Multi Measuring Instruments Co.,Ltd. [Current Sensors,CT Sensors,Measuring Instruments]
Instruction Manual for MULTI MEASURING INSTRUMENTS models including: 104 AC Current Mini Digital Clamp-On Tester, 104, AC Current Mini Digital Clamp-On Tester, Mini Digital Clamp-On Tester, Digital Clamp-On Tester, Clamp-On Tester, Tester
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M-104 Mini AC Leakage Current Clamp Tester
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DocumentDocumentAC CURRENT MINI DIGITAL CLAMP-ON TESTER MODEL 104+ INSTRUCTION MANUAL Thank you very much for selecting our digital AC clamp-on tester. This model is complex instrument and employ a very reliable mechanical/electronic design. Before you use your new instrument, read this Instruction Manual completely and familiarize yourself thoroughly with all functions. With proper use and care, your tester will give you years of satisfactory service. 1. FEATURES This tester is a clamp-on type leakage ammeter which represents the latest in current transducer and digital technology and is the world's smallest and most accurate clamp-on type instrument of its type. Compact and lightweight. This tester is least affected by the external magnetic field. 2. CAUTION Before operating this instrument, familiarize yourself with all instructions outlined in this manual. Always check to make sure that the function switch is set to the proper position. When making measurements, use CAUTION as dangerous voltages may be present in normally safe areas. To avoid electrical shock, use CAUTION when working above 60V DC or 25V AC rms. Such voltages pose a shock hazard. Never make measurements with the battery cover OFF. Never fail to keep the maximum tolerable input. Never operate this instrument if it becomes wet, damp or has any liquid condensation build-up on any part of the instrument. Never make measurements for uninsulated conductors or bus bars. 3. SPECIFICATION Measuring Method: Display: Range: Dual integration mode LCD, 3200 count with bar graph 0~30mA/300mA/30A/150A Ranging: Accuracy: 2 manual ranging 23±5, 80%RH or less Range 30mA/300mA 30A/150A Jaw opening capability: Over range indication: Resolution Accuracy 0.01mA 0.01A ±2.0%rdg ±5dgt(50/60Hz) 33mm "OL" mark on LCD Data hold indication: "DH" mark on LCD Auto power off function Available Low battery indication: " " mark on LCD in case of 2.5V~2.7V Sampling time: Limitation of circuit voltage: Approx. 2 times/s(digital). Approx. 12 times/s(bar graph). Less than AC 600V Operating Temperature: Storage temperature: Power supply: 0 to +40, 80%RH (non-condensing) -10 to +60, 70% RH (non-condensing) LR-44x (1.5V)x2 or SR-44 (1.5V)x2 Power consumption: Approx. 5mW Size: 54(W)x152(H)x23(D)mm Weight: Approx. 85 gs. Accessories: Batteries, LR-44..................... 2 Soft case.............................. 1 Instruction manual....................1 4. DIMENSIONS AND PANEL FUNCTION Current transducer(Jaw) Jaw opening lever Data hold switch LCD display Range selector switch Power switch Battery cover Wrist strap 5. METHOD OF MEASUREMENT 5-1. Preparation and Caution before Measurement Before making measurements, install the batteries. Two LR-44 batteries can be used. Avoid using the tester in places subject to high temperatures, humidity or excessive vibration. Before measurements, be sure the data hold switch is set to "OFF". (It is impossible to make measurements if the data hold switch is set to "ON".) Remove the battery if the tester will not be used for a long period of time. 5-2. Measurement of Leakage Current 5-2-1 . Leakage current measurement for the grounded conductor 1) Set the power switch to "ON" position. 2) Set the range selector switch to a range appropriate to the current to be measured. 3) Clamp the conductor of the circuit under test with the current transducer. 4) If you make measurements in a dark place or in a place where it is difficult to see the readings, use the data hold switch. 5-2-2. Leakage current measurement for the single-phase or three-phase electric circuit. 1) Set the power switch to "ON" position. 2) Set the range selector switch to a range appropriate to the current to be measured. 3) To measure a leakage current in a single-phase electric circuit, clamp the two conductors together. Or clamp the three conductors together in the case of the three-phase electric circuit. 4) If you make measurements in a dark place or in a place where it is difficult to see the readings, use the data hold switch. 5-3. Measurement of Line Current 1) Set the power switch to "ON" position. 2) Set the range selector switch to a range appropriate to the current to be measured. 3) Clamp the conductor of the circuit under test. 4) If you make measurements in a dark place or in a place where it is difficult to see the readings, use the data hold switch. Note: Clamp around only one conductor of the circuit to be measured. CAUTION: This tester is designed for low voltage applications. To avoid electrical shock or damage, the measurement is limited to the circuit under 600V AC. 6. REPLACEMENT OF BATTERIES When the battery becomes exhausted or drops below the operating voltage, the " " mark is displayed. Turn the power switch to "OFF", prior to installing batteries. To install the batteries, remove the battery cover located on the unit back.(See Fig.2) Insert the two LR-44 or SR-44 into the battery case making sure that proper polarity is observed. (See Fig.3). Always replace both batteries at the same time. If the difference between the voltages of the batteries is big, the measurement error may be caused. MULTI MEASURING INSTRUMENTS CO.,LTD. Akihabara Murai Bldg. 7F, 1-26 Kanda Sakuma-cho, Chiyoda-ku, Tokyo 101-0025 JAPAN TEL: +81-3-3251-7016 FAX: +81-3-3253-4278 Home Page: http://www.multimic.com/e E-mail: multi@multimic.com