Unveiling The Velleman Dvm821: Exploring Specifications, Manuals, Pros And Cons, And Common Problems

Velleman DVM821 Information

The Velleman DVM821 is a digital multimeter that is designed for basic electrical measurements. It has a CAT II 500V / CAT III 300V rating, making it safe to use on most electrical circuits. The multimeter has a 19-range display, with a maximum reading of 1999 counts. It can measure AC and DC voltage, current, resistance, capacitance, and frequency. The DVM821 also has a diode test function and a continuity checker.

Image of Velleman DVM821 multimeter

Specifications

Feature	Specification
Display	1999 counts
Ranges	AC Voltage: 200mV, 2V, 20V, 200V, 500V
DC Voltage: 200mV, 2V, 20V, 200V, 500V
Current: 200mA, 2A
Resistance: 200Ω, 2kΩ, 20kΩ, 200kΩ, 2MΩ
Capacitance: 20nF, 200nF, 2μF, 20μF, 200μF
Frequency: 20Hz, 200Hz, 2kHz, 20kHz, 200kHz
CAT rating	CAT II 500V / CAT III 300V
Dimensions	165 x 70 x 35 mm
Weight	160 g

Features

• 19-range display with 1999 counts
• CAT II 500V / CAT III 300V rating
• AC and DC voltage measurement
• Current measurement
• Resistance measurement
• Capacitance measurement
• Frequency measurement
• Diode test function
• Continuity checker

What's in the box

• Velleman DVM821 multimeter
• Instruction manual
• 9V battery
• Test leads

The Velleman DVM821 is a versatile and affordable multimeter that is perfect for basic electrical measurements. It is easy to use and has a wide range of features. If you are looking for a multimeter for home or hobby use, the DVM821 is a great option.

Here are some additional benefits of using the Velleman DVM821:

• It is a compact and lightweight multimeter, making it easy to carry around.
• The display is clear and easy to read.
• The buttons are large and easy to press.
• The multimeter comes with a variety of accessories, including test leads, a battery, and an instruction manual.

Overall, the Velleman DVM821 is a great value for the price. It is a reliable and easy-to-use multimeter that is perfect for basic electrical measurements.

Velleman DVM821 Compare with Similar Item

a table comparing the Velleman DVM821 with two similar items:

Feature	Velleman DVM821	Mastech MS8208	UNI-T UT61E
Price	$19.99	$24.99	$29.99
Power source	Battery powered	Battery powered	Battery powered
Accuracy	±0.5%	±0.5%	±1%
Display	3.5-digit LCD	3.5-digit LCD	3.5-digit LCD
Functions	DC voltage, AC voltage, resistance, capacitance, continuity, diode test	DC voltage, AC voltage, resistance, capacitance, continuity, diode test, frequency, duty cycle	DC voltage, AC voltage, resistance, capacitance, continuity, diode test, frequency, duty cycle, temperature
Dimensions	6.3 x 16 x 3.2 cm	6.7 x 16 x 3.8 cm	6.5 x 16 x 3.7 cm
Weight	130 g	140 g	150 g

As you can see, the Velleman DVM821 is the most affordable of the three meters, but it also has the lowest accuracy. The Mastech MS8208 is slightly more expensive, but it has the same accuracy as the Velleman DVM821 and also includes frequency and duty cycle measurements. The UNI-T UT61E is the most expensive of the three meters, but it has the highest accuracy and also includes temperature measurements.

Ultimately, the best digital multimeter for you will depend on your specific needs and budget. If you are looking for an affordable meter with basic functionality, the Velleman DVM821 is a good option. If you need a more accurate meter with additional features, the Mastech MS8208 or UNI-T UT61E are good choices.

Here is a summary of the pros and cons of each meter:

Velleman DVM821

• Pros: Affordable, easy to use
• Cons: Lowest accuracy of the three meters

Mastech MS8208

• Pros: Good accuracy, additional features (frequency, duty cycle)
• Cons: Slightly more expensive than the Velleman DVM821

UNI-T UT61E

• Pros: Highest accuracy of the three meters, additional features (temperature)
• Cons: Most expensive of the three meters

I hope this helps!

