Introduction
The Fluke 414D/419D/424D Laser Distance Meters (Meter or Product) are professional-grade laser distance meters. Use these Meters to quickly and accurately get the distance to a target, the area, and the volume measurements.
This Meter is better than an ultrasonic device because it uses laser light waves and measures their reflection. The Meter includes:
- Most advanced technology for distance measurements
- More accurate measurement
- Longer measurement distance – model dependent
This manual identifies when a feature is model-dependent. If not identified, all models include the feature.
How to Contact Fluke
To contact Fluke, call one of the following telephone numbers:
- Technical Support USA: 1-800-44-FLUKE (1-800-443-5853)
- Calibration/Repair USA: 1-888-99-FLUKE (1-888-993-5853)
- Canada: 1-800-36-FLUKE (1-800-363-5853)
- Europe: +31 402-675-200
- Japan: +81-3-3434-0181
- Singapore: +65-6799-5566
- Anywhere in the world: +1-425-446-5500
Or, visit Fluke's website at www.fluke.com.
To register your product, visit http://register.fluke.com.
To view, print, or download the latest manual supplement, visit http://us.fluke.com/usen/support/manuals.
Safety Information
A Warning identifies hazardous conditions and procedures that are dangerous to the user. A Caution identifies the conditions and procedures that can cause damage to the Product or cause permanent loss of data.
⚠️ Warning
To prevent eye damage and personal injury, do not look into the laser. Do not point the laser directly at persons or animals or indirectly off reflective surfaces.
⚠️ Warning
To prevent personal injury:
- Read all safety information before you use the Product.
- Carefully read all instructions.
- Use the Product only as specified, or the protection supplied by the Product can be compromised.
- Replace the batteries when the low battery indicator shows to prevent incorrect measurements.
- Do not use the Product around explosive gas.
- Do not use the Product if it operates incorrectly.
- Do not use and disable the Product if it is damaged.
Table 1 is a list of symbols used on the Product and in this manual.
| Symbol | Description |
|---|---|
| Battery status. | Battery status. |
| ➕ | Battery or battery compartment. |
| ❗ | Important information. See manual. |
| * | Warning. Laser. |
| C N10140 | Conforms to relevant Australian standards. |
| CE | Conforms to requirements of European Union and European Free Trade Association. |
| ♳ | Do not dispose of this product as unsorted municipal waste. Go to Fluke's website for recycling information. |
Electromagnetic Compatibility (EMC)
The term "electromagnetic compatibility" identifies that the Product operates smoothly in an environment where electromagnetic radiation and electrostatic discharges are present and does not cause electromagnetic interference to other equipment.
⚠️ Warning
The Product conforms to the most stringent requirements of the relevant standards and regulations. Yet, the possibility that it causes interference in other devices cannot be totally excluded.
❗ Caution
Never repair the Product yourself. In case of damage, contact Fluke (www.fluke.com).
FCC Statement (U.S.A Only)
This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation.
This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications.
However, there is no guarantee that interference will not occur in a particular installation.
If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference with one or more of these measures:
- Reorient or relocate the receiving antenna.
- Increase the separation between the equipment and receiver.
- Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
- Consult the dealer or an experienced radio/TV technician for help.
⚠️ Warning
Changes or modifications not expressly approved by Fluke for compliance could void the user's authority to operate the equipment.
Laser Classification
Integrated Distance Meter
The Meter produces a visible laser beam from the front of the Meter. Figure 1 shows the warning that is on the back of the Meter.
It is a Class 2 laser product in accordance with IEC60825-1 : 2007 "Radiation safety of laser products."
Figure 1 Description: The image shows the back of the Fluke laser distance meter. It displays a warning label indicating "LASER RADIATION DO NOT STARE INTO BEAM CLASS 2 LASER PRODUCT". It also shows the laser wavelength (λ=650nm,<1mW), compliance with EN60825-1:2007, Fluke Corp. details, manufacturing location (Hungary), CE and N10140 marks, and battery requirements (2 AAA NEDA 24A IEC LR03).
