Omega HHF144, User Manual

Page 1: ...e mail info omega com For latest product manuals www omegamanual info HHF144 Handheld Rotating Vane Hygro Thermo Anemometer TM Shop online at omega com User sGuide...

Page 2: ...pecifications without notice omega com info omega com Servicing North America U S A Omega Engineering Inc Headquarters Toll Free 1 800 826 6342 USA Canada only Customer Service 1 800 622 2378 USA Cana...

Page 3: ...The rugged yet precise air probe can be used in airstreams that have a wide range of humidity temperature and contaminants without compromising air velocity measurement accuracy The combination humidi...

Page 4: ...3 C 0 2 of reading in C Temperature accuracy examples 0 3 C at 20 C 0 5 F at 68 F Resolution Air Velocity Relative Humidity Temperature Operating Temperature Instrument Air Probes Temp RH Probe Power...

Page 5: ...ngths Included 1 HHF144 Instrument 1 Vane type probe head choice of 2 75 Inch or 1 Inch Diameter 1 Combination RH temperature probe 3 Rigid extension rods with handle grip 1 Flexible extension rod 1 P...

Page 6: ...ECTRICAL CONNECTOR 875 INCH t i 22MM 1 7 010INCH I __________ 43 MM f 124MM lINCHPROBE 1 5 Sinches _ _ _ _ ______ 140mm TEMP RHPROBE 925 inch 23 5mm CABLE ATTACHED 5 FEET LONG 1 5 meters TERMINATED WI...

Page 7: ...flash AOFF which means that the auto power off has been disabled The auto power off is re enabled each time the instrument is turned on t Press the BACKLIGHT key to tum the LCD back light on for 30 s...

Page 8: ...units from FPM feet per minute 1 FPM resolution to MPS meters per second 0 01 MPS resolution press the FPM MPS key again Either FPM or MPS will be displayed along with the reading Press the SAMPLE RA...

Page 9: ...alternating with L 16 signifies that 82 is the lowest airspeed reading since the MAX MIN key was pressed and the sample rate is set to 16 seconds To exit MAX MIN mode press the SAMPLE RATE key l Press...

Page 10: ...set to either temperature or relative humidity The humidity sensor will not read correctly if it is exposed to condensation If the Temp RH probe is stored in a cold environment and is then exposed to...

Page 11: ...It min METERS PER SECOND m 1 DEGREES FAHRENHEIT DEGREES CELCIUS LCD DISPLAY LOW RELATIVE DISPLAY BATTERY HUMIDITY HOLD APPENDIX B BATTERY REPLACEMENT REMOVE BATTERY COVER 0 REPLACE THREE 3 SIZE AA BAT...

Page 12: ...s squared times 1t 3 14 Rx Rx 3 14 A cross sectional area To convert an area calculated in square inches to an area calculated in square feet which is required for the Volume Flow equation above divid...

Page 13: ...from Pin Function Ground 2 AirVelocit 3 Relative Humidit 0 to 5Volts Oto 100 RH 4 Tern erature 0 to 5Volts 20 C to 80 C Tern erature 0 C 20xV 20 To convert from Volts to Air Velocity in Feet per Minu...

Page 14: ...he additional error associated with the analog output voltage the effective accuracy ofthe analog output for this air velocity measurement will be 2 of reading 1 digit 11 FPM Custom Analog Voltage Out...

Page 15: ...or Windows Linux and MAC from FTDI Ltd on their website http www ftdichip com DriversNCP htm We recommend downloading the setup executable which automatically runs and configures the drivers for you S...

Page 16: ...iii jMire Ind other rx in1ingdevices _ Ll lcdems ft Momin 1 1 NetMrtildaplErs l IJPO IC Aadaple s B Ports CCf4 lPT j _ 1U1icali0Port COM1 _ ECP PortOJ Tl oo 1 19 Scud oideo andoame conlrolers You are...

Page 17: ...ct the RS232 cable included to the female connector on the bottom of your instrument Connect the other end to an RS232 port on your computer STEP 3 Turn the Instrument ON STEP 4 Verify that the Instru...

Page 18: ...d with the above port settings and real time data to be viewed from the instrument One such terminal emulator program is Windows HyperTerminal To launch Windows HyperTerminal go to START All Programs...

Page 19: ...i ad Siat S ii Alea coda __OK_ 1 I Cancel In the next window select the port settings as shown below and click OK The Serial Port settings are also listed at the end of this section COM3 Proper t e s...

Page 20: ...lw es 500 3 0 Pfaysoundwhen connecting or disconnecting OK J j Cancel Make sure that Append line feeds to incoming line ends is CHECKED as shown below Click OK ASCII Setup XI ASCII Sending 0 Sendline...

Page 21: ...play Below are examples of the formatted output data for Omega s HHF141 HHF144 Series Instruments units maybe different depending on the units selected on the LCD display Model HHF141 Air 47 FPM CR Mo...

Page 22: ...and then paste the instrument data into an editor such as Windows Notepad Once you have the instrument data in a file save the file as a CSV type e g lnstrumentData csv Open the file in a spreadsheet...

Page 23: ...so that you ll have another year of dependable service Calibration also includes a complimentary firmware upgrade so that you know you 11 have the latest advances in accuracy and reliability in your i...

Page 24: ...Notes Rev 1 8 10 Jun 2008 Page 23 of24...

Page 25: ...A 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 m...

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