12 Multimeter
Contents
1. de detto dois 23 eere er ERR RO ete dete 23 Replacing the 23 Replacing the Test Leads eterne 23 Service and Parts ree Sd e ee inde hein dep itte gated 24 DYoecl pm 24 SPECIFICATIONS 24 READ FIRST SAFETY INFORMATION This meter has been designed and tested in accordance with IEC Publication 1010 To ensure that the meter is used safely follow all safety and operating instructions in this manual If the meter is not used as described in this manual the safety features of the meter might be impaired Warning To avoid false readings which could lead to possible electric shock or personal injury replace the battery as soon as the battery indicator appears e Do not use the meter if the meter or test leads look damaged or if you suspect that the meter is not operating properly e off power to the circuit under test before cutting unsoldering or breaking the circuit Small amounts of current can be dangerous e Do not apply more than 600 V rms between a terminal and earth ground e Use caution when working above 60 V dc or 30 V ac rms Such voltages pose a shock hazard e When using the probes keep your fingers behind the finger guards on the probes e Disconnect the live test lead before disconn2. TURNING BEEPER OFF To disable all beeper functions press and hold down for 2 seconds while turning the meter on MAINTENANCE 4NWarning To avoid electrical shock or damage to the meter do not get water inside the case Remove the test leads and any input signals before opening the case Periodically wipe the case with a damp cloth and detergent Do not use abrasives or solvents Replacing the Battery The meter uses a 9 V battery NEDA 1604 or IEC 6F22 To replace the battery remove the four screws from the back of the meter and lift off the front Remove the battery from case bottom Replacing the Test Leads The meter uses double insulated test leads When replacing the test leads order Fluke PN 855742 only 23 12 Multimeter Users Manual Service and Parts This meter should be serviced only by a qualified service technician To order the service manual PN 900824 and other parts or for service information in the USA call 1 800 825 9810 Outside the USA contact the nearest Fluke service center Accessories When using accessories put the slide switch in the volts position and manually select the 4000 mV range for ease of reading SPECIFICATIONS This meter complies with Part 15 of FCC Rules Operation is subject to the following conditions 1 This meter may not cause harmful interference and 2 this meter must accept any interference received including interference that may cause undesired operation A
3. changes to the voltage measurement function See CHEK AND HOW TO USE IT 12 Multimeter Users Manual RESISTANCE CONTINUITY TEST 12 rrr eso x T Figure 4 Continuity and Resistance Measurements 10 12 Multimeter TESTING DIODES TESTING DIODES 1 2 Insert the test leads in the jacks Put the slide switch in the continuity ohms position The meter selects either the continuity diode m gt or ohms function If ohms is selected press to toggle to the continuity diode function To toggle the beeper on or off in continuity diode test press is displayed when the beeper is enabled Touch probes to the diode Figure 5A A forward voltage drop of about 0 6 V typical for a silicon diode causes the meter to beep once Reverse probes Figure 5B If the diode is good OL is displayed If the diode is shorted Figure 5C the beeper sounds continuously in at least one direction If the diode is open OL is displayed in both directions 11 12 Multimeter Users Manual FELLNE 12 0 Figure 5 Testing Diodes 12 12 Multimeter VCHEK AND HOW TO USE IT VCHEK AND HOW TO USE IT amp cHEK is a subset of the continuity ohms function In amp cHEk the meter is designed to automatically display an ac or dc