Laser Class 2 Products
Do not stare into the laser beam or direct it towards other people unnecessarily. Eye protection is normally afforded by aversion responses including the blink reflex.
⚠️ Warning
Do not look directly into the beam with optical aids. Looking directly into the beam with optical aids (for example, binoculars and telescopes) can be hazardous.
❗ Caution
Looking into the laser beam may be hazardous to the eyes.
Do not look into the laser beam. Make sure the laser is pointed above or below eye level, particularly with fixed installations in machines and similar setups.
Features
Table 2 is a list of features for the Meter by model.
| Feature | 414D | 419D | 424D | Feature | 414D | 419D | 424D | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Display Lines | 2 | 3 | 4 | Timer | • | • | |||||||||||||
| Memory[1] | 20 | 20 | Display/Keypad Illumination | • | • | ||||||||||||||
| Add/Subtract | • | • | • | Keypad Lock | • | • | |||||||||||||
| Area | • | • | • | Tripod Measurement | • | ||||||||||||||
| Volume | • | • | • | Compass | • | ||||||||||||||
| Continuous Measurement | • | • | • | Triangular Area | • | ||||||||||||||
| Pythagoras Calculations | 1+2 | Full | Full | Smart Horizontal Mode (Tilt) | • | ||||||||||||||
| Stake Out[2] | • | • | • | Height Tracking | • | ||||||||||||||
| Multifunction Endpiece | • | • | • | Room Corner Angle | • | ||||||||||||||
| Beeper | • | • | • | Handstrap | • | • | • | ||||||||||||
[1] 419D and 424D store a maximum of 20 complete display readouts.
[2] 419D uses 1 value. 424D uses 2 values.
Before You Start
This section has basic information about the batteries and measurement reference point. It also describes the Meter keypad and display.
Batteries
Replace the batteries when ? blinks in the display.
To install or replace the batteries:
- Remove battery compartment lid. See Figure 2.
- Attach the handstrap.
- Install two AAA (LR03) batteries with the correct polarity.
Note Do not use zinc-carbon batteries.
- Close the battery compartment.
❗ Caution
To prevent corrosion, remove the batteries before a long period of nonuse.
Figure 2 Description: The diagram illustrates the process of replacing batteries in the laser distance meter. It shows the meter's back cover being removed, the battery compartment with two AAA batteries being inserted with correct polarity, and the compartment lid being closed.
Multifunctional Endpiece
The 419D and 424D Meters adapt to multiple measurement situations with the multifunctional endpiece, see Figure 3:
- For measurements from an edge, fold out the endpiece (90°) until it locks into place. See Figure 4.
- For measurements from a corner, fold out the endpiece (90°) until it locks into place. Push the endpiece lightly to the right side to fold it out fully. See Figures 3 and 5.
- A built-in sensor automatically senses the orientation of the endpiece and adjusts the zero point.
Figure 3 Description: This diagram shows how to unfold the multifunctional endpiece. It depicts the endpiece being pulled out from the meter's body and locking into a 90-degree position.
Figure 4 Description: This illustration shows the laser distance meter being used to measure from an edge. The multifunctional endpiece is folded out at a 90-degree angle, and the laser beam is directed towards a target on a wall.
Figure 5 Description: This illustration shows the laser distance meter being used to measure from a corner. The multifunctional endpiece is folded out, and the meter is positioned to measure the corner of a room.
Keypad and Display
Keypad
Figure 6 shows the location of each function button on the keypad.
Figure 6 Description: This figure displays the keypad layouts for the Fluke 414D, 419D, and 424D laser distance meters. Each button is numbered and corresponds to a function listed below the diagrams. For example, button 1 is 'Measure/Power On', button 5 is 'Clear/Off', and button 9 is 'Area/Volume'.
| Number | Function |
|---|---|
| 1 | Measure/Power On |
| 2 | Plus (+)/Minus (-) |
| 3 | Plus (+)/Scroll Up |
| 4 | Minus (-)/Scroll Down |
| 5 | Clear/Off |
| 6 | Reference/Change Units |
| 7 | Area/Volume/Indirect Measurement (Pythagoras) |
| 8 | Indirect Measurement (Pythagoras and Stake Out) |
| 9 | Area/Volume |
| 10 | Memory |
| 11 | Timer |
| 12 | Tilt |
| 13 | Triangle |
| 14 | Compass |
Display
Figure 7 shows the readout location on the display for each function.
