Table of Contents
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Table of Contents
Summary of Contents for Tek-Air VorTek VT-5000 series
- Page 1 Vortek AIRFLOW TRANSMITTER SERIES VT-5000 & VT-7000 INSTALLATION, OPERATION & MAINTENANCE MANUAL RELEASE 2.1 APRIL 2005 PROTECTED BY US PATENT 4,770,035 TEK-AIR SYSTEMS 41 EAGLE ROAD DANBURY, CT 06810 TEL. (203) 791-1400 FAX (203) 798-6534 WWW.TEK-AIR.COM...
- Page 2 The exclusive remedy of the user or purchaser, and the limit of the liability of Tek-Air or any other seller for any and all losses, injuries, or damage resulting from the use of this product shall be the return of the product and the refund of the purchase price, or, at the option of Tek-Air or any other seller, the repair or replacement of the product.
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Page 3: Table Of Contents
TABLE OF CONTENTS 1.0 OPERATION 1.1 General Description..............4 1.2 Specifications ................5 1.3 Operation of VorTek Sensors ..........6 1.4 Transmitter Operation.............. 7 1.5 Options ..................8 2.0 INSTALLATION 2.1 Probe Bar Mounting and Location ........... 8 2.1.1 Duct-Mounted Probes ................8 2.1.2 Fan Inlet- Mounted Probes .............. -
Page 4: Operation
Operation OPERATION General Description The Tek-Air VorTek airflow measurement system consists of one or more duct insertion probes and an electronic transmitter. The VorTek measurement system is capable of measuring airflow volume in ducts of all sizes and shapes, as well as fan inlet bells. -
Page 5: Specifications
Chapter 1 Operation Specifications Sensors and Probes Sensor Type: Vortex shedding Velocity Range: 350 to 9500 FPM Probe bar Length: 8" to 72" Probe bar Configuration: Rectangular, Round, Oval, Fan Inlet Materials of Construction; Standard: Mounting Plate: Galvanized steel Probe bar: Extruded aluminum Sensor Assembly: Aluminum and ABS Miscellaneous: EPDM finishing strip Materials of Construction;... -
Page 6: Operation Of Vortek Sensors
The evidence of the shedding of vortices is in the waving of the flag itself. Tek-Air’s unique VorTek flow sensors use a trapezoidal shaped obstruction placed in a small tube section to gener- ate stable vortices over a wide range of low velocities. -
Page 7: Transmitter Operation
Chapter 1 Operation Transmitter Operation The enclosure located on the external end of each duct probe bar is the probe electronics housing. It contains the electronics which sense the vortices gener- ated by the VorTek probes. At the bottom of the enclosure is the electronic con- nector required to connect each duct probe to the transmitter. -
Page 8: Options
The following details are provided on the mounting and installation of the VorTek transmitter and flow probes. Please read this data carefully and install the equip- ment in strict accordance with the instructions provided. Should you have any questions, contact Tek-Air directly. Probe Mounting and Location 2.1.1 Duct- Mounted Probes... -
Page 9: 2.1.2 Fan Inlet- Mounted Probes
Should this occur, the probe bars can be removed for cleaning (see Appendix C). Inspection- Carefully unpack and inspect the probes. If probes have been bent or broken in shipment, advise Tek-Air immediately. Installation- Probes are mounted across the duct and attach to the duct on both sides. -
Page 10: Transmitter Mounting And Location
Chapter 2 Installation sures which are mounted in the center of each bar. In both cases the bar elec- tronics connect to the Transmitter via prefab cables, which are factory-connected to the bar electronics enclosures. Direction of Flow- The probes must be positioned so that they face into the airflow: the Safety Cables on the ends of the bars leading out of the fan inlet bell, and the mounting brackets facing back into the fan inlet bell. -
Page 11: Probe Bar And Transmitter Connection
Chapter 3 Startup Adjustments ing either on the duct or on a wall, column, or other support close to the point of measurement. The transmitter housing is a general purpose enclosure and is therefore not designed for mounting outdoors or in areas requiring explosion- proof classification. -
