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Summary of Contents for OTT Lufft ARS31Pro
- Page 1 ARS31Pro Active Road Sensor Operational Manual...
- Page 2 70736 Fellbach Germany +49 711 51822 -0 met-info@otthydromet.com www.otthydromet.com All rights reserved. All content is the intellectual property of OTT HydroMet. Reprinting, duplication and translation (even as excerpts) are only permitted with the prior written consent of OTT HydroMet. Subject to technical change.
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Page 3: Table Of Contents
Table of contents Scope of supply Order numbers and variant code Product variants Accessories and spare parts 2.2.1 Accessories 2.2.2 Spare parts Calibration About this manual Other applicable documents and software Abbreviations General signs and symbols Explanation of warnings General safety instructions Intended use Potential misuse Personnel qualification... - Page 4 7.2.3 Connecting power supply 7.2.4 Electrical connections 7.2.5 Supply voltage 7.2.6 RS485 Interface 7.2.7 Connecting ISOCON-UMB converter 7.2.8 Installing surge protection Commissioning Device set-up Configuration and testing 8.2.1 Factory settings Selecting device Specific settings for ARS31Pro-UMB Specific settings for ARS31-UMB Testing Maintenance Maintenance schedule...
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Page 5: Scope Of Supply
1 Scope of supply The following items are included with delivery: – Active road sensor – Installation aid <5>... -
Page 6: Order Numbers And Variant Code
2 Order numbers and variant code 2.1 Product variants Variant Order number ARS31Pro-UMB, 50 m cable length 8810.U051 ARS31-UMB, 50 m cable length 8610.U050 2.2 Accessories and spare parts 2.2.1 Accessories Item Order number Power supply unit 24 V/100 VA 8366.USV1 ISOCON-UMB 8160.UISO Surge protection 8379.USP DACON8-UMB 8160.UDAC... -
Page 7: About This Manual
3 About this manual 3.1 Other applicable documents and software The following documents contain further information on installation, maintenance and calibration: – Operating Manual UMB ISO Converter ISOCON – Operating instructions surge protection The following documents and software can be downloaded at www.lufft.com: –... -
Page 8: Explanation Of Warnings
3.4 Explanation of warnings To avoid personal injury and material damage, you must observe the safety information and warnings in the operating manual. The warnings use the following danger levels: WARNING WARNING This indicates a potentially hazardous situation. If the hazardous situation is not avoided, it may result in death or serious injuries. -
Page 9: General Safety Instructions
4 Do not change or convert the product in any way. 4 Do not perform any repairs yourself. 4 Get OTT HydroMet to examine and repair any defects. 4 Ensure that the product is correctly disposed of. Do not dispose of it in household waste. -
Page 10: Working On Roadways
4.7 Working on roadways The device is installed in road- and runways. Special safety regulations apply to prevent accidents and injuries. 4 Observe the national and local safety regulations for construction work. 4.8 Certification 4.8.1 Europe, USA and Canada CE (EU) The equipment meets the essential requirements of EMC Directive 2014/30/EU. -
Page 11: Product Description
5 Product description 5.1 Design and function The active road sensor determines the freezing temperature of a liquid on the road surface through active cooling and heating. The device can be used to measure the salt concentration (NaCl, CaCl and MgCl), product concentration (potassium acetate, potassium) and freezing temperature (independent of mixture of salt). -
Page 12: Transport, Storage, And Unpacking
6 Transport, storage, and unpacking 6.1 Unpacking 4 Carefully remove the product from the packaging. 4 Check that the delivery is complete and undamaged. 4 If you find any damage or if the delivery is incomplete, then immediately contact the supplier and manufacturer. -
Page 13: Installation
7 Installation 7.1 Mechanical installation 7.1.1 Preparing a site Special local, state or national regulations apply for working in and on roadways. Observe these regulations and prepare the intended installation area for the sensor accordingly . The device must be installed in the center of the road lane. On two-lane roads the device is installed in the left-hand lane. -
Page 14: Installing Device
External temperature sensor Casting resin concrete (only ARS31Pro-UMB) 4 For the device: mark and drill a hole with a diameter of 16 cm and depth of 6 cm into the road surface. 4 For the connection cable: cut a slit with the width of 2 cm and depth of 5 cm into the road surface. For the ARS31Pro-UMB an external temperature sensor is installed: 4 For the temperature sensor: drill a hole with a diameter of 9 cm and depth of 5 cm into the road surface. -
Page 15: Electrical Installation
If the cable sheathing or the temperature sensor is defective, water can enter the device and damage it. 4 Ensure that the cable connections are neither opened nor damaged. 4 Do not install the device with a damaged cable. 4 Have repairs carried out by OTT HydroMet service personnel. <15>... -
Page 16: Extending Supply Cable
4 Place the supply cable in a protective tube. 4 Avoid tensile stress on the cables. 7.2.2 Extending supply cable Shortening the supply cable is only permitted at the cabinet end of the cable. The loop impedance of the entire cable must not exceed 5 Ohm. -
Page 17: Connecting Power Supply
RS485 termination resistance required means that a resistance of 120 Ohm should be connected parallel to the RS485 2-wire interface, either at the sensor input port or at muffle position. Recommended extension cable: A-2YF(L)2Y Nx2x0.8 or similar. Core pair 2x (2 times) means 2 pair of wires, e.g. 2x2x0.8, because 2 individual wires are 1 pair for the power supply (+ and -). 7.2.3 Connecting power supply The road sensor supply cable is connected to the power supply in the control panel. -
