User Manual - Reliability Direct, Inc.
Contents
1. 5V AAA batteries Approx 30 mADC 0 78 Ib 355 g including batteries amp probe Main instrument 7 1 x 2 8 x 1 3 180 x 72 x 32 mm Sensor 0 5 12mm diameter Telescope 7 212cm maximum length with cable 0 7 to 72 0 km h 0 1 km h 0 5 to 45 0 MPH 0 1 MPH 1 0 to 31 0 knots 0 1 knots 32 to 122 F 0 to 50 C 0 1 F and C 3 3d of reading or 1 1d Full Scale whichever is greater 1 5 F 0 8 C Note m s meters per second km h kilometers per hour ft min feet per minute Knots nautical miles per hour MPH miles per hour 2 Model 407123 Version 5 0 3 05 Meter Description fs LCD display Indicates air velocity and temperature readings units of measure low battery icon and other user alerts Push buttons e POWER Turn meter ON and OFF e HOLD Freezes the displayed reading e C F Select the temperature units e RECORD Press to track the highest MAX and lowest MIN reading e RECALL Displays MAX MIN readings e UNIT Air velocity units of measure e ZERO Press to zero the display sensor cover must be closed Protective holster Rubber jacket that surrounds the meter must be removed to access battery compartment Battery compartment Located on the lower back of the meter PC Interface jack Accepts a 3 5mm plug from a PC interface cable cable and data acquisition software available using part number 407001 Sensor input jack2. Insert the sensor plug Sensor opening Air must flow through this opening for proper measurement Telescoping sensor handle Extends to 39 1 POWER HOLD PCF OO RECORD RECALL UNIT Sensor protective cover Slide DOWN to open when in use and slide UP to protect sensor when not in use close the cover when zeroing the meter Moda 407123 Version 5 0 3 05 Operation Initialization and Zero The meter should always be zeroed at temperature before use Do not rely on a zero display The meter does not display negative numbers 1 Connect the sensor to the input jack on top of the meter 2 Turn on the meter using the Power button The meter will perform a self test during which the display will count down from 9999 to 0000 3 Select the desired temperature units using the C F select button The LCD will reflect the selection 4 Select the desired air velocity units using the UNIT button The LCD will reflect the selection 5 Place the sensor cover in the UP ZERO position 6 Place the sensor in the area to be measured and allow a short time for it to reach temperature 7 Press the ENTER RESET button to zero the meter Air Velocity Sensor cover in White dot Sensor 7 UP ZERO K position D DO NOT TOUCH Temperature Sensor Sensor cover in DOWN MEASURE position h h Measurement Position Zero Position 4 Moda 407123 Version 5 0 3 05 Taking
3. Measurements 1 2 3 4 Open the antenna to the desired length E Air Direction Slide the air velocity sensor cover down E 9 irection Place the sensor in the air current to be measured Have the air flow meet the sensor head in the direction of the white dot on the sensor head View the air velocity and temperature readings on the LCD Display The large main LCD display shows the Air Velocity reading The lower LCD sub display shows the temperature reading MIN and MAX Function 1 To begin capturing the Minimum MIN and Maximum MAX readings press the RECORD button The REC icon will appear on the LCD 2 Press the RECALL button to view the Maximum reading encountered since the RECORD button was pressed The MAX display icon will appear along with the maximum reading 3 Press RECALL again to view the minimum reading MIN 4 Press the RECORD button to exit this mode and return to normal operation Data Hold To freeze the LCD display press the HOLD button The DH display icon will appear on the LCD Press the HOLD button again to return to normal operation the DH hold icon will switch off 5 Moda 407123 Version 5 0 3 05 Battery Replacement When the low battery indicator LBT appears on the LCD or if the LCD does not switch on when the POWER button is pressed replace the batteries 1 Remove the protective rubber holster that encapsulates the meter 2 Open the rear battery compa
