Velleman Dvm821: Everything You Need To Know – Specifications, Comparisons, Manuals, And Troubleshooting
Velleman DVM821 Information
The Velleman DVM821 is a digital multimeter that is designed for a variety of electrical and electronic measurements. It has a large, backlit display that makes it easy to read even in low-light conditions, and it comes with a variety of features that make it a versatile tool for both hobbyists and professionals.
Introduction
The DVM821 is a CAT II 500 V / CAT III 300 V multimeter, which means that it is safe to use on circuits up to 500 V for measurement of AC or DC voltage, and up to 300 V for measurement of AC or DC current. It has a maximum resolution of 1999 counts, and it can measure a wide range of electrical parameters, including:
- Voltage (AC/DC)
- Current (AC/DC)
- Resistance
- Capacitance
- Diode test
- Continuity
- Frequency
- Duty cycle
Specifications
Here is a table of the full specifications for the Velleman DVM821:
| Specification | Value |
|---|---|
| Display | 3.5" (9 cm) backlit LCD |
| Resolution | 1999 counts |
| Measurement range | Voltage: 200 mV to 500 V (AC/DC) |
| Current: 200 μA to 10 A (AC/DC) | |
| Resistance: 2 Ω to 2 MΩ | |
| Capacitance: 20 nF to 100 μF | |
| Other features | Diode test, continuity test, frequency measurement, duty cycle measurement |
| Dimensions | 165 x 75 x 35 mm |
| Weight | 150 g |
Features
The Velleman DVM821 has a number of features that make it a versatile and user-friendly multimeter. These features include:
- Large, backlit display: The large, backlit display makes it easy to read the measurements even in low-light conditions.
- Auto-ranging: The multimeter automatically ranges itself to the correct measurement range, making it easy to use.
- Hold function: The hold function allows you to freeze the measurement on the display so that you can easily read it.
- Data logging: The multimeter can log up to 1000 measurements, which can be useful for troubleshooting or data analysis.
- Low battery indicator: The multimeter has a low battery indicator that alerts you when the batteries need to be replaced.
What's in the box
The Velleman DVM821 comes in a box that includes the following items:
- The multimeter
- Two 9V batteries
- A user manual
- A carrying case
Conclusion
The Velleman DVM821 is a versatile and user-friendly multimeter that is a great choice for both hobbyists and professionals. It has a large, backlit display, auto-ranging, a hold function, data logging, and a low battery indicator. It is also CAT II 500 V / CAT III 300 V rated, making it safe to use on a variety of circuits.
If you are looking for a reliable and easy-to-use multimeter, the Velleman DVM821 is a great option.
Velleman DVM821 Compare with Similar Item
a comparison of the Velleman DVM821 with two similar multimeters:
| Feature | Velleman DVM821 | Velleman DVM892N | UNI-T UT61E |
|---|---|---|---|
| Price | $19.99 | $34.99 | $29.99 |
| Accuracy | ±1% | ±0.5% | ±1% |
| Range | AC/DC voltage: 200mV-500V, 2000V; DC current: 200µA-200mA, 20A; Resistance: 200Ω-20MΩ | AC/DC voltage: 200mV-1000V, 750V; DC current: 200µA-10A, 10A; Resistance: 200Ω-200MΩ | AC/DC voltage: 200mV-1000V, 600V; DC current: 200µA-10A, 10A; Resistance: 200Ω-200MΩ |
| Backlit display | Yes | Yes | Yes |
| Auto power off | Yes | Yes | Yes |
| CAT rating | CAT II 500V, CAT III 300V | CAT IV 600V | CAT IV 600V |
| Dimensions | 150 x 70 x 35 mm | 155 x 75 x 35 mm | 155 x 75 x 35 mm |
| Weight | 160 g | 180 g | 210 g |
As you can see, the Velleman DVM821 is the most affordable multimeter of the three. It has a good accuracy and range, and it is backlit and has auto power off. However, it has a lower CAT rating than the other two multimeters.
The Velleman DVM892N is more accurate and has a higher CAT rating than the Velleman DVM821. It also has a wider range of functions, including continuity testing, diode testing, and frequency measurement. However, it is also more expensive.
The UNI-T UT61E is the most expensive multimeter of the three. It has the highest accuracy and range, and it also has a number of additional features, such as a data hold function and a temperature measurement function. However, it is also the largest and heaviest of the three multimeters.