Figure 7 Description: This diagram illustrates the display screens for the Fluke 414D, 419D, and 424D laser distance meters, showing the position of various readouts and indicators. For example, readout 1 indicates 'Battery Status', readout 6 shows 'Measurement Readout', and readout 19 is 'Timer/Compass (424D only)'.
| Number | Label |
|---|---|
| 1 | Battery Status |
| 2 | Info |
| 3 | Area/Volume |
| 4 | Measurement Reference |
| 5 | Min/Max Measurement (Tracking Mode) |
| 6 | Measurement Readout |
| 7 | Units of Measurement |
| 8 | Pythagoras |
| 9 | Memory |
| 10 | Circumference |
| 11 | Wall Area |
| 12 | Addition/Subtraction |
| 13 | 2nd Result Available |
| 14 | Stake Out |
| 15 | Tilt Angle |
| 16 | Slope Distance |
| 17 | Indirect Height |
| 18 | Ceiling Area |
| 19 | Timer/Compass (424D only) |
| 20 | Leveling |
| 21 | Triangle Area |
Timer, Beeper, Backlight, and Keypad Lock
Timer (419D/424D)
Fluke recommends that you use a time-delay for the most accurate measurements at long distances. This prevents Meter movement when you push Measure.
To turn on the timer:
- Push Timer 1x to turn on the 5-second timer. This is the default time interval to release the laser for a measurement.
- Push Plus (+) to increase up to 60 seconds.
- Push Minus (-) to decrease the seconds.
- Push Measure to begin the timer.
The seconds until measurement (for example, 59, 58, 57...) show as a countdown. The last 5 seconds count down with a beep. After the last beep, the Meter makes the measurement and the value shows on the display.
Note The timer is useful for all measurements.
Beeper (419D/424D)
Push Units mft at the same time for 2 seconds to turn on and turn off the beeper. The display shows the status as BEEP On or BEEP OFF.
Backlight (419D/424D)
Push Units mft at the same time for 2 seconds to turn on and turn off the backlight. The display shows the status as ILLU On or ILLU OFF.
Keypad Lock (419D/424D)
To lock:
- Push ClearOff at the same time to lock the keypad.
To unlock:
- Push Measure.
- Push Plus (+) within 2 seconds to unlock the keypad.
Compass (424D) and Calibration
Compass (424D)
The compass feature lets you know the view or direction as you make measurements. This is useful indoors to set the building plans in the correct direction. It is also useful to know the correct direction when you calculate the efficiency for a solar panel.
Tips:
- Make sure that the endpiece is folded in.
- When you use the compass feature, the Meter shows the calibration message. See Compass Calibration for more information.
- Compass arrows blink on the display if the Meter is tilted >20° end to end or >10 ° side to side.
- When you turn on the compass, the Meter shows the calibration message. See Manual Calibration for more information.
Push Compass:
- 1x = Arrow points in north direction
- 2 seconds = Arrow points in direction of Laser beam and display shows the direction in degrees and an alpha symbol.
❗ Caution
To prevent incorrect direction readouts, do not use near magnets and magnetic devices.
Compass Calibration
Automatic Calibration
The compass sensor continuously collects and saves new calibration values in 60-second intervals.
Manual Calibration
When you turn on the compass, the Meter shows the calibration message:
- For no, push ClearOff. The compass uses old data that can be inaccurate.
- For yes, push Measure.
To continue with the calibration:
- Rotate the Meter 180° around the Z-axis. See Figure 8.
- Rotate the Meter 180° around the X-axis.
- Rotate the Meter 180° around the Y-axis.
The Meter counts from 1 to 12 during calibration. COMPA OK shows on the display when the calibration is complete.
Figure 8 Description: This diagram illustrates the three axes (X, Y, Z) around which the laser distance meter should be rotated during manual compass calibration. Each rotation is shown as 180 degrees.
