Devices that combine an ammeter, a voltmeter and an ohmmeter are convenient for use at home and in production. It is important for every home handyman 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 followed, since the slightest mistake may cause the device to fail.
The device is designed to determine the following parameters:
- electric current;
- voltage between two points of an electrical circuit;
- electrical resistance.
The device also performs a number of other operations:
- continuity testing of circuits with digital indication and audio alarm;
- monitoring the serviceability of semiconductor parts;
- measurement of transistor gains;
- temperature measurements with a thermocouple.
Multimeter device
To learn how to use the DT 832 multimeter correctly, you first need to become familiar with its design.
- The liquid crystal display shows the numerical values of the parameters.
- The functions of the device are changed by a switch. When not in use, it is turned off, otherwise the battery will quickly drain.
- Three sockets of the device are used for connection with probes. A pin with a black wire is inserted into the main one (“COM”) with negative polarity. A red probe is inserted into the next socket labeled VΩmA. It is used to measure current, voltage and resistance. Through the third socket (upper) the DC current value is measured from 0.2 to 10 A.
- Panel for measuring the gain of transistors.
- Wires with probes. Compared to the device itself, their quality is much lower, and many home craftsmen make them again for themselves. The wire is taken with a cross-section of 1 mm2, and the sheath must be thick and elastic. To connect to any place in the circuit through insulation or varnish, instead of probes, needles are installed, soldered to the wires.
Measured quantities
A multimeter allows you to measure electrical characteristics. Using the multimeter tool is very easy with the manual. There are those options that can show the temperature. Today, thanks to this model, it is possible to measure voltage with current in an electric motor, radio component, switch, light inductive coil, microcircuit, relay, and others. Thanks to the tester, you can measure direct and alternating current, conductor resistance, a section of a circuit or the current force in a section of an electrical circuit that has a switched on load. This multimeter can also calculate capacitance.
Continuity testing of diodes and wiring is the most common mode of application, since the socket with the switch often suddenly stops working, the contact begins to disappear, or the power supply circuit is completely broken. This is why you need an electrical appliance. It helps to find out whether the wires have contact or whether they will need to be repaired.
Note! It is worth pointing out that often, in addition to at home, a multimeter is used in a car to check the health of the generator, starter, battery
DT-182 is considered an inexpensive multimeter that has basic measuring functions and is small in size. It is needed to check and accurately ring diodes. It has a high-quality structure and sufficient characteristics to carry out a comprehensive check of all necessary systems on the network. Correct use of the device is only possible according to the instructions. You can measure any lamps, sockets and other devices with probes.
Resistance
The function is used primarily when testing electrical circuits, when it is necessary to detect a break or install new wiring. The switch is set in the resistance sector to the lowest level with an audible short circuit alarm. The absence of a signal means there is a gap or the value is exceeded 50 Ohms. Contact may be broken directly between the probe and the socket. To check the functionality of the device, the wires are short-circuited. The device should show zero or several ohms.
Before using the DT 832 multimeter to test electronic circuits, one leg of the resistor must be removed from the board.
Chinese-made multimeters with low quality have a significant error when measuring electrical parameters. The signal is also distorted by connecting wires and probes. Professionals make accessories for the tester with their own hands, since factory ones are usually of low quality.
Caring for the device
How to use a multimeter: detailed instructions for dummies
Attention If the operating instructions established by the manufacturer are violated, the protection applied to this device may deteriorate. If malfunctions or errors occur in the operation of the multimeter, stop using it immediately
Checking the operation and repairing the device must be carried out in specialized workshops
If malfunctions or errors occur in the operation of the multimeter, stop using it immediately. Checking the operation and repairing the device must be carried out in specialized workshops.
Wipe the multimeter with a soft cloth; do not use abrasives or solvents for cleaning. The electronic circuit of the multimeter does not need to be cleaned.