4. position The meter selects the continuity diode or ohms function Press Z to toggle between the continuity diode and ohms functions 2 Press to put the meter in manual range 9 is displayed The meter is locked in the selected function and is disabled In continuity diode test press to toggle the beeper on and off In ohms press 9 to manually select a range To remove the function lock and reenable amp cuek press for 2 seconds press or move the slide switch 14 12 Multimeter MEASURING CAPACITANCE MEASURING CAPACITANCE First turn off power to the circuit and disconnect and discharge the capacitor 1 Insert test leads and move the slide switch to See Figure 6 2 Press 46 The capacitance function is selected and pF is displayed 3 Touch the probes to the capacitor When measuring polarized capacitors be sure to connect the positive to and the negative to COM Capacitor dielectric absorption can cause measurement errors If more discharge is necessary the meter displays dlSC while the capacitor is discharging To exit capacitance press At or or move the slide switch to another position 15 12 Multimeter Users Manual Figure 6 Measuring Capacitance 16 12 Multimeter USING MIN MAX FUNCTIONS USING MIN MAX FUNCTIONS Recording Minimum and Maximum Readings MIN MAX records the highest and lowest measurements taken MIN MAX cannot be used when
5. the meter is measuring capacitance In the MIN MAX mode autoranging Standby and amp cHek are disabled 1 Insert the test leads and put the meter in volts or ohms 2 Connect the leads to the circuit 3 Press M to enter MIN MAX M is displayed and autorange is disabled When the reading changes more than about 50 digits the meter beeps a short Input Change Alert When a new minimum or maximum is recorded the meter beeps a longer MIN MAX Alert 4 Press M to cycle through maximum minimum and present readings see Figure 7 To exit MIN MAX and erase the stored readings press M for 2 seconds or change the measurement function 17 12 Multimeter Users Manual ENTER PRESENT READING MAXIMUM READING MIN MAX WITH INPUT CHANGE ALERT Figure 7 Displaying Minimum and Maximum Reading 18 12 Multimeter USING MIN MAX FUNCTIONS Recording Minimum and Maximum Reading with Elapsed Time The MIN MAX with elapsed time mode records the time in hours and minutes between when MIN MAX was entered and the last high and low was recorded Time is kept to 99 59 OL is displayed for longer times 1 oa RON To enable the MIN MAX elapsed time clock hold M down while moving the slide switch from OFF to the volts or continuity ohms position Insert the test leads and put the meter in volts or ohms Connect the leads to the circuit Press M to select MIN MAX M is displayed and time is set to 00 00 Press M to s
6. toggle the meter between a high or low input impedance mode by moving the slide switch between the voltage and continuity ohms positions See AND HOW TO USE IT In the continuity ohms position the input impedance of the meter is 2 kO and LoZ is displayed to indicate that the meter is in the low input impedance mode In the volts position the input impedance is 5 MQ in ac 10 in dc 12 Multimeter Users Manual VOLTS DC VOLTS AC NER ZO V Figure 3 Measuring Voltage 12 Multimeter TESTING CONTINUITY AND MEASURING RESISTANCE TESTING CONTINUITY AND MEASURING RESISTANCE 1 Insert the test leads in the jacks and turn off power to the circuit under test External voltage across the components causes invalid readings 2 Putthe slide switch in the continuity ohms position Figure 4 To toggle between the continuity diode and ohms functions press e 3 Touch the probes to the test points In ohms read the resistance on the display In continuity test the beeper sounds continuously if continuity exists resistance lt 25 Opens and shorts longer than 250 us are detected On the Fluke 12 short to open and open to short transitions can be captured and visually displayed See Capturing Continuity Intermittents If the meter detects a voltage greater in magnitude than about 4 5 V and the meter is not in the manual range mode the meter automatically
