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1. 86 21 5878 7888 Email infosh uni trend com cn http www uni trend com cn2. Weight 100g Including batteries Laser Type 635nm lt 1mW Laser Class Class Il 23 UT 391 OPERATING MANUAL Dust Protect Splash proof IP54 Auto power off after 3 min Auto laser switch off after 0 5 min Environmental Requirements Altitude 2000m Operating Temperature 0 C to 40 C 32 F to 104 F Storage Temperature 10 C to 60 C 14 F to 140 F Following standards EN61326 1 EMC EN60825 1 Laser Safety 24 UT 391 OPERATING MANUAL Specifications Laser distance meter UT391 0 1m 60m 1 5mm Measuring distances 4 in 197 ft 0 06 in Measuring units m in ft Area Volume Calculations Y m f m f Indirect Measuring with x Two or three measurements Pythagorean Addition Subtraction v Continuous Measurement N Max Min v UT 391 OPERATING MANUAL multi line display x Up to four lines show Reference level setting x Front edge or end piece edge Buzzer indication v Backlight v white Auto Bias Technology v Support for external calibration error indication v Display error code Hold N Automatic History measurement recodes Y 20 records Clear v Keyboard Type Super Soft Touch Long life Over 1 Million Times 26 UT 391 OPERATING MANUAL during daylight or if the target has poor reflection properties in favorable conditions good target surface prope
3. from the previous one Then press the button gt the result is shown in the summary line with the previous value in the second line Operate the above steps repeatedly the meter will add or reduce cumulatively The last step is cancelled 17 UT 391 OPERATING MANUAL Area Press once The Agr symbol appears in the display Press 4 button to take the first length measurement e g length Press C4 again to take the second length measurement e g width After taking the second measurement the area surface is automatically calculated and displayed in the summary line The last individual measured value is indicated at the second line in the display Volume For volume measurements push button 7 twice until the t3 indicator for volume measurement appears in the display Afterwards Press this button to measure the length Press this button for width 18 UT 391 OPERATING MANUAL Press button to take the height After taking the third measurement the volume is automatically calculated and displayed The last individual measured value is not displayed Indirect measurement when measuring heights that require the measurement of two or three measurements as following step using 2 measurements 1 Press this button the display A shows G5 Aim at the upper point 1 and trigger the measurement After the first measurement the value is adopted 19 UT 391 OPERATING MANUAL Keep the instrument as hori
4. P N 110401102220 UT 391 OPERATING MANUAL Table of Contents Title Page UT391 Product Introduction 3 aE 4 Il Unpacking Inspection I Safety Instruction _ _ _ _ _ _ 5 IV Meter Structure 9 V Setting and Operation of Meter EE S ee 12 VI Technical specifications _ _ _ _ 23 RD 28 VII Maintenance z 5 S E B UT 391 OPERATING MANUAL UT 391 OPERATING MANUAL I UT391 Product Introduction UT391 Handheld Laser Distance Meter is specially designed for users It is a meter with high precision and multi function distance measurement UT391 can measure distance area and volume Pythagorean Laws can also be used in UT391 to measure indiectly UT391 which is light easy to use and reliable to measure can make sure your measurement more accuracy easier and faster UT391 can widely apply to Construction Upholster Property Traffic Fire Fighting Gardens Urban Planning Water Mornitoring Electric Power Overhaul etc As the replacer of traditional measuring instrument for example measuring tape UT391 is your best choice UT 391 OPERATING MANUAL Il Unpacking Inspection Unpack and check if there is any damage or loss contact with the nearest local sales service agency 1 Mainframe one un
5. PERATING MANUAL V Setting and Operation of Meter Switching on and off amp amp 5 Switches on the instrument and laser Press this button lo longer to switch off the instrument The instrument switches off automatically after three minutes of inactivity CLEAR button The last action is cancelled or the data display is cleared 12 UT 391 OPERATING MANUAL Reference level setting qug The default reference setting is from the rear of the instrument 13 UT 391 OPERATING MANUAL Press this button to take the selection from the front edge A special beep sounds whenever the reference setting is changed After a re startup the reference returns automatically to the default setting rear reference Press this button again to take the next selection from end piece edge Press this button i to set the rear reference again In a word to select the reference level push button repeatedly until the required reference level is indicated in the display Each time after switching on the rear edge of the measuring tool is preset as the reference level Display illumination Model UT 391 OPERATING MANUAL UT 391 OPERATING MANUAL Click illumination button of the display can be switched on or off User can trigger the function when he she is in darkness situation The value is clear viable on the LCD Distance unit setting for instrument Click the button longer change the next type of unit m ft in ft in then to
6. continue click the button for the next unit selection Measuring Single distance measurement Press to activate the laser Press again to trigger the distance measurement The measured value is displayed immediately Continuous Measurement amp Max and Min Measurement 15 min UT 391 OPERATING MANUAL The continuous measurement function tracking is used for the transferring of measurements e g from construction plans In continuous measurement mode the measuring tool can be moved close to the target whereby the measured value is updated approx every 0 5 seconds The corresponding dynamically maximum and minimum values are displayed in the first and second line As an example the user can move from a wall to the required distance while the actual distance can be read continuously For continuous measurement press G3 button until the indicator for continuous measurement 16 Model UT 391 OPERATING MANUAL UT 391 OPERATING MANUAL appears in the display And press it again or press 4 to stop the function The function is terminated after 5 minutes continuous measurement With this function customers can measure the max and min distance from a certain point Functions Addition subtraction Distance measuring The next measurement is added to the previous one then press the button C gt the second measured value is shown and the result is shown automatically The next measurement is subtracted
