Laser Distance Meter User Manual

Content

• 1. Safety Instruction - Page 4
• 2. Start-Up - Page 6
• 3. Initial Operation and Setting - Page 8
• 4. Measuring - Page 10
• 5. Functions - Page 11
• 6. Technical Data - Page 15
• 7. Troubleshooting – Causes and Corrective Measures - Page 17
• 8. Measuring Conditions - Page 18
• 9. Labelling - Page 19

The compact and handy base model was specifically designed for indoor applications. Shortcut and Soft grip keys for addition, subtraction, area and volume calculation make measuring fast and very reliable.

1. Safety Instruction

Permitted Use

• Measuring distances
• Computing functions, e.g., areas and volumes

Prohibited Use

• Using the instrument without instruction
• Using outside the stated limits
• Deactivation of safety systems and removal of explanatory and hazard labels
• Opening of the equipment by using tools (screwdrivers, etc.), as far as not specifically permitted for certain cases
• Carrying out modification or conversion of the product
• Use of accessories from other manufacturers without the express approval of the manufacturer.
• Deliberate or irresponsible behavior on scaffolding, when using ladders, when measuring near machines which are running, or near parts of machines or installations which are unprotected
• Aiming directly into the sun
• Inadequate safeguards at the surveying site (e.g., when measuring on roads, construction sites, etc.)

Laser Classification

The instrument produces a visible laser beam. This is a Class 2 laser product. Eye protection is normally afforded by aversion responses including the blink reflex.

WARNING: Looking directly into the beam with optical aids (e.g., binoculars, telescopes) can be hazardous. Precautions: Do not look directly into the beam with optical aids.

CAUTION: Looking into the laser beam may be hazardous to the eyes. Precautions: Do not look into the laser beam. Make sure the laser is aimed above or below eye level.

2. Start-Up

Inserting/Replacing Batteries

Figure A shows the battery compartment lid being removed and batteries inserted, observing correct polarity. The compartment is then closed.

Replace batteries when the "LOW BATTERY" symbol flashes permanently. Use alkaline batteries only. Remove batteries before long periods of non-use to avoid corrosion.

Keypad

Figure B illustrates the keypad layout with numbered buttons corresponding to functions:

• 1 - ON/MEAS button
• 2 - Area/Volume button
• 3 - Indirect measurement button
• 4 - Single/Continuous Distance measurement button
• 5 - Plus (+) button
• 6 - Minus (-) button
• 7 - Storage button
• 8 - Reference button
• 9 - Illuminating/UNITS button
• 10 - Clear/Off button

3. Initial Operation and Setting

Switching On and Off

Press the [MEAS] button to switch on the instrument and laser. Press and hold the [CLR] button to switch off the instrument. The instrument switches off automatically after three minutes of inactivity.

Clear Button

Press the [CLR] button to cancel the last action or clear the data display.

Reference Level Setting

Figure D shows the instrument being used for reference level setting, indicating the default rear reference and the option to select the front edge. The default reference setting is from the rear of the instrument. Press the [Unit] button to select the front edge as the reference. A special beep sounds when the setting changes. After a restart, the reference returns to the default (rear).

Display Illumination

Click the [Unit] button to switch the display illumination on or off. This is useful in darkness.

Distance Unit Setting

Click and hold the [Unit] button to cycle through unit selections: m, ft, in, ft+in. Continue clicking to select the desired unit.

4. Measuring

Single Distance Measurement

Press [MEAS] to activate the laser. Press [MEAS] again to trigger the distance measurement. The measured value is displayed immediately.

Continuous Measurement (Tracking) & Max and Min Measurement

Figure E illustrates continuous measurement (tracking) and Max/Min measurement. It shows the device measuring distance from a wall, with the measured value updating and Max/Min values displayed. This function is used for transferring measurements, e.g., from construction plans. In continuous mode, the tool can be moved to the target, updating the value approximately every 0.5 seconds. Maximum and minimum values are displayed dynamically. Push the [MAX/MIN] button until the continuous measurement indicator appears. Press again to stop. The function terminates after 100 measurements.

5. Functions

Addition / Subtraction

For addition, press [MEAS] after the first measurement; the second value is shown, and the result is displayed automatically.

For subtraction, press [MEAS] after the first measurement; the second value is subtracted, and the result is shown in the summary line.

Press [CLR] to cancel the last step.

Press [MAX/MIN] to return to single distance measurement.

Area Measurement

Press [MEAS] once. The area symbol appears. Press [MEAS] again to take the first length measurement (e.g., length). Press [MEAS] a third time to take the second length measurement (e.g., width). The area is automatically calculated and displayed.

Volume Measurement

Press the [Area/Volume] button twice until the volume symbol appears. Press [MEAS] to measure length, press [MEAS] again for width, and press [MEAS] again for height. The volume is automatically calculated and displayed.

Indirect Measurement

Figures G, H, and I illustrate indirect measurement using two or three auxiliary measurements, showing angles and distances.

Indirect Measurement (2 Measurements): Press the indirect measurement button once; the display shows a symbol. Aim at the upper point (1) and trigger measurement [MEAS]. After the first measurement, the value is adopted. Keep the instrument horizontal. Press and hold [MEAS] for continuous measurement; the horizontal line is measured. The result is displayed in the summary line, and partial results in the secondary line.

Indirect Measurement (3 Measurements): Press the indirect measurement button twice; the display shows a symbol. Aim at the upper point (1) and trigger measurement [MEAS]. After the first measurement, the value is adopted. Keep the instrument horizontal. Press and hold [MEAS] for continuous measurement (2), the value is adopted. Aim at the lower point and press [MEAS] (3) to trigger the measurement. The result is displayed in the summary line, with partial results in the secondary lines.

Historical Storage

The device stores the previous 20 records (measurements or calculated results). Use the [+] or [-] buttons to navigate through these records.

6. Technical Data

Technical Specifications

* Use a target plate to increase the measurement range during daylight or if the target has poor reflection properties. ** In favourable conditions (good target surface properties, room temperature) up to 10 m (33 ft). In unfavourable conditions, such as intense sunshine, poorly reflecting target surface or high temperature variations, the deviation over distances above 10 m (33 ft) can increase by ± 0.15 mm/m (± 0.0018 in/ft).

7. Troubleshooting – Causes and Corrective Measures

8. Measuring Conditions

Measuring Range

The range is limited to 50m. Use a target plate to increase range during daylight or for targets with poor reflection properties. Measuring range can be increased at night or in shadow without a target plate.

Target Surfaces

Measuring errors may occur with colorless liquids (e.g., water) or dust-free glass, Styrofoam, or similar semi-permeable surfaces. Aiming at high gloss surfaces may deflect the laser beam and lead to measurement errors. Non-reflective and dark surfaces may increase measuring time.

Care

Do not immerse the instrument in water. Wipe dirt with a damp, soft cloth. Do not use aggressive cleaning agents or solutions. Handle the instrument as you would a telescope or camera.

9. Labelling

The instrument features a caution label indicating: LASER RADIATION, DO NOT STARE INTO BEAM, MAXIMUM OUTPUT < 1mW, WAVELENGTH 630-670nm, CLASS 2 LASER PRODUCT. It also advises to PLEASE READ MANUAL FOR SAFETY. The label shows "Type:100 by CEM", battery information (2x "AAA" 1.5V), CE mark, and a recycling symbol.

The CEM website is www.cem-meter.com.cn.