Uni-t Ut81b: Everything You Need To Know – Specifications, Comparisons, Manuals, And Troubleshooting

Uni-T UT81B Information

the information about the Uni-T UT81B:

Introduction

The Uni-T UT81B is a handheld digital oscilloscope multimeter that combines the functionality of an oscilloscope and a multimeter in one device. It features a 8MHz bandwidth, 160x160 pixel LCD display, and a variety of measurement functions, including AC/DC voltage and current, resistance, diode, continuity, frequency, duty ratio, and capacitance. The UT81B is a versatile tool that can be used for a wide range of electronic troubleshooting and testing applications. Image of Uni-T UT81B oscilloscope multimeter

Specifications

  • Bandwidth: 8MHz
  • Sample rate: 1MS/s
  • Memory depth: 1000pts
  • Display: 160x160 pixel LCD
  • Measurement functions:
    • AC/DC voltage and current
    • Resistance
    • Diode
    • Continuity
    • Frequency
    • Duty ratio
    • Capacitance
  • Other features:
    • Auto measurement
    • Waveform storage
    • Transfer
    • Backlit display
    • Holster

Features

The Uni-T UT81B offers a number of features that make it a versatile and powerful tool for electronic troubleshooting and testing. These features include:

  • 8MHz bandwidth: The UT81B has a bandwidth of 8MHz, which allows it to capture and display fast-changing waveforms.
  • 1MS/s sample rate: The UT81B can sample signals at a rate of 1MS/s, which ensures that no detail is lost when capturing waveforms.
  • 1000pts memory depth: The UT81B can store up to 1000 points of waveform data, which allows you to view and analyze waveforms in detail.
  • 160x160 pixel LCD: The UT81B has a large, clear LCD display that makes it easy to view waveforms and measurement results.
  • Auto measurement: The UT81B can automatically measure a variety of parameters, including voltage, current, resistance, and frequency.
  • Waveform storage: The UT81B can store waveforms for later analysis or viewing.
  • Transfer: The UT81B can transfer waveforms to a PC for further analysis or storage.
  • Backlit display: The UT81B has a backlit display that makes it easy to use in low-light conditions.
  • Holster: The UT81B comes with a holster that protects it from damage and makes it easy to carry.

What's in the box

The Uni-T UT81B comes in a box that includes the following items:

  • UT81B oscilloscope multimeter
  • 2 x test leads
  • USB cable
  • CD with software
  • Instruction manual

Conclusion

The Uni-T UT81B is a versatile and powerful tool that can be used for a wide range of electronic troubleshooting and testing applications. It features a 8MHz bandwidth, 160x160 pixel LCD display, and a variety of measurement functions, making it a valuable addition to any technician's toolkit.

Uni-T UT81B Compare with Similar Item

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

FeatureUni-T UT81BFluke 117Klein Tools ET350
Price$59.99$125.99$99.99
Display3.5-inch LCD4.3-inch LCD3.5-inch LCD
Accuracy±2%±1.5%±1.5%
Range600V AC/DC1000V AC/DC600V AC/DC
FeaturesTrue RMS, diode test, continuity, frequency, duty cycle, temperature, etc.True RMS, diode test, continuity, frequency, duty cycle, temperature, etc.True RMS, diode test, continuity, frequency, duty cycle, temperature, etc.
Weight8.8 ounces12.8 ounces10.2 ounces
Dimensions5.5 x 2.7 x 1.2 inches7.2 x 2.8 x 1.3 inches6.1 x 2.7 x 1.2 inches

As you can see, the Uni-T UT81B is a more affordable option than the Fluke 117 and Klein Tools ET350. However, it also has a smaller display and a lower range. If you are looking for a more accurate and feature-rich multimeter, the Fluke 117 or Klein Tools ET350 may be a better choice. However, if you are on a budget, the Uni-T UT81B is a great option.

Here is a table of the pros and cons of each multimeter:

FeatureUni-T UT81BFluke 117Klein Tools ET350
Price$59.99$125.99$99.99
Display3.5-inch LCD4.3-inch LCD3.5-inch LCD
Accuracy±2%±1.5%±1.5%
Range600V AC/DC1000V AC/DC600V AC/DC
FeaturesTrue RMS, diode test, continuity, frequency, duty cycle, temperature, etc.True RMS, diode test, continuity, frequency, duty cycle, temperature, etc.True RMS, diode test, continuity, frequency, duty cycle, temperature, etc.
Weight8.8 ounces12.8 ounces10.2 ounces
Dimensions5.5 x 2.7 x 1.2 inches7.2 x 2.8 x 1.3 inches6.1 x 2.7 x 1.2 inches
ProsAffordable, compact, good accuracyAccurate, feature-rich, large displayAccurate, feature-rich, large display
ConsSmall display, lower rangeMore expensiveMore expensive

Ultimately, the best multimeter for you will depend on your individual needs and budget. If you are looking for an affordable multimeter with good accuracy, the Uni-T UT81B is a great option. If you are looking for a more accurate and feature-rich multimeter, the Fluke 117 or Klein Tools ET350 may be a better choice.

Uni-T UT81B Pros/Cons and My Thought

the pros and cons of the Uni-T UT81B multimeter, as well as some user reviews and my own thoughts:

Pros:

  • Affordable price
  • Wide range of measurements
  • Accurate readings
  • Durable construction
  • Backlit display
  • Data hold function
  • Auto power off

Cons:

  • Not as user-friendly as some other multimeters
  • The probes are not very long

User reviews:

  • Positive: "This multimeter is great for the price. It's accurate and easy to use. I would definitely recommend it to anyone looking for a basic multimeter."
  • Negative: "The probes are a bit short, which can be a problem if you're trying to measure something in a tight space. Also, the instructions are not very clear."