Battery Replacement
If the low battery symbol appears on the display, the battery must be replaced. To replace the battery, remove the screws on the back cover of the multimeter. Remove the back cover from the multimeter body. The battery and fuse are replaced with the power turned off and the probes disconnected from the device.
Remove the old battery and install a new one that meets the specification: 9V CROWN type (NEDA1604, 6F22). Replace the case back cover and tighten the screws. When installing a new battery, ensure correct polarity.
Replacing the fuse
The fuse fails only in the event of a significant and prolonged overload of the device due to the incorrect selection of measurement ranges.
To replace the fuse, remove the back cover from the multimeter, as when replacing the battery, and replace the fuse with a new fuse corresponding to the 0.5 A/250 V type. Close the case.
ATTENTION! To prevent fire, use fuses with a current/voltage rating similar to the current/voltage rating of the fuse installed at the factory.
DC voltage
The DCV sector is divided into five bands. For measurements, a large step of the value interval is 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. A signal that the measurement limit has been exceeded is the warning HV, which lights up on the display in the upper left corner.
Large voltage values are measured especially carefully. It is not necessary to observe the polarity: if it is reversed, a “-” sign appears on the left of the screen.
What it is
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A multimeter is a compact, ergonomic and multifunctional device for measuring the basic parameters of an electrical network for any purpose. All multimeters allow you to measure current, voltage, resistance and even temperature with a certain accuracy using their probes.
There are two types of multimeters:
- Analogue, which display measurement results using mechanical display tools: arrows, bars and division values, showing the quantitative characteristics of the measured value;
- Digital. The most commonly used types of devices, the information is displayed through a built-in display, and all data is calculated digitally.
Appearance of a conventional tester for household use
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 is switched 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!
Appearance
The probe device is quite utilitarian and its body has no frills. The latter is made in the form of a small plastic box, with (usually) rounded corners. On the front side, on top, there is a liquid crystal digital indicator, below is a rotary control for selecting modes. The contact inputs for the probes are located vertically on the lower right side of the multimeter. Next to each there is a marking of current and voltage limits.
The color of the digital multimeter itself varies and can be from pure black glossy to bright yellow. If the transistor test function is available in the model, a test circle with 8 contacts is located on its body at the bottom left (usually). It is divided into two parts. Semiconductor amplifiers containing a pnp junction are connected to one, and npn to the other. The connector inputs used are connected according to the information indicated in the housing markings to the legs of the base, emitter and collector transistor (they are indicated by the letters B, E, C on the multimeter).
Diode check
The radio component is soldered at one end from the board when measurements are taken. The transistor can also be checked in the resistance measurement sector, since according to the principle of operation the element is two diodes connected towards each other. Having found out which of the pins is the base, both transitions are checked for breakdown. For pnp type transistors, the positive probe is installed on the base, and the negative probe should show infinity on the other terminals. For NPN elements, a wire from the “COM” socket is connected to the base. The resistance of the emitter junction is greater than the collector junction and is 0.5-1.2 kOhm.
The continuity of the transitions determines the serviceability of the transistor. Its current gain can be determined by inserting the leads into the corresponding sockets on the panel.
Area of use
A multimeter is a universal device that allows you to measure AC and DC current, voltage and resistance. The scope of its application is quite large, in contrast to highly specialized devices that can only perform specific functions.
Multitesters are actively used in the industrial sector, electrical calculations, technology, and during repair or installation work. They are also used in finishing work, when specialists install an electrical network in rooms and houses along with the usual control lamps. These devices are indispensable assistants in everyday life. Any man using a multimeter can measure all the necessary quantities in a home electrical circuit and ensure high-quality connection of any equipment.
Multitesters are often sold in a kit equipped with various replacement parts.
Checking the health of capacitors
The instructions describing how to use the DT 832 multimeter for dummies provide only the basic functions that are typical for most devices. When you need to check a capacitor, but there is no way to determine the capacitance, you can at least determine whether it is working or not. First, you should unsolder it and short-circuit the legs to remove the charge, if any.
