2333H 5/28/09 1:16 PM Page 1 28” and 48” Digital Level Model Nos. 40-6028 & 40-6048 Instruction Manual Congratulations on your choice of this Digital Level. We suggest you read this instruction manual thoroughly before using the instrument. Save this instruction manual for future use.
333H 5/28/09 1:16 PM Page 2 Table of Contents 1. Kit Contents 2. Features and Functions 3. Location of Parts/Components 4. Operating Instructions 5. 6. 7. 8. 9. Using the Product Self-Check and Calibration Technical Specifications Care and Handling Product Warranty 1. Kit Contents Description Model No. 40-6028 & 40-6048 Digital Level “AAA” Alkaline Batteries Instruction Manual Carrying Case Qty. 1 3 1 1 2.
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2333H 5/28/09 1:16 PM Page 4 4. Operating Instructions IMPORTANT: It is the responsibility of the user to verify the calibration of the instrument before each use. Battery Installation 1. Turn the electronic module off while taking out the old batteries from the battery case. 2. Open the battery cap, remove the old batteries and put in new ones. 3. Turn on the unit to see if all functions are correct. Note: 1. Be careful to follow the polarity symbol when replacing the batteries. 2.
2333H 5/28/09 1:16 PM Page 5 5. Using the Product Key Guide Zero Calibration/ Reference Mode Sound/ Hold Illumination Power Power Key Turn on/off the electronic module. The electronic module will beep twice when turned on and beep once when turned off. Hold Key Pressing this key will lock the current angle reading displayed on the LCD. At this time the measurement that you are measuring stays on your LCD.
2333H 5/28/09 1:16 PM Page 6 Mode Key Push the MODE button to switch from one dimension to another. This controls which dimension your electronic module will measure in. Your level has the capability to measure in Degrees, Percentage of slope, Millimeters per Meter, Inches per Foot (Slope, Pitch) in decimal form and Inches per Foot in fractions of an inch. A symbol on the upper right of the screen will explain which MODE you are currently in.
2333H 5/28/09 1:16 PM Page 7 Inclination Indication The triangle arrows displayed on the two ends of the LCD indicate the inclination direction of the digital level. When the digital level is at the position of 0 degree, the two arrows will show as follows: Rotating Display The LCD of the instrument can rotate 180 degrees.
2333H 5/28/09 1:16 PM Page 8 6. Self-Check and Calibration IMPORTANT: It is the responsibility of the user to verify the calibration of the instrument before each use. Checking the Horizontal Calibration Select a flat and horizontal platform as a reference surface, like a table-surface. 1. Place the digital level on this reference surface, as shown in figure 1, and then record the measured angle reading. Record this as A1. 2.
2333H 5/28/09 1:16 PM Page 9 Horizontal Calibration 1. Press and hold the CAL/REF key for 3-plus seconds, unit will beep once. When the LCD shows -0-, the digital level has entered the calibration mode. 2. Place the digital level on the horizontal reference surface, as shown in figure 5, after 10 seconds, press the CAL/REF again, and the LCD shows -1-. 3. Turn the digital level 180 degrees, as shown in figure 6, and after 10 seconds, press the CAL/REF key again, and the LCD shows -2-.
2333H 5/28/09 1:16 PM Page 10 7. Technical Specifications Range of Angle Measurement 360º, Display ± 90º Definition Rate 0.1º Accuracy ± 0.1º for 0º and 90º ± 0.2º for other angles Power Supply 3 “AAA” alkaline batteries Battery Life Approx. battery life 60 hours continuous use Working Temperature 14°F to 113°F (-10°C to +45°C) 8. Care and Handling • This unit is a precision tool that must be handled with care. • Avoid exposing unit to shock vibrations and extreme temperatures.
2333H 5/28/09 1:16 PM Page 11 • Do not use harsh chemicals, strong detergents or cleaning solvents to clean the unit. 9. Product Warranty Johnson Level & Tool offers a one year limited warranty on each its products. You can obtain a copy of the limited warranty for a Johnson Level & Tool product by contacting Johnson Level & Tool's Customer Service Department as provided below or by visiting us online at www.johnsonlevel.com.
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