7. voltage when the meter detects a voltage greater in magnitude than about 4 5 V and the meter is not in the manual range mode THIS WILL NOT HARM THE METER is always enabled and is displayed when the meter is in the continuity ohms function unless the meter is in one of the following manual range mode i e is displayed MIN MAX mode i e M is displayed The capacitance function i e UF is displayed 4NWarning Repetitive transients dc bus will cause to select ac volts even though a hazardous dc voltage may be present To avoid a misleading display and possible electric shock manually select the proper volts function for measurements on these circuits In amp cHEk the meter has a low input impedance 2 When a voltage is displayed LoZ is also displayed to remind you of this and the beeper momentarily sounds a Alert To disable the amp cuek Alert the ohms function press and hold down while turning the meter on 13 12 Multimeter Users Manual Use only on power supplies and other power sources that have a low output impedance Do not use to measure voltage in electronic circuitry unless a 2 load will not damage the circuit See T on page 27 DISABLING WITH FUNCTION LOCK To lock the meter in either the continuity diode or ohms function and disable amp cnek 1 Putthe slide switch in the continuity ohms
8. 01 V 1 9 3 40 00 V 0 01 V 1 9 3 400 0 V 0 1V 1 9 3 600 V V 1 9 3 V 4000 0 9 2 4 000 V 0 001 V 0 9 2 40 00 V 0 01 V 0 9 1 400 0 V 0 1V 0 9 1 600 V V 0 9 1 40000 0 10 0 9 2 4 000 0 001 0 9 40 00 0 01 0 9 1 400 0 0 1 KQ 0 9 1 4 000 0 001 MQ 0 9 1 40 00 0 01 MQ 1 5 3 at 1 000 uF 0 001 pF 1 9 2 10 00 0 01 pF 1 9 2 100 0 pF 0 1 uF 1 9 2 10000 pF 1 0 pF lt 1000 pF 1 9 2 gt 1000 pF 10 90 Typical 2 000 V 0 001 V 0 9 2 T The 4000 mV range can only be entered in manual range mode Use the 4000 mV range with accessories T The beeper is guaranteed to come on at 25 Q and turn off at gt 250 The meter detects opens or shorts of 250 us or longer 26 12 Multimeter SPECIFICATIONS Function Overload Input Common Mode Normal Mode Protection Impedance Rejection Ratio Rejection Nominal 1 Unbalance V 600 V dc gt 10 MQ lt 100 pF gt 100 dB at dc gt 50 dB at 1 amp LoZ 50 Hz or 60 Hz 50 Hz or 60 Hz gt 2 kQ lt 200 pF V 600 V rms gt 5 MQ lt 100 pF gt 60 dB at dc 1 amp LoZ 50 Hz or 60 Hz gt 2 kQ lt 200 pF Q Open Circuit Full Scale Voltage Short Circuit Test Voltage To 4 0 MQ 40 MQ Current 600 V rms lt 1 5 V dc lt 450 mV dc lt 1 5 V dc lt 500 pA gt 600 V rms 2 4 3 0 V de 2 400 V de 0 9
9. 5 mA Typical 3 x 10 V Hz Maximum T 2 with input voltage up to 50 V Impedance will increase with input voltage to gt 300 at 600 V MIN MAX Recording Accuracy and Response Time Specified accuracy of measurement function 12 digits for changes gt 200 ms in duration 40 digits in ac Typical 100 ms response to 80 96 MIN MAX Recording with Elapsed Time Elapsed Time Resolution Accuracy 0 to 100 hours 99 59 1 minute 0 3 Typical Continuity Capture Detects opens or shorts of 250 us or longer 27 12 Multimeter Users Manual 28
10. FLLIKE 12 Multimeter PN 2063508 January 2003 Rev 1 9 04 2003 2004 Fluke Corporation All rights reserved Printed in China All product names are trademarks of their respective companies Table of Contents Title Page READ FIRST SAFETY INFORMATION esee eene 1 SYMBOES ete Nette e RE es ER ele ie NE eter epe 2 DISPLAY 3 OPERATING FEATURES aaa e ee Erde ee eere 4 STANDBY MODE u ayasa n s ep e eite pe 5 INPUT RANGES on o eei alas ikat eon Um eec Ripe dee 5 Autorandllg c zeiten ere tpe e ERR REM Re REC 6 Manually Selecting a 6 MEASURING 2 7 TESTING CONTINUITY AND MEASURING RESISTANCE 9 peter deepest Trid 11 VCHEK AND HOW 13 DISABLING WITH 14 MEASURING 15 USING MIN MAX 17 Recording Minimum and Maximum 17 12 Multimeter Users Manual Recording Minimum and Maximum Reading with Elapsed Time 19 Capturing Continuity Intermittents with Continuity Capture 21 TURNING BEEPER OFF
11. ccuracy is specified for a period of one year after calibration at 18 C to 28 C 64 F to 82 F with relative humidity to 90 AC conversions are ac coupled average responding and calibrated to the rms value of a sine wave input Accuracy Specifications are given as of reading number of least significant digits 24 Maximum Voltage Between Terminal and Earth Ground Display Operating Temperature Storage Temperature Temperature Coefficient Relative Humidity Battery Type Battery Life Shock Vibration Size HxWxL Weight Safety EMI Regulations 12 Multimeter SPECIFICATIONS 600 V rms 3 3 4 digits 4000 counts updates 4 sec 10 C to 50 C 30 C to 60 C indefinitely to 40 C for 100 hrs 0 1 x specified accuracy C lt 18 C or gt 28 C 0 96 to 90 10 C to 35 C 0 to 70 35 C to 50 C 9 V NEDA 1604 or IEC 6F22 650 continuous hours with alkaline 450 continuous hours with carbon zinc 1 meter shock Per MIL T 28800D for a Class 3 Instrument 1 35 in x 2 75 in x 5 55 in 3 46 cm x 7 05 cm x 14 23 cm 10 oz 286 g Designed to Protection Class II requirement of UL 3111 ANSI ISA S82 CSA C22 2 No 231 and VDE 0411 and IEC 1010 overvoltage category Ill Complies with FCC Part 15 Class and VDE 0871 25 12 Multimeter Users Manual Function Range Resolution Accuracy 50 to 400 Hz V 4000 1 9 3 4 000 V 0 0