Magnetic Declination
The difference between the north geographic pole and the north magnetic pole is known as magnetic declination, or more plainly, declination. The angle of declination is different at different locations on the earth. The geographic and magnetic poles are aligned so declination is minimal. From some locations, the angle between the two poles can be fairly large.
Table 4 is a list of the current angles of declination by location. For other declination values, contact your local Geomagnetic Institute.
To set the Meter with the correct compensation for your location:
- Push Memory Measure at the same time. The display shows DECLI and the current setting. The default value is 0 °.
- Push Plus (+) and Minus (-) to change the value.
- Push Measure to accept the new value.
Measurements
Clear, Measurements with a Tripod, and Reference Point
Clear
Push ClearOff:
- 1x = Clear last value
- 2x = Clear all
- 2 seconds = Turn off Meter
Measurements with a Tripod
Measurements with the 419D and 424D that use a tripod must have the tripod reference set. When set, Auto-detect shows on the display.
Reference Point
The display shows the reference point for a measurement. The default reference point is from the end of the Meter. If the beeper is on, the Meter beeps as you change the reference point. See Figure 9 for more information.
414D
Push Reference 1x to change the reference point between the front and the end of the Meter. The display shows front or end.
419D/424D
The Meter automatically adjusts the reference point when you use the endpiece and Auto-detect shows on the display.
Figure 9 Description: This diagram illustrates the concept of reference points for measurements. It shows the meter measuring from its front, its rear (end), and from a tripod screw. It also depicts the 'Auto-detect' feature when using a tripod.
Single Distance Measurement and Minimum/Maximum Tracking
Single Distance Measurement
To measure distance:
- Push Measure to turn on the laser.
- Push Measure again to make the distance measurement.
The measurement shows on the display.
Note Measurement errors can occur if you point the laser at colorless liquids, glass, Styrofoam, semi-permeable surfaces, and high-gloss surfaces. The measurement time increases when you point the laser at dark surfaces.
A target plate is useful for long distance measurements if the target reflectivity and illumination is a problem.
Minimum/Maximum Tracking
The tracking function measures the room diagonal (maximum value) and the horizontal distance (minimum value) from a stable measurement point. It also can find the distance between objects. See Figure 10.
Figure 10 Description: This diagram shows the minimum/maximum tracking function in use. It depicts the laser beam sweeping across a target area, illustrating how the minimum and maximum distances are measured.
To measure:
- Push and hold Measure for 2 seconds. tracking mode shows on the display to confirm that the Meter is in tracking mode.
- Move the laser side to side, up and down on the target area (for example, into the corner of a room).
- Push Measure to stop tracking mode.
The last measured value shows in the summary line.
Note 419D/424D Only: The values for maximum and minimum distances show in the display. The last measured value shows in the summary line.
Addition/Subtraction and Area
Addition/Subtraction
The Meter adds and subtracts a value to a single distance, area, and volume measurements.
414D
To add or subtract:
Push Plus (+):
- 1x = Add the next measurement
- 2x = Subtract the next measurement
419D/424D
To add or subtract:
- Push Plus (+) to add the next measurement to the previous measurement.
- Push Minus (-) to subtract the next measurement from the previous measurement.
- Do these steps again for each measurement.
The total measurement result is always shown in the summary line with the value before in the second line.
- Push ClearOff to cancel the last step.
Area
To measure area:
414D
- Push AreaVolumeHeight 1x. The Area symbol appears in the display.
- Push Measure to make the first measurement (for example, length).
- Push Measure again to make the second measurement (for example, width).
The result shows in the summary line.
419D/424D
To measure area:
- Push AreaVolumeHeight 1x. The Area symbol shows in the display.
- Push Measure to make the first measurement (for example, length).
- Push Measure again to make the second measurement (for example, width).
The result shows in the summary line.
- Push AreaVolumeHeight and hold for 2 seconds to get the 2nd result as a circumference.
Volume
414D
To measure volume:
- Push AreaVolumeHeight 2x. The Volume symbol shows in the display.
- Push Measure to make the first length measurement (for example, length).
- Push Measure again to make the second length measurement (for example, width).