Page 12: Startup Adjustments
Chapter 3 Startup Adjustments 24 VAC 4-20ma POWER OUTPUT INPUT 24VAC POWER CONTROLLER COMMON Tape Back Drain Line at Transmitter & SHIELD Tie to Controller Common Transmitter Power and Signal Wiring Figure 2 STARTUP ADJUSTMENTS General Description The VorTek airflow transmitter has several modes of operation which are deter- mined by setting the four position DIP (Dual Inline Package) switch located on the upper right corner of the mother board. -
Page 13: Normal Operation
Chapter 4 Calibration and Maintenance Transmitter output checks can be made by connecting a voltmeter set for DC milliamps, in series as follows; SIGNAL POWER 2.34 24VAC SIGNAL WIRES Figure 4 Normal Operation In order for the transmitter to function properly as a flow measurement device the DIP switch must be set as follows;... -
Page 14: Quick Calibration Check
Chapter 4 Calibration and Maintenance Quick Calibration Check Transmitter calibration can be checked quickly by setting DIP switches 2, 3, and 4 as follows, and then removing the probe connectors from the bottom of the transmitter; DIP 1 On or Off DIP 2 Off DIP 3 Off DIP 4 On... -
Page 15: Bench Calibration
Chapter 4 Calibration and Maintenance For best results, a traverse should be done with the airflow at a fixed CFM. This can be done by: Fixing the output to the damper/valve which throttles the air in that duct, or by removing the output to the valve/damper, and keeping all doors closed in the area that is affected by this airflow. -
Page 16: Offset Adjustment
Chapter 4 Calibration and Maintenance Offset Adjustment The tag on the transmitter enclosure may have two separate values for frequency; Full scale Hz and Span Hz. If this is the case, the transmitter was factory calibrated with an offset. To set the offset, follow the set up procedure in 4.2 first. Next turn the offset potentiometer (see figure 5) counter clockwise all the way. -
Page 17: Troubleshooting
Correct possible signal Probes in Reinstall in transmission line problems Backwards? Proper Direction a. Open Circuit b. Loop resistance above 650 Ohms c. Short to ground in “+” wire Contact Tek-Air Systems for Assistance VORTEK Doc.# VT5 OM 050499, Rel. 2.1... - Page 18 Relocate probes; refer to Proper Location? Appendix 1, Page A-1 Unplug Cables, 4mA? Unit may be out of calibration. See section 4.1, Field Calibration Contact Check Zero Tek-Air Systems (Section 3.4) for Assistance 4mA? Probes Reinstall in mounted in duct Proper Direction Backwards?
- Page 19 VORTEK Doc.# VT5 OM 050499, Rel. 2.1...
- Page 20 Appendices Appendix A VORTEK Doc.# VT5 OM 050499, Rel. 2.1...
- Page 21 Appendices Appendix A VORTEK Doc.# VT5 OM 050499, Rel. 2.1...
- Page 22 Appendices Appendix A VORTEK Doc.# VT5 OM 050499, Rel. 2.1...
- Page 23 Appendices Appendix A VORTEK Doc.# VT5 OM 050499, Rel. 2.1...
- Page 24 Appendices Appendix A VORTEK Doc.# VT5 OM 050499, Rel. 2.1...
- Page 25 Appendices Appendix A VORTEK Doc.# VT5 OM 050499, Rel. 2.1...
- Page 26 Appendices Appendix A VORTEK Doc.# VT5 OM 050499, Rel. 2.1...
- Page 27 SWIVEL MOUNTING SWIVEL MOUNTING CENTRIFUGAL FAN CENTRIFUGAL FAN BASE (TYP .) BASE (TYP .) FAN SCROLL FAN SCROLL SUPPORT BAR SUPPORT BAR VORTEK SENSORS VORTEK SENSORS VORTEK/FI VORTEK/FI AIRFLOW AIRFLOW NON-METALLIC CONDUIT NON-METALLIC CONDUIT FAN SHAFT FAN SHAFT (PROVIDED) (PROVIDED) SEE DETAIL “B”...
- Page 28 Appendices Appendix A VORTEK Doc.# VT5 OM 050499, Rel. 2.1...
- Page 29 Appendices Appendix A VORTEK A-10 Doc.# VT5 OM 050499, Rel. 2.1...
- Page 30 Appendix B Proper procedure for the cleaning of VorTek Airflow Measuring Probes The Tek-Air Systems, Inc. VorTek Airflow Measuring Probe is a very versatile flow measuring station that is used in many types of applications. Some of these ap- plications include use in harsh environments such as pharmaceutical pill coating areas, dirty exhaust systems, etc.
- Page 32 41 EAGLE ROAD DANBURY, CT 06810 TEL. (203) 791-1400 FAX (203) 798-6534 WWW.TEK-AIR.COM...
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