Combination multi-gas detector use and maintenance instructions
1, before use, you need to carefully read the manual of Santron A830L multimeter, familiar with the role of the power switch, range switch, jacks, special sockets.... In order to the primary beginner to learn convenient, I in the last picture especially marked its full function.
2,When using the digital multimeter, first put the power switch in the ON position.
3, the measurement of AC and DC voltage measurement: according to the need to range switch to DCV (on behalf of DC voltage) or ACV (on behalf of the AC voltage) of the appropriate range, the red pen inserted into the V / Ω holes, the black pen inserted into the COM holes, and the pen and the line to be measured in parallel, readings are displayed for the actual value of the measurement at this time.
4,Measurement of AC and DC current: Dial the range switch to the appropriate range of DCA (for DC current) or ACA (for AC current), insert the red pen into the mA hole (＜200mA) or the 10A hole (＞200mA), insert the black pen into the COM hole, and connect the multimeter in series in the circuit to be measured. When measuring the direct flow, the digital multimeter can automatically display the polarity (i.e., when measuring the red and black pens in series in the circuit under test, reversed it in front of the display value, just add a negative sign "a").
5, the measurement of the resistance value of the resistor: the range switch to Ω of the appropriate range, the red pen into the V / Ω hole, the black pen into the COM hole. If the measured resistance value exceeds the maximum value of the selected range, the multimeter will display "1", then you should select a higher range. When measuring resistance, the red pen is positive and the black pen is negative, which is the opposite of the pointer multimeter. Therefore, when measuring transistors, electrolytic capacitors and other components with polarity, you must pay attention to the polarity of the pen.
To add a final note, a digital multimeter, a multi-purpose electronic measuring instrument, generally contains functions such as an ammeter, voltmeter, ohmmeter, etc., and is sometimes referred to as a multimeter, multi-meter, multi-meter, or tri-meter.
Measurements of current, voltage, and resistance are generally considered the basic functions of a multimeter.
