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Summary of Contents for Omega HHF142
- Page 1 User’s Gui d e Shop online at omega.com e-mail: info@omega.com For latest product manuals: www.omegamanual.info HHF142 HANDHELD ROTATING VANE ANEMOMETER...
- Page 2 Fax: (203) 359-7700 e-mail: info@omega.com For Other Locations Visit omega.com/worldwide The information contained in this document is believed to be correct, but OMEGA accepts no liability for any errors it contains, and reserves the right to alter specifications without notice.
- Page 3 INTRODUCTION Omega's Model HHF142 digital anemometer is a versatile instrument for measuring air velocity in various applications such as HY AC, aerospace development, industrial process airflow, and fluids research. Air Volume flow is automatically calculated in units of either cubic feet per...
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Page 4: Section 1 - Specifications
SECTION 1 - SPECIFICATIONS Ranges: 2.75 Inch Air Probe: 40 to 7800 ft/min (feet per minute) 0.2 to 40.00 m/sec (meters per second) 1 Inch Air Probe: 60 to 6800 ft/min 0.3 to 35.00 m/sec Calculated Air Volume Flow: 0.0 to 9999 ft /min (cubic feet per minute) 0.0 to 9999 m3thr... - Page 5 Additional Probes, 2.75 Inch or 1 Inch Diameter • Extra extension and/or flexible rods • Custom cable lengths Included: • HHF142 Instrument • Vane-type probe head, choice of ,2.75 Inch or 1 Inch Diameter • (3) Rigid extension rods with handle grip • (1) Flexible extension rod •...
- Page 6 MOUNTING BOSS WITH 2.75 INCH PROBE 3/8-16 UNC TAPPED HOLE r/>2. 7 5 INCH .750 INCH DEEP - lOMM ---'-- - -� ELECTRICAL CONNECTOR------. .87 5 IN CH - -1- � - ---1 22MM 1.7± . 010 INCH 1--------- 4 . 9 INCH _ _ _ _ _ __ ___, 43MM...
- Page 7 Section 2 - Switch Functions Pressing the ON/OFF key switches the instrument ON. Hold down the key for 2 seconds to switch the unit OFF. The unit will automatically power off after 30 minutes without any key presses. To disable auto power-off, hold down the power button during tum-on. The unit AOF F, will flash which means that the auto power-off has been disabled.
- Page 8 Press the FPM/MPS key to switch the measurement units from FPM (feet per minute, 1 FPM resolution) to MPS (meters per second, 0.01 MPS resolution). Either FPM or MPS will be displayed on the LCD. Press the SAMPLE RATE key to change the measurement averaging rate ("sample rate") of the unit: 2SEC An average value of airspeed measurements during the...
- Page 9 Press the HOLD/RESET key to freeze the current reading on the tJ,19 1 � , . · display. HOLD is displayed on the LCD and the reading is held. Press the HOLD/RESET key a second time to clear this mode and return the unit to normal operation.
- Page 10 � Press the HOLD/RESET key at any time while adjusting duct sizes to � exit the duct size adjustment. Any changes you have made to duct sizes are not saved. Duct Size Entry example: The following example shows how to enter the dimensions of a 12 inch x 12 inch rectangular duct and save this duct at Duct# 4 in memory.
- Page 11 This will give a more accurate value f or the volume . fl ow rate out o f the duct .. ) The following page shows a graphical representation of the steps required to enter the duct dimensions into the HHF142. Rev 1.9, 10-Jun-2008 Page 10 of28...
- Page 12 "VOL"" "duct•· /the current duct setup being modified) "UniC � "Cent" "Inch"" "Duct'" � "Circ" "Rect" "Dia" "Heit'" "Len" ·J)o .O' " •IJO.O" ·IJO.O" - • - • •IJO.O" •J)o.O" •IJO.O" "iltJ.O" "lltJ.O" "lltJ.0" • - • - Rev 1.9, 10-Jun-2008 Page 11 of28...
- Page 13 · f l: While in Volume Flow Mode, press the FPM/MPS key to switch . � ·; ', between units of cubic feet per minute (CFM) and cubic meters per hour (CMH). CUBIC will be displayed along with either FPM or MPS on the LCD display to tell you what units you are in.
