Related Manuals for Onicon Air Monitor VELTRON III
Summary of Contents for Onicon Air Monitor VELTRON III
- Page 1 VELTRON III VELTRON III Pressure & Flow Transmitter Pressure & Flow Transmitter Installation and Operation Manual Installation and Operation Manual DOC-0005742 Rev.A...
- Page 2 VELTRON III SAFETY INFORMATION The VELTRON III Pressure and Flow Transmitter was calibrated at the factory before shipment. To ensure correct use of the system, please read this manual thoroughly. Regarding this Manual: • This manual should be passed on to the end user. •...
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Page 3: Table Of Contents
VELTRON III TABLE OF CONTENTS SECTION 1.0 GENERAL INFORMATION ......................... 5 1.1 PURPOSE OF THIS MANUAL ..............................5 1.2 TYPICAL AIRFLOW MEASUREMENT SYSTEM INSTALLATIONS .................5 1.3 STANDARD FEATURES AND SPECIFICATIONS ........................7 1.4 MODEL NUMBERING CODIFICATION ...........................8 1.5 CHECKING THAT YOU RECEIVED EVERYTHING........................9 1.6 WORKING ENVIRONMENT .................................9 1.7 SERIAL NUMBER ....................................9 SECTION 2.0 INSTALLATION.......................... - Page 4 VELTRON III SECTION 6.0 COMMUNICATIONS......................... 33 6.1 BACNET MS/TP ....................................33 6.1.1 BACnet Object Types ................................. 33 6.1.2 Protocol Implementation Statement .......................... 33 6.1.3 Standard BACnet Objects Supported ......................... 34 6.1.4 Analog Input Object ................................35 6.1.5 BACnet Analog Inputs ..............................35 6.2 MODBUS RTU ....................................
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Page 5: Section 1.0 General Information
VELTRON III SECTION 1.0 GENERAL INFORMATION Thank you for purchasing the VELTRON III Pressure and Flow Transmitter. As our valued customer, Air Monitor’s commitment to you is to provide quality service and support while continuing to off er you accurate, reliable products to meet your fl... - Page 6 VELTRON III 1.2 TYPICAL AIRFLOW MEASUREMENT SYSTEM INSTALLATIONS (CONTINUED) Single Airfl ow Measurement System The single channel confi guration is used for one installation location in a variety of duct confi gurations, primarily used for supply or return airfl ow. Diff erential pressure measurement probes are paired with the VELTRON III transmitter to provide DUCTED a complete airfl...
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Page 7: Standard Features And Specifications
VELTRON III 1.3 STANDARD FEATURES AND SPECIFICATIONS* VELTRON III TRANSMITTER PERFORMANCE PRESSURE ACCURACY ± 0.4% of reading from 0.10 to 5.0 In W.C. ± 0.75% of reading from 5.0 to 10.0 In W.C. SYSTEM ACCURACY ± 3% of reading when combined with Air Monitor Probes. TEMPERATURE ±... -
Page 8: Model Numbering Codification
VELTRON III 1.4 MODEL NUMBERING CODIFICATION VELTRON III-ABCD-EFGH A = Model Confi gurations 2 = Single Channel, Single System 6 = Dual Channel, Split System 8 = Dual Channel, Dual (Separate) Systems B = Enclosure 1 = NEMA 1 Aluminum Enclosure 2 = NEMA 4X Poly Enclosure with window 3 = NEMA 4X Poly Enclosure, no window 4 = NEMA 4X Poly Enclosure, no window with heater... -
Page 9: Checking That You Received Everything
VELTRON III 1.5 CHECKING THAT YOU RECEIVED EVERYTHING Carefully open the VELTRON III shipping container(s) and remove all equipment. Inspect equipment for any damage. If damaged, contact Air Monitor and your freight company. Verify that the following items have been shipped: •... -
Page 10: Section 2.0 Installation
VELTRON III SECTION 2.0 INSTALLATION The VELTRON III pressure & fl ow transmitter should be installed by experienced HVAC technicians and others with related knowledge and experience with airfl ow systems. Air Monitor support personnel are available to assist with technical recommendations and to provide guidance by telephone and/or e-mail. -
Page 11: Transmitter Dimensions
Pressure and Flow Transmitter 9.1" 10.3" 11.4" 11.2" Air Monitor Precision Airflow Measurement An ONICON Brand ON/OFF 8.3" 9.3" 3.1" 5.3" 2.1.3 Transmitter Installation Find an easily accessible location where electrical connections can be made and display readings can be taken from the fl... -
Page 12: Transmitter Wiring Connections
VELTRON III 2.1.4 Transmitter Wiring Connections RESET TERM BIAS TERM BIAS RTD 1 RTD 2 AO1 / AO2 AO3 / AO4 BACnet 24 V INPUT PWR Rb2 Rb1 Ra Rb2 Rb1 Ra + com / + com + com / + com D+ D- G SH L N G TERM... - Page 13 VELTRON III 2.1.4 Transmitter Wiring Connections (Continued) A. Power/Signal Connections Input Power Requirements: • 24 VAC, 15VA @ 24 VAC, 40 VA with heater • 24 VDC, 10W @ 24 VDC, 35W with heater TERM BIAS RTD 1 RTD 2 AO1 / AO2 AO3 / AO4 BACnet...
