Only US$163.00, buy best uni-t ut71d professional auto range intelligent digital multimeter sale online store at wholesale price. The UNI-T UT81C Scope Digital Multimeter is a compact piece of equipment capable of taking a comprehensive range of measurements. It can be used to measure AC voltages of up to 750 volts in four measurement ranges, and DC voltages of up to 1,000 volts in five measurement ranges.
Specifications | Range | UT81B |
DMM Specifications | ||
DC voltage (V) | 1000V | ±(0.8%+8) |
AC voltage (V) | 750V | ±(1%+15) |
DC current (A) | 10A | ±(1%+8) |
AC current (A) | 10A | ±(1.5%+8) |
Resistance (Ω) | 40MΩ | ±(1%+5) |
Capacitance (F) | 100μF | ±(3%+8) |
Frequency (Hz) | 10Hz~10MHz | ±(0.1%+3) |
Scope Specifications | ||
Bandwidth | 8MHz | |
Sampling rate | 40MS/s | |
Vertical accuracy | ±(5%+1) | |
Vertical sensitivity | 20mV/div~500V/div (1-2-5) | √ |
Time-base accuracy | ±(0.01%+1) | |
Time-base range | 100ns/div -5s/div (1-2-5) | |
Features | ||
Display count | 4000 | |
Auto range | √ | |
Duty cycle | 0.1~99.9% | √ |
Diode | √ | |
Auto power off | √ | |
Continuity buzzer | √ | |
Display | 160 x 160 monochrome | √ |
Trigger types | Auto run/Normal/Single shot | √ |
Memory | 10 screens and setups | √ |
Contrast and brightness setup | √ | |
Low battery indication | √ | |
USB interface | √ | |
LCD backlight | √ | |
Input impedance for DCV | Around 10MΩ | √ |
General Characteristics | ||
Power | 1.5V battery (R6) x 4 | |
Display | 60mm x 60mm | |
Product color | Red and grey | |
Product net weight | 498g | |
Product size | 200mm x 100mm x 48mm | |
Standard accessories | Batteries, test lead, alligator clip, USB interface cable, PC software CD | |
Standard individual packing | Gift box, English manual | |
Standard quantity per carton | 12pcs | |
Standard carton measurement | 485mm x 450mm x 260mm (0.057CBM per standard carton) | |
Standard carton gross weight | 23kg | |
Optional accessories | Scope probe, AC power adaptor |
21:22 UNI-T UT81BThis is my small personal review ot this meter.UT81B is declared as a kind of scopemeter - it is a multimeter with some basic oscilloscope functions. It can be either battery powered or it has also 6V/450mA DC adapter. It has opticaly sealed USB transfer, can measure DC V up to 1000V, AC up to 750V, resistance up to 40MOhm, frequency up to 10MHz (probably sinus), bandwidth for UT81B is 'only' 8MHz (UT81A only 2MHz - thats probably the difference) with 40MS/s giving resolution 100ns/div - 5s/div with 8bit ADC, capacitance 100uF, AC/DC current 10A.
Of course it has also a diode and continuity test. Inacurracy is overall around 1%. That's what documentation says.Few words about meter and it's usage:.
Its software is not fast, neither too slow - acceptable, but could be faster. 4xAA batterie included (Eastpower) lasted only few hours of usage, with 1.38V each the indicator was showing low power. Documentation is describing obvious things and contains a lot of words of warning that you do not have to try to shave with the meter. Not much of help., but it's printout is of good quality for 'Made in China'. I am missing e.g. The information on how meter behaves when there are batteries but you connect DC adaptor. IMHO it will deplete the batteries down to adaptor level as adaptors is giving 5.8+V, but a new alkaline batteries up to 6.32V.
Will see how long new Energiser batteries will go. The autoranging is bit confusing but as you touch the range button it will let you choose. So far good. Data that you save in meter you can recall even after you switch off and remove batteries. Most troubles I had with trigger functionality. The bad thing here is that if you select one shot measurment, whenever meter goes to hold mode, you can not change anything on the screen until you unhold, while immediately triggering makes you lost. You have to switch to 'auto' mode, then you can change the ranges, time base etc.
Again. The worst thing on the meter so far for me is, that it is leaking 50Hz (European 230V/50Hz mains) from the AC/DC adaptor up to 1-2Vef. That's really terrible. I have to find some solution for that. Meter is in the reality more thick than what it seems to look from pictures. It is quite a brick, while making a solid feeling.
The most of the bottom is of course occupied by batteries. From my feeling the meter is meant mainly for measuring of larger signals. It is hard to measure very small signals on let's say higher DC voltage as meter can shift the 0 down or up only 4divs - means eg.
Signal 10mVpp on the 4V you can measure on 1V resolution lowest. If you switch to 500mV your signal is out of the scope. Also the 50Hz leakage is making impossible to measure small signals even on batteries I still get lot of 50Hz noise. Attached probes are good, but I did not found a way how to disassemble them. If you cut or damage the wire, you're done and have to buy a new probes.