Overview multimeter ADM 30 - universal device for DIY

In Russia, one of the most common brands of portable instrumentation became Mastertech. Company orders their devices on the side, and this took the plant-manufacturer, offering the third in own brand of ADM. The first bore the proud name of HYELEC and was not very well received by our compatriots.

Such a move allows the plant to save, to refuse to pay for the brand, and to us - to get a quality product with proven performance.

Thus it was created ADM 30 - cheap device that includes all the necessary tools DIY-master.

What is the ADM 30

The real multimeter - all-purpose meter. inside:

• voltmeter DC / AC (1 000);
• ammeter AC / DC (10 A);
• ohmmeter (resistance meter);
• capacitance meter;
• frequency meter;
• light meter (meter illumination level);
• sound level meter;
• thermometer;
• humidity measuring device;
• diodes tester;
• apparatus for continuity at the break.

Sooner or later, all of these devices are very helpful. The exception may seem meters and luminance noise, but it is not. The first really helps when installing lighting and zoning rooms, the second one can be useful in the car and in the kitchen.

When all this abundance there, it seems that it is not necessary. But with the advent of universal meter lot can be assessed not on the eyes, and in the figures.

Let's talk more about the instrument.

Appearance and Design

Multimeters - devices for special purposes. But their appearance is a very important characteristic: it provides convenience and measurement accuracy.

ADM housing 30 is a sturdy plastic pouch hermetically sealed rubber bag. At the upper end are arranged additional sensors for measuring temperature, humidity, noise and lighting.

There are slots for stem-and-loop strap. In general, it looks cheap, but very durable, can withstand bad touch soldering casual and absolutely not afraid of falling.

For the convenience of using a stationary support extension provided with the ability to install at any angle.

Hidden underneath the battery compartment for the AA battery. Usually used "Crone", which is very inconvenient.

Complete probes good quality. Also, the manufacturer supplied multimeter contact thermocouple for temperature measurement.

Display, control and ease of use

large LED-display, by which the device demonstrates evidence is provided to display information. Will understand even a child.

Since the controls are still easier. Modes (measured value) and a measurement range with the large change rotary switch. Modes are displayed as thumbnails with captions, so if you once taught physics problems using is not.

Switch to help additional buttons with which you can turn on the display backlight, freeze readings, and much more. Of interesting: a single digit can be chosen as a base, so that subsequent measurements considered from this point (relative measurements).

Calculation produces multimeter automatically. There is a button that allows you to enable automatic measurement range. It is only necessary to choose the measurement value, the rest of ADM 30 DIY.

Can you believe the Chinese unit

The process could not fix the meter calibration, but the results are worth to discuss. For the Chinese, they are very good budget system and comply with the passport:

During verification it turned out that the meter can measure with high precision sine wave (AC) of 10 Hz to 2 kHz.

For DC voltage error fluctuates within one decimal place over the entire range of measurements.

Measuring current and resistance slightly greater deviations indicate - within 0.5%. Error with more complex measurements of capacitance and frequency trusted source similarly stacked in nameplate values.

Measuring the relative humidity are difficult ADM 30: deviation reaches 5-7%. That, however, is permissible for an amateur device.

Temperature measurement is implemented in two ways. Without thermocouple removes multimeter using the internal sensor values ​​of the surrounding air. An external probe can perform measurements of surface temperature. Apparently, the instrument is calibrated at the factory on the boiling point of water. But readings above-below may be followed by an error of 3%.

Light Meter - a rare instrument in the house. Apparently, proceeding from this manufacturer shalturil: error reaches 10-15%. Enough for a rough estimate of the quality of light (this is very important for the health and well-being) in everyday life, but no more.

It works with the noise meter 30 dB. Several odd solution leading to a 10% error at low noisy (the system unit volume measurements in silence and the like distortions). By increasing the noise error is reduced.

Bottom line: a good universal tool

Own brand has allowed the manufacturer to make ADM 30 cheap enough to attract the attention of the buyer. Per $ 50 (The cost of three simple multimeters), it offers a complete set of necessary household or DIY novice-master of instrumentation.

What is missing is flush detector and unpretentious laser level, which can be purchased for $ 5-10. Everything else is already complete, and do not have to deal with a toad, which insists on the futility of the sound level meter (it is not).

Error allow the use of ADM 30 and for professional work requiring no tested devices: in car repair, home appliances and gadgets. Useful even in the kitchen.