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Page 14: Airflow Sensor
VELTRON III 2.2 AIRFLOW SENSOR 2.2.1 Airfl ow Sensor Process Connections Air Monitor recommends that signal tubing between the transmitter enclosure and all sensors be stainless steel or copper of the appropriate size. Use tees or manifolds to combine multiple sensors into single high and low pressure lines running to the transmitter’s channel fi... -
Page 15: Temperature Sensors
VELTRON III 2.3 TEMPERATURE SENSORS Temperature sensors RTD(s) provide ambient air temperature for density correction calculations. When the VELTRON III is provided with a NEMA 1 enclosure, the sensor may be installed in the airfl ow stream or outside the inlet in a shaded area. -
Page 16: Temperature Sensor (Rtd) Input Connections
VELTRON III 2.3.2 Temperature Sensor (RTD) Input Connections TERM BIAS RTD 1 RTD 2 AO1 / AO2 AO3 / AO4 BACnet 24 V INPUT PWR Rb2 Rb1 Ra Rb2 Rb1 Ra + com / + com + com / + com D+ D- G SH L N G 2X CUSTOMER... -
Page 17: Section 3.0 Operation
VELTRON III SECTION 3.0 OPERATION 3.1 START - UP Press the power button located in the lower left corner of the cover. You will see the current version of the software and the company logo displayed at power-up. Flow data will be displayed after a brief pause. Information shown on this screen (fl... -
Page 18: Configuration
VELTRON III 3.2 CONFIGURATION The user interface consists of 4 push-buttons used for programming the transmitter. The displayed information is dependent on the factory confi guration of the VELTRON III. The transmitter confi gurations are: Single Channel, Single System – Two transducers in series (stacked) to extend the range Dual Channel, Split System - Two pairs of transducers in parallel to allow the addition or subtraction of fl... -
Page 19: Entering The Programming Menus
VELTRON III 3.4 ENTERING THE PROGRAMMING MENUS Press ENT at any time to access the programming menus. If the password has been Password set previously, the following screens will be displayed. Password Menu Enter the password and you will be brought to the menus selection Enter screen. -
Page 20: Section 4.0 Main Menu
VELTRON III SECTION 4.0 MAIN MENU Single Main menu functions are used to confi gure transmitter settings common to Main Menu Single Channel, Single System Confi guration. Flow Settings Display Settings Network Configuration Set Password Restore Factory Settings Product Information Sensor Status Board Data Analog Output Test... -
Page 21: Flow Settings
VELTRON III 4.1 FLOW SETTINGS Flow settings will set the engineering units for the whole system. You cannot individually change units on other menu pages; for example, if you set the Flow Settings units to be in US and the velocity to be in FPM, the lockdown (low fl ow cut-off ) Units System settings will be in FPM. -
Page 22: Network Configuration
VELTRON III 4.3 NETWORK CONFIGURATION This menu allows the user to set up the serial communications network. It can be Network Configuration used to confi gure the device for BACnet MS/TP or MODBUS RTU networks. When the network is enabled, the user will see the following icon next to the “System Type BACnet/MSTP Run”... -
Page 23: Sensor Status
VELTRON III 4.7 SENSOR STATUS This screen provides real-time operating status for the pressure transducers. Sensor Status Range Press Sensor (inH2O) (inH2O) 0.00003 24-18-132 -0.00044 23-18-178 0.00002 24-18-133 -0.00031 23-18-215 Present Missing ESC - Leave 4.8 BOARD DATA This screen provides real-time operating information for the Board Data transmitter electronics. -
Page 24: Humidity Correction
VELTRON III 4.11 HUMIDITY CORRECTION This function allows the user to set the air to be adjusted for Supply Air, Return Humidity Correction Air or Custom. For Supply air if Temp is >85F, it uses RH Low correction. For Custom Air if Temp is >65F, it uses RH Low for RH correction. Application Return Air *For Dual Channel, Dual System models Humidity Correction is under system set... -
Page 25: Section 5.0 System Set - Up Menu
VELTRON III SECTION 5.0 SYSTEM SET - UP MENU Single This screen provides the system set up menu for Single Channel, Single System Confi guration. System Setup Menu Flow Configuration Display Configuration Analog Output Configuration Filters and Lockdown Field Characterization Custom ID Configuration ENT - Accept ESC - Leave UP/DN - Change Split... -
Page 26: Flow Configuration
VELTRON III 5.1 FLOW CONFIGURATION Single This menu is used to select the fl ow inlet type and adjust the fl ow settings. Flow Configuration Probe Type Probe Type VOLU-p/FI The probe type is selected by the user based on the sensor used. The options are: Maximum Flow 3647 Full Scale Flow... -
Page 27: Display Configuration
VELTRON III 5.2 DISPLAY CONFIGURATION Single Channel, Single System: Display Configuration Line 1 is Flow Line 1 Flow Line 2 can display Velocity/Temperature/DP/Atm Pressure/Velocity Std./None Line 2 Temperature Line 3 can display Velocity/Temperature/DP/Atm Pressure/Velocity Std./None Line 4 can display Velocity/Temperature/DP/Atm Pressure/Velocity Std/None Line 3 Line 4 Velocity... -
Page 28: Analog Output Configuration
VELTRON III 5.3 ANALOG OUTPUT CONFIGURATION Single This menu is used to confi gure the analog outputs. In split and dual modes the outputs are assigned to the specifi c channels. Analog Output Configuration Output Type Type 4-20 mA Use this to confi gure the output type. The options are 4-20mA, 0-10VDC, Output 1 Flow 0-5VDC or off... -
Page 29: Filters And Lockdown
VELTRON III 5.4 FILTERS AND LOCKDOWN This menu function sets fi ltering for the analog outputs and the display. It is also used to set the lockdown (low fl ow cut-off ). Filters and Lockdown Process Filter Process Filter The process fi lter is used to dampen the analog outputs. The settings are from 1-10, where 1 is the softest fi... - Page 30 VELTRON III 5.5 FIELD CHARACTERIZATION (CONTINUED) This menu allows the user to fi eld characterize (FC) system fl ow and adjust the Field Charaterization factory calibration parameters in the VELTRON III. When FC is enabled, the icon shown below appears in the status bar of the main display. When operating in FC Off Split or Dual mode, there may be two icons shown indicating that both inlets have been characterized.