Velleman DVM821 Pros/Cons and My Thought

a 500-word overview of the Velleman DVM821, including pros, cons, user reviews, and my thoughts:

The Velleman DVM821 is a digital multimeter that is popular among hobbyists and electronics enthusiasts. It offers a wide range of features, including a large LCD display, auto-ranging, and a variety of measurement modes.

Pros:

• Large and easy-to-read LCD display
• Auto-ranging saves time and eliminates the need to manually select the measurement range
• Wide range of measurement modes, including AC/DC voltage, current, resistance, capacitance, and frequency
• Built-in diode test and continuity checker
• Backlit display for use in low-light conditions
• Durable and compact design

Cons:

• The price is a bit high compared to some other digital multimeters
• The manual is not very well-written
• The probes are not very long, which can make it difficult to reach some components

User Reviews:

Overall, the Velleman DVM821 has received positive reviews from users. Many people have praised the large display, the auto-ranging feature, and the wide range of measurement modes. Some users have also commented on the durability of the multimeter.

My Thoughts:

I think the Velleman DVM821 is a great digital multimeter for hobbyists and electronics enthusiasts. It offers a lot of features for the price, and it is well-built and easy to use. If you are looking for a multimeter that can do it all, the Velleman DVM821 is a great option.

Here are some additional thoughts on the Velleman DVM821:

• The auto-ranging feature is very convenient, and it saves a lot of time.
• The wide range of measurement modes is great for troubleshooting electronics.
• The built-in diode test and continuity checker are very useful.
• The backlit display is a nice feature for use in low-light conditions.
• The durable and compact design makes it easy to take the multimeter with you on the go.

Overall, I think the Velleman DVM821 is a great digital multimeter for the price. It is well-built, easy to use, and offers a wide range of features. I would definitely recommend it to hobbyists and electronics enthusiasts.

Velleman DVM821 Where To Buy

some places where you can buy Velleman DVM821 and spare parts:

• Direct: You can buy the Velleman DVM821 directly from the Velleman website. They have a wide selection of spare parts available as well.
• Walmart: Walmart carries the Velleman DVM821 in some stores, but you may have to order it online. They also carry a limited selection of spare parts.
• Amazon: Amazon is a great place to find the Velleman DVM821. They have a wide selection of units available, as well as a good selection of spare parts.
• Best Buy: Best Buy carries the Velleman DVM821 in some stores, but you may have to order it online. They also carry a limited selection of spare parts.
• Lowes: Lowes does not carry the Velleman DVM821, but they do carry a limited selection of spare parts.
• eBay: eBay is a great place to find used Velleman DVM821 units and spare parts. You can often find great deals on eBay, but be sure to do your research to make sure you are getting a genuine Velleman product.

I hope this helps!

Velleman DVM821 Problems and Solutions

Here are some common issues and problems with the Velleman DVM821 and their solutions:

• The laser does not turn on.
  • Check that the power supply is plugged in and turned on.
  • Check that the laser is properly connected to the power supply.
  • Check the laser's fuse. If it is blown, replace it.
• The laser is not cutting or engraving.
  • Check that the laser is properly focused.
  • Check that the laser is set to the correct power setting.
  • Check that the material you are cutting or engraving is compatible with the laser.
• The laser is making a humming noise.
  • This is normal. The laser is a high-powered device and will make some noise when it is in operation.
• The laser is smoking.
  • This is usually caused by overheating. Make sure that the laser is properly ventilated.
• The laser is not cutting or engraving as well as it used to.
  • The laser may need to be cleaned. Use a soft cloth to wipe away any dust or debris that may have accumulated on the laser head.

If you are still having problems with your Velleman DVM821, you can contact Velleman customer support for assistance.

Here are some additional tips for troubleshooting common problems with the Velleman DVM821:

• Check the laser's power settings. The laser's power settings can be adjusted to different materials and thicknesses. If the laser is not cutting or engraving properly, try adjusting the power settings.
• Use the correct type of material. Not all materials are compatible with the Velleman DVM821. Make sure that you are using the correct type of material for the project you are working on.
• Clean the laser head. The laser head can become dirty over time, which can affect the laser's performance. Clean the laser head with a soft cloth to remove any dust or debris.
• Ventilate the laser. The laser can produce fumes and heat, so it is important to ventilate the area where you are using the laser.

If you have followed these tips and you are still having problems with your Velleman DVM821, you may need to contact Velleman customer support for assistance.