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Summary of Contents for Dyacon UA-1
- Page 1 UA-1 Ultrasonic Anemometer Manual 57-6108 Rev A...
- Page 2 This page intentionally left blank. Page 2/29...
- Page 3 Contents 1.0 NOTICES...............................5 1.1.1 © Copyright 2022 Dyacon, Inc....................5 1.1.2 Manufacturer..........................5 1.1.3 Declarations...........................6 1.1.4 Warranty Information......................6 2.0 UA-1 INTRODUCTION........................8 2.1 Scope..............................8 2.2 Technical Support..........................8 2.2.1 Contact Information.......................8 2.2.2 Phone / Email Support......................8 3.0 PRODUCT OVERVIEW........................9 3.1 Product Description..........................9 3.2 What Do You Get?.........................10 3.3 What You Need..........................10...
- Page 4 7.6 Environmental..........................28 7.7 Accessories.............................28 8.0 REVISION HISTORY........................29 Page 4/29...
- Page 5 Dyacon, Inc. The information in this manual has been carefully checked and is believed to be accurate. However, Dyacon, Inc. assumes no responsibility for any inaccuracies that may be contained in this manual. All information is subject to change.
- Page 6 Removal of the original serial number label or reprogramming of the electronic serial number voids any warranty on the device. Dyacon will not repair or update products if the serial number label missing or legitimate ownership cannot be verified. Dyacon may not return equipment that is missing serial numbers or where legitimate ownership is in question.
- Page 7 Dyacon or other direct supervision thereof. Page 7/29...
- Page 8 The content of this document is intended for integrators, installers, and users of UA-1 hereinafter referred to as UA or “wind sensor”. This document includes installation instructions, technical specifications, electrical requirements, and data protocol information. Some aspects of the equipment operation may be covered in other documents.
- Page 9 Modbus-RTU protocol over TIA-485-A (RS-485). Consequently, there is no measurement degradation due to cable length. UA-1 is easily mounted on the end of a vertical 3/4” pipe with no additional hardware. Other fittings and mounting adapters may be developed as needed.
- Page 10 In order to utilize the UA-1 you will need the following. 3/4” diameter mounting SCH40/IPS pipe (aluminum, steel, or PVC) Actual outer pipe diameter is 1.04 inch (26.7 mm). The wind sensor fits directly on top of Dyacon Tripod-1 and QDT (Quick-deployment Tripod).
- Page 11 Dyacon crossover can be used for mounting the wind sensor to a horizontal pipe or on a flat surface. Standard structural pipe fittings for 1” schedule 40 pipe are available from hardware suppliers and manufacturers. Hollaender Nu-Rail www.nurail.com J.C. Denier www.denierco.com...
- Page 12 UA-1 is designed to fit on a 3/4” nominal diameter schedule 40 pipe, actual outer diameter of 1.06” (26.9 mm). UA-1 fits on the end of the Dyacon tripod and snaps into the locking button without any tools. (See Image 3.) The data cable may be passed through the center of the mounting pipe or outside of the mounting pipe.
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- Page 15 The alignment hole is sized to accept a large drinking straw such as can be found at McDonald’s, BurgerKing, and other locations that sell ice cream shakes and malts. 3. Tighten the band clamp using the slotted screw driver or nut driver. Page 15/29...
- Page 16 Dyacon sensors use a two-wire configuration. When connecting a Dyacon sensor to a four-wire device, the transmit and receive signals for each signal polarity are tied together. This means that TX+ and RX+ are tied together on the host controller as are TX- and RX-.
- Page 17 Unshielded Drain/earth ground Image 4.1: Wired for Dyacon Control Module The cable terminates inside of the USWD body using a small pluggable terminal block. The UA cover can be removed by removing the screw from the center hold and inserting it partially into the adjacent hole.
- Page 18 232-A (RS-232), TIA-485-A (RS-485), TCP/IP, SMS, and many others. DYACON UA-1 uses Modbus-RTU over RS-485. UA-1 is a slave device and must be connected to a host device, such as a programmable logic controller (PLC), host computer with an RS-485 adapter and Modbus software, or to the DYACON weather station control module.
- Page 19 RX/TX- RS-485 (EIA-485) networks require a termination resistor of 120Ω. A termination resistor is not used on Dyacon sensors. Depending on the bus, a termination resistor may be needed. Additional bias resistors may also be needed. Modbus is based on a bi-directional RS-485 data bus. Since the bus is bi-directional, anytime either the master or slave is not driving the bus, the bus floats.
- Page 20 UA is a Modbus slave device, the Modbus host must request data from the sensor. The following describes the Modbus commands and messages. The basic instructions should be adequate for Modbus host programming. For embedded developers, additional protocol details are contained in the Modbus Appendix. The default configuration: Modbus address Serial Data Parameters...
- Page 21 The following commands can be used to change the serial port parameters of the air sensor. Address Register Access Type Range Data Type Description Read/Write 1-247 16-bit Signed Int Modbus slave address. Default: 1 Read/Write 0 = 1200 bps 16-bit Signed Int Baud rate.
- Page 22 The following error and acknowledgment codes are supported by the UA-1. Not all codes are relevant to each request or command. Supported command error codes are listed for each command. Function Name Description Illegal Function Function not supported or not recognized by the sensor.
- Page 23 Dyacon UA wind sensor uses the Modbus RTU format. The following are the protocol details required for embedded devices to communicate with the Modbus sensor. Notes: • Modbus data uses “big-endian” data format, 0x1234 is sent as 0x12 then 0x34.
- Page 24 Field Name Length Function Example (bytes) Data Slave Address Device address. 0x01 Error Code Error code value. 0x83 Exception Code Error code values (01, 02, 03, 04) 0x01 Error check 0xF080 TX String: 01 83 01 80 F0 Page 24/29...
- Page 25 When UA-1 is used with Dyacon control modules, the instrument data is automatically presented in the form of the selected by the user. When UA-1 is used with a PLC or other host device, the instrumentation data will need to be numerically converted to conventional measurement units. The following conversion values can be performed by the host device.
- Page 26 Ultrasonic anemometers measure wind speed and direction by timing sound propagation through air. The ultrasonic transducers in the sensor individually emit a “click” and each of the other transducers detect the sound. The time delay for the sound to reach the other transducers is affected by air movement.
- Page 27 Operational Range 0 m/s to 45 m/s (o mph to 89 mph)* Starting Threshold 1 m/s (2.2 mph) Resolution 0.1 m/s (0.2 mph) Operational Range Accuracy +/- 1% Sample Rate 1 Hz * Modbus output units are m/s. Miles per hour units are for reference only. Range 0°...
- Page 28 Mounting Hole 26.9 mm (1.06”) dia x 38 mm (1.5”) DP Custom mounting solutions available. Protocols Modbus RTU Slave (RS-485) Half duplex (2-wire) Default 19200, N, 8, 1 Operating Temperature -15°C to 50°C Storage Temperature -15°C to 50°C Operating Humidity 0 to 100% Mounting Custom mounting solutions available.
- Page 29 Description Author Date Initial Release E. Bodrero 2022-08-08 Page 29/29...
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