HWA4214SD USER’S MANUAL HOT WIRE ANEMOMETER-THERMOMETER WITH DATALOGGING SD CARD Please read this manual carefully and thoroughly before using this product.
TABLE OF CONTENTS Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Key Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Operating Instructions . . . . . . . . . . . . . . . . . . . . . 4 – 10 What’s in the Case . . . . . . . . . . . . . . . . . . . . 4 – 5 Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 – 7 Normal Operation . . . . . . . . . . . . . . . . . . . . . 8 – 9 Holding and Storing Measurements. . . . . . . . . .
INTRODUCTION Thank you for purchasing General Tools & Instruments’ HWA4214SD Hot Wire AnemometerThermometer with Datalogging SD Card. Please read this user’s manual carefully and thoroughly before using the instrument.
KEY FEATURES • Includes telescoping air speed-temperature probe • Displays air (wind) speed in meters/second, feet per minute, kilometers/hr, knots (nautical miles per hour), or miles per hour • Measures air speeds down to 0.2 m/s with 0.01 m/s resolution (down to 40 ft/min with 1 ft/min resolution) • Displays temperature in ºF or ºC • Big (2.5 in.
TOP FRONT BOTTOM RIGHT SIDE BACK TELESCOPING PROBE Fig. 1. The HWA4214SD’s controls and indicators and other physical features 1-1 Liquid-crystal display 1-2 POWER/ESC button 1-3 FUNC.
SETUP 1. Choose the power source. Before using the HWA4214SD, make sure it is powered by fresh batteries or an optional 9VDC AC adapter plugged into the bottom jack on its right side (callout 1-12). To remove the battery compartment cover (callout 1-13), remove the two screws holding it in place (callout 1-14). Then install six AA batteries in the correct orientation, using the polarity marks on the inside of the compartment as a guide. Replace the cover by replacing the two screws. 2. Install an SD card.
5. Enable or disable auto power off. Once the format of decimal point divisions has been set and stored, the display will show the word “yES’ over the term “PoFF”. Press the SET ▼ button until the desired automatic power off management scheme (“yES” for enable; “no” for disable) is displayed. Press the REC/ENTER button to store the selection. If enabled, the power off function shuts off the HWA4214SD after a period of inactivity of ten minutes. 6. Enable or disable the beeper.
NORMAL OPERATION 1. To prepare to make measurements, power on the HWA4214SD and make sure an SD card is firmly seated in the socket on the bottom of the instrument. The meter can make and display two kinds of measurements: • Air speed and temperature (simultaneously) • Surface temperature, as measured by an optional Type K or Type J thermocouple 2. To select the measurement mode, use the FUNC./HOLD/NEXT button. Pressing the button repeatedly toggles between the two modes. When the FUNC.
Whenever the HWA4214SD is in either measurement mode, you also can check the current date and time by briefly pressing the SET ▼ button (which has the words “Time check” stenciled below it). Doing so causes both values to appear briefly at the lower left of the display. HOLDING AND STORING MEASUREMENTS 1. To hold a measured value, press the FUNC./HOLD/NEXT button during the measurement. Doing so will cause the word “HOLD” to appear at the top of the display. Pressing the FUNC.
Now press the LOGGER ▲ button. This will cause the beeper to sound and the term “LOGGER” to briefly appear at the upper right of the display. As in automatic datalogging mode, in this mode the instrument is storing measurements and their time stamps on the SD card. In manual datalogging mode, however, measurements are being stored continuously (with a sampling time of zero), and their locations on the card can be changed. 5.
SPECIFICATIONS Embedded microcontroller Custom one-chip LSI device Display type Liquid-crystal with green backlight Display size 2.05 x 1.5 in. (52 x 38mm) Parameters measured Air speed, temperature Measurement range For temperature, 32º to 122ºF (0º to 50ºC); for air speed: 0.2 to 25 m/sec, 0.7 to 172 km/hr, 0.5 to 44.7 mph, 0.4 to 38.8 knots, 40 to 3940 ft/min Measurement accuracy For air speed: ± (5% + 0.1 m/sec), ± (5% + 0.3 km/hr), ± (5% + 0.2 mph), ± (5% + 0.
MAINTENANCE & TROUBLESHOOTING TIPS Keep the telescoping probe clean and move the sensor cover at its tip to the up position when not using the probe. Store the probe in the carrying case when you are not using the anemometer. When the icon appears in the left corner of the display, it’s time to replace the six “AA” batteries that power the instrument (although measurements will remain valid for several hours after the low-battery indicator first appears).
RETURN FOR REPAIR POLICY Every effort has been made to provide you with a reliable product of superior quality.
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GENERAL TOOLS & INSTRUMENTS 80 White Street New York, NY 10013-3567 PHONE (212) 431-6100 FAX (212) 431-6499 TOLL FREE (800) 697-8665 e-mail: sales@generaltools.com www.generaltools.com HWA4214SD User’s Manual Specifications subject to change without notice ©2010 GENERAL TOOLS & INSTRUMENTS NOTICE - WE ARE NOT RESPONSIBLE FOR TYPOGRAPHICAL ERRORS.