User's Manual Heavy Duty Mini Vane CFM Thermo Anemometer Model 407117 WARRANTY EXTECH INSTRUMENTS CORPORATION warrants this instrument to be free of defects in parts and workmanship for three years from date of shipment (a six month limited warranty 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 for authorization. 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. Introduction Congratulations on your purchase of the Extech 407117 Heavy Duty Mini Vane CFM Thermo Anemometer. This meter uses a telescoping antenna sensor to measure Air Velocity, Air Flow and Temperature. An RS-232 PC interface provides data acquisition functionality. Proper use of this meter will provide years of reliable service. Support line (781) 890-7440 Technical support: Extension 200; E-mail: [email protected] Repair & Returns: Extension 210; E-mail: [email protected] Product specifications subject to change without notice For the latest version of this User’s Guide, Software updates, and other up-to-the-minute product information, visit our website: www.extech.com Extech Instruments Corporation, 285 Bear Hill Rd., Waltham, MA 02451 2 Model 407117 - Version 2.1 - November 2005 Specifications Circuit Custom LSI microprocessor circuit Display Dual function 0.5" (13 mm) 4-digit LCD Measurement units Air Velocity: m/s, km/h, ft/min, knots, mph; 3 3 Air Flow: CMM (m /min) and CFM (ft /min);Temp: °C and °F Data hold Freezes displayed reading Sampling rate 1 second approx. Sensors Air velocity/flow sensor: Low friction, ball-bearing vane; Temp. sensor: Precision thermistor MAX/MIN Memory Record and Recall Maximum and Minimum readings Automatic Power off Auto shut off after 15 minutes to preserve battery life Data Output RS 232 PC serial interface with 16-bit data stream output Operating Temperature Meter: 32 to 122°F (0 to 50°C); Sensor: 32 to 176°F (0 to 80°C) Operating Humidity Max. 80% RH Power Supply 9V battery (Heavy duty alkaline); optional AC adapter Power Current Approx. DC 8.3 mA Weight 1.6 lbs. (700 g) including battery & probe Dimensions Main instrument: 7 x 2.9 x1.3" (178 x 74 x 33mm) Telescoping Sensor: 0.5" diameter head; 23.6" (600mm) max antenna length with 39" (1m) cable Air Velocity Measurements Range Resolution Accuracy %rdg m/s (meters per sec) 0.80 – 12.00 m/s 0.01 m/s ± (2% + 0.2 m/s) km/h (kilometers per hour) 2.8 – 43.2 km/h 0.1 km/h ± (2% + 0.8 km/h) ft/min (feet per minute) mph (miles per hour) knots (nautical miles per hour ) Air Flow Measurements 160 – 2358 ft/min 1 ft/min ± (2% + 40 ft/m) 1.8 – 26.8 mph 0.1 mph ± (2% + 0.4 mph) 1.6 to 23.3 knots 0.1 knots ± (2% + 0.4 knots) Range Resolution Area 3 0.001 to 100 0 to 9,999m 0-999,900 ft /min 3 0.001 to 100 0 to 9,999ft Range Resolution Accuracy o 1.5 F (0.8 C) CMM (cubic meters per minute) 0-999,900 m /min CFM (cubic feet per minute) Air Temperature o o 32 - 176 F (0 - 80 C) 3 0.1 F/C o 2 2 o Model 407117 - Version 2.1 - November 2005 Meter Description 1. LCD Display 2. Keypad 3. Rubber protective holster 4. Battery compartment (rear) 5. RS-232 PC Interface jack 6. Sensor input plug 7. Telescoping antenna sensor Note: To access the rear battery compartment remove the meter's rubber protective holster. Meter Operation Air Velocity Measurements 1. Connect the sensor to the sensor input jack on top of the meter. 2. Turn on the meter using the Power button. 3. Select the VELOCITY function using the VEL/FLOW button. The LCD will display VEL when the velocity mode is selected. 4. Select the desired temperature units using the C/F select button. The LCD will reflect the current unit selection. 5. Select the desired air velocity units using the UNIT button. The LCD will reflect the current unit selection. 6. Open the antenna to the desired length. 7. Place the sensor in the air current to be measured. Have the air flow meet the sensor head in the direction of the word IN printed on the sensor head. 8. 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. Data Hold Feature 1. While taking measurements, press the HOLD button to freeze the LCD reading for later viewing. 