HK Instruments AVT User Manual
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HK Instruments AVT User Manual

Air velocity transmitter
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AVT air velocity transmitter
USER GUIDE

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Summary of Contents for HK Instruments AVT

  • Page 1 AVT air velocity transmitter USER GUIDE...

  • Page 2: Table Of Contents

    5.4.2 Holding registers..............................21 6 Maintenance..........................23 6.1 Cleaning the probe and the sensor element........................23 7 Disposal............................ 24 8 Warranty policy........................25 Copyright HK Instruments 2023 www.hkinstruments.fi User guide Version 8.2 2023 Informaon is subject to change without prior noce. EN - 1130100000ug...

  • Page 3: IntroducOn

    3 (25) 1 Introduction Thank you for choosing an AVT air velocity transmier. It is an air velocity and temperature transmier. The -MOD models have Modbus communicaon instead of analogue outputs. Other models have one analogue air velocity output and one analogue temperature output.

  • Page 4: DescripOn Of The Product

    Relay (-R models) Measurement range selecon jumpers (excluding -D models) Modbus terminaon jumper (-MOD models) Relay connector (-R models) Copyright HK Instruments 2023 www.hkinstruments.fi User guide Version 8.2 2023 Informaon is subject to change without prior noce. EN - 1130100000ug...

  • Page 5: Technical SpecificaOns

    IP protecon class IP54, cable downwards Wire 0.2...1.5 mm (24...16 AWG) Cable gland M16 (2 x M16: -R models) Copyright HK Instruments 2023 www.hkinstruments.fi User guide Version 8.2 2023 Informaon is subject to change without prior noce. EN - 1130100000ug...

  • Page 6: Dimensions

    S.I. 2013 No. 3113 2014/35/EU S.I. 2016 No. 1101 2.3 Dimensions All dimensions are in millimeters (mm). 168 / 268 / 468 Copyright HK Instruments 2023 www.hkinstruments.fi User guide Version 8.2 2023 Informaon is subject to change without prior noce. EN - 1130100000ug...

  • Page 7: Safety PrecauOns

    Read this user guide carefully before commissioning, using or servicing this device. To avoid any kind of damage to people or property, follow the instrucons carefully. HK Instruments is not liable for any hazards or damages to people or property which are caused by ignoring the using or installaon instrucons.

  • Page 8: Commissioning

    Use the duct flange as a template and mark the screw holes and the probe hole on the duct. Drill the screw holes and the probe hole on the duct. The maximum screw diameter is 4 mm. The probe diameter is 10 mm. Copyright HK Instruments 2023 www.hkinstruments.fi User guide Version 8.2 2023 Informaon is subject to change without prior noce.

  • Page 9: Wiring

    Open the cover. WARNING: Do not open the device cover when the relay mains supply voltage is connected. Always do the commissioning of the device in de-energised relay electricity network. Copyright HK Instruments 2023 www.hkinstruments.fi User guide Version 8.2 2023 Informaon is subject to change without prior noce.

  • Page 10: Modbus Models (-Mod)

    For CE and UKCA compliance, a properly grounded shielding cable is required. Open the cover. Unscrew the strain relief. Route the cables for power in and Modbus communicaon through the cable gland. Copyright HK Instruments 2023 www.hkinstruments.fi User guide Version 8.2 2023 Informaon is subject to change without prior noce.

  • Page 11: SelecNg The Measurement Range

    Models with analogue output signals have two jumpers for output signal mode selecon on the circuit board. Select the voltage (0...10 V) or the current (4...20 mA) output signal mode based on the system requirements. The current output is not scalable. The voltage output is scalable. Copyright HK Instruments 2023 www.hkinstruments.fi User guide Version 8.2 2023 Informaon is subject to change without prior noce.

  • Page 12: Configuring SeNgs Via Device Menu

    See the figure below for the full menu structure for all models excluding the Modbus models (-MOD). For Modbus model menu structure, see secon Available sengs for Modbus on page 17. Copyright HK Instruments 2023 www.hkinstruments.fi User guide Version 8.2 2023 Informaon is subject to change without prior noce.
  • Page 13 T OUT MAX 10 V AVT-D-R RELAY DIR Rise RELAY SP 5 m/s RELAY HYST 0.5 m/s EXIT MENU Copyright HK Instruments 2023 www.hkinstruments.fi User guide Version 8.2 2023 Informaon is subject to change without prior noce. EN - 1130100000ug...