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Page 31: Custom Id Configuration
VELTRON III 5.5 FIELD CHARACTERIZATION (CONTINUED) 1 Point - Enter a fl ow rate or velocity that is at or near the top of the operating range. Characterization Calculator Number of Points Flow Data Points Reference Vel III Points Point 1 ENT - Accept ESC - Leave UP/DN - Change 2 Points - For point 1, enter a fl... -
Page 32: Humidity Correction Option
VELTRON III 5.7 HUMIDITY CORRECTION OPTION Once selected the instrument will present the RH Correction screen. Where Humidity Correction Application can be one of four: Application Supply Air • Return Air Zone • Supply Air RH Low • Custom • Default RH High ENT - Accept ESC - Leave UP/DN - Change... -
Page 33: Section 6.0 Communications
VELTRON III SECTION 6.0 COMMUNICATIONS The VELTRON III is provided with BACnet MS/TP and MODBUS RTU as serial communications protocol options. BACnet is the default setting. The fi eld confi gurable serial communications interface is described on the following pages. Refer to section 2.1.4 Transmitter Wiring Connections for detailed information on wiring connections. -
Page 34: Standard Bacnet Objects Supported
VELTRON III 6.1.3 Standard BACnet Objects Supported Object Identifi er Writeable 0 – 4,194,303 Object Name VELTRON III Writeable Alpha-numeric; 20 character limits. See “Custom ID” setting in the Service Menu. Object Type Device Read-only System Status Operational Read-only Vendor Name Air Monitor Corporation Read-only Vendor ID... -
Page 35: Analog Input Object
VELTRON III 6.1.4 Analog Input Object Object Identifi er Analog Input-0 to Analog Input-X1 Read-only Object Name Various Read-only Object Type Analog-Input Read-only Present Value REAL Read-only Status Flags F, F, F, F Read-only Event State Normal Read-only Out of Service FALSE Read-only Description... -
Page 36: Modbus Rtu
VELTRON III 6.1.5 BACnet (cont.) Dual Channel, Dual System Object Name Description Units Analog Input 1 Total Flow Sys1 Cubic feet per minute Analog Input 2 Flow Total Plus Cubic feet per minute Analog Input 3 D.P. Sys 1 Inches of Water Analog Input 4 Temperature Sys1 Degrees Fahrenheit... -
Page 37: Modbus Registers
VELTRON III 6.2.1 MODBUS Registers Operating Mode Register Description Register Type Address Data Type Single Total Flow Input register 30000 Floating point Single Diff erential Pressure Input register 30002 Floating point Single Temperature Input register 30004 Floating point Single Velocity Input register 30006 Floating point... - Page 38 VELTRON III 6.2.1 MODBUS Registers (Continued) Description Register Type Address Data Type Description System Velocity Units Read Input 30201 uint16_t 1 = FPM, 2 = FPS, 3 = MPM, 4 =MPS System Flow Units Read Input 30202 uint16_t 1 = CFM, 2 = CFH, 3 = L/S, 4 = L/M, 5 = M3H System Version Read Input...
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Page 39: Section 7.0 Maintenance
VELTRON III SECTION 7.0 MAINTENANCE The VELTRON III does not contain any parts that require scheduled maintenance. The following information is provided, as general guidelines, if you wish to establish an inspection/maintenance program. Start with annual inspections and adjust the frequency as required to meet your needs. Cleanliness •... - Page 40 11451 Belcher Road South • Largo, FL 33773 • USA • Tel +1 (727) 447-6140 www.airmonitor.com/hvac/ • hvacsales@airmonitor.com...
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