4. User s Guide EXTECH INSTRUMENTS Hot Wire Thermo Anemometer Model 407123 RECALL ZERO Introduction Congratulations on your purchase of the Extech Hot Wire Anemometer This meter measures air flow and temperature by placing the sensor into an airway such as a duct or a vent The sensor is situated at the end of the telescoping wand for convenience and has a protective cover that slides up and down The meter includes an RS 232 PC Interface jack for use with the Model 407001 Data Acquisition software and interface cable kit Careful use of this meter will provide years of reliable service Specifications General Specifications Circuit configuration Display Measurements Data hold Sensor Structure Min Max Recording PC Interface Operating Temperature Operating Humidity Power Supply Power Consumption Dimensions Range Specifications Custom one chip LSI microprocessor circuit 3 1 2 digit 2000 count dual LCD display m s meters per second km h kilometers per hour ft min feet per minute knots nautical miles per hour MPH miles per hour Temperature C F Freezes reading on display Air velocity sensor Glass bead thermistor Temperature sensor Precision thermistor Record and Recall Maximum MAX and Minimum readings RS 232 PC serial interface jack for use with Model 407001 software and interface cable kit 32 to 122 F 0 to 50 C Max 80 RH Six 1
5. nty applies on sensors and cables If it should become necessary to return the instrument for service during or beyond the warranty period contact the Customer Service Department at 781 890 7440 ext 210 for authorization or visit our website at www extech com click on Contact Extech and go to Service Department to request an RA number A Return Authorization RA number must be issued before any product is returned to Extech The sender is responsible for shipping charges freight insurance and proper packaging to prevent damage in transit This warranty does not apply to defects resulting from action of the user such as misuse improper wiring operation outside of specification improper maintenance or repair or unauthorized modification Extech specifically disclaims any implied warranties or merchantability or fitness for a specific purpose and will not be liable for any direct indirect incidental or consequential damages Extech s total liability is limited to repair or replacement of the product The warranty set forth above is inclusive and no other warranty whether written or oral is expressed or implied Calibration and Repair Services Extech offers repair and calibration services for the products we sell Extech also provides NIST certification for most products Call the Customer Service Department for information on calibration services available for this product Extech recommends that annual calibrations be perfo
6. rmed to verify meter performance and accuracy T Support Hotline 781 890 7440 Tech support Ext 200 Email support extech com Repair Returns Ext 210 Email repair extech com Website www extech com Copyright 2005 Extech Instruments Corporation All rights reserved including the right of reproduction in whole or in part in any form 8 Model 407123 Version 5 0 3 05
7. rtment by prying the compartment off with a flat head screwdriver or a coin 3 Replace the six AAA 1 5V batteries observing polarity 4 Replace the battery compartment cover and the protective holster PC Interface The meter is equipped with an RS 232 PC Interface jack at the top of the meter next to the sensor input jack This port is for use with the Extech Part Number 407001 Data Acquisition software and interface cable kit Directions for use are supplied with the 407001 kit The interface kit allows the user to take measurements and view save the readings on a PC 6 Moda 407123 Version 5 0 3 05 Useful Equations and Conversions Area equations The volume of air flowing through a duct or vent can be determined by taking the area of the duct in square units i e square feet and multiplying this value by the measured linear velocity i e feet per minute This gives ft min x ft ft min CFM w NS aF A WxH A pixR Cubic equations CFM ft min Air Velocity ft min x Area ft CMM m min Air Velocity m sec x Area m x 60 Units Conversion Table 1ftmin 0 00508 0 00987 0 01829 0 01138 0 5144 101 27 1 8519 1 1523 1km hr 0 2778 54 69 0 6222 0 4464 87 89 0 8679 1 6071 7 Model 407123 Version 5 0 3 05 Warranty EXTECH INSTRUMENTS CORPORATION warrants this instrument to be free of defects in parts and workmanship for one year from date of shipment a six month limited warra
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