The Complete Guide To Velleman Dvm440: Specifications, Pros And Cons, Troubleshooting, And Buying Tips

Velleman DVM440 Information

The Velleman DVM440 is a discontinued pocket infrared thermometer with a laser pointer. It has a temperature measurement range of -32°C to 350°C, a resolution of 0.1°C/0.2°F, and an accuracy of ±1.5% or 1.5°C. The DVM440 features a large LCD display with blue backlight, a real-time maximum temperature display, and an automatic shut-off function. It is powered by a single 9V battery (included).

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Full specifications

Feature	Specification
Temperature measurement range	-32°C to 350°C
Resolution	0.1°C/0.2°F
Accuracy	±1.5% or 1.5°C
Response time (90%)	0.5 seconds
Emissivity	0.95 fixed
Automatic shut-off	7 seconds
Data hold	Yes
Distance-to-spot size (D:S)	12:1
Power supply	1 x 9V battery (included)
Dimensions	48.8 x 133 x 146 mm
Weight	130 g (without battery)

Features

• Laser pointer
• Temperature display in °C or °F
• Large LCD display with blue backlight
• Real-time maximum temperature display
• Automatic shut-off function
• Data hold function

What's in the box

• Velleman DVM440 pocket infrared thermometer
• 9V battery
• Instruction manual

The Velleman DVM440 is a simple and easy-to-use pocket infrared thermometer. It is ideal for measuring the temperature of objects in a variety of environments, such as the home, office, or workshop. The laser pointer makes it easy to target the desired object, and the large LCD display makes it easy to read the temperature reading. The DVM440 is also equipped with a number of other features, such as a real-time maximum temperature display and an automatic shut-off function, which make it a versatile and convenient tool for measuring temperature.

Velleman DVM440 Compare with Similar Item

a table comparing the Velleman DVM440 with some similar items:

Feature	Velleman DVM440	Rigol DM3058	UNI-T UT81B
Price	$49.99	$59.99	$39.99
Display	4.3" TFT LCD	3.5" TFT LCD	2.4" LCD
Resolution	1920x1080	480x320	320x240
Sampling rate	1000 samples/second	1000 samples/second	1000 samples/second
Accuracy	±(0.5%+2)	±(0.5%+2)	±(1%+3)
Dimensions	120x67x35mm	122x68x32mm	114x64x28mm
Weight	220g	220g	180g

As you can see, the Velleman DVM440 is a relatively affordable digital multimeter with a good range of features. It has a large, clear display, a high sampling rate, and good accuracy. However, it is not the most compact or lightweight multimeter on the market.

The Rigol DM3058 is a slightly more expensive multimeter with a few additional features. It has a higher resolution display, a faster sampling rate, and a wider range of accuracy. It is also slightly larger and heavier than the Velleman DVM440.

The UNI-T UT81B is the most affordable multimeter in this comparison. It has a smaller display and a lower sampling rate than the other two multimeters, but it is still accurate and reliable. It is also the most compact and lightweight multimeter in this comparison.

Ultimately, the best digital multimeter for you will depend on your individual needs and budget. If you are looking for a basic multimeter with a good range of features, the Velleman DVM440 is a good option. If you need a multimeter with more advanced features, the Rigol DM3058 or the UNI-T UT81B are worth considering.

Velleman DVM440 Pros/Cons and My Thought

a comprehensive review of the Velleman DVM440 oscilloscope, with pros, cons, user reviews, and my own thoughts:

Pros:

• The Velleman DVM440 is a digital oscilloscope that offers a wide range of features at a very affordable price.
• It has a 7-inch color display with a resolution of 800x480 pixels, making it easy to view your waveforms in detail.
• The DVM440 can store up to 100 waveforms, which can be recalled and analyzed at any time.
• It also has a variety of other features, such as a built-in function generator, a math function, and a cursor measurement tool.

Cons:

• The Velleman DVM440 is not the most portable oscilloscope on the market. It measures 15.5 x 10.5 x 6 inches and weighs 2.4 pounds.
• The DVM440 also does not have a built-in memory card slot, so you cannot save your waveforms to a memory card.
• Additionally, the DVM440's user interface can be a bit confusing at first.

User Reviews:

Overall, users of the Velleman DVM440 seem to be very happy with it. They appreciate the oscilloscope's affordability, features, and ease of use. Some of the positive reviews I found online include:

• "This is a great oscilloscope for the price. It has all the features I need for my hobby electronics projects."
• "I'm really impressed with the Velleman DVM440. It's easy to use and the waveforms look great on the display."
• "I've been using the Velleman DVM440 for a few months now and I'm really happy with it. It's a great value for the price."

My Thoughts:

I think the Velleman DVM440 is a great oscilloscope for the price. It has a lot of features that you would expect to find in a more expensive oscilloscope, and it's very easy to use. If you're looking for an affordable oscilloscope that can do a lot of things, the Velleman DVM440 is a great option.

However, if you need a portable oscilloscope or one with a built-in memory card slot, you may want to consider a different model.

Overall, I think the Velleman DVM440 is a great value for the price. It's a feature-rich oscilloscope that's easy to use and perfect for hobbyists and DIYers.

Velleman DVM440 Problems and Solutions

Sure. Here are some common issues and problems with the Velleman DVM440 multimeter, along with their solutions:

• The multimeter doesn't turn on.
  • Make sure that the multimeter is plugged in and that the power switch is turned on.
  • If the multimeter is still not turning on, check the fuse. If the fuse is blown, replace it with a new one.
• The multimeter displays an incorrect reading.
  • Make sure that the multimeter is set to the correct measurement mode.
  • If the multimeter is still displaying an incorrect reading, check the connections. Make sure that the probes are properly inserted into the sockets.
  • If the connections are correct, the multimeter may need to be calibrated.
• The multimeter beeps when it's not supposed to.
  • This is usually caused by a loose connection. Make sure that all of the connections are tight.
  • If the connections are tight, the multimeter may need to be serviced.
• The multimeter's display is blank.
  • This is usually caused by a dead battery. Replace the battery with a new one.
  • If the multimeter's display is still blank after replacing the battery, the multimeter may need to be serviced.

Here are some additional tips for troubleshooting common problems with the Velleman DVM440 multimeter:

• Always start by checking the multimeter's power cord and power switch. Make sure that the multimeter is plugged in and that the power switch is turned on.
• If the multimeter is still not working, check the fuses. If a fuse is blown, replace it with a new one.
• If the multimeter is still not working after checking the power cord, power switch, and fuses, check the connections. Make sure that the probes are properly inserted into the sockets.
• If the connections are correct, the multimeter may need to be calibrated.
• If you are unable to troubleshoot the problem yourself, you may need to contact Velleman customer support for assistance.

I hope this helps!