- Push Measure again to make the third length measurement (for example, depth).
The result displays in the summary line.
419D/424D
To measure volume:
- Push AreaVolumeHeight 2x. The Volume symbol appears in the display.
- Push Measure to make the first measurement (for example, length).
- Push Measure again to make the second measurement (for example, height).
- Push Measure again to make the third length measurement (for example, depth).
The result shows in the summary line.
- Push AreaVolumeHeight x 2 seconds to show additional room information such as ceiling/floor area, surface area of the walls, circumference.
w Ceiling/floor area (424D)
v Wall area (419/424)
u Circumference (419D/424D)
Tilt, Smart Horizontal Mode, and Height Tracking (424D only)
Tilt (424D only)
Note The inclinometer senses tilts at 360 °. For tilt measurements, hold the Meter without a transverse tilt (±10 °).
Smart Horizontal Mode (424D only)
The Smart Horizontal mode (indirect horizontal distance) function lets you find a horizontal distance when the line-of-sight is blocked by an object or obstacle. See Figure 11 for more information.
The tilt is continuously shown as ° or %. To change the units, push and hold Memory Measure at the same time for 2 seconds. The default unit is °.
To measure:
- Push % 1x = Smart Horizontal Mode. Smart Horizontal shows in the display.
- Point laser at target.
- Push Measure. The display shows all results as α (angle ?), x (diagonal distance ?), and y (vertical distance ⬆️). The z (horizontal distance) shows in the summary line.
- Push % to turn off Smart Horizontal Mode.
Figure 11 Description: This diagram illustrates the Smart Horizontal Mode. It shows the laser distance meter measuring a horizontal distance (z) to a target that is obstructed, calculating it indirectly using an angle (α) and a diagonal distance (x) or vertical distance (y).
Height Tracking (424D only)
Height tracking shows continuously on the display as the Meter turns on a tripod. The tilt is continuously shown in the selected unit of measure as ° or %.
To measure:
- Push % 2x = Height tracking. Height Tracking shows in the display.
- Point the laser at lower target.
- Push Measure. Height Tracking shows in the display with the distance and angle to the lower target.
- Move the laser upwards to the top target. Height Tracking starts automatically. The display shows the angle to the actual target and the vertical distance from the lower target.
Leveling
The Leveling function continuously shows the angle of the Meter. From an angle of ±5°, the Meter starts to beep. As it gets near ±1°, the Meter beeps faster. At ±0.3°, the Meter beeps constantly.
To level:
- Push % 3x = Leveling. Leveling shows in the display.
- Put the Meter on object to do a test for level.
The angle continuously shows on the display as the object moves.
Figure 12 Description: This diagram illustrates the Height Tracking function. It shows the laser meter measuring the height between two points (h1, h2, h3) by taking measurements at different angles (α, β) and distances (x, y).
Tilt Sensor Calibration
To calibrate the tilt sensor:
- Push ClearOff at the same time for 2 seconds. The display shows CAL message and the instructions for the first measurement. See Figure 13.
- Put the Meter on a flat horizontal surface.
- Push Measure. The display shows the instructions for the subsequent measurement.
- Turn the Meter horizontally 180 ° on the same flat horizontal surface.
- Push Measure. The display shows the instructions for the subsequent measurement.
- Put the Meter upright on a flat horizontal surface.
- Push Measure. The display shows the instructions for the subsequent measurement.
- Turn the upright Meter 180° on the same flat surface.
- Push Measure. The display shows the calibration results as OK CAL.
Figure 13 Description: This diagram shows the step-by-step process for calibrating the tilt sensor. It depicts the meter being placed on a surface, rotated, and measurements being taken at various stages, with calibration status indicators.
Stake Out Measurement (419D/424D)
A specific distance can be set in the Meter and used to mark off defined measured lengths. An example of this application is in the construction of wooden frames. See Figure 14 for more information.
Note For best results, it is recommended to use the end reference point for a stake out measurement. See page 16 for more information.
Figure 14 Description: This diagram illustrates the Stake Out function. It shows how to set a distance and mark points along a line, with indicators showing when the target distance is achieved (a=b) or not (a≠b).
