Devices that combine an ammeter, a voltmeter and an ohmmeter are convenient for use in everyday life and in production. It is important for every homemaster to know how to use the DT 832 multimeter, one of the most popular devices. At first, you need to read and remember the instructions. It should be strictly carried out, because at the slightest error the device may fail.
The device is designed to determine the parameters:
- electric current;
- voltage between two points of the circuit;
- electrical resistance.
The device also performs a number of operations:
- continuity of circuits with digital indication and sound signaling;
- health monitoring of semiconductor parts;
- gain measurement of transistors;
- temperature measurements with a thermocouple.
Multimeter device
To learn how to use the DT 832 multimeter correctly, you first need to familiarize yourself with its device.
- The liquid crystal display shows the numerical values ββof the parameters.
- Instrument functions are changed by switch. In the idle state, it is turned off, otherwise the battery will quickly drain.
- Three instrument sockets are used to connect with probes. A pin with a black wire is inserted into the main one ("COM") with a negative polarity. A red probe is inserted into the next jack labeled VΞ©mA. It serves to measure current, voltage and resistance. Through the third socket (upper), a direct current value of 0.2 to 10 A is measured.
- Socket for measuring the gain of transistors.
- Wires with probes. Compared to the device itself, their quality is much lower, and many home masters make them anew for themselves. The wire is taken with a cross section of 1 mm 2 , and the sheath should be thick and elastic. To connect to any place in the circuit through insulation or varnish, instead of probes, needles are soldered to the wires.
How to use the DT 832 multimeter: instruction
The required mode is set by the switch. The front panel of the device and the instructions indicate the limits of the measured characteristics.
Before using the DT 832 multimeter, you must put the switch in the desired mode.
Resistance
The function is mainly used for continuity of electric circuits when it is necessary to detect an open circuit or conduct new wiring. The switch is installed in the resistance sector to the lowest level with an audible alarm about a short circuit. No signal means there is a gap or an excess of 50 Ohms. Contact may break directly between the probe and the socket. To check the operability of the device, the wires are shorted. The instrument should show zero or more ohms.
Before using the DT 832 multimeter to test electronic circuits, one resistor foot must be removed from the board.
Chinese-made multimeters with low quality have a significant error when measuring electrical parameters. Also, the signal is distorted from the connecting wires and probes. Professionals make accessories for the tester with their own hands, since factory ones are usually of poor quality.
DC voltage
The DCV sector is divided into five ranges. For measurements, a large step of the interval of values ββis taken. If you set a smaller range, the device may burn out. If high accuracy is not required or the measured value is unknown, the multimeter is set to the maximum limit. Then the range can be set more precisely. The signal for exceeding the measuring range is a warning HV, which lights up on the display in the upper left corner.
Especially carefully measured large voltage values. It is not necessary to observe the polarity: if it is confused, a "-" sign appears on the left of the screen.
AC voltage
For measurements, the ACV sector is used. It is important to correctly connect the tester to the required limits, otherwise it may fail.
If you select a DC voltage range instead of AC, the error can be fatal to the device.
D.C
Small currents are measured in the DCA sector. You should be extremely careful here. If you mistakenly measure the voltage in this range, a short circuit will occur.
To measure current up to 10 A, the red probe switches to the upper socket. It is important to know how to use the DT 832 Digital Multimeter at high current. Readings should be taken for a few seconds!
Diode test
The radio component is soldered at one end from the board when measurements are taken. The transistor can also be checked on the resistance measurement sector, because according to the principle of operation, the element is two diodes connected towards each other. Having found out which of the conclusions is the base, both transitions are checked for breakdown. For pnp transistors, the positive probe is installed on the base, and the minus one should show infinity on the other pins. For npn elements, a wire from the "COM" jack is connected to the base. The resistance of the emitter junction is greater than the collector junction and is 0.5-1.2 kΞ©.
The junction of the transitions determines the health of the transistor. The current gain can be determined by inserting the findings into the corresponding sockets on the panel.
Temperature measurement
The switch is set to the Tempo position, and the thermocouple plug is inserted into the instrument sockets. The internal temperature is measured without a thermocouple on the same function range.
Capacitor health check
In the instructions that describe how to use the DT 832 multimeter, for dummies only the basic functions that are typical for most devices are provided. When you need to check the capacitor, but there is no possibility of determining the capacitance, you can at least establish whether it is working or not. First, it should be soldered and shorted legs to remove the charge, if any.
Then the switch of the device is installed on the continuity and the ends of the probes need to touch the terminals of the polar capacitor, holding them in this position. If its capacitance is greater than 0.25 uF, the resistance will appear on the display, and then β1β will light up. This means that charging is over and the resistance is infinitely large. If the unit appears immediately, then a break has occurred inside, if the resistance is zero, the circuit between the plates.
A non-polar capacitor is checked for a resistance value that must be greater than 2 mOhm on a working part.
Multimeter "Ermak"
An ordinary user can use the simple, cheap and reliable multimeter "Ermak" digital DT 832. How to use it? Very simple, it is an ordinary tester.
The device turns on by setting the switch to the desired position. The specifications are no different from the usual ones, and the price is small. Reviews about the Chinese-made model are given positive, it is quite suitable for solving domestic problems with wiring.
Conclusion
Every master should know how to use the DT 832 multimeter, since it is extremely necessary in everyday life. Most of the reviews on the model are positive, thanks to the numerous features and reasonable price. In order for the device to serve for a long time, you should carefully follow the instructions for its use.