7. it 2 User manual one copy 3 AAA battery 2x1 5V one piece 4 Carrying case one unit 5 Mini screwdriver one piece UT 391 OPERATING MANUAL Ill Safety Instruction Permitted use e Measuring distances e Computing functions e g areas and volumes e Indirect Measuring with Pythagorean Prohibited use e Using the instrument without instruction e Using outside the stated limits e Deactivation of safety systems and removal of explanatory and hazard labels e Opening of the equipment by using tools screwdrivers etc as far as 5 UT 391 OPERATING MANUAL not specifically permitted for certain cases e Carrying out modification or conversion of the product e Use of accessories from other manufacturers without the express approval of UNI T e 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 e Aiming directly into the sun or glare e Deliberate dazzling of third parties also in the dark Inadequate safeguards at the surveying site e g when measuring on roads construction sites etc UT 391 OPERATING MANUAL Laser classification The UT391 produced a visible laser beam which emerges from the front of the instrument Laser Class II products Do not stare into the laser beam or direct it towards other people unnecessarily Eye protection is normally afforded by aversion respo
8. nses including the blink reflex WARNING Looking directly into the beam with optical aids e g binoculars telescopes can be hazardous UT 391 OPERATING MANUAL 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 UT 391 OPERATING MANUAL IV Meter Structure Keypad 1 ON MEAS On measuring button 2 Area volume button 3 Indirect measurement button 4 Continuous measurement button 5 Plus button 6 Minus button 7 Storage button 8 Reference level button 9 Illuminating button 10 Clear off button UT 391 OPERATING MANUAL LCD Display LES 1 Laser active 2 Reference level front 3 Reference level rear 4 Reference level End piece 5 Continuous measurement 6 Instrument error warning Cer RR sla A 7 8 9 10 11 Variable measuring functions d igi Length measurement punu mec Area measurement j j 3 Volume measurement 10 UT 391 OPERATING MANUAL A Indirect 2 times measurement 4 Indirect 3 times measurement 12 Battery status 13 Historical memory call up values 14 First value display line minimum value 15 Second value display line maximum value 16 Third value display line 17 Summary line for last measure or calculation result 11 UT 391 O
9. rties room temperature up to 60 m In unfavorable conditions such as intense sunshine poorly reflecting target surface black surface or high temperature variations the deviation over distances above 10m may increase more 27 UT 391 OPERATING MANUAL VII Maintenance Warning during replacing battery or measuring keep the sensitive mirror from scratch or dirt to avoid damaging the mirror or influencing the measuring precision and do not charge the replaced battery to avoid explosion and safety accident Battery installation and replacement When the symbol flashes permanently in the display replace the battery immediately Use alkaline batteries only Remove the batteries before any long period of non use to avoid the danger of corrosion 28 UT 391 OPERATING MANUAL As following steps Turn of the screw remove battery compartment lid Insert batteries in the two space respectively observing correct polarity Close the battery compartment again and fix the screw for reliability UT 391 OPERATING MANUAL General maintenance When the surface of meter is dirty clean with wet cloth and neutral detergent grinding miller and solvent are forbidden When the meter is damaged and needs to be repaired please send it to the designated maintenance center of our company for repair by professional service man do not repair it without authorization Especially in the process of using keep the sen
10. sitive mirror of meter away from scratch or dirt to avoid damaging the mirror or influencing the measuring precision Remove the battery if it won t be used for a long time Troubleshooting Causes and Corrective Measures 30 UT 391 OPERATING MANUAL All message codes are displayed with either or Error The following errors can be corrected 204 Calculation error Refer to user menu repeat the procedures 208 Temperature too high Cool down instrument make it working in stable The measuring tool is temperature environment outside the operating temperature range from 0 C to 40 C 31 UT 391 OPERATING MANUAL 253 Temperature too high Warm up instrument 255 Receiver signal too weak Use target plate or change a good refection measurement time too long 256 Received signal too strong Target too reflective use target plate or do not aim at strong light objective Error Hardware error and Switch on off the device several times If the uncertainty error symbol still appears try to replace the battery Otherwise your instrument is defective Please call your dealer for assistance 32 UT 391 OPERATING MANUAL The Instruction is subject to change without further notice UNI TREND ELECTRONICS SHANGHAI LIMITED Rm 15 11 F China Merchants Tower No 161 Lujia Zui Dong Road Pu Dong New District Shanghai City China Postal Code 200 120 Tel 86 21 5878 3888 Fax
11. zontal as possible Aim at the lower point 2 press this button lt amp the second distance is measured and adopted Meanwhile the height of 1 and 2 are displayed in the summary line using 3 measurements Press this button twice the display shows the symbol 4 Aim at the upper point 1 and press the button amp to trigger the measurement After the first measurement the value is adopted Keep the instrument as horizontal as possible 20 UT 391 OPERATING MANUAL Aim at the upper point 2 and press the button gt The value is measured and adopted Aim at the lower point 3 and press the button amp to trigger the measurement Meanwhile the height of 1 and 3 will be shown in summary line Press the button the meter will return to single measurement status Historical storage Continue press amp the next value of previous 20 records measurements or calculated results are shown in the reverse order 21 UT 391 OPERATING MANUAL Press to retrieve the next value of 20 records Press then retrieve the previous value of 20 records 22 UT 391 OPERATING MANUAL VI Technical specifications General Characteristics Measurement Distance 0 1m 60m 4 in 197 ft Measurement Speed 3 times s Battery Type AAA 2 x 1 5V Battery Life up to 3 000 measurements Battery indicator Three states full medium low Dimension 116 x 49 x 28 mm
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