12. ecting the common test lead 12 Multimeter Users Manual SYMBOLS The following international electrical symbols are used in this manual A Important Safety Information in Manual Not Applicable to Identified Model AC DC Diode Capacitor Ground Getty 1 28 Double Insulation 12 Multimeter DISPLAY DISPLAY HEPLACE BATTERY DIGITAL READING a mV 5 MEASUREMENT MANUAL RANGE 0 00 8 al UNITS DISABLED max MIN l gt Loz uF P CHEK ENABLED LOW 2kQ INPUT IMPEDANCE MIN MAX RECORDING ENABLED MAXIMUM DIODE TEST IN MIN NG MINIMUM READING CONTINUITY MODE IN MIN MAX MODE BEEPER ENABLED Note Before using peel off plastic lens protector starting at any corner ep Figure 1 Display 12 Multimeter Users Manual OPERATING FEATURES TOGGLE BETWEEN 4 VOLTS DC AND OR MIN MAX OPERATIONS CONTINUITY AND OHMS P PAGES 20 25 RANGING OPERATIONS A PAGES 18 19 PAGES 8 9 3 POSITION SLIDE SWITCH VOLTS DC AC CONTINUITY DIODE TEST POSITION OHMS V CHEK AND CAPACITANCE COMMON RETURN JACK INPUT JACK Figure 2 Operating Features 12 Multimeter STANDBY MODE STANDBY MODE In standby mode the display goes blank to preserve battery life The meter beeps and enters Standby if it is ON but inactive for more than 45 minutes Press a
13. ny pushbutton to resume operation Standby is not allowed if the meter is in the MIN MAX mode INPUT RANGES The input range determines the highest value the meter will measure Most functions have more than one range see SPECIFICATIONS If the range is too low the display shows OL overload If the range is too high the display will show fewer digits of resolution 12 Multimeter Users Manual Autoranging The meter defaults to autorange when you turn it on In autorange the meter selects the range automatically Manually Selecting a Range The meter also has a manual range mode In manual range you select and lock the meter in a range To manually select a range 1 Press The meter is locked in the range it is in and is displayed In manual range is disabled Press to step through the ranges NOTE The 4000 mV range which can only be entered in manual range is convenient when using accessories To return to autorange press for 2 seconds until is no longer displayed change the measurement function 12 Multimeter MEASURING VOLTAGE MEASURING VOLTAGE 1 Insert the test leads in the jacks 2 To select a voltage function put the slide switch in the middle position See Figure 3 To toggle between dc and ac press Z 3 Touch the probes to the test points and read the display The meter beeps an Overload Alert when OL overload is displayed In manual range you can
14. tep through the display sequence shown in Figure 8 To exit press M for 2 seconds or change the measurement function 19 12 Multimeter Users Manual ENTER MIN MAX VIEW MAXIMUM READING MAXIMUM READING PRESENT READING ELAPSED TIME o 40 o 936 0725 8 B g 0123 a ges g gre ge sec MINIMUM READING MINIMUM READING EXIT MIN MAX ELAPSED TIME Figure 8 Maximum and Minimum Reading with Elapsed Time 20 12 Multimeter USING MIN MAX FUNCTIONS Capturing Continuity Intermittents with Continuity Capture When testing continuity the meter can capture intermittents as short as 250 us and display them as open to short and short to open transitions 1 2 3 Put the slide switch in the continuity ohms position Connect the leads to the circuit Press M The display shows the initial condition either an open or short as shown in Figure 9 and M is displayed If the meter detects a transition it beeps and the display captures the transition see Figure 9 Subsequent transitions cause the meter to beep but the display does not change Press M to reset the display to the present condition and resume capture mode To exit press M for 2 seconds or change measurement function 21 12 Multimeter Users Manual 22 SHORT TO OPEN OPEN TO SHORT TRANSITION TRANSITION Figure 9 Open to Short and Short to Open Transitions 12 Multimeter TURNING BEEPER OFF
Download Pdf Manuals
Related Search