Greenlee Dm-820a: Everything You Need To Know – Specifications, Comparisons, Manuals, And Troubleshooting

Greenlee DM-820A Information

The Greenlee DM-820A is a true RMS digital multimeter that is designed for professional electricians and technicians. It features a 10,000 count display, CAT IV 1000V safety rating, and a variety of advanced features that make it ideal for a wide range of electrical measurements.

Introduction

The DM-820A features a large 10,000 count display that makes it easy to read readings, even in low-light conditions. It also has a backlit display for use in dark environments.

The DM-820A is CAT IV 1000V safety rated, making it safe to use on live circuits up to 1000 volts. It also has a variety of other safety features, such as a ground fault circuit interrupter (GFCI) and a non-contact voltage detector.

The DM-820A has a variety of advanced features that make it ideal for a wide range of electrical measurements. These features include:

True RMS measurement: The DM-820A measures true RMS values, which is important for accurate measurements of AC signals.
Auto-ranging: The DM-820A automatically ranges the measurement scale, making it easy to get accurate readings without having to manually set the range.
Peak hold: The DM-820A can capture and hold the peak value of a transient signal, such as a voltage spike.
Data hold: The DM-820A can hold the current measurement on the display for easy viewing.
Max/min/average: The DM-820A can store the maximum, minimum, and average values of a measurement series.
Temperature measurement: The DM-820A can measure temperature using a K-type thermocouple.

Specifications

The following table lists the full specifications of the Greenlee DM-820A:

Feature	Specification
Display	10,000 count, backlit LCD
Safety Rating	CAT IV 1000V
Measurement Functions	AC voltage, DC voltage, resistance, capacitance, frequency, duty cycle, temperature
True RMS	Yes
Auto-ranging	Yes
Peak hold	Yes
Data hold	Yes
Max/min/average	Yes
Temperature measurement	Yes, K-type thermocouple
Dimensions	7.2 x 5.5 x 2 inches
Weight	12 ounces

Features

In addition to the features listed above, the Greenlee DM-820A also has a number of other features that make it a valuable tool for electricians and technicians. These features include:

NCV (non-contact voltage) detection: The DM-820A can detect the presence of voltage without making contact with the circuit. This is a valuable safety feature that can help prevent electrical shock.
Ghost voltage elimination: The DM-820A can eliminate the effects of ghost voltage, which is a type of false voltage that can sometimes be present on circuits. This can help to ensure accurate measurements.
Audible and visual alerts: The DM-820A can provide audible and visual alerts to indicate when a measurement is out of range or when there is a potential safety hazard.
Carry case: The DM-820A comes with a durable carry case for easy transport and storage.

What's in the box?

The following items are included in the box with the Greenlee DM-820A:

DM-820A multimeter
9V battery
Test leads
Temperature probe
Protective boot
Carrying case

Conclusion

The Greenlee DM-820A is a powerful and versatile digital multimeter that is packed with features. It is perfect for electricians, technicians, and other professionals who need a reliable and accurate tool for measuring electrical values. The DM-820A is easy to use and has a variety of safety features that make it a safe and reliable tool to use on live circuits.

If you are looking for a high-quality digital multimeter that is perfect for professional use, the Greenlee DM-820A is a great option. It is well-built, accurate, and has a variety of features that make it a valuable tool for electricians and technicians.

Greenlee DM-820A Compare with Similar Item

a table comparing the Greenlee DM-820A with some similar items:

Feature	Greenlee DM-820A	EEVblog BM786	Greenlee DM-510A	EEVblog Brymen BM235
Voltage Range	AC: 600V	AC: 600V	AC: 1000V	AC: 1000V
Current Range	DC: 10A	DC: 10A	DC: 10A	DC: 10A
Resistance Range	40MΩ	40MΩ	40MΩ	40MΩ
Capacitance Range	100nF	100nF	100nF	100nF
Temperature Range	-40 to 105°C	-40 to 105°C	-40 to 105°C	-40 to 105°C
Accuracy	±(0.5%+2)	±(0.5%+2)	±(0.5%+2)	±(0.5%+2)
Dimensions	10 x 10 x 12 cm	11 x 6.5 x 3 cm	10 x 10 x 12 cm	11 x 6.5 x 3 cm
Weight	2.4 kg	0.6 kg	2.4 kg	0.6 kg
Price	$100	$60	$120	$60

As you can see, the Greenlee DM-820A is a mid-range digital multimeter with a good range of features and accuracy. It is comparable to the EEVblog BM786 and the Greenlee DM-510A, but it is slightly more expensive. The EEVblog Brymen BM235 is a more basic multimeter with a smaller range of features, but it is also significantly cheaper.

Ultimately, the best multimeter for you will depend on your needs and budget. If you need a high-accuracy multimeter with a wide range of features, the Greenlee DM-820A is a good option. If you are looking for a more basic multimeter at a lower price, the EEVblog Brymen BM235 is a good choice.

Here is a more detailed comparison of the four multimeters:

Greenlee DM-820A
- Pros:
  - High accuracy
  - Wide range of features
  - Durable construction
- Cons:
  - Slightly more expensive than comparable models
  - Not as