Instruction Manual Model 2405A Mini-Pro Digital Multimeter 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. Retumed 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., 1031 Segovia Circle, Placentia, CA 92870 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 fiable for any consequential damages, including without {imitation 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. SAFETY INFORMATION The following safety information must be observed to insure maximum personal safety during the operation of this meter: Always inspect your meter, test leads and accessories for any sign of damage or abnormality before every use. If any abnormal conditions exist (eg-broken test leads, cracked cases, display not reading, etc.), do not attempt to take any measurements. Do not expose the instrument to direct sun light, extreme tempera- ture or moisture. Never ground yourself when taking electrical measurements. Do not touch exposed metal pipes, outlets, fixtures, etc., which might be at ground Potential. Keep your body isolated from ground by using dry clothing, rubber shoes, rubber mats, or any approved insulating material. To avoid electric shock use CAUTION when working with voltages above 40Vdc or 20Vac. Never exceed the maximum allowable input value of any function when taking a measurement. Refer to the specifica- tions for maximum inputs. Never touch exposed wiring, connections or any live circuit when attempting to take measurements. When Using the probes, keep your fingers behind the finger guards on the probes. Measuring voltage which exceeds the limits of the mul- timeter may damage the meter and expose the opera- tor to a shock hazard. Always recognize the meter voltage limits as stated on the front of the meter.SPECIFICATIONS Display: 34 digit liquid crystal display (LCD) with a maximum reading of 1999. Polarity: Automatic, positive implied, negative po- larity indication. Overrange: (1) or (-1) is displayed. Zero: Automatic. Low battery indication: The &2? is displayed when the battery voltage drops below the operating level. Measurement rate: 2.5 times per second. Operating environment: 0C to 50C at < 70% relative humidity. Storage temperature: -20C to 60C, 0 to 80% R. H. with battery removed from meter. Temperature coefficient: 0.1 x (specified accuracy) / per C (OC to 18C, 28C to 50C). Altitude: 6561.7 Feet (2000M). Power: Single standard 9-volt battery, NEDA 1604, JIS 0O6P, IEC 6F22. Battery life: 300 hours typical with carbon-zinc. Dimensions (H)x(W)x(D): 143mm 68mm~* 47mm (5.63*2.68x 1.85 inches). Weight: Approx. 206g(7.270z) including battery. Accessories: One pair test leads, 9V battery (installed) and Operating Instructions. DC VOLTS Ranges: 2V, 20V, 200V, 600V Resolution: ImV Accuracy: +(2.0% rdg + t dgt) Input impedance: 1OMQ Overload protection: 600VDC or AC rms ACVOLTS (S0Hz - 500Hz) Ranges: 200V, 600V Resolution: 100mV Accuracy: +(2.5% rdg + 4 dgts) Input impedance: 4.5MQ Overload protection: 600VDC or AC rms DCCURRENT Ranges: 200nA, 2mA, 20mA, 200mA, [0A Resolution: 0.1pA Accuracy: (2.5% rdg + 2 dgts) on 200uA to 200mA ranges +(3.5% rdg + 4 dgts) on 10A range Input protection: 0.5A/250V fast blow fuse 10A/600V fast blow ceramic fuse RESISTANCE Ranges: 2002, 2kQ, 20kQ, 200kQ, 20MQ Resolution: 100mQ Accuracy: +(2.0% rdg + 3 dgts) on 200Q range +(2.0% rdg + 1 dgt) on 2kQ to 200kQ ranges +(3.5% rdg + 4 dgts) on 20MQ range Open circuit volts: 0.3Vdc (3.0Vdc on 2002 range) Overload protection: SOOVDC or AC rms DIODE TEST Test current: 1.0mA +0.6mA Accuracy: (3.0% rdg + 1 dgt) Open circuit volts: 3.0Vdc typical Overload protection: SOOVDC or AC rms BATTERYTEST Ranges: 1.5V, 9V Resolution: ImV, 10mV Accuracy: +(3.5% rdg + 2 dgts) Loaded current: 150mA typical for 1.5V range 6mV typical for 9V rangeOPERATION Before taking any measurements, read the Safety In- formation Section. Always examine the instrument for damage, contamination (excessive dirt, grease, etc.) and defects. Examine the test leads for cracked or frayed insulation. If any abnormal conditions exist do not attempt to make any measurements. Voltage Measurements . Connect the red test lead to the VQ jack and the black test lead to the COM jack. 2. Set the Function/Range switch to the desired Volt- age type (AC or DC) and range. If magnitude of voltage is not known, set switch to the highest range and reduce until a satisfactory reading is obtained. 3. Connect the test leads to the device or circuit being measured. 4. For dc, a (-) sign is displayed for negative polarity; positive polarity is implied. Current Measurements . Set the Function/Range switch to the desired cur- rent range. 