Then the switch of the device is set to 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 µF, the resistance reading will appear on the display, and then “1” will light up. This means that charging has ended and the resistance is infinitely large. If a unit appears immediately, it means there is a break inside; if the resistance is zero, there is a short circuit between the plates.
The non-polar capacitor is checked for the resistance value, which should be greater than 2 mOhm on a working part.
Characteristics
The parameters of the multimeter become most understandable if they are displayed in a table:
| Tester power supply | 3 V/9 V two AA or crown battery |
| Measured DC current | 200 µA - 200 mA |
| Resistance (Ohm) | 200–2000 k (2 mOhm) |
| DC Voltage Sensitivity | 200 mV–1000 V |
| -/- alternating current | 200–750V |
The accuracy class of 830 series devices is quite modest and depends on the specific characteristics being measured:
| Accuracy (±%/±reading unit) | Upper value | Gradation of measurements |
| DC voltage | ||
| 0.25 %/2 | 200 mV | 100 mV |
| 0.5 %/2 | 2000 mV/2 V | 1 mV |
| 20 V | 10 mV | |
| 200 V | 100 mV | |
| 1000 V | 1 V | |
| DC current strength | ||
| 1 %/2 | 2000 µA | |
| 20 mA | ||
| AC voltage | ||
| 1.2 %/10 | 200 V | 100 mV |
| 750 V | 1 V | |
| Resistance | ||
| 0.8 %/2 | 200 Ohm | 0.1 Ohm |
| 2000 Ohm | 1 ohm | |
| 20 kOhm | 10 ohm | |
| 200 kOhm | 100 Ohm | |
| 1 %/2 | 2000 kOhm (2 mOhm) | 1 kOhm |
Multimeter "Ermak"
The simple, cheap and reliable Ermak digital multimeter DT 832 is suitable for the average user. How to use it? Very simply, it is a regular tester.
The device is turned on by setting the switch to the desired position. The characteristics are no different from the usual ones, and the price is low. Reviews about the Chinese-made model are positive; it is quite suitable for solving household problems with electrical wiring.
How to use the Internet on a smartphone
Many people have modern smartphones, but sometimes problems arise with setting them up. Unfortunately, when purchasing mobile phones, consultants rarely explain how to set up the Internet correctly, so users have to deal with this issue themselves.
Setting up and using mobile Internet
Most often, when a smartphone is connected to the network for the first time, the user receives Internet settings automatically; they should be saved. But it also happens that this does not happen and you have to configure the mobile phone manually. To set up your iPhone, open the Settings menu and go to the “Mobile Network” subsection. Here we find a service provider; the necessary information is in the Telecom Operators section. You need to choose based on their operator and the type of connection that should be active - it can be 2G or 3G.
Sometimes this option is not suitable either, so complete manual configuration is required. In this case, select the Mobile network item in the menu, then Access Point and the Create new sub-item. Here you need to enter the following data:
- Connection name – here you can enter any name;
- APN - it is different for each operator (you need to specify it in the format - internet.beeline.ru);
- Username, it must match the operator name, for example, beeline;
- Next, enter a password, which must also match the name of the mobile operator.
Data for manual setup can be found on the mobile operator’s website. If all entered data is correct, then you can proceed to the connection. To do this, swipe your finger across the screen from top to bottom and click on the “Mobile data” button in the menu that opens.
Setting up and using WiFi
Wi-Fi is a wireless network that can be connected to in specially designated areas. This can be done at home, in restaurants, on the subway and in public places. Unlike mobile Internet, Wi-Fi provides higher Internet speed, and the connection is free.
To connect a smartphone to a Wi-Fi network, its owner does not need special programs; it is a very simple procedure and takes a minimum of time. First, open the main menu on your mobile device, then find the Settings section and go into it. A new window appears here, where a list of all available Wi-Fi connections is presented. If it is not there, then you need to move the slider to the active position and select the Wi-Fi you want to access.
