User Guide Laser Distance Finder Extech DT300
Introduction Congratulations on your purchase of the Extech Model DT300 Laser Distance Finder. This meter measures Distance up to 164 ft (50m) and calculates Area and Volume. In addition, the DT300 includes a laser pointer for accurate targeting. This meter is shipped fully tested and calibrated and, with proper use, will provide years of reliable service. Safety Instructions This meter has been designed for safe use, but must be operated with caution.
Meter Description 2 Front Panel 1. Laser Pointer 2. Laser Test Beam 3. LCD display area 4. Keypad (described below) 5. Battery compartment on rear of instrument 1 3 4 5 Display 1. Laser Status icon appears when laser is active 2. Reference level (Top) 3. Reference Level (Bottom) 4. Area, Volume, and Indirect Measurement icons 5. Single Distance Measurement mode 6. Battery status icon 7. Reading Memory Location Number 8. Error icon 9. Continuous MIN-MAX measurement mode 10. Display Line 1 11.
Operating Instructions Measurement Considerations 1. For best results, choose a target that is flat, hard and smooth 2. Use a section of cardboard or similar material if the target size needs to be increased 3. Replace the battery if the battery icon appears on the display 4. The meter will not measure through glass, liquid, or Styrofoam 5.
MAX-MIN Continuous Measurement Mode This mode of operation is useful for determining the shortest and longest distances from a given point. 1. Press the MEAS button to switch the meter ON. 2. Press and Hold the MAX/MIN button for 3 seconds to begin a continuous measurement session. 3. The meter will beep with each new measurement update (approx. every one half second). 4.
Volume Calculation The DT300 allows the user to compute room Volume. 1. Press the MEAS button to switch the meter ON. Wait several seconds and the Laser pointer will automatically switch ON. 2. Press the 3. A cube shape will appear with its Length side flashing measurement is to be taken. 4. Press MEAS to take the room Length measurement. 5. The cube’s Width side will now be flashing is to be taken. 6. Press MEAS to switch the Laser pointer ON again. 7.
Indirect Measurements (Using Three Measurements) The DT300 can measure height in two segments by taking three measurements. The operator stands at Point X. The first measurement is Point X to 1, the second measurement is a horizontal line from Point X to 2, and the third measurement is from Point X to 3. 1 2 X 3 1. Press the MEAS button to switch the meter ON. Wait several seconds and the Laser pointer will switch ON. 2. Press the button two times. 3. The triangle icon 4.
Storing and Recalling Readings The DT300 stores up to twenty (20) readings in memory for later recall. 1. Take a reading as previously described. 2. With the reading displayed, press the 3. The reading will be stored in location 1. 4. Take another reading press the store button. This new reading will be stored in location 1 and the previous reading from location 1 will be moved to location 2. 5. When all twenty locations have been filled the meter begins overwriting the existing readings. 6.
Maintenance WARNING: Do not operate the meter until the battery compartment cover is in place and fastened securely. This instrument is designed to provide years of dependable service, if the following care instructions are performed: 1. Keep the meter dry and free from dust. 2. Use and store the meter in nominal temperature conditions. Temperature extremes can shorten the life of the electronic parts and distort or melt plastic parts. 3. Handle the meter carefully and avoid shock and vibration.
Specifications General Specifications Laser diode Class 2 red laser (wavelength: 635nm) Battery Two (2) ‘AAA’ alkaline batteries Dust/Splash Proof IP 54 Operating conditions 32 to 104°F (0 to 40°C) Storage conditions 14 to 140°F (-10 to 60°C) Dimensions 4.5 x 1.9 x 1.1” (115 x 48 x 28mm) Weight 5.3 oz. (150g) Recommended use For indoor use only Range Specifications Distance Range 2” to 164’ (0.5 to 50m) Resolution 0.001 inches, feet, or meters Accuracy ± 0.06” (±1.
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 to 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 www.extech.com for contact information.
