Instruction Manual
Contents
1. 14 1 PRODUCT DESCRIPTION 1 1 Introduction Thank you for purchasing our product Electronic measuring instruments produced by us are high technology products made under strict quality control We guarantee their exceptional precision and utmost reliability For proper use of the product please read this operation manual carefully Note 1 To fully maintain the precision and reliability of the product use it within the range of standard setting Temperature 10 C 35 C Humidity 45 85 2 After turning of power please allow a pre heating period of as long as some 30 minutes before use 3 This equipment should be used with a triple line power cord for safety 4 For quality improvement the exterior design and specification of the product can be changed without prior notice 5 If you have further questions concerning use please contact our service center or sales outlet This Digital multimeter is a portable bench type Digital multimeter with a 4 1 2 digit light emitting diode This Digital multimeter can make diode measurements Frequency measurements amp continuity test in addition to Current Voltage and Resistance measurements B Features e Bench type True RMS Digital Multimeter with 4 1 2 digit LED display e Basic accuracy for DCV 0 05 e Overload protection on all range e AC DC Voltage measurement Up to DC 1200V AC 750V e AC DC Current measurement Up to 20A e Resistance2. Clearly state in writing the performance problem and return any leads connectors and accessories that you are using with the device Customers not on open account must include payment in the form of a money order or credit card For the most current repair charges contact the factory before shipping the product Return all merchandise to B amp K Precision Corp with pre paid shipping The flat rate repair charge includes return shipping to locations in North America For overnight shipments and non North America shipping fees contact B amp K Precision Corp B amp K Precision Corp 22820 Savi Ranch Parkway Yorba Linda CA 92887 Phone 714 921 9095 Facsimile 714 921 6422 www bkprecision com Include with the instrument your complete return shipping address contact name phone number and description of problem 16 BK PRECISION 22820 Savi Ranch Parkway Yorba Linda CA 92887 USA PN 481 532 9 001 TEL 714 921 9095 Printed in Korea FAX 714 921 6422 2004 B amp K Precision Corp www bkprecision com
3. EXPLANATION IN MANUAL ACALTERNATING CURRENT GROUND ccpirecrcurrent ES ruse 2 INSTALLATION 2 1 Initial Inspection This instrument was carefully inspected both mechanically and electrically before shipment It should be physically free of damage To confirm this the instrument should be inspected for physical damage which may have occurred in transit Also verify that all supplied accessories have been included 2 2 Connecting AC Power This instrument requires 115V AC or 230V AC 50 60 Hz power socket with protective earth contact PE contact If it is available only a power socket without PE contact so a 2 conductor ac power then a power socket with PE contact must be installed before or the appliance should be provided with a PE screw terminal which is not soluble by hand and not soluble before 2 conductor power lines CAUTION AC POWER OF THIS INSTRUMENT IS PRESET TO 115V IN FACTORY BEFORE POWERING ON THIS INSTRUMENT CHECK AND MAKE SURE THE VOLTAGE OF THE POWER SOURCE IS SAME WITH THE MARKING OF UNIT IN CASE OF AC230V VOLTAGE SELECTOR on rear panel SHOULD BE SELECTED TO 230V POSITION 2 3 Cooling and Ventilation No special cooling and ventilation is required However the instrument should be operated where the ambient temperature is maintained 2 4 Position This instrument is built as a bench type instrument with rubber feet and tilt stand in place The stand up angle can b
4. measurement Up to 20M Q e Frequency Measurement Up to 200KHz e Audible continuity test Z NE NN 46 ce Rot 0 R Re m AR EN oy 1 2 8 4 55 6 D 8 9 11121534 a FIG 1 FRONT PANEL B input Terminal b COM COMMON Terminal V 9 Hz VOLT OHM CONTINUITY FREQUENCY DIODE TEST Input Terminal mA mil Ampere 9 A Ampere B Function Selection Input Terminal Input Terminal O UO Power ON OFF ACA AC Current DCV DC Voltage Q Resistance ACV AC Voltage D DIODE Diode amp Continuity DCA DC Current FRQ Frequency B Range Selection 92 2V 2mA 2 KO 17 20M 20MQ 020 20V 20mA 20 KO 20 KHz 20A 20A 5200 200V 200mA 200KQ 200KHz HOLD Data Hold 22000 DC 1200V AC1000V 2000mA 2000 KO B Input Terminal Limits Input Switch da Min Display Max Display Maximum Function L Readin Readin Input Red Black pris i 1 COM 0001 A 19 999A 20 00 A A COM 0001 A 19 999A 20 00 A VOHz COM 0 001KHz 199 99KHz 600 V 1 Min D PURRA A a Rot d 6 WOE P Her tG OS A ERA TDI HP tice O P Rra SONGS UR Soman 9 l TEA A OE o PRO re 84 tene p RA Gree 4c Od dh HY erat RO HR LAD VOLTAGE FUSE POWER MAX 115V osAF 10W vic THER dv AR Sere Made in Korea fin FIG 2 REAR PANEL D AC INLET AC power input connector VOLTAGE SELECTOR Selects the AC
5. 0V 50Hz to 60Hz 1 0 10d 60Hz to 1KHz 2 0 10d 1KHz to 2KHz 3 0 10d 20A Range for 15 seconds max during each 15 minute period RESISTANCE Over Load Protection un Q 0 T Q EO RON 600V DC or Peak 100 Q 20 M2 1 10d FREQUENCY Over Load Protection 20KHz 1Hz 1 5 20 KHz 1 Hz 5 5d 600V DC or Peak 200 KHz 2 0 5d Frequencies under 500Hz requires a minimum amplitude of at least 4Vpp other sensitivities are not specified The digit error less than 5digits is added in measuring value AUDIBLE CONTINUITY Test Volt Threshold Over Load Protection 3V Less Than 200 ohm 600V DC or Peak DIODE TEST Test Volt Max Test Current Over Load Protection Approx 1 0 mA 600V DC or Peak m DIMENSION AND WEIGHT e Dimensions HWD 9 4 x 3 5 x 10 6 240 x 90 x 270mm e Weight Aprox 4 6lb 2 1 kg 1 3 Equipment Ratings e Plug and Socket 3wire ac power plug and 3 wire outlet e Power amp Fuse Ratings Input Voltage Fuse Power Max 103 126V AC 50 60Hz F 0 5A 250V 206 252V AC 50 60Hz F 0 2A 250V e Operating Environment 10 W Temperature 0 C to 40 C Accuracy Specified at 23 C 5 C Temperature Coefficient 0 1x Specified Accuracy per C HUMIDITY up to 85 RH Relative Humidity to 40 C without temperature extremes causing condensation within the instrument Storage Environment TEMP
6. Bx CISION Instruction Manual Model 2831D 4 Digit True RMS Digital Multimeter CONTENTS 1 PRODUCT DESCRIPTION 1 1 Introduction ___________ 3 1 2 Technical Specifications 6 1 3 Equipment Ratings 8 1 4 Supplied Accessories 9 1 5 International electrical Symbol 9 2 INSTALLATION 2 1 Initial Inspection __________ 10 2 2 Connecting AC Power 10 2 3 Cooling and Ventilation 10 2 4 Position 10 2 5 Warming Up __ ________ ____ 10 3 OPERATION 3 1 Voltage Measurement 11 3 2 Current Measurement 11 3 3 Resistance Measurement 12 3 4 Diode Measurement 13 3 5 Continuity Test 13 3 6 Frequency Measurement 13 4 MAINTENANCE 4 1 Fuse Replacement 14 4 2 Adjustment and Calibration 14 4 3 Cleaning and decontamination
7. ERATURE 20 C to 70 C HUMIDITY below 85 RH Insulation Category Il Portable equipment of local level Pollution Degree 2 Protection to IEC 529 Ordinary Note Specifications and information are subject to change without notice Please visit www bkprecision com for the most current product information 1 4 Supplied Accessories User s Manual 1 Test Leads 1 Power cord 1 Spare Fuse 1 1 5 International electrical symbol SAFETY RULES e Remember THINK SAFETY AND ACT SAFELY e Read these operating instructions thoroughly and completely before operating this meter e Pay particular attention to WARNINGS used for conditions and actions that pose hazard to the user and CAUTIONS used for conditions and actions that may damage the meter Always to inspect this meter test probes and accessories for any sign of damage or abnormality before every use Never ground yourself and keep your body isolated from ground Never touch exposed wiring connections or any live circuit conductors Disconnect the live test probe before disconnecting the common test probe Use caution when working above 60V DC or 25V AC rms Such voltages pose a shock hazard SAFETY SYMBOLS DANGEROUS VOLTAGE SEE
8. Power 115V or 230V 3 FUSE HOLDER Replace fuse by unscrewing GROUND TERMINAL 1 2 Technical Specification Important Note All accuracies apply to 5 to 95 full scale of each range DC VOLT 0 05 5d 0 1 5d 0 3 5d AC VOLT Range Resolution Frequency Accuracy Impedance 2V 100 uV 40Hz to 60Hz 0 75 10d 60Hz to 1KHz 1 5 10d 1KHz to 5KHz 2 5 10d 10 MO 5KHz to 10KHz 5 0 10d 20V 1 mV 40Hz to 60Hz 0 75 10d 60Hz to 1KHz 2 5 10d 1KHz to 5KHz 5 0 10d 5KHz to 10KHz 10 10d 200V 10 mV 40Hz to 50Hz 1 0 10d 50Hz to 60Hz 0 75 10d 60Hz to 1KHz 2 5 10d 1KHz to 5KHz 5 10d 750V 100 mV 40Hz to 50Hz 1 0 10d 50Hz to 60Hz 0 75 10d 60Hz to 400Hz 2 5 10d 400Hz to 1KHz 5 10d DC CURRENT Over Load Protection 2mA 100 nA 20 mA 1uA 0 75 5d 2A 250V 200 mA 10 uA a 100 uA 1 0 5d 1 0 10d 15A 250V 20A Range for 15 seconds max during each 15 minute period AC CURRENT Over Load Range Resolution Frequency Accuracy Protection 2mA 100 nA 40Hz to 50Hz 1 5 10d 2A 250V 20mA 1 uA 50Hz to 60Hz 0 75 10d 200mA 10 uA 60Hz to 1KHz 2 0 10d 1KHz to 5KHz 3 0 10d 2000mA 100 uA 40Hz to 50Hz 1 5 10d 50Hz to 60Hz 1 0 10d 60Hz to 1KHz 2 0 10d 1KHz to 5KHz 3 0 10d 20A 1mA 40Hz to 50Hz 1 5 10d 15A 25
9. WARNING VOLTAGES WITHIN THIS INSTRUMENT ARE SUFFICIENTLY HIGH TO ENDANGER LIFE COVERS MUST NOT BE REMOVED EXCEPT BY PERSONS QUALIFIED AND AUTHORIZED TO DO SO AND THESE PERSONS SHOULD ALWAYS TAKE EXTREME CARE ONCE THE COVERS HAVE BEEN REMOVED 4 1 Fuse Replacement Disconnect and remove all connections from any live power source Unscrew fuse holder by screw driver Locate the defective fuse and remove it by gently pulling out Install a new fuse of the SAME SIZE AND RATING Screwing fuse holder CAUTION MAKE SURE THAT THE RATED AND SPECIFIED FUSES ARE USED FOR REPLACEMENT 4 2 Adjustment And Calibration It is recommendable to regularly adjust and calibrate this instrument Qualified and authorized personnel only should execute performance and procedures 4 3 Cleaning and decontamination The instrument can be cleaned with a soft clean cloth to remove any oil grease or grime Never use liquid solvents or detergents If the instrument gets wet for any reason dry the instrument using low pressure clean air at less than 25 PSI Use care and caution around the window cover areas where water or air could enter into the instrument while drying 14 BK CISION Limited One Year Warranty B amp K Precision Corp warrants to the original purchaser that its product and the component parts thereof will be free from defects in workmanship and materials for a period of one year from the data of purchase B amp K Precisi
10. e adjusted by changing the angle of the carrying handle 2 5 Warming Up Allow at least 30 minutes for the unit to warm up so that it can stabilize 10 3 OPERATION 3 1 Voltage Measurement Voltage is the difference of electrical energy potential between two points Measuring voltage allows you to verify the following questions Is voltage present The presence of voltage tells you that the circuit is delivering voltage to the component you are testing What is the level of voltage The voltage level tells you that whether the proper voltage is arriving at the components What is the voltage drop The voltage drop tells you how much of voltage is being consumed by the components WARNING HIGH VOLTAGE TO AVOID POSSIBLE ELECTRIC SHOCK AND OR EQUIPMENT DAMAGE DO NOT ATTEMPT TO TAKE ANY VOLTAGE MEASUREMENTS IF THE VOLTAGE IS ABOVE 1200V DC OR 1000V AC THE COM TERMINAL POTENTIAL SHOULD NOT EXCEED 500V TO THE GROUND 1 Plug the red and the black test leads into the VO and the COM input terminals respectively 2 Verify dc or ac Select the function dc V or ac V and set the range switch to the desired volt range For unknown voltage always start from highest range and move down to lower range to select scale for best reading 3 Connect the probe tips in parallel with the voltage source to be measured 4 Read voltage value on the Display 3 2 Current Measurement Current is the flow quantity of electrons
11. nt Resistance is an obstacle that is hindering the current flowing through a conductor Ohm is the unit of this resistance The resistance displayed in meter is the total resistance through all possible paths between red and black probes Resistance must always be measured with meter in series with the circuit Resistance in test lead is about 0 1 0 2 ohm e Be sure that the contact between the probes and the circuit is clean Contact resistance coming from dirt oil paint etc can affect accuracy seriously CAUTION ALL RESISTANCE MEASUREMENTS SHOULD BE TAKEN ON DE ENERGIZED CIRCUITS ONLY COMPLETELY DE ENERGIZE THE CIRCUIT OR DEVICE WHICH IS TO BE MEASURED POWER TO THE CIRCUIT UNDER TEST MUST BE OFF AND ANY CAPACITORS SHOULD BE DISCHARGED IF AN EXTERNAL VOLTAGE IS PRESENT ACROSS A COMPONENT IT WILL CAUSE ERRONEOUS RESISTANCE READING 12 1 Plug the red and black test leads into the VO input and the COM input terminals respectively 2 Select the function OHM and set the range switch to the desired resistance range 3 Connect the probe tips in parallel with the resistance to be measured 4 Read resistance value on the Display 3 4 Diode Measurement A good diode allows current in one direction To test a single diode turn the power off and remove the diode from circuit 1 Connect the red probe to the plus side of diode and the black probe to the minus side 2 If diode is good the voltage drop
12. on Corp will without charge repair or replace at its option defective product or component parts Returned product must be accompanied by proof of the purchase date in the form a sales receipt To obtain warranty coverage in the U S A this product must be registered by completing and mailing the enclosed warranty card to B amp K Precision Corp 22820 Savi Ranch Parkway Yorba Linda CA 92887 within fifteen 15 days from proof of purchase Exclusions This warranty does not apply in the event of misuse or abuse of the product or as a result of unauthorized alternations or repairs It is void if the serial number is alternated defaced or removed B amp K Precision Corp shall not be liable for any consequential damages including without limitation damages resulting from loss of use Some states do not allow limitation of incidental or consequential damages so the above limitation or exclusion may not apply to you This warranty gives you specific rights and you may have other rights which vary from state to state 19 BK CISION al Model Number Date Purchased Service Information Warranty Service Please return the product in the original packaging with proof of purchase to the below address Clearly state in writing the performance problem and return any leads connectors and accessories that you are using with the device Non Warranty Service Return the product in the original packaging to the below address
13. through a conductor Ampere is the amount of electrons flowing through a conductor CAUTION DO NOT ATTEMPT TO TAKE A CURRENT OF MORE THAN SPECIFIED ALWAYS START WITH THE HIGHEST RANGE FOR UNKNOWN CURRENT THE mA INPUT TERMINAL IS PROTECTED BY A 2000mA 250V F TYPE FUSE AND A INPUT TERMINAL IS FUSED WITH 15A 250V T TYPE 11 WARNING MAKE SURE OF NO POWER BEFORE DISCONNECTING CIRCUIT EVEN SMALL AMOUNT OF CURRENT CAN BE DANGEROUS DO NOT ATTEMPT A CURRENT MEASUREMENT WHERE VOLTAGE IS ABOVE 600 V IF THE FUSE BLOWS YOU MIGHT BE INJURED OR THE METER DAMAGED 1 Plug the red test leads into the mA input for less than 2000 mA dc or into A input terminal between 2000mA and 20A 2 Plug the black test leads into the COM input terminal 3 Verify dc or ac Select the function dc A or ac A and set the range switch to the desired volt range For unknown current always start from highest range and move down to lower range to select scale for best reading 4 Connect the probe tips in series with the current source to be measured 5 Read current value on the Display 6 Fuse Replacement e Disconnect and remove all connections from any live power source Open the top case Locate the defective fuse and remove it in input board Install a new fuse of the SAME SIZE AND RATING e Close the top case 20 A ac dc Measurement Max 15sec each 15minute 3 3 Resistance Measureme
14. will be displayed ex 300 0 800 0 3 Reveres the probes and measure the voltage across the diode again e If diode is good the display shows 000 0 and is flickering e If diode is shorted the display shows 000 0 with beep sound in both direction e If display shows 000 0 and is flickering in both directions the diode is open 3 5 Continuity test Continuity test verifies by beeper if the circuit is closed or open Meter detects opens and shorts 1 Set the push switch to continuity function amp diode range 2 Connect the probes to the circuit and listen for beeper Continuity tone confirms that the circuit is continued closed and connected 3 6 Frequency Measurement 1 Plug the red and black test leads into the VO input and the COM input terminals respectively 2 Select the function to FRQ and set the range switch to the desired frequency range For unknown frequency always start from highest range and move down to lower range to select scale for best reading 3 Connect the probe tips in parallel with the circuit to be measured 4 Read frequency value on the Display NOTE The digit error less than 5digits is added in measuring value To compensate this error check the digit error by shorting test leads before measuring unknown frequency and deduct this value from measuring value 13 4 MAINTENANCE CAUTION IT IS ESSENTIAL FOR SAFETY TO PROPERLY MAINTAIN AND SERVICE THIS INSTRUMENT
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