User's Guide Digital Vane Thermo-Anemometer Model 451104
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 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 ext. 210 for authorization or visit our website at www.extech.com for contact information.
Operation Meter Power 1. This meter is powered by one 9V battery. To replace or install the battery, refer to the section ‘Battery Replacement’. 2. Press the ON-OFF button to turn the meter on. If the meter does not switch on, check the battery. 3. When the meter switches on it runs through a 2-second self-test. When the self-test is finished, the VEL display icon will appear in the upper left hand corner of the LCD. VEL is the Air Velocity indicator. When it appears, the meter is ready for use.
Minimum, Maximum, and Average Record / Recall This meter can be placed in the RECORD mode and keep track of the highest (MAX), lowest (MIN), and average (AVG) readings. The MIN, MAX, and AVG readings can be viewed at any time at the press of a button. To use these features, follow these steps: 1. Press the RECORD mode until a beep is heard 2. The REC display indicator will appear. The meter is now keeping track of the highest, lowest, and average readings 3.
PC Interface The meter is equipped with an RS-232c PC interface jack (3.5mm phono) for connection to a PC. The cable to connect the meter to the PC is included in the optional 407752 data TM acquisition kit. The kit includes Windows software that allows the user to store readings in a text file and display real-time measurements in a series of selectable formats. For more information or specific operating instructions, refer to the User Guide included with the 407752 kit or contact Extech Instruments.
Specifications General Specifications Display Dual LCD display: 0 to 9999 digits for Air Velocity and 0 to 1999 digits for Temperature readings Operating Temperature 14 °F to 122 °F (-10 °C to 50 °C) Operating Humidity 80% Relative Humidity (maximum) Meter Power 9V battery Battery life 100 hours of continuous use Auto Power OFF Meter turns off after 20 minutes automatically Weight 1.5 lb (680g) Meter Dimensions 7.20 x 2.99 x 1.77” (183 x 76 x 45 mm) Sensor Vane Diameter 2.
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. Support line (781) 890-7440 Technical support: Extension 200; E-mail: support@extech.com Repair & Returns: Extension 210; E-mail: repair@extech.
