australia
Location: Phone: Email: Website:
Garbutt, QLD Australia 61.7.4401.7700 info@campbellsci.com.au www.campbellsci.com.au
Brazil
Location: Phone: Email: Website:
São Paulo, SP Brazil 11.3732.3399 vendas@campbellsci.com.br www.campbellsci.com.br
Canada
Location: Phone: Email: Website:
Edmonton, AB Canada 780.454.2505 dataloggers@campbellsci.ca www.campbellsci.ca
China
Location: Phone: Email: Website:
Beijing, P. R. China 86.10.6561.0080 info@campbellsci.com.cn www.campbellsci.com.cn
Costa Rica
Location: Phone: Email: Website:
San Pedro, Costa Rica 506.2280.1564 info@campbellsci.cc www.campbellsci.cc
France
Location: Phone: Email: Website:
Montrouge, France 0033.0.1.56.45.15.20 info@campbellsci.fr www.campbellsci.fr
Germany
Location: Phone: Email: Website:
Bremen, Germany 49.0.421.460974.0 info@campbellsci.de www.campbellsci.de
India
Location: Phone: Email: Website:
New Delhi, DL India 91.11.46500481.482 info@campbellsci.in www.campbellsci.in
Japan
Location: Phone: Email: Website:
Kawagishi, Toda City, Japan 048.400.5001 jp-info@campbellsci.com www.campbellsci.co.jp
South Africa
Location: Phone: Email: Website:
Stellenbosch, South Africa 27.21.8809960 sales@campbellsci.co.za www.campbellsci.co.za
Spain
Location: Phone: Email: Website:
Barcelona, Spain 34.93.2323938 info@campbellsci.es www.campbellsci.es
Thailand
Location: Phone: Email: Website:
Bangkok, Thailand 66.2.719.3399 info@campbellsci.asia www.campbellsci.asia
UK
Location: Phone: Email: Website:
Shepshed, Loughborough, UK 44.0.1509.601141 sales@campbellsci.co.uk www.campbellsci.co.uk
USA
Location: Phone: Email: Website:
Logan, UT USA 435.227.9120 info@campbellsci.com www.campbellsci.com
Documents / Resources
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Campbell SCIENTIFIC SurfaceVue 10 Road Surface Condition Sensor [pdf] Instruction Manual SurfaceVue 10 Road Surface Condition Sensor, SurfaceVue 10, Road Surface Condition Sensor, Surface Condition Sensor, Condition Sensor, Sensor |