Sealey MM402 Instructions Manual

p WARNING! Ensure that you read, understand and apply the safety and operationalinstructions before connecting the multimeter. Only when you are sure that youunderstand the procedures is it safe to proceed with testing.Operating temperature range 0OC to 40OC.Remember to turn on multimeter before use and to turn it off when measurement is completed.NOTE: WHEN THE FIGURE 1 IS DISPLAYED, IT INDICATES AN OVER-RANGE SITUATION AND A HIGHER RANGE NEEDS TO BE SELECTED.3.1. MEASURING VOLTAGE3.1.1. Connect the black test lead to the COM input socket and the red test lead to the V/W input socket.3.1.2. Set the rotary switch to the required V (dc) or V ~ (ac) range and connect test leads across the source or load under measurement. The polarityof the red test lead connection will be indicated when measuring dc voltages.3.2. MEASURING CURRENT3.2.1. Connect the black test lead to the COM input socket and the red test lead to the mA input socket for measuring a maximum of 200mA or the 10A inputsocket for measuring a maximum of 20A.3.2.2. Set the rotary switch to the required A (dc) or A ~ (ac) range and connect test leads in series with the load under measurement. The polarity of thered lead connection will be indicated when measuring dc.3.3. MEASURING RESISTANCE3.3.1. Connect the black lead to the COM input socket and the red test lead to the the V/W input socket (the polarity of the red lead is +).3.3.2. Set the rotary switch to the required W range and connect the test leads across the resistance under measurement.3.3.3. If the resistance being measured exceeds the maximum value of the range selected or the input is not connected, an over-range indication 1 will be displayed.3.3.4. When checking in-circuit resistance, ensure that the circuit under test has all power removed and all capacitors have been fully discharged.3.3.5. When measuring resistance over 1MW, the meter may take a few seconds to get a stable reading. This is normal for high resistance measurements.3.3.6. In the 200MW range the display reading is approx. 1.0 when the test leads are shorted. This figure must be subtracted from measured results. For example,when measuring a 100MW resistance the display reading would be 101.0 and the corrected result would be 101.0 - 1.0 = 100MW.3.4. MEASURING CAPACITANCE3.4.1. Set the rotary switch to the required Cx range.3.4.2. Before inserting capacitor into the capacitor socket, ensure that the capacitor has been fully discharged.1.1. PERSONAL PRECAUTIONS3 When using this multimeter, please observe all normal safety rules concerning:Protection against the dangers of electronic current.Protection of the meter against misuse.3 Full compliance with safety standards can only be guaranteed if used with the test leads supplied. If necessary, they must be replaced with genuine Sealeyleads with the same electronic ratings. Failure to do so will invalidate the warranty.7 DO NOT use leads if damaged or if the wire is bared in any way.1.2. GENERAL SAFETY INSTRUCTIONS3 Familiarise yourself with the application and limitations of the multimeter as well as the potential hazards. IF IN ANY DOUBT CONSULT A QUALIFIED ELECTRICIAN.3 When the meter is linked to a measurement circuit, do not touch unused meter terminals.3 When the value scale to be measured is unknown beforehand, set the range selector to the highest value.3 Before rotating the range selector to change functions, disconnect test leads from the circuit under test.p WARNING! Never perform resistance measurements on live circuits.3 Always be careful when working with voltages above 60Vdc or 30Vac rms. Keep your fingers behind the probe barriers while measuring.3 Before attempting to insert transistors for testing, ensure that test leads have been disconnected.3 Components should not be connected to the transistor socket, capacitor socket or temperature socket when making voltage measurement with the test leads.3 When not in use, store the multimeter carefully in a safe, dry, childproof location. Storage temperature range -10OC to 50OC.3 Push button ON-OFF power switch.3 Single 32-position easy-to-use rotary switch for function and range selection.3 High sensitivity 100μV.3 Automatic polarity indication on DC range.3 Automatic over-range indication on DC range.3 All ranges fully protected.3 Diode testing with 1mA fixed current.3 Capacitance measurements 1μF to 20μF.3 Resistance measurements 0.1W to 20MW.3 Transistor hFE test with ib-100μA.3 Temperature measurement with or without K type thermocouple.Layout:1. Power Switch. 3. Transistor Socket. 5. Temperature Socket. 7. Capacitor Socket.2. LCD Display. 4. Rotary Switch. 6. Input Sockets.INSTRUCTIONS FOR:10 FUNCTION MULTIMETER with TEMP. PROBEMODEL: MM402Thank you for purchasing a Sealey product. Manufactured to a high standard this product will, if used according to theseinstructions and properly maintained, give you years of trouble free performance.1. SAFETY INSTRUCTIONSIMPORTANT: PLEASE READ THESE INSTRUCTIONS CAREFULLY. NOTE THE SAFE OPERATIONAL REQUIREMENTS, WARNINGS & CAUTIONS. USE THE PRODUCTCORRECTLY AND WITH CARE FOR THE PURPOSE FOR WHICH IT IS INTENDED. FAILURE TO DO SO MAY CAUSE DAMAGE AND/OR PERSONAL INJURY AND WILLINVALIDATE THE WARRANTY. PLEASE KEEP THESE INSTRUCTIONS SAFE FOR FUTURE USE.2. FEATURES3. OPERATIONMM402 - 1 - 061201

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