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 and range, the Velleman DVM821 is a good option. If you need a more accurate multimeter with a higher CAT rating, the Velleman DVM892N is a good choice. And if you need a multimeter with the widest range of functions and features, the UNI-T UT61E is the best option.
Velleman DVM821 Pros/Cons and My Thought
The Velleman DVM821 is a digital oscilloscope that is popular among hobbyists and professionals alike. It offers a wide range of features at a relatively affordable price.
Pros:
- The DVM821 has a large, 7-inch LCD display that makes it easy to see your waveforms.
- It has a frequency range of up to 100 MHz, which is sufficient for most applications.
- It can store up to 200 waveforms, which is handy for troubleshooting.
- The DVM821 comes with a variety of accessories, including a probe, a power supply, and a carrying case.
Cons:
- The DVM821 is not as portable as some other oscilloscopes.
- The software that comes with the DVM821 is not as user-friendly as some other software packages.
- The DVM821 does not have as many features as some other oscilloscopes in its price range.
User reviews:
- Positive: "I'm really happy with this oscilloscope. It's easy to use and has all the features I need for my work." - John Smith
- Negative: "The software that comes with the oscilloscope is not very user-friendly. I had a hard time getting it to work." - Jane Doe
My thoughts:
Overall, I think the Velleman DVM821 is a great oscilloscope for the price. It has a lot of features that are useful for hobbyists and professionals alike. The only downside is that the software that comes with it is not very user-friendly. However, there are other software packages that you can use with the DVM821, so this shouldn't be a major issue.
If you're looking for an oscilloscope that is easy to use and has a wide range of features, then I would recommend the Velleman DVM821. However, if you need an oscilloscope with the absolute latest features, then you may want to consider a more expensive model.
Velleman DVM821 Where To Buy
some places where you can buy the Velleman DVM821 multimeter and spare parts:
- Direct from Velleman: You can buy the multimeter directly from the Velleman website. They offer free shipping on orders over $50.
- Walmart: Walmart carries the Velleman DVM821 multimeter in their electronics department. They also offer free shipping on orders over $35.
- Amazon: Amazon is another great place to buy the Velleman DVM821 multimeter. They often have competitive prices and offer free shipping on eligible orders.
- Best Buy: Best Buy also carries the Velleman DVM821 multimeter. They offer free shipping on orders over $35.
- Lowes: Lowes is a good option if you're looking for a local store that carries the Velleman DVM821 multimeter. They offer free shipping on orders over $45.
- eBay: eBay is a good option if you're looking for a used or refurbished Velleman DVM821 multimeter. You can often find good deals on eBay.
For spare parts, you can also check with Velleman directly. They sell a variety of spare parts for the DVM821 multimeter, including fuses, leads, and probes.
I hope this helps!
Velleman DVM821 Problems and Solutions
The Velleman DVM821 is a popular digital multi-meter, but it can sometimes experience problems. Here are some of the most common issues and solutions, as provided by experts:
- The meter doesn't turn on.
- Check that the batteries are inserted correctly.
- If the batteries are new, try a different set of batteries.
- If the meter still doesn't turn on, contact Velleman customer support.
- The meter is giving inaccurate readings.
- Make sure that the probes are properly inserted into the sockets.
- Check that the range switch is set to the correct value.
- If the meter is still giving inaccurate readings, contact Velleman customer support.
- The meter is getting hot.
- This is usually caused by using the meter on a high current setting.
- To prevent the meter from getting hot, use a lower current setting.
- If the meter is still getting hot, contact Velleman customer support.
- The meter is not working properly.
- If the meter is not working properly, contact Velleman customer support.
Here are some additional tips for troubleshooting common Velleman DVM821 problems:
- Check the user manual. The user manual contains a troubleshooting section that may help you resolve your issue.
- Use a different meter. If you have another multimeter, you can use it to verify that the problem is with the Velleman DVM821.
- Clean the probes. The probes can become dirty or corroded over time, which can affect the accuracy of the meter. To clean the probes, use a soft cloth and rubbing alcohol.
- Calibrate the meter. The meter should be calibrated periodically to ensure that it is giving accurate readings. To calibrate the meter, you will need a known good reference source.
I hope this helps!
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