419D (1 Value)
To find stake out distances with 1 value:
- Push Stake Out 4x. Stake Out shows on the display.
- Push Plus (+) and Minus (-) to increase and decrease the value that shows in the summary line.
Note Hold the buttons down to increase the rate of change for the values.
- Push Measure to accept the value.
The display shows the stake out distance in the summary line between the stake out point and the Meter (rear reference).
4. Move the Meter slowly along the stake out line and the distance decreases on the display. The arrows in the display indicate in which direction the Meter needs to be moved in order to achieve the defined distance.
Note If the beeper feature is on, the Meter starts to beep at a distance of 0.1 m (4 in) from the next stake out point. As the Meter moves near to the stake out point, the beep changes and the arrows do not show on the display.
- Push ClearOff to stop the stake out function.
424D (2 Values)
You can enter two different distances (a and b) into the Meter and use them to mark off measured lengths, for example, in the construction of wooden frames.
To find stake out distances with 2 values:
- Push Stake Out 4x. Ta shows in the display.
- Push Plus (+) and Minus (-) to increase and decrease the values that shows on the display. The value (a), and the intermediate line that corresponds, blink on the display.
- Push Plus (+) and Minus (-) to adjust the (a) value.
Note Hold the buttons down to increase the rate of change for the values.
- Push Measure to accept the (a) value.
- Push Plus (+) and Minus (-) to adjust the (b) value.
- Push Measure to accept the (b) value.
The display shows the stake out distance in the summary line between the stake out point (a and then b) and the Meter (rear reference).
- Move the Meter slowly along the stake out line the displayed distance decreases.
q The arrows in the display indicate in which direction the Meter needs to be moved in order to achieve the defined distance (either a, or b).
Note If the beeper feature is on, the Meter starts to beep at a distance of 0.1 m (4 in) from the next stake out point. As the Meter moves near to the stake out point, the beep changes and the arrows do not show on the display.
- Push ClearOff to stop the stake out function.
Corner Angle Measurement (424D only)
The Meter calculates the angles in a triangle with measurements from the three sides. As an example, use this function with a right-angle room corner. See Figure 15 for more information.
To make corner angle measurements:
- Push Triangle 1x. Room Corner shows in the display.
- Put marks for the reference points to the right and left (d1/d2) of the angle for measurement.
- Push Measure to make a measurement of the first side of the triangle (d1 or d2).
- Push Measure to make a measurement of the second side of the triangle (d1 or d2).
- Push Measure to make a measurement of the third side of the triangle (d3).
- The result shows in the summary line as the room triangle area.
Figure 15 Description: This diagram illustrates the Corner Angle Measurement function. It shows the meter measuring the three sides (d1, d2, d3) of a triangle, likely representing a room corner, to calculate angles and area.
- Push Triangle for 2 seconds to get the second results as the angle between d1 and d2, the triangle circumference, and the area.
Indirect Measurement
The Meter can calculate distances with Pythagoras' theorem. With this function, you can find a distance with two auxiliary measurements, such as building height or width measurements. It is helpful to use a tripod for a height measurement that uses two or three measurements.
Note Make sure that you use the correct sequence of measurement:
- All target points must be in a horizontal or vertical plane.
- For the best results, turn the Meter about a set point. An example of this is with the endpiece fully open and the Meter on a wall.
- Make sure that the first measurement and the measurement distance are at 90 ° angles.
- The minimum/maximum tracking is very helpful for 90 ° angle measurements. See page 17 for more information.
414D
To find a vertical distance with two measurements (Pythagoras 1):
- Push AreaVolumeHeight 3x. Pythagoras 1 shows on the display.
- Point the laser at the first target (1). See Figure 16.
- Push Measure for the first distance (diagonal) measurement.
- Point the laser at the second target (2).
Figure 16 Description: This diagram illustrates the Indirect Measurement (Pythagoras 1) function for the 414D model. It shows the meter measuring a diagonal distance and then a second distance to calculate the vertical height.
- Make sure that the Meter is perpendicular to the wall.
- Push Measure for the second distance measurement.
