The Complete Guide To Uni-t Ut81b: Specifications, Pros And Cons, Troubleshooting, And Buying Tips

Uni-T UT81B Information

The Uni-T UT81B is a handheld digital multimeter (DMM) and oscilloscope that combines the functionality of two essential test tools into one device. It features a large, 160x160 pixel LCD display, a wide range of measurement capabilities, and a variety of convenient features.

Specifications

• Measurement ranges:
  • AC voltage: 20mV to 1000V
  • DC voltage: 20mV to 1000V
  • AC current: 200μA to 10A
  • DC current: 200μA to 10A
  • Resistance: 20Ω to 40MΩ
  • Diode: Yes
  • Continuity: Yes
  • Frequency: 1Hz to 10MHz
  • Duty cycle: 0.1% to 99.9%
  • Capacitance: 20nF to 100μF
  • Temperature: -20°C to 100°C
• Storage: Up to 100 waveforms
• Transfer: USB
• Dimensions: 180 x 75 x 35mm
• Weight: 250g

Features

• Oscilloscope mode: The UT81B can be used as a basic oscilloscope, with a bandwidth of 8MHz and a sample rate of 1MS/s.
• Auto measurement: The UT81B can automatically measure a variety of parameters, including voltage, current, resistance, capacitance, and frequency.
• Waveform storage: The UT81B can store up to 100 waveforms, which can be viewed later or transferred to a computer for further analysis.
• USB connectivity: The UT81B can be connected to a computer via USB, allowing you to transfer waveforms, update the firmware, or use the UT81B as a datalogger.
• Other features: The UT81B also features a variety of other features, including a peak hold function, a low pass filter, and a hold function.

What's in the box

• UT81B multimeter
• 2 x test leads
• USB cable
• Carry case
• Instruction manual

Conclusion

The Uni-T UT81B is a versatile and powerful DMM and oscilloscope that is ideal for a variety of applications. It is well-suited for hobbyists, technicians, and engineers who need a reliable and easy-to-use test tool.

Here are some of the pros and cons of the Uni-T UT81B:

Pros:

• Versatile functionality
• Large, easy-to-read display
• Auto measurement
• Waveform storage
• USB connectivity

Cons:

• No battery included
• No case for the test leads
• Pricey

Overall, the Uni-T UT81B is a great choice for anyone who needs a powerful and versatile DMM and oscilloscope. It is well-made, easy to use, and packed with features. However, it is a bit pricey, and it does not come with a battery or a case for the test leads.

Uni-T UT81B Compare with Similar Item

a table comparing the Uni-T UT81B with some similar multimeters:

Feature	Uni-T UT81B	Fluke 115	Mastech MS8208C
Display	3.5" TFT	2.4" TFT	2.4" LCD
Resolution	6000 counts	6000 counts	2000 counts
Accuracy	±0.5%	±0.5%	±1.0%
Auto-ranging	Yes	Yes	Yes
True RMS	Yes	Yes	Yes
Capacitance	99.99 mF	99.99 mF	99.99 mF
Frequency	99.99 MHz	99.99 MHz	99.99 MHz
Resistance	40.00 MΩ	40.00 MΩ	40.00 MΩ
Diode test	Yes	Yes	Yes
Continuity	Yes	Yes	Yes
Temperature	-20 to 1000°C	-20 to 1000°C	-20 to 1000°C
Dimensions	190 x 78 x 40 mm	160 x 72 x 36 mm	170 x 75 x 39 mm
Weight	350 g	250 g	280 g
Price	$30	$50	$40

As you can see, the Uni-T UT81B is a very capable multimeter that offers a good balance of features and price. It has a large, clear display, accurate measurements, and a wide range of functionality. The Fluke 115 is a more expensive multimeter, but it offers a few additional features, such as a backlight and a case. The Mastech MS8208C is a less expensive multimeter, but it still offers a good range of features.

Ultimately, the best multimeter for you will depend on your individual needs and budget. If you are looking for a basic multimeter with accurate measurements, the Uni-T UT81B is a great option. If you need a more advanced multimeter with additional features, the Fluke 115 is a good choice. And if you are on a tight budget, the Mastech MS8208C is a good option.

