LCD display ON/OFF, HOLD key UNITS, MODE key Battery compartment (on rear) Tripod mounting hole Lanyard (neckstrap) 6 7 8 9 10 Press the ON/OFF/HOLD button to turn the meter ON Press and hold the ON/OFF/HOLD buttons for approx. 3 seconds to turn it OFF The meter’s Auto Power OFF feature turns the meter OFF after 20 minutes of inactivity Change the lower display parameter 45158-EU-EN V3.4 8/13 All rights reserved including the right of reproduction in whole or in part in any form ISO-9001 Certified www.extech.com Copyright © 2013 FLIR Systems, Inc. Data Hold freezes the most recent displayed reading Press and hold the ON/OFF/HOLD button to activate Data Hold As long as the ON/OFF/HOLD button is held the reading will remain on the LCD 5 or 10 reading averages can be displayed in the Average Mode. Press UNITS/MODE 3 times for 5 reading averaging or 4 times for 10 readings To exit this mode, press the UNITS/MODE button until the icons on the left disappear Data Hold 0.5 to 28.0 m/s 100 to 5500 ft/min 1 to 17 BF -18 to 50oC (0 to 122oF) 10 to 95% 0 to 50oC (32 to 122 oF) m/sec (meters per second) ft/min (feet per minute) Beaufort force Temperature Relative Humidity Dew Point To 1m(3’) Lithium battery (CR-2032 or equivalent) / 400 hour battery life Instrument: 133 x 70 x 19mm( 5.25 x 2.75 x 0.75”) Vane: 24mm (1”) diameter /95 g (3 oz) Power supply Dimensions / Weight 1 reading per second for air velocity and temperature (1 reading per 15 seconds for humidity with 2 second updates) Sample time -15 to 50oC (5 to 122oF) / < 80% RH Max recalls the highest reading; Data Hold freezes the display Max and Data Hold Displays Operating conditions Choice of 5 or 10 reading averaging (2 second factory default) Average Mode Water-resistant Sapphire bearing, non-corrosive vane for air velocity; Precision thermistor for temperature measurements Sensors ± 3.6oF (2oC) ± 5% RH ± 1.8oF (± 1oC) ±1 ± (3% + 40 ft/min) ± (3% + 0.2 m/s) ± (3% + 0.6 knots) ± (3% + 1.4 km/hr) Dual LCD with low battery and multifunction indicators 0.1oF/C 1% 0.1oF/C 1 BF 20ft/min Accuracy (% of reading) ± (3% + 0.4 mph) Display General Specifications 0.3 knots 1.0 to 54.3 knots Knots (nautical miles per hour) 0.1 m/s 0.7 km/h km/hr (kilometers per 1.8 to 100.6 km/h hour) Resolution 0.2 MPH Range MPH (Miles per hour) 1.1 to 62.5 MPH Measurement Specifications Temperature sensor 5 Turning the meter ON and OFF With the meter ON, press and hold down the ON/OFF/HOLD button While continuing to hold the ON/OFF/HOLD button, press the UNITS/MODE button repeatedly to step through Temperature (oF/oC), Humidity (RH%), Dew Point (TD), & Temperature with wind-chill factor (WCI). Note that the center display is Air Velocity. Change the Air Velocity unit of measure Turn the meter OFF. Press and hold down both buttons until the display turns on and begins blinking then release both buttons Press the UNITS/MODE button repeatedly to step through the units (see specs for list) After 5 seconds the meter switches back to normal operation mode automatically Select temperature units (oC or oF) Turn the meter OFF first. Press and hold down both buttons until the display turns on and begins blinking then release the buttons Press both buttons momentarily to change temperature units After 5 seconds the meter switches back to normal operation mode automatically Taking Measurements Position the meter so that the airflow enters the meter vane from the rear of the meter (opposite side of front panel logo). A tripod mount is located on the bottom of the meter. Max Hold Max Hold represents the highest measurement taken since the meter was turned on Press the UNITS/MODE button to display the Max reading (MAX icon appears) Press the UNITS/MODE button repeatedly to step through to the normal operating mode Average mode Relative Humidity sensor 4 Impeller set screw (on rear of meter) 2 Operation Vane impeller 1 Meter Description Remove the set screw next to the impeller assembly (on the rear of the meter). Twist the impeller assembly counter-clockwise to the OPEN position and remove it. Install impeller by inserting & twisting the new impeller assembly clockwise Tighten the set screw. 3 2 2 CMM (m /min) = Air Velocity (m/sec) x Area (m ) x 60 3 CFM (ft /min) = Air Velocity (ft/min) x Area (ft ) Measure the area of the duct using the diagrams below for rectangular and circular ducts (If the duct measurements are made in inches, divide the inches by 144 to get the area in square feet). Plug the area value (in square feet) in the cubic equations below. Note that the air velocity must be plugged into the cubic equations also. CFM Measurements Impeller Replacement Other Battery Safety Reminders Never dispose of batteries in a fire. Batteries may explode or leak. Never mix battery types. Always install new batteries of the same type. Disposal: Follow the valid legal stipulations in respect of the disposal of the device at the end of its lifecycle All EU users are legally bound by the Battery Ordinance to return all used batteries to community collection points or wherever batteries / accumulators are sold. Disposal in household trash or refuse is prohibited. Battery Replacement The 45158 has a low battery indicator (battery symbol). Important: Turn the meter off before opening the battery compartment. Using a coin, turn the battery compartment cover CLOCKWISE to remove it. Once opened, observe the position of the battery, placing the new one in the same position. Secure the battery compartment cover and dispose of the lithium battery in accordance with local, state, or national disposal codes. Maintenance Mini Hygro Thermo-Anemometer 3 Congratulations on your purchase of Extech’s Model 45158 Anemometer. The dual display indicates Air Velocity and Humidity, Dew Point, Ambient Temperature, or Temperature with wind-chill factor. With careful use, this meter will provide years of reliable service. Introduction User Manual Model 45158