2. The DH indicator will appear on the LCD when the display is in Data Hold mode. 3. Press HOLD again to return to normal operation. Maximum and Minimum Recording The 407117 allows the user to record and view the highest (MAX) and lowest (MIN) readings. 1. Press the RECORD/RECALL button once. The REC indicator will appear on the display and the meter will begin keeping track of the MAX and MIN values. 2. To view the MAX reading, press RECORD/RECALL again. The MAX indicator along with the maximum reading will appear on the LCD display. 3. Press RECORD/RECALL again to view the minimum value, the MIN indicator along with the minimum reading will appear on the LCD display. 4. To return to normal operation, press and hold the RECORD/RECALL button for approx. 3 seconds. The display indicators REC, MAX, and MIN will disappear. 4 Model 407117 - Version 2.1 - November 2005 Auto Power Off To save battery life, the meter will automatically shut off after approximately 15 minutes of operation. To disable this feature, press the RECORD/RECALL button and enter the RECORD mode. Air Flow Measurements (CMM / CFM) 1. Connect the sensor to the sensor input jack on top of the meter. 2. Turn on the meter using the Power button. 3. Select the FLOW mode using the VEL/FLOW button. The LCD will display FLOW when the flow function has been properly selected. 4. Select the desired air flow units: CMM (cubic meters per minute) or CFM (cubic feet per minute) using the UNIT button. The LCD will reflect the selection. 2 2 5. Press the SAMPLE AREA button to begin entering the area in m or ft . Use the button to increment the flashing digit, use the button to decrement the flashing digit, use the button to select the next digit, and use the MAX/MIN button to set the decimal point. Press the ENTER/RESET button when the area has been entered. The bottom display (normally used for the temperature display) will indicate the area 2 2 entered in ft or m . The main LCD displays the air flow in CFM (cubic feet per minute) or CMM (cubic meters per minute). If the CFM or CMM reading exceeds 9999, use the displayed X10 or X100 multiplier to calculate the reading. 6. For air flow measurements, three modes apply: The normal, default mode, where the actual flow is indicated, and the two modes described below: Press the FLOW/MODE button to select one of the two modes listed below: 2/3V MAX MODE: LCD displays 2/3 the measured value. AVG MODE: Up to 20 readings can be taken separately and averaged. Select the AVG mode via the FLOW/MODE button and then press the AVG/START button to take a reading. Up to 20 readings can be taken and averaged. The lower LCD display provides a 1 to 20 counter that increments each time a reading is taken. The main LCD displays the averaged air flow. 7. Note that the temperature function is not active in the AIR FLOW mode. RS-232 PC Interface The 407117 is equipped with a 3.5mm phone jack (meter top) for connection to a PC for TM data acquisition purposes. To obtain PC interface cabling and Windows data acquisition software, contact Extech Instruments. Instructions for use are provided with the optional data acquisition software/hardware kits. Battery Replacement When the LBT icon appears on the LCD, the 9V battery must be replaced. 1. Remove the rubber holster that surrounds the entire meter 2. Slide off the rear battery compartment 3. Replace the 9V battery 4. Affix the battery compartment cover and the meter holster 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 performed to verify meter performance and accuracy. Copyright © 2005 Extech Instruments Corporation. All rights reserved including the right of reproduction in whole or in part in any form. 5 Model 407117 - Version 2.1 - November 2005 Useful Equations and Conversions Area equations R H W Area of a circle = pi x R Area of a rectangle = W x H 2 Cubic equations 3 2 CFM (ft /min) = Air Velocity (ft/min) x Area (ft ) 3 2 CMM (m /min) = Air Velocity (m/sec) x Area (m ) x 60 Units Conversion Table m/s ft/min knots km/h MPH 1 196.87 1.944 3.6 2.24 1 ft/min 0.00508 1 0.00987 0.01829 0.01138 1 knot 0.5144 101.27 1 1.8519 1.1523 1 km/h 0.2778 54.69 0.54 1 0.6222 1 MPH 0.4464 87.89 0.8679 1.6071 1 1 m/s 6 Model 407117 - Version 2.1 - November 2005