Fluke 421D User Manual Download Page 1

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September 2009 Rev.1, 3/10
© 2009, 2010 Fluke Corporation. All rights reserved. Specifications are subject to change without notice.
All product names are trademarks of their respective companies.

421D

Distance Meter

Users Manual

Summary of Contents for 421D

Page 1: ...2009 Rev 1 3 10 2009 2010 Fluke Corporation All rights reserved Specifications are subject to change without notice All product names are trademarks of their respective companies 421D Distance Meter Users Manual ...

Page 2: ...r nearest Fluke authorized service center to obtain return authorization information then send the product to that service center with a description of the difficulty postage and insurance prepaid FOB Destination Fluke assumes no risk for damage in transit Following warranty repair the product will be returned to Buyer transportation prepaid FOB Destination If Fluke determines that failure was cau...

Page 3: ...ed use 1 Limits of use 2 Areas of responsibility 2 Responsibilities of the manufacturer Fluke 2 Responsibilities of the manufacturer of non Fluke accessories 2 Responsibilities of the person in charge of the instrument 2 Hazards in use 3 Precautions 3 Safety Instructions 3 Symbols 3 Electromagnetic Compatibility EMC 4 ...

Page 4: ... in the menu 10 General description 10 Setting the unit for distance measurements 12 Setting the unit for tilt measurements 12 Beep BEEP 12 Continuous laser 12 Measuring with the tripod TRIPOD 12 Display keypad illumination 13 Reset returning the instrument to the factory settings RESET 13 Operation 13 Switching on and off 13 CLEAR button 13 Display keypad illumination 13 Reference setting 13 Meas...

Page 5: ...etermining a distance using 2 auxilliary measurements 19 Indirect Measurement determining a distance using 3 measurements 20 Indirect measurement determining a chain value using 3 measurements 20 Storage of constants historical storage 21 Storage of a constant 21 Recalling the constant 21 Historical storage 21 Timer self triggering 21 Appendix 22 Message codes 22 Technical data 23 Measuring condit...

Page 6: ...421D Users Manual iv ...

Page 7: ... 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 Use of the instrument Permitted use Measuring distances Computing functions e g areas and volumes Measuring tilts Prohibited use Using the instrument without instruction Using outside the stated limits ...

Page 8: ...luding the User Manual and original accessories in a completely safe condition Responsibilities of the manufacturer of non Fluke accessories The manufacturers of non Fluke accessories for the 421D are responsible for developing implementing and communicating safety concepts for their products They are also responsible for the effectiveness of these safety concepts in combination with Fluke equipme...

Page 9: ...ase of an erroneous measurement malfunction of the device or power failure due to installed safety measures for example safety limit switch it is assured that no damage will occur W Warning Flat batteries must not be disposed of with household waste Care for the environment and take them to the collection points provided in accordance with national or local regulations The product must not be disp...

Page 10: ...diation and electrostatic discharges are present and without causing electromagnetic interference to other equipment W Warning The 421D conforms to the most stringent requirements of the relevant standards and regulations Yet the possibility of it causing interference in other devices cannot be totally excluded W Caution Never attempt to repair the product yourself In case of damage contact Fluke ...

Page 11: ...d void the user s authority to operate the equipment Laser classification Integrated distance meter The 421D produces a visible laser beam which emerges from the front of the instrument It is a Class 2 laser product in accordance with IEC60825 1 2007 Radiation safety of laser products Laser Class 2 products Do not stare into the laser beam or direct it towards other people unnecessarily Eye protec...

Page 12: ...ttach handstrap 2 Insert two AAA LR3 batteries observing correct polarity 3 Close the battery compartment again Replace the batteries when the symbol flashes permanently in the display Note Use alkaline batteries only Note Remove the batteries before any long period of non use to avoid the danger of corrosion A ...

Page 13: ...apted for the following measuring situations For measurements from an edge fold out the positioning bracket until it first locks in place See figure C C For measurements from a corner open the positioning bracket until it locks in place then push the positioning bracket lightly to the right to fold it out fully See figure D ...

Page 14: ...e zero point of the instrument accordingly Keypad See figure E 1 Measure Min Max Power On 2 Plus Scroll up 3 Minus Scroll down 4 Area volume 5 Tilt function Stake out 6 Reference 7 Timer 8 Memory 9 Clear off 10 Setup mem equal 11 Room corner triangle angles 12 Indirect measurement Pythagoras 1 2 3 4 5 7 8 9 10 11 12 6 E ...

Page 15: ...lue 12 Historical memory call up values 13 Battery status 14 Timer 15 Area volume 16 Tilt 17 Horizontal distance measurement using tilt 18 Room corner angle function 19 Menu 20 Continuous laser 21 Reset 22 Reference tripod 23 Beep 24 Circumference 25 Wall area 26 Ceiling area 27 Intermediate line 1 28 Intermediate line 2 29 Intermediate line 3 30 Summary line 31 Message code indicator min b max a ...