Page 18: Supply Voltage
Connection of color or numerically coded cables 7.2.5 Supply voltage The minimum supply voltage for the device is 24 V DC 10 % (for a cable length 15 m) and the maximum is ± ≤ 28 V DC. Depending on the cable length, the power supply varies: Cable length Recommended power supply ≤ 15 m... -
Page 19: Installing Surge Protection
+12V GND1 +24V GND2 Green: RS485 interface A White: negative supply voltage GND2 Yellow: RS485 interface B Brown: positive supply voltage +24 V 4 Connect the brown, white, green and yellow wires to the ISOCON-UMB converter. 4 Refer to the operating manual UMB ISO converter ISOCON. 7.2.8 Installing surge protection The surge protection serves to protect the device against voltage spikes. -
Page 20: Commissioning
4 If several road sensors are operated on a UMB network, assign a unique device ID to each sensor. 8.2 Configuration and testing For configuration and testing OTT HydroMet Fellbach GmbH provides the proprietary software ConfigTool.NET. ConfigTool.NET can also be used to update the firmware of the device. -
Page 21: Specific Settings For Ars31Pro-Umb
8.4 Specific settings for ARS31Pro-UMB Parameter Description Measurement interval The measurement interval indicates how often a new measurement cycle is started. This value is configurable and can be set at 20, 30 or 60 minutes. Factory setting: 20 minutes Ft data hold after The last identified freezing temperature is delivered for a set interval. - Page 22 Parameter Description If the setting is deactivated by unticking Dynamic dry threshold enabled, the set dry threshold applies. If this value is too high, the device measures during dry conditions, which may lead to incorrect measurements caused by condensation on the device.
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Page 23: Specific Settings For Ars31-Umb
8.5 Specific settings for ARS31-UMB Parameter Description Measurement interval The measurement interval indicates how often a new measurement cycle is started. This value is configurable and can be set at 20, 30 or 60 minutes. Factory setting: 20 minutes Ft data hold after The last identified freezing temperature is delivered for a set interval. -
Page 24: Testing
Parameter Description Freezing temperature limit The freezing temperature limit can be adjusted. After the activation of the freezing temperature limit, the smoothed freezing temperature can transitionally be under the temperature limit (if the freezing temperature was under the configured limit directly before the activation). -
Page 25: Maintenance
9 Maintenance 9.1 Maintenance schedule The frequency of cleaning is dependent upon the local weather and environmental conditions. The following maintenance intervals are recommended: Interval Activity Performed by Annually 4 Carry out a visual inspection of the housing. Operator 4 Clean the sensor surface using isopropanol and a lint-free cloth if dirty. - Page 26 During firmware upload the operating temperature must be between 0 to +60 °C . <26>...
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Page 27: Troubleshooting
10 Troubleshooting 10.1 Error elimination Error Possible cause Corrective action Device does not allow polling or Dummy cover installed 4 Check if the sensor cap is installed. does not respond Device does not allow polling or Device does not work properly 4 Check the power supply. - Page 28 UMB error code 0x54 on 4 Check if water has penetrated the uncorrected freezing sensor. temperature channels Device transmits an unknown – 4 Report any malfunction to the error value representative of OTT HydroMet. *available from firmware version 10.9. <28>...
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Page 29: Repair
11 Repair 11.1 Customer support 4 Have repairs carried out by OTT HydroMet service personnel. 4 Only carry out repairs yourself, if you have first consulted OTT HydroMet. 4 Contact your local representative: www.otthydromet.com/en/contact-us 4 Include the following information: – instrument model –... -
Page 30: Notes On Disposing Of Old Devices
In accordance with the German Electrical and Electronic Equipment Act (ElektroG; national implementation of EU Directive 2012/19/EU), OTT HydroMet takes back old devices in the Member States of the European Union and disposes of them in the proper manner. The devices that this concerns are labeled with the following symbol:... -
Page 31: Technical Data
13 Technical data 13.1 General technical data Specification Value Protection class III (SELV) Protection type IP68 Operating temperature range 40 to 80 °C 0 to 60 °C for firmware update only Temperature range for -30 to +5 °C (adjustable up to 10 °C) measurement of freezing temperature and threat of icing in the road surface Humidity range 0 to 100 %... -
Page 32: Measuring Range And Accuracy
Specification Value Weight ARS31-UMB Approx. 900 g (without cable) 13.5 Measuring range and accuracy Freezing temperature Specification Value Measuring range 40 °C to 0 °C, however Tg 20 °C ≥ Resolution 0.1 °C Accuracy 0.5 °C for Tg 15 °C (with NaCl, according to CEN/TC 15518-4) ± >... - Page 33 Road surface temperature ARS31Pro-UMB Specification Value Measurement process Measuring range 40 °C to 80 °C Resolution 0.1 °C Accuracy 0.2 °C ( 10 °C to 10 °C), ± otherwise 0.5 °C ± Road surface temperature ARS31-UMB Specification Value Measurement process Measuring range 40 °C to 80 °C Resolution 0.1 °C Accuracy Quantitative statement only as errors arise due to self-heating <33>...
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- Page 36 Contact Information...
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