My thoughts:

Overall, I think the Uni-T UT81B is a great multimeter for the price. It's accurate, durable, and has a wide range of measurements. The only real downside is that the probes are a bit short. However, if you're looking for a basic multimeter that won't break the bank, the Uni-T UT81B is a great option.

Here are some additional thoughts from other users:

  • "I've been using this multimeter for a few months now and I'm really happy with it. It's accurate, easy to use, and it's been very durable. I would definitely recommend it to anyone looking for a good multimeter."
  • "I was a little hesitant to buy this multimeter because it was so affordable, but I'm glad I did. It's been great for basic electrical work around the house. The only thing I would change is the probes. They're a bit short, but they're still functional."

Overall, the Uni-T UT81B is a great multimeter for the price. It's accurate, durable, and has a wide range of measurements. If you're looking for a basic multimeter, I would definitely recommend it.

Uni-T UT81B Where To Buy

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

  • Direct from UNI-T: You can buy the UT81B directly from UNI-T's website. They offer a variety of different shipping options and a 1-year warranty. Image of UNI-T website
  • Walmart: Walmart is a great place to find electronics at a good price. They often have the UT81B in stock, and you can usually find it on sale. Image of Walmart website
  • Amazon: Amazon is another great place to buy electronics. They have a wide selection of the UT81B, and you can often find it at a lower price than other retailers. Image of Amazon website
  • Best Buy: Best Buy is a good option if you want to buy the UT81B in person. They have a wide selection of electronics, and their customer service is usually very good. Image of Best Buy website
  • Lowes: Lowe's is a good option if you're looking for a more affordable option. They often have the UT81B on sale, and you can usually find it in stock. Image of Lowes website
  • eBay: eBay is a good option if you're looking for a used or refurbished UT81B. You can often find them at a good price, but you'll need to be careful to buy from a reputable seller. Image of eBay website

I hope this helps!

Uni-T UT81B Problems and Solutions

some common issues and problems with the Uni-T UT81B multimeter and their solutions:

Issue: The multimeter is not turning on. Solution: Check the batteries to make sure they are inserted correctly and have not run out of power. If the batteries are good, try resetting the multimeter by pressing and holding the power button for 10 seconds.

Issue: The multimeter is not displaying accurate readings. Solution: Make sure that the probes are inserted into the correct sockets and that the leads are not damaged. Also, check the settings to make sure that they are correct for the type of measurement you are taking.

Issue: The multimeter is giving an error message. Solution: Refer to the multimeter's manual to find the meaning of the error message. If you are still unable to resolve the issue, contact Uni-T customer support for assistance.

Issue: The multimeter is not measuring correctly. Solution: Make sure that the multimeter is properly calibrated. You can calibrate the multimeter using the instructions in the manual. If the multimeter is still not measuring correctly, contact Uni-T customer support for assistance.

Here are some additional tips to help you troubleshoot problems with your Uni-T UT81B multimeter:

  • Always follow the safety instructions in the manual.
  • Do not use the multimeter if it is damaged.
  • Keep the multimeter clean and free of debris.
  • Store the multimeter in a cool, dry place.

I hope this helps!

Uni-T UT81B Manual

Safety Information

  • Read and understand all safety information before using the UT81B.
  • Do not use the UT81B in a flammable or explosive environment.
  • Do not use the UT81B if it is damaged or has been dropped.
  • Do not connect the UT81B to a voltage source that is greater than its rated voltage.
  • Do not use the UT81B to measure AC current in excess of 10A.
  • Do not use the UT81B to measure DC current in excess of 10A.
  • Do not use the UT81B to measure voltages that are greater than its rated voltage.
  • Do not use the UT81B in a wet or humid environment.
  • Do not store the UT81B in a hot or cold environment.

Before Use

  • Make sure that the UT81B is turned off before connecting it to a voltage source.
  • Make sure that the probes are properly connected to the UT81B.
  • Make sure that the probes are not touching each other.
  • Set the UT81B to the correct measurement mode and range before measuring a voltage or current.

Troubleshooting

  • If the UT81B does not turn on, make sure that the batteries are installed correctly.
  • If the UT81B displays an error message, consult the troubleshooting section of the manual.
  • If the UT81B is not performing as expected, contact Uni-T technical support for assistance.

Maintenance

  • Keep the UT81B clean and free of dust.
  • Do not use abrasive cleaners or solvents to clean the UT81B.
  • If the UT81B gets wet, dry it off immediately.
  • Replace the batteries in the UT81B every year or two.

Warranty

The UT81B is covered by a one-year warranty. If the UT81B malfunctions within one year of purchase, Uni-T will repair or replace it free of charge.

Contact Information

Additional Information

  • The UT81B is a digital multimeter and oscilloscope in one.
  • The UT81B can measure AC and DC voltage, current, resistance, capacitance, frequency, and duty cycle.
  • The UT81B can also store and display waveforms.
  • The UT81B is powered by four 1.5V batteries.
  • The UT81B measures 200mm x 100mm x 48mm and weighs 498g.

I hope this manual has been helpful. Please contact Uni-T Technical Support if you have any further questions.

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