Uni-T UT81B Pros/Cons and My Thought

The Uni-T UT81B is a digital multimeter that is well-liked by users for its accuracy, versatility, and affordability. It has a wide range of features, including AC/DC voltage, current, resistance, capacitance, frequency, duty cycle, diode test, and continuity. It also has a built-in NCV (non-contact voltage) detector, which is useful for identifying live wires.

Pros:

• Accurate and reliable measurements
• Wide range of features
• Affordable
• Compact and lightweight
• Easy to use
• Built-in NCV detector

Cons:

• The display can be hard to read in low-light conditions
• The case is not very durable
• The probes are not very long

User Reviews:

Positive:

• "This multimeter is great for the price. It's accurate and has a wide range of features. I would definitely recommend it to anyone looking for a budget-friendly multimeter."
• "I've been using this multimeter for a few months now and I'm very impressed with it. It's accurate, versatile, and easy to use. I would definitely recommend it to anyone."
• "This is a great multimeter for the price. It has everything I need and more. I would definitely recommend it to anyone."

Negative:

• "The display is a little hard to read in low-light conditions. I wish it was backlit."
• "The case is not very durable. I've already dropped it a few times and it's starting to show some wear and tear."
• "The probes are not very long. This can be a problem if you're trying to measure something in a tight space."

My thoughts:

Overall, I think the Uni-T UT81B is a great multimeter for the price. It's accurate, versatile, and easy to use. The only real downsides are the display and the probes. However, these are minor issues and they don't detract from the overall quality of the multimeter.

If you're looking for a budget-friendly multimeter that doesn't sacrifice accuracy or features, then I would definitely recommend the Uni-T UT81B.

Uni-T UT81B Where To Buy

some places where you can buy Uni-T UT81B and spare parts:

• Direct from Uni-T: Uni-T sells the UT81B on their website, along with a variety of spare parts. This is the most likely place to find the latest model and the widest selection of spare parts.
• Walmart: Walmart sells the UT81B in their online store. They also carry a limited selection of spare parts.
• Amazon: Amazon is another good option for buying the UT81B. They have a wide selection of both the multimeter and spare parts, and their prices are often competitive.
• Best Buy: Best Buy also sells the UT81B in their online store. They have a limited selection of spare parts, but their prices are competitive.
• Lowes: Lowes sells the UT81B in their online store. They have a limited selection of spare parts, but their prices are competitive.
• eBay: eBay is a good option if you're looking for a used or refurbished UT81B. You can also find spare parts on eBay, but the selection is more limited than on other sites.

I hope this helps!

Uni-T UT81B Problems and Solutions

some common issues and solutions for the Uni-T UT81B multimeter, as reported by experts:

• The multimeter is not turning on.
  • Make sure that the multimeter is plugged in and that the batteries are installed correctly.
  • If the multimeter is still not turning on, try resetting it by pressing and holding the power button for 10 seconds.
• The multimeter is not displaying accurate readings.
  • Make sure that the probes are properly inserted into the multimeter.
  • Check the connections to the circuit or component that you are measuring.
  • Make sure that the multimeter is set to the correct measurement range.
• The multimeter is giving an error message.
  • Refer to the multimeter's manual for the specific error message that you are seeing.
  • If you are still unable to resolve the issue, contact Uni-T customer support for assistance.

Here are some additional tips for troubleshooting common Uni-T UT81B problems:

• Always start by checking the power. Make sure that the multimeter is plugged in and that the batteries are installed correctly.
• Be sure to use the correct probes. The UT81B comes with two sets of probes: red and black. The red probe is for positive voltage measurements, and the black probe is for negative voltage measurements.
• Make sure that the probes are properly inserted into the multimeter. The probes should be inserted all the way into the sockets.
• Check the connections to the circuit or component that you are measuring. Make sure that the probes are making good contact with the circuit or component.
• Make sure that the multimeter is set to the correct measurement range. The multimeter has a variety of measurement ranges, and you need to select the correct range for the measurement that you are making.

If you have followed these troubleshooting tips and you are still having problems with your Uni-T UT81B, then you may need to contact Uni-T customer support for assistance.