It happens that some networks are password protected, in which case you need to enter the key. If the data is entered correctly, the smartphone connects to such a network and after that you can use the Internet.
Options for determining error
How to calibrate a device is a rather complicated question, because there is no single methodology that describes these actions. Each user selects a method that is convenient for him, which best matches the model of his multimeter and is affordable.
Most multimeters are used to measure voltage, test electrical networks, measure resistance, they test transistors, capacitors, and some models are capable of measuring temperature. It doesn't matter what model you have. The calibration method may be the same for several products from different companies.
Basically, multimeters have a standard circuit. They convert the resulting readings into voltage, which is compared with a reference value called VREF. Thanks to this, it is possible to obtain measured values.
In order for them to be as accurate as possible, it is necessary that the reference voltage be close to the ideal. Since its value in most cases is set by a conventional resistive divider, the accuracy of the data may depend on how fresh the device’s battery is. If it is discharged, the multimeter will produce incorrect data.
The inaccuracy of the reference voltage will make all other values obtained using a multimeter incorrect. The calibration technique requires precise setting of this particular initial parameter.
Advice. Before setting up the device, replace the battery or make sure it is well charged.
Many multimeters have adjustment elements for calibration. These are variable resistors with additional leads. It’s easy to find them; they have special markings on the board.
If the device is an old model and the board does not have such markings, find their approximate location, and then compare with the multimeter circuit.
Expert opinion
Viktor Pavlovich Strebizh, lighting and electrical expert
Any questions ask me, I will help!
Each user selects a method that is convenient for him, which best matches the model of his multimeter and is affordable. If there is something you don’t understand, write to me!
Safety Information
This multimeter is designed to comply with the IE-1010 test equipment safety standard for CAT II overvoltage and pollution category 2.
Digital multimeters comply with the requirements of GOST R 52319 (IEC 61010-1) in terms of device safety and GOST R 51522.1 (IEC 61326-1), GOST R 51522.2.2 (IEC 61326-2-2) in terms of electromagnetic compatibility.
To ensure proper operation when working with the device, follow the recommendations in this manual. Full compliance with safety standards can only be ensured by using the supplied test leads. If necessary, they can be replaced with similar ones.
Attention! Only qualified personnel who have the appropriate permit to carry out electrical measuring and installation work are allowed to work with electrical networks.
To avoid electric shock and/or damage to the multimeter, do not test voltages that may exceed 500V to ground.
Before using the multimeter, check the wires, connectors and probes for cracks, breaks or cracks in the insulation.
If the value of the measured parameter is not known in advance, set the maximum range.
Do not touch unused jacks while the multimeter is connected to the circuit being measured.
Never use the multimeter with the back cover open or the case not tightly closed.
Connect the test probe after connecting the common one. Disconnect in reverse order.
Do not measure resistance in a live circuit.
To avoid electric shock due to incorrect meter readings, replace the battery immediately when the low battery icon appears.
Always use caution when working with voltages above 42 V. Keep your fingers behind the barrier edge of the probes when taking measurements.
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- The switch can be placed in any position in the zone;
- A suitable measurement range is selected;
- Before the operation, the power supply must be turned off;
- Otherwise, the tester will not show the correct value;
- If you see the number 1 on the display, or the values Over and Ol, then you should set a higher range;
- Otherwise, overload will occur;
- When 0 appears, the tester is transferred to a smaller range.
Following these simple rules and consistency in your actions will allow you to quickly and without any problems carry out all the necessary procedures for measuring resistance.
A good multimeter function that often comes in handy when repairing home appliances. For example, I recently fixed my wife’s iron. And the tester turned out to be extremely useful in this work.
Calling
I didn't tell you anything about the back panel of the multimeter. Although there are several more functions there. They are mainly intended for radio technicians who are professional in their work. They will not be needed for tasks at home or when repairing a car.