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Page 14: Section 3 - Operational Notes
SECTION 3 - OPERATIONAL NOTES Caution: Do not attempt to measure flow from a duct that is smaller than the diameter of the probe head that you are using. This will cause a false reading. Follow the minimum duct cross-section guidelines as detailed below: 2. -
Page 15: Appendix A - Lcd Display Symbols
APPENDIX A - LCD DISPLAY SYMBOLS LCD DISPLAY DISPLAY HOLD BATTERY CUBIC SYMBOL CFM (�min) or CMH(�r) FEET PER MINUTE SYMBOL (ft/min) APPENDIX B - BATTERY REPLACEMENT REMOVE BATTERY COVER REMOVE TWO SCREWS REPLACE THREE (3) SIZE AA BATTERES AS SHOWN Rev 1.9, 1 0-Jun-2008 Page 14 of28... -
Page 16: Appendix C -Analog Voltage Outputs
► With the additional error associated with the analog output voltage, the effective accuracy of the analog output for this air velocity measurement will be ±2% of reading ±1 digit (±11 FPM). Custom Analog Voltage Outputs are also available - contact Omega for details. Rev 1.9, 10-Jun-2008 Page 15 of28... - Page 17 Analog Output circuit block diagram and connector pin assignment • • • ANALOG OUTPUT CONNECTOR PINOUT DIAGRAM Mating Cable Connector: Binder Part No. 99-0413-00-05 Rev 1.9, 1 0-Jun-2008 Page 16 of28...
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Page 18: Appendix D - Usb Data Output (If Equipped)
APPENDIX D - USB DATA OUTPUT (IF EQUIPPED) If the instrument is equipped with the USS Communications option, there will be a four pin male connector on the bottom of the instrument. Also, a will will USS cable be included with the instrument. This cable have a four pin female connector on one end and a USS Type-A connector on the other end. - Page 19 PRIDElAP B· !±l'9, Ba Ccmpu� [±! ..Disk� ffi " Display� f±! 41, DYD,co-ROM aives ffi ·§ Flcppy disk CDll1n!l 1:E § IDE ATA/ATN'J. aJn1role 1:E 4fii, lEEE 1394 lu hast aritrole ffi� K!!}'boards l±J � Mia! and other pooling do-.as Modl!ms I±] ...
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Page 20: Appendix E - Rs232 Communications (Ii� Equipped)
APPENDIX E - RS232 COMMUNICATIONS (II� EQUIPPED) If the instrument is equipped with the RS232 Communications option, there will be a three pin male connector on the bottom of the instrument. will Also, an RS232 cable be included with the instrument. This cable will have a three pin female connector on one end and a 0B9 Female connector on the other end. - Page 21 APPENDIX F VIEWING AND CAPTURING DATA (IF EQUIPPED WITH EITHER USB OR RS232 OUTPUTS) There are many ways to capture the serial port data from the Instrument. The simplest method is to use a terminal emulator program. Using a terminal emulator allows the serial COM port to be opened, with the above port settings, and real-time data to be viewed from the instrument.
- Page 22 On the next window, next to "Connect using," select the COM port you that you are using with your instrument. Click OK. '. ? :}( Connect To Enler details forlhe phone number 1hat you want to dial: Araacode: Phone number. �I Comee! U5ing: ,___o_K...
- Page 23 Click on File Properties. You will see the window shown below. Click ---+ on the S ettings tab and then click on ASCII Setup ... as shown below. Foodioo. 8"1ow. and al bys act as o-i..y. @r..-1ooys Backs;:ace key sends @ C>MJ O o.i O c..t Space _ C>MJ...
- Page 24 Comma-Separated Values (CSV) Measurement Units Same as Units shown on LCD Display Below are examples of the formatted output data for Omega's HHF141- HHF144 Series Instruments (units may be different depending on the units selected on the LCD display): Air,47,FPM <CR>...
- Page 25 Exporting and Graphing Data Exporting serial port instrument data from the Instrument to a spreadsheet application such as Microsoft Excel or OpenOffice Cale allows the data to graphed or recorded. The simplest way to export the instrument data is to use a terminal emulator program, like Windows HyperTerminal, and either capture the serial data/text to a file (menu selection) or to manually highlight, copy, and then paste the instrument data into an editor such as Windows...
- Page 26 CALIBRATION To maintain your instrument in top working order, we recommend that you send it back to Omega for calibration each year, beginning one year after purchase. Our calibration services include ensuring the instrument performs within its accuracy tolerance, making any necessary adjustments, and inspecting all aspects of the instrument's functionality so that you'll have another year of dependable service.
- Page 27 Notes: Rev 1.9, 1 0-Jun-2008 Page 26 of28...
- Page 28 Notes: Rev 1.9, 1 0-Jun-2008 Page 27 of28...
- Page 29 Department will issue an Authorized Return (AR) number immediately upon phone or written request. Upon examination by OMEGA, if the unit is found to be defective, it will be repaired or replaced at no charge. OMEGA’s WARRANTY does not apply to defects resulting from any action of the purchaser, including but not limited to mishandling, improper interfacing, operation outside of design limits, improper repair, or unauthorized modification.
- Page 30 Where Do I Find Everything I Need for Process Measurement and Control? OMEGA…Of Course! Shop online at omega.com TEMPERATURE M U Thermocouple, RTD & Thermistor Probes, Connectors, Panels & Assemblies M U Wire: Thermocouple, RTD & Thermistor M U Calibrators & Ice Point References M U Recorders, Controllers &...