The Meter shows the height in the summary line. The distance of the second measurement shows in the secondary line.
To find a total distance with three measurements (Pythagoras 2):
- Push AreaVolumeHeight 4x. Pythagoras 2 shows on the display.
- Point the laser at the first target (1). See Figure 17.
- Push Measure for the first distance (diagonal) measurement.
- Point the laser at the second target (2).
- Make sure that the Meter is perpendicular to the wall.
- Push Measure for the second distance.
- Point the laser at the third (3) target.
- Push Measure for the third distance measurement.
The Meter shows the height in the summary line. The distance is the total vertical height from the first to last targets. The third measurement shows in the secondary line.
Figure 17 Description: This diagram illustrates the Indirect Measurement (Pythagoras 2) function. It shows the meter measuring three distances to calculate the total vertical height.
As an option, use the tracking mode on one or more targets. To use tracking mode:
- Push and hold Measure for 2 seconds to start tracking mode.
- Move the laser side to side and up and down on the ideal horizontal target point.
- Push Measure to stop the tracking mode.
419D/424D
To find a distance with two measurements (Pythagoras 1):
- Push Triangle 1x. Pythagoras 1 shows on the display.
- Point the laser at the top point (1). See Figure 16.
- Push Measure.
- Point the laser at the second target (2).
- Make sure that the Meter is perpendicular to the wall.
- Push Measure for the second distance measurement.
The Meter shows the height in the summary line. The distance of the second measurement shows in the secondary line.
To find a total distance with three measurements (Pythagoras 2):
- Push AreaVolumeHeight 2x. Pythagoras 2 shows on the display.
- Point the laser at the first target. See Figure 17.
- Push Measure for the first distance (diagonal) measurement.
- Point the laser at the second target (2).
- Make sure that the Meter is perpendicular to the wall.
- Push Measure for the second distance.
Figure 18 Description: This diagram illustrates the Indirect Measurement (Pythagoras 3) function. It shows the meter measuring three distances to calculate a partial vertical distance.
7. Point the laser at the third (3) target.
8. Push Measure for the third distance measurement.
The Meter shows the result in the summary line. The measured distance to the subsequent measurement shows in the second line.
To find a partial distance, see Figure 18, with three measurements (Pythagoras 3):
- Push AreaVolumeHeight 3x. The laser turns on and Pythagoras 3 shows on the display.
- Point at the top target (1).
- Push Measure. The Meter stores this measurement value.
- Point the laser at the second diagonal target (2).
- Push Measure for the second distance measurement.
Memory, Maintenance, and Disable Meter
Memory (419D/424D)
You can recall a previous measurement from memory, for example, the height of a room. The Meter stores a maximum of 20 displays.
To recall:
- Push Memory 1x.
- Push Plus (+) and Minus (-) to move through the stored displays.
Memory and the memory ID show on the display.
- Push Memory for 2 seconds to use the value shown in the Summary line for further calculations.
To delete:
- Push ClearOff and Memory at the same time.
The Meter deletes all the stored values in memory.
Maintenance
Maintenance and calibration is not necessary for the Meter. To keep the Meter in good condition:
- Remove dirt with a moist, soft cloth.
- Do not put in water.
- Do not use aggressive detergents or solutions.
Disable the Meter
If damaged, do not use and disable the Meter. To disable, remove the batteries. See page 6 for more information.
Message Codes
Table 5 is a list of all message codes that show on the display with InFo or Error.
