AAV3 - Air Velocity and Temperature Accessory Head
Contents
1. Use your AAV3 with the DL3 data logger Press the RECORD button a few times on the DL3 data logger to log a few readings and then just press AVG to find your average air velocity Free area length R On Free area width Use it your way DL3 EHDL1 AHDL1 wi Meter One year limited warranty This head is warranted to the original purchaser against defects in material and workmanship for a period of one year from the date of purchase During the warranty period Fieldpiece will replace or repair the defective unit subject to verification of the defect Any damage to the sensor from dirt mechanical abuse or overexposure to damaging chemicals including overexposure to carbon monoxide are not covered under this warranty Also not covered are defects resulting from abuse neglect accident unauthorized repair alteration or unreasonable use Any implied warranties arising out of the sale of a Fieldpiece Instrument including but not limited to implied warrenties of merchantacility and fitness for a particular purpose are limited to the above Fieldpiece shall not be liable for loss of use of the instrument or other incidental or consequential damages expenses or economic loss or for any claim or claims for such damage expense or eco nomic loss Local laws vary Above limitations or exclusions may not apply to you This warranty gives you spe cific legal rights and you may also have other rights which vary2. by location Specifications Range wind velocity 60 5900 Ft min 0 7 67 0 mph 0 3 30 0 M s 1 108 KM hr Accuracy wind velocity 3 1digit 73 F 45 F 23 C 2 C lt 95 relative humidity Range temperature 20 C to 60 C 4 F to 140 F Accuracy temperature 1 F at 32 F to 113 F 2 F at 4 F to 32 F 113 F to 140 F 0 5 C at 0 C to 45 C 1 C at 20 C to 0 C 45 C to 60 C Resolution 0 1 F C Operating temperature 32 to 120 F 0 49 C Operating relative humidity lt 95 RH Storage temperature 4 to 140 F 20 to 60 C 0 to 80 R H with battery removed from meter Sensor type Thermistor temperature sensor Battery life 200 hours typical No measurable current draw when in off position Low battery indication Red LED Battery 9V Auto off Approx 10 minutes Service Return any defective AAV3 to Fieldpiece for war ranty service along with proof of purchase Contact Fieldpiece for out of warranty repair charges Fieldplece paras LLY Y Fieldpiece Instruments Inc California U S A www fieldpiece com v06
3. velocity is 600 ft min then the CFM is 600 ft min x 1 2 ft 300 CFM Description The model AAV3 accessory head is designed to measure air velocity and air temperature It can be used to estimate CFM cubic feet minute You can measure air velocity in feet minute miles hour meters second or kilometers hour The AAV3 also measures temperature in C or F How to use 1 Connect to COM and Volts jack Slide AAV3 air velocity and temperature accessory head onto Fieldpiece stick meter data logger electronic handle or connect to most other meters using Fieldpiece ADLS2 deluxe test leads 2 Set meter to 200mVDC or 2000mVDC range 3 Power on the AAV3 and select English or met ric along with desired unit of measure 4 Select display mode Average shows a steady average of the last 16 seconds of readings Real time shows every reading and will change immediately if there is a change in air velocity Note temperature readings are always in real time regardless of the setting 5 If the green LCD x 100 LED lights up on the AAV3 you must multiply the LCD reading by 100 to get the true value For L s Multiply the free area by the air velocity to get L s For example a register that has an open area that is 0 3 meters 30cm by 0 15 meters 15cm has a free area of 0 3m x 0 15m 0 045 m If the average air velocity is 3 m s then the L s is 3 m s x 0 045 m x 1000 L m 135 L s Make it easy with the data logger
4. Fieldpiece_ Air Velocity and Air Temperature Accessory Head gt Model AAV3 Air Velocity amp Temperatu Head oe Fieldplece Ny AAV3 Fieldpiece OPERATOR S MANUAL Volumetric Flow There is no substitute to using a hood to meas ure volumetric flow CFM or L s The AAV3 can however be used to estimate volumetric flow Volumetric flow equals air velocity in feet minute or meters second multiplied by the free area in square feet or square meters The AAV3 measures air velocity Then all you need is the size of the opening or free area to find volumetric flow Air velocity Because the air velocity is different at different points of the register it may be best to estimate the average air velocity by averaging the readings from several spots A common method is to take readings from nine different spots and aver age them The DL3 data logger can make finding the average very easy Just take several data points by pressing a button on the data logger then read the average from the LCD Free area Free area is the area of the register that air can move through Estimate free area by measuring the open area of the register in feet or meters including the fins excluding the border For CFM Multiply the free area by the air veloc ity to get CFM For example a register that has an open area that is 12 inches one foot by 6 inches one half foot has a free area of 1ft x 1 2ft 1 2 ft If the average air
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