Page 16: ...ifically configured to your personal requirements General description button long press brings up the MENU the set units and the symbol UNIT are displayed button short press pages through each menu item See figure G or button to make changes in menu items button short press brings up the next menu item A long press on the button in the menu confirms the new settings made in the submenu items Press...

Page 17: ...Distance Meter Menu functions 11 EXIT 3 4 5 6 7 2 1 G ...

Page 18: ... Beep BEEP You can switch the beep on or off Menu Beep function 3 1 On 3 2 Off Continuous laser You can switch the continuous laser function on or off Menu Continuous laser function 4 1 On 4 2 Off With the continuous laser function set on each press of the button triggers a measurement The laser automatically switches off after 15 minutes Measuring with the tripod TRIPOD The reference must be appr...

Page 19: ...zed settings and stored values are also lost Operation Switching on and off Switches on the instrument and laser The display shows the battery symbol until the next button is pressed Pressing this button for longer switches the instrument off The instrument switches off automatically after six minutes of inactivity CLEAR button The last action is cancelled While making area or volume measurements ...

Page 20: ...ance measurement Press to activate the laser Press again to trigger the distance measurement The result is displayed immediately Minimum maximum measurement This function allows the user to measure the minimum or maximum distance from a fixed measuring point It can also be used as to determine spacings See figure I Min Max I It is commonly used to measure room diagonals maximum values or horizonta...

Page 21: ...ess this button to take the first length measurement for example length Press it again to take the second length measurement for example width The result is displayed in the summary line Press the button long press to calculate the circumference Volume Press this button twice The symbol appears in the display Press this button to take the first length measurement for example length Press this butt...

Page 22: ...brate the device s tilt sensor The angle sensor is switched on by pressing the once Then two measurements are taken on a flat surface The first measurement is taken and a note is made of the measured angle a The device is then turned through exactly 180 the second measurement is taken and a note is made of the measured angle b The value x to which the device must be corrected is calculated as foll...

Page 23: ...o mark off defined measured lengths for example in the construction of wooden frames See figure L 1 2 3 L a b b a b b 1 2 3 a b 0 625 m 0 625 m 0 625 m 1 025 m 0 625 m 0 625 m Entering stake out distances Press this button three times and the stake out function symbol appears in the display The value a and the corresponding intermediate line flash By using and you can adjust the values first a and...

Page 24: ...oon as the stake out point is reached the beep changes and the arrows in the display disappear The function can be stopped at any time by pressing the button Room corner angle function The angles in a triangle can be calculated by measuring the three sides This function can be used e g to check a right angled room corner See figure M M Press this button and the room corner symbol appears in the di...

Page 25: ...ll other measurements Note Make sure that the first measurement and the distance to be measured are at right angles Use the Minimum maximum function as explained in Measuring Minimum maximum measurement Indirect measurement determining a distance using 2 auxilliary measurements See figure N 1 2 N For example for measuring building heights or widths It is helpful to use a tripod when measuring heig...

Page 26: ...measurement sweep the laser up and down over the ideal horizontal target point Press to stop continuous measurement 2 The value is adopted Aim at the lower point and press this button to trigger the measurement 3 The result is displayed in the summary line the partial results in the secondary lines Indirect measurement determining a chain value using 3 measurements See figure P 1 2 3 P fig_p eps F...

Page 27: ...stant Press this button once to recall the constant and make it available for further calculations by pressing button Historical storage Press this button twice and the previous 20 results measurements or calculated results are shown in reverse order The and buttons can be used for navigation Press this button to use a result from the summary line for further calculations Pressing the and buttons ...

Page 28: ... high Cool down instrument 253 Temperature too low Warm up instrument 255 Receiver signal too weak measurement time too long distance 100 m Use target plate 256 Received signal too strong Target too reflective use target plate 257 Wrong measurement background brightness too high Darken target measure in different lighting conditions 260 Laser beam interrupted Repeat measurement Error Cause Remedy ...

Page 29: ...sor Accuracy 2 σ standard deviation to laser beam to the housing 0 3 0 3 Indirect measurement using tilt sensor direct horizontal distance Angle measurement using tilt sensor 45 General Laser class II Laser type 635 nm 1 mW laser point at distances 6 30 60 mm 10 50 100 m Automatic laser switch off after 3 min Automatic instrument switchoff after 6 min Display illumination Keypad illumination Multi...

Page 30: ... F 7 C to 50 C Pollution degree 2 Safety CAN CSA C22 2 No 61010 1 04 UL Std No 61010 1 2nd Edition ISA 82 02 01 IEC Standard No 61010 1 2001 and EN60825 1 2007 Class II EMC 61326 1 2006 maximum deviation occurs under unfavorable conditions such as bright sunlight or when measuring to poorly reflecting or very rough surfaces Measuring accuracy between 10 m and 30 m may deteriorate to approx 0 025 m...

Page 31: ... surfaces Measuring errors can occur when measuring toward colorless liquids for example 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 Against non reflective and dark surfaces the measuring time may increase Care and Cleaning Do not immerse the instrument in water Wipe off dirt with a da...

Page 32: ...421D Users Manual 26 ...

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