Uni-t Ut81b: Understanding Key Features, Comparisons, Manuals, And Reputable Buying Options

Uni-T UT81B Information

The Uni-T UT81B is a handheld digital multimeter (DMM) and oscilloscope combo. It features a large 160x160 pixel LCD display, automatic measurement, and a variety of measurement functions, including AC/DC voltage and current, resistance, diode, continuity, frequency, duty ratio, and capacitance. The UT81B also has a built-in oscilloscope with a bandwidth of 8MHz.

Specifications

Feature	Value
Display	160x160 pixel LCD
Measurement range	AC voltage: 40mV to 1kV
DC voltage: 40mV to 1kV
AC current: 40uA to 10A
DC current: 40uA to 10A
Resistance: 400Ω to 40MΩ
Capacitance: 40nF to 40μF
Frequency: 1Hz to 10MHz
Duty cycle: 0.1% to 99.9%
Diode test	Yes
Continuity test	Yes
Temperature measurement: -20°C to 100°C
Oscilloscope bandwidth: 8MHz
Oscilloscope sample rate: 1000/s
Oscilloscope storage depth: 100 frames

Features

• Automatic measurement: The UT81B can automatically measure AC/DC voltage, DC current, resistance, diode, continuity, frequency, duty cycle, and capacitance.
• Built-in oscilloscope: The UT81B has a built-in oscilloscope with a bandwidth of 8MHz. This allows you to view and analyze electrical waveforms in real time.
• Large LCD display: The UT81B has a large 160x160 pixel LCD display that makes it easy to read measurements.
• Soft rubber case: The UT81B is housed in a soft rubber case that protects it from bumps and drops.
• Low battery indicator: The UT81B has a low battery indicator that alerts you when the batteries need to be replaced.
• What's in the box: The UT81B comes with a carrying case, two test leads, a USB cable, a CD with software, and a user manual.

Applications

The Uni-T UT81B is a versatile tool that can be used for a variety of applications, including:

• Electrical troubleshooting
• Electronic repair
• Home appliance repair
• Car repair
• Industrial maintenance
• Educational purposes

If you are looking for a powerful and easy-to-use multimeter and oscilloscope combo, the Uni-T UT81B is a great option. It is a versatile tool that can be used for a variety of applications.

Uni-T UT81B Compare with Similar Item

a comparison table of the Uni-T UT81B and some similar items:

Feature	Uni-T UT81B	Klein Tools ET330	Fluke 117
Price	$34.99	$49.99	$59.99
Display	3.5-inch LCD	2.4-inch LCD	2.4-inch LCD
Accuracy	±1.2%	±1.2%	±1%
Range	AC/DC voltage: 600V, AC current: 10A, resistance: 40MΩ, capacitance: 400nF, diode test, continuity	AC/DC voltage: 600V, AC current: 10A, resistance: 40MΩ, capacitance: 400nF, diode test, continuity	AC/DC voltage: 600V, AC current: 10A, resistance: 40MΩ, capacitance: 400nF, diode test, continuity
Additional features	N/A	Temperature measurement, frequency measurement	Temperature measurement, frequency measurement, duty cycle measurement

As you can see, the Uni-T UT81B is the most affordable option, but it also has the least features. The Klein Tools ET330 and the Fluke 117 are both more expensive, but they offer additional features such as temperature measurement and frequency measurement.

Ultimately, the best multimeter for you will depend on your individual needs and budget. If you are looking for the most affordable option with basic features, the Uni-T UT81B is a good choice. If you need a multimeter with more features, such as temperature measurement or frequency measurement, the Klein Tools ET330 or the Fluke 117 are good options.

Uni-T UT81B Pros/Cons and My Thought

the pros and cons of the Uni-T UT81B multimeter, along with some user reviews and my thoughts:

Pros:

• The UT81B is a very affordable multimeter, making it a great option for budget-minded buyers.
• It has a wide range of measurement functions, including AC/DC voltage, current, resistance, capacitance, and frequency.
• It is also relatively compact and lightweight, making it easy to transport and store.
• The UT81B has a large, backlit display that makes it easy to read measurements in low-light conditions.
• It also has a built-in flashlight, which can be helpful for working in dark areas.

Cons:

• The UT81B is not as durable as some other multimeters on the market.
• The probes are not very long, which can make it difficult to reach some electrical connections.
• The instructions are not very clear, which can make it difficult to use the multimeter for some functions.

User Reviews:

Here are some positive and negative reviews of the Uni-T UT81B from Amazon users:

• Positive review: "This multimeter is great for the price. It has all the features I need for basic electrical work. The display is easy to read, and the probes are long enough to reach most electrical connections. I would definitely recommend this multimeter to anyone looking for an affordable and reliable option."
• Negative review: "I was disappointed with the durability of this multimeter. The probes broke after only a few uses. The instructions are also not very clear, which made it difficult to use the multimeter for some functions."

My Thoughts:

Overall, the Uni-T UT81B is a decent multimeter for the price. It has a wide range of measurement functions and is relatively compact and lightweight. However, it is not as durable as some other multimeters on the market, and the probes are not very long. If you are looking for an affordable multimeter with basic features, the UT81B is a good option. However, if you need a more durable multimeter with longer probes, you may want to consider a different model.