| Code | Cause | Remedy |
|---|---|---|
| 156 | Transverse tilt greater than 10 ° | Hold the Meter without a transverse tilt. |
| 162 | Calibration mistake | Make sure that the device is on a horizontal and flat surface. Do the calibration procedure again. If the code continues, contact Fluke. |
| 204 | Calculation error | Do the measurement again. |
| 252 | Temperature too high | Let the Meter cool down. |
| 253 | Temperature too low | Let the Meter warm up. |
| 255 | Received signal too low, measurement time too long | Change target surface (for example, white paper). |
| 256 | Received signal too high | Change target surface (for example, white paper) |
| 257 | Too much background light | Darken target surface. |
| 258 | Measurement outside of measurement range | Correct the range. |
| 260 | Laser beam interrupted | Do the measurement again. |
| Error | Hardware error | Turn on and turn off the device 2 to 3 times. If the symbol stays on the display, then your Meter is defective, contact Fluke. |
Specifications
Distance Measurement
| 414D | 419D | 424D | |
|---|---|---|---|
| Typical Measurement Tolerance[1] | ± 2.0 mm (± 0.08 in)[3] | ± 1.0 mm (± 0.04 in)[3] | |
| Maximum Measurement Tolerance[2] | ± 3.0 mm (± 0.12 in)[3] | ± 2.0 mm (± 0.08 in)[3] | |
| Range at target plate | 50 m / 165 ft | 80 m / 260 ft | 100 m / 330 ft |
| Typical Range[1] | 40 m / 130 ft | 80 m / 260 ft | |
| Range at unfavorable condition[4] | 35 m / 115 ft | 60 m / 200 ft | |
| Smallest unit displayed | 1 mm / 1/16 in | 1 mm / 1/32 in | |
| Ø laser point at distances | 6 mm @ 10 m / 30 mm @ 50 m / 60 mm @ 100 m 0.24 in @ 33 ft / 1.2 in @ 164 ft / 2.4 in @ 328 ft |
Tilt Measurement
| 414D | 419D | 424D | |
|---|---|---|---|
| Measurement tolerance to laser beam[5] | no | no | ± 0.2° |
| Measurement tolerance to case [5] | no | no | ± 0.2° |
| Range | no | no | 360° |
| Compass accuracy | no | no | 8 points (± 22.5°)[6] |
General
| 414D | 419D | 424D | |
|---|---|---|---|
| Laser class | 2 | ||
| Laser type | 635 nm, <1 mW | ||
| Protection class | IP40 | IP54 | |
| Automatic laser off | 90 seconds | ||
| Automatic power off | 180 seconds | ||
| Battery life (2 x AAA) 1.5 V NEDA 24A/IEC LR03 | up to 3,000 measurements | up to 5,000 measurements | |
| Dimensions (H x W x L) | 11.6 cm x 5.3 cm x 3.3 cm (4.6 in x 2.1 in x 1.3 in) | 12.7 x 5.6 x 3.3 cm (5.0 in x 2.2 in x 1.3 in) | |
| Weight (with batteries) | 113 g (4 oz) | 153 g (5 oz) | 158 g (6 oz) |
| Temperature range: Storage | -25 °C to +70 °C (-13 °F to +158 °F) | -25 °C to +70 °C (-13 °F to +158 °F) | |
| Operation | 0 °C to +40 °C (32 °F to +104 °F) | -10 °C to +50 °C (14 °F to +122 °F) | |
| Calibration cycle | Not applicable | Not applicable | Tilt and Compass |
| Maximum altitude | 3500 m |
Humidity, Safety, and EMC
| 414D | 419D | 424D | |
|---|---|---|---|
| Maximum relative humidity | 85 % at 20 °F to 120 °F (-7 °C to 50 °C) | ||
| Safety | IEC/EN 61010-1:2001 | ||
| IEC/EN 60825-1:2007 (Class 2) | |||
| EMC | EN 55022:2010 | ||
| EN 61000-4-3:2010 | |||
| EN 61000-4-8:2010 |
[1] Applies for 100 % target reflectivity (white painted wall), low background illumination, 25 °C.
[2] Applies for 10 to 500 % target reflectivity, high background illumination, -10 °C to +50 °C.
[3] Tolerances apply from 0.05 m to 10 m with a confidence level of 95 %. The maximum tolerance may deteriorate to 0.15 mm/m between 10 m to 30 m and to 0.2 mm/m for distances above 30 m.
[4] Applies for 100 % target reflectivity, background illumination ~ 30,000 lux.
[5] After user calibration. Additional angle related deviation of ±0.01° per degree up to ±45° in each quadrant. Applies at room temperature. For the whole operating temperature range the maximum deviation increases by ±0.1°.
[6] After calibration. Do not use the compass for navigation.