  • Page 14: Available SeNgs For Velocity And Temperature

    You can select the temperature unit for the device display and the temperature output in the TEMP. UNIT menu. The available temperature units are °C and °F. The default value is °C. Copyright HK Instruments 2023 www.hkinstruments.fi User guide Version 8.2 2023 Informaon is subject to change without prior noce.
  • Page 15 You can select a value between 0 V and 10 V. You can adjust the value by 1 V steps. The default value is 0 V. You can select a minimum value that is bigger than the maximum value to reverse the operang direcon. Copyright HK Instruments 2023 www.hkinstruments.fi...

  • Page 16: Relay SeNgs

    RELAY HYST 0.5 m/s 4.6.2.1 Relay SP menu This menu is shown only if the transmier has a relay output (-R models). Copyright HK Instruments 2023 www.hkinstruments.fi User guide Version 8.2 2023 Informaon is subject to change without prior noce.

  • Page 17: Exit Menu View

    4.7.1 Baud rate menu You can select the baud rate in the BAUD RATE menu. The bus speed can be 9600, 19200 or 38400 bits/s. The default baud rate is 19200 bits/s. Copyright HK Instruments 2023 www.hkinstruments.fi User guide Version 8.2 2023 Informaon is subject to change without prior noce.

  • Page 18: Address Menu

    Close the cover. Tighten the cover locking screw (-R models). A. Cover locking screw Make sure that the cover does not open without tools. Copyright HK Instruments 2023 www.hkinstruments.fi User guide Version 8.2 2023 Informaon is subject to change without prior noce.

  • Page 19: Modbus

    The device supports the following Modbus funcon codes. Decimal HexadecimalFuncon 0x03 Read Holding Registers 0x04 Read Input Registers 0x06 Write Single Register 0x10 Write Mulple Registers Copyright HK Instruments 2023 www.hkinstruments.fi User guide Version 8.2 2023 Informaon is subject to change without prior noce. EN - 1130100000ug...

  • Page 20: Modbus Registers

    Ethernet MAC address 1 9909 Ethernet MAC address 2 9910 Ethernet MAC address 3 9911 Wireless MAC address 1 9912 Copyright HK Instruments 2023 www.hkinstruments.fi User guide Version 8.2 2023 Informaon is subject to change without prior noce. EN - 1130100000ug...

  • Page 21: Holding Registers

    Reserved for future use 5...199 MyTool Register Parameter descripon Data type Values Range Default PID in use 0…1 0. no 1. yes Copyright HK Instruments 2023 www.hkinstruments.fi User guide Version 8.2 2023 Informaon is subject to change without prior noce. EN - 1130100000ug...
  • Page 22 Device control data 0…65535 9995...9998 0…65535 Device control header 0…65535 9999 0…65535 Calibraon (reserved) 63000...63999 Firmware update (reserved) 64000...64999 Copyright HK Instruments 2023 www.hkinstruments.fi User guide Version 8.2 2023 Informaon is subject to change without prior noce. EN - 1130100000ug...

  • Page 23: Maintenance

    Important: Do not use too high pressure, touch the sensor element or use other cleaning methods that cause mechanical stress. Mechanical stress damages the sensor element and changes the measurement accuracy of the sensors. Copyright HK Instruments 2023 www.hkinstruments.fi User guide Version 8.2 2023 Informaon is subject to change without prior noce.

  • Page 24: Disposal

    Printed circuit boards need selecve treatment according to IEC 62635 guidelines. To aid recycling, plasc parts are marked with an appropriate idenficaon code. Contact your local HK Instruments distributor for further informaon on environmental aspects and recycling instrucons for professional recyclers.

  • Page 25: Warranty Policy

    me. The warranty includes the repair of a defecve part or device, or if needed, a new part or device, but not installaon or exchange costs. Under no circumstance is the seller liable for damages compensaon for indirect damage. Copyright HK Instruments 2023 www.hkinstruments.fi User guide Version 8.2 2023 Informaon is subject to change without prior noce.

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