Comparison UNI-T UT131A vs UNI-T UT33A+
Add to comparison |  |  |
|---|---|---|
| UNI-T UT131A | UNI-T UT33A+ | |
| Compare prices 1 | Outdated Product | |
| TOP sellers | ||
| Product type | multimeter | multimeter |
| Type | digital | digital |
Measurement types | ||
| Measurements | voltage current resistance capacity | voltage current resistance capacity |
Specs | ||
| Current type | AC / DC | AC / DC |
| Voltage type | AC / DC | AC / DC |
| DC voltage minimum | 200 mV | 200 mV |
| DC voltage max. | 250 В | 600 В |
| Measurement accuracy (V⁻) | 0.5 % | 0.5 % |
| AC voltage minimum | 200 mV | 200 mV |
| AC voltage max. | 250 В | 600 В |
| DC minimum | 200 µA | 200 µA |
| DC max. | 10 А | 10 А |
| AC minimum | 200 µA | 200 µA |
| AC max. | 10 А | 10 А |
| Impedance minimum | 200 Ω | 200 Ω |
| Impedance max. | 200 MΩ | 200 MΩ |
| Display size | 66x51 mm | 48x16 mm |
| Display count | 1999 | 1999 |
| Display value | 3 1/2 | 3 1/2 |
Features | ||
| Functions | diode test continuity test mode autoranging | diode test continuity test mode autoranging |
| In box | battery test probes | battery test probes |
General | ||
| Display backlight |  | |
| Stand |  | |
| Power source | battery | battery |
| Battery type | 2xAAA | 2xAAA |
| Dimensions | 134x77x47 mm | 134x77x47 mm |
| Weight | 206 g | 206 g |
| Added to E-Catalog | may 2021 | may 2021 |
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Glossary
DC voltage max.
The highest DC voltage (see “Voltage type”) that can be effectively measured with this instrument.
Compliance with this parameter is important not only for correct measurements, but also from a safety point of view. Measuring too high voltage can lead to malfunctions of the device, ranging from the operation of emergency protection (and it can take the form of a disposable fuse that requires replacement after operation) and ending with a complete failure and even fire. Therefore, it is impossible to exceed this indicator anyway. Yes, and choosing a device for maximum voltage is worth with a certain margin — at least 10 – 15%: this will give an additional guarantee in case of emergency situations. On the other hand, the margin should not be too large: a high constant voltage threshold can degrade the accuracy of measurements at low voltage, as well as affect the price, dimensions and weight of the device.
Note that most multimeters and other similar devices have several measurement ranges, with different maximum thresholds. So, for a safe measurement of voltage close to the maximum, you need to set the appropriate mode in the settings.
Compliance with this parameter is important not only for correct measurements, but also from a safety point of view. Measuring too high voltage can lead to malfunctions of the device, ranging from the operation of emergency protection (and it can take the form of a disposable fuse that requires replacement after operation) and ending with a complete failure and even fire. Therefore, it is impossible to exceed this indicator anyway. Yes, and choosing a device for maximum voltage is worth with a certain margin — at least 10 – 15%: this will give an additional guarantee in case of emergency situations. On the other hand, the margin should not be too large: a high constant voltage threshold can degrade the accuracy of measurements at low voltage, as well as affect the price, dimensions and weight of the device.
Note that most multimeters and other similar devices have several measurement ranges, with different maximum thresholds. So, for a safe measurement of voltage close to the maximum, you need to set the appropriate mode in the settings.
AC voltage max.
The largest alternating voltage (see “Type of voltage”) that can be effectively measured using this model. This parameter is important not only for measurements as such, but also for safe handling of the device: measuring too high voltage will, at best, trigger emergency protection (and it is possible that after that you will have to look for a new fuse to replace the burned one), at worst — to equipment failure or even fire. In addition, for safe measurements, a voltage margin is highly desirable — this is due both to the characteristics of the alternating current and to the possibility of various emergency situations in the network, primarily voltage surges. For example, for 230 V networks, it is desirable to have a device for at least 250 V, and preferably 300 – 310 V; detailed recommendations for other cases can be found in special sources.
Note that most multimeters and other similar devices have several measurement ranges, with different maximum thresholds. So, for a safe measurement of voltage close to the maximum, you need to set the appropriate mode in the settings.
Note that most multimeters and other similar devices have several measurement ranges, with different maximum thresholds. So, for a safe measurement of voltage close to the maximum, you need to set the appropriate mode in the settings.
Stand
The presence of a stand in the design of the device.
Such a stand, usually, is a folding plate or frame in the lower part of the case. In the open state, it allows you to install the device at an angle to the surface on which it lies — this position is often more convenient than strictly horizontal.
Such a stand, usually, is a folding plate or frame in the lower part of the case. In the open state, it allows you to install the device at an angle to the surface on which it lies — this position is often more convenient than strictly horizontal.