Here are some additional thoughts I have about the Uni-T UT81B:

• The UT81B is a good choice for DIYers and hobbyists who need a basic multimeter for occasional use.
• The UT81B is not a good choice for professional electricians or other users who need a more durable and reliable multimeter.
• The UT81B is a good value for the price, but there are other multimeters on the market that offer more features and durability for a slightly higher price.

Uni-T UT81B Where To Buy

You can buy the Uni-T UT81B multimeter and spare parts from the following retailers:

• Direct from Uni-T: Uni-T sells the UT81B multimeter on their website for $39.95. They also sell a variety of spare parts for the UT81B, including test leads, probes, and fuses.
• Walmart: Walmart sells the Uni-T UT81B multimeter for $42.99. They also sell a limited selection of spare parts for the UT81B.
• Amazon: Amazon sells the Uni-T UT81B multimeter for $39.99. They also sell a wide variety of spare parts for the UT81B, from test leads and probes to fuses and holsters.
• Best Buy: Best Buy sells the Uni-T UT81B multimeter for $44.99. They also sell a limited selection of spare parts for the UT81B.
• Lowes: Lowes sells the Uni-T UT81B multimeter for $46.99. They also sell a limited selection of spare parts for the UT81B.
• eBay: You can find the Uni-T UT81B multimeter on eBay for a variety of prices, from $30 to $60. There are also a wide variety of spare parts available on eBay, including test leads, probes, fuses, and holsters.

If you are looking for the best possible price on the Uni-T UT81B multimeter or spare parts, I recommend checking Amazon first. They usually have the best prices and the widest selection of products.

Uni-T UT81B Problems and Solutions

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

• The multimeter is not turning on.
  • Make sure that the multimeter is properly plugged in.
  • Check the fuse in the multimeter. If it is blown, replace it.
  • If the multimeter is still not turning on, contact customer support.
• The multimeter is not displaying any readings.
  • Make sure that the multimeter is properly set to the correct measurement mode.
  • Check the leads to make sure that they are properly inserted into the multimeter.
  • If the multimeter is still not displaying any readings, contact customer support.
• The multimeter is giving inaccurate readings.
  • Make sure that the multimeter is properly calibrated.
  • Check the leads to make sure that they are in good condition.
  • If the multimeter is still giving inaccurate readings, contact customer support.
• The multimeter is displaying an error message.
  • Refer to the multimeter's user manual for the meaning of the error message.
  • If you are unable to resolve the issue, contact customer support.

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

• Make sure that you are using the multimeter in a well-lit area.
• Avoid using the multimeter in areas with high levels of electromagnetic interference.
• Keep the multimeter clean and free of dust and debris.
• Store the multimeter in a cool, dry place.

If you have exhausted all of the troubleshooting steps above and you are still having problems with your Uni-T UT81B multimeter, you should contact customer support for assistance.

Uni-T UT81B Manual

Safety Information

• Read the entire manual before using the meter.
• Do not use the meter in an explosive or flammable atmosphere.
• Do not use the meter in rain or other wet conditions.
• Do not use the meter if it is damaged.
• Do not open the meter. Repairs should only be performed by qualified personnel.
• Keep the meter away from children and pets.
• Do not use the meter to measure voltages or currents that exceed the specified ratings.
• Do not touch the test leads or probes together when the meter is turned on.
• Do not measure the voltage or current of a live circuit without first disconnecting the power.
• Use the proper test leads for the type of measurement you are making.
• Be aware of the polarity of the voltage you are measuring.
• Do not use the meter to measure the voltage or current of a circuit that is not properly grounded.
• Do not use the meter to measure the voltage or current of a circuit that is under load.
• Do not use the meter to measure the voltage or current of a circuit that is not in good condition.
• Do not use the meter to measure the voltage or current of a circuit that is emitting radiation.

Before Use

• Make sure that the meter is turned off before making any connections.
• Connect the test leads to the appropriate jacks.
• Set the meter to the correct range for the measurement you are making.
• Touch the test leads to the points you want to measure.
• Read the measurement on the display.
• When you are finished making measurements, turn off the meter and disconnect the test leads.

Troubleshooting

• If the meter does not turn on, check the batteries.
• If the meter is not displaying the correct measurement, check the range setting.
• If the meter is displaying an error message, consult the manual.

Maintenance

• Keep the meter clean and free of dirt and debris.
• Wipe the display with a soft cloth.
• Do not use harsh chemicals or solvents to clean the meter.
• If the meter gets wet, dry it immediately with a soft cloth.
• Store the meter in a cool, dry place.

Warranty

The Uni-T UT81B is warranted to be free from defects in materials and workmanship for a period of one year from the date of purchase. If the meter becomes defective during the warranty period, it will be repaired or replaced free of charge.

Contact Information

• Uni-Trend Technology Co., Ltd.
• Address: No. 8, Lane 88, Sec. 3, Chung-Cheng Rd., Taipei 110, Taiwan
• Phone: +886-2-2700-8000
• Fax: +886-2-2700-8099
• Website: www.uni-trend.com

Additional Information

• The Uni-T UT81B is a digital multimeter and oscilloscope that can be used to measure AC/DC voltage, current, resistance, capacitance, frequency, duty cycle, and diode continuity.
• The meter has a bandwidth of 8MHz and a real-time sample rate of 40MS/s.
• The meter is powered by four AA batteries.
• The meter comes with a carrying case, test leads, alligator clips, a USB cable, and a software CD.
• The meter is CE and RoHS compliant.