※ General Information The meter is a multi-function instrument with high measurement accuracy, fast response, and high safety level. Embedded with a special IC up to 2000 counts, this IC is composed of high-precision A/D converter with high-speed digital processor. It is with accurate measurement, high resolution, fast operation, complete software calibration, no change in long-term use in accuracy, which is suitable for professional engineers, maintenance engineers, teaching, etc.
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When making measurement with a test lead, place your fingers behind its protective ring. When switching to another measuring range, be sure that test lead has already been taken off the measured circuit. For all DC functions, to prevent potential electric shock as a result of incorrect reading, please first use AC functions to check the absence of any AV voltage.
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DC (direct current) Ground Fuse Over-voltage protection CAT. II 600 V Conform with European Union standard 1.1.4 Maintenance Practices for Safety The operator must first pull out the test lead when the meter's case is opened or the battery cover is dismantled. ...
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2. General Description ① ② 2.1 Schematic Diagram ①. LED light ②. Non-contact voltage indicator ③ ③. LCD screen ④ ⑨ ④. Buzzer ⑤ ⑧ ⑤. Backlight & LED key ⑥. Rotary switch ⑥ ⑦. Input socket ⑧. Data hold key ⑨.
A, mA, A Current unit , k, M Resistance unit 2.3 Functional Keys Description Function Press the key to hold the measured value for the current HOLD moment. Press the key again to cancel this function. Short press the key to turn on backlight and short press again to exit.
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3.2 Measurement guidelines 3.2.1 AC Voltage and DC Voltage Measurement The meter provides DC voltage measuring ranges as follows: 200.0mV, 2.000V, 20.00V, 200.0V and 600V, and AC voltage measuring ranges: 200.0V and 600V. To avoid any electric shock and/or damage to the meter, do not attempt a voltage measurement if the voltage (valid value) is over 600V DC or AC current.
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Notes: The measured value of the electric resistance of the circuit differs a bit from the rated value of the electric resistance. To ensure measurement accuracy, in attempting a low resistance measurement, first put two pen-shaped meters in short circuit and capture the resistance reading of these short circuits.
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3.2.5 Current Measurement The meter provides DC current measuring ranges as follows: 2mA, 20.00mA, 200.0mA and 10.00A. Do not attempt a measurement on the current in a circuit, if when the voltage between the open-circuit voltage and the ground is over 250V. If the fuse is blown at the moment of measurement, you are likely to damage the meter or get yourself hurt.
alarms at different frequencies. Note: Voltage may still remain in the absence of any indication. The operator shall not rely on non-contact voltage detector to check the presence of voltage. The detection operation may be affected by various factors, including socket design, insulation thickness and type.
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4.2 Precision Indicator Accuracy: ( reading + digit) The accuracy warranty will run for 1 year upon the ex-factory date. Reference conditions: Ambient temperature is between 18℃ and 28℃ and relative humidity is no more than 80. 4.2.1 DC Voltage Measuring range Resolution Accuracy...
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Value Testing conditions Basic current is approx. NPN or PNP 0~2000 10uA,Vce is approx.2.8V 4.2.6 DC Current Measuring range Resolution Accuracy 2mA(only MT-1220) 0.001mA 20mA 0.01mA ±(1% Reading + 5 digits) 200mA 0.1mA 10.00A 10mA ±(3.0% Reading + 10 digits) Overload protection: protective tube for mA measuring range (F200mA/250V) ;...
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solvent. The dirty or damp input socket may affect reading. Steps for cleaning input sockets: Disenable the meter and pull all test leads out of the input socket. Clean up all dirty substances on sockets. Use a new cotton ball with a detergent or lubricant to clean each socket, because lubricant can prevent the socket vulnerable to dampness from pollution.
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