2. For current measurements less than 200mA, con- nect the red test lead to the pA/mA jack and the black test lead to the COM jack. . For current measurements of greater 200mA, con- nect the red test lead to the 10A jack and the black test lead to the COM jack. 4. Remove power from the circuit under test and open the normal circuit path where the measurement is to be taken. Connect the meter in series with the circuit. 5. Apply power and read the value of the display. - la Resistance Measurements |. Set the Function/Range switch to the desired resis- tance range. 2. Remove power from the equipment under test. 3. Connect the red test lead to the VQ jack and the black test lead to the COM jack. 4. Connect the test leads to the points of measure- ments and read the value from the display. Diode Tests 1. Connect the red test lead to the VQ jack and the black test lead to the COM jack. 2. Set the Function/Range switch to the ->+- position. 3. Turn off power to the circuit under test. External voltage across the components causes invalid readings. 4. Touch probes to the diode. A forward-voltage drop is about 0.6V (typical for a silicon diode). 5. Reverse probes. If the diode is good, 1 is displayed. If the diode is shorted, .000 or another number is displayed. 6.If the diode is open, 1 is displayed in both directions. Battery Test 1. Connect the red test lead to the wA/mA jack and the black test lead to COM jack. 2. Set the Function/Range switch to the desired 1.5V or 9V battery test range. 3. Connect the test leads to the 1.5Vdc battery under test. Normally, a good 1.5Vdc battety will read above 1.25Vdce. Consult the battery manufacturer for com- plete battery specifications to determine actual bat- tery life remaining and condition of battery. MAINTENANCE Maintenance consists of periodic cleaning and battery replacement. The exterior of the instrument can be cleaned with a dry clean colth to remove any oil, grease or grime. Never use liquid solvents or detergents. Repairs or servicing not covered in this manual should only be performed by qualified personnel. Battery Replacement WARNING TO AVOID ELECTRICAL SHOCK, DISCONNECT THE TEST LEADS AND ANY INPUT SIGNALS BEFORE REPLACING THE BATTERY. REPLACE ONLY WITH SAME TYPE OF BATTERY. (9-Volt) This meter ts powered by a NEDA type 1604 or equiva- lent 9-volt battery. When the meter displays the fy the battery must be replaced to maintain proper operation. To replace the battery, remove the three screws from the back of the meter and open the bot- tom case, remove the battery from battery room. Fuse Replacement If no current measurements are possible, check for a blown overload protection fuse. There are two fuses; Fl for the pA/mA jack and F2 for the 10A jack. For access to fuses, remove the three screws from the back of the meter and open the bottom case. Replace F! only with the original type 0.5A/250V, fast acting fuse. Replace F2 only with the original type 10A/ 600V, fast acting ceramic fuse.NOTE The instrument complies with class], overvoltage CAT.IL of the TEC1O10-1(EN61010-1) Standard. Pollution degree 2 in accordance with IEC-664 indoor use. If the equipment is used in a manner not specified, the protection provided by the equipment may be impaired. Ag When servicing, use only specified replace- ment parts or equivalent. The symbols used on this instrument are: A Caution, risk of electric shock Caution, refer to accompanying documents G) Equipment protected throughout by Double insulation (Class IT) ~ Alternating current sz: Direct current + Ground CE This product complies with the requirements of the following European Community Directives: 89/336/ EEC (Electromagnetic Compatibility) and 73/23/EEC (Low Voltage) as amended by 93/68/EEC (CE Marking). However, electrical noixe or intense clectromagnetic fields in the vicinity of the equipment may disturb the measurement circuit, Measuring instruments will also reapond to unwanted signals that may be present within the mea: surement circuit. Users should exercise care and take appropriate precau- tions to avoid misleading results when making measurements in the presence of clectromagnetic interference. Service Information Warranty Service: Please retum the product in the original packaging with proof of purchase to the below address. Clearly state in writing the performance problem and retum 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 retum 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 retum shipping to locations in North America. For overnight shipments and non-North America shipping fees contact: B&K Precision Corp. 1031 Segovia Circle / Placentia, CA 92870 Phone: 714- 237-9220 / Fax: 714-237-9214 Website: www.bkprecision.com Include with the instrument your complete return shipping address, contact name, phone number and description of problem. 1031 Segovia Circle Placentia, CA 92870 USA TEL: 714-237-9220 PN:480-819-9-001 FAX: 744-237-9214 Printed in Taiwan www.bkprecision.com P/N: 7000-1548