BK PRECISION 2831D Instruction 电路图.pdf

Instruction Manual Model 2831D4 Digit True RMS Digital Multimeter RadioFans.CN 收音机爱 好者资料库 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 - (14) 2 RadioFans.CN 收音机爱 好者资料库 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 C35 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 0.05 % Overload protection on all range AC/DC Voltage measurement(Up to DC 1200V, AC 750V) AC/DC Current measurement(Up to 20A) Resistance measurement(Up to 20M ) Frequency Measurement(Up to 200KHz) Audible continuity test 3 RadioFans.CN 收音机爱 好者资料库 321 1197845610121413a ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? dc b e FIG.1 FRONT PANEL ? Input Terminal COM : COMMON Terminal V / /Hz : VOLT/ OHM/CONTINUITY/ FREQUENCY/ DIODE TEST Input Terminal mA : mil Ampere Input Terminal A : Ampere Input Terminal ? Function Selection I/O Power ON/OFF AC A AC Current DC V DC Voltage Resistance AC V AC Voltage DIODE Diode 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 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 Limited One-Year Warranty B&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&K Precision 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&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&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. 15 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. 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&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&K Precision Corp. B&K Precision Corp. 22820 Savi Ranch Parkway Yorba Linda, CA 92887 Phone: 714- 921-9095 Facsimile: 714-921-6422 Include with the instrument your complete return shipping address, contact name, phone number and description of problem. 16 17 22820 Savi Ranch Parkway Yorba Linda, CA 92887 USA TEL: 714-921-9095 FAX: 714-921-6422 PN: 481-532-9-001 Printed in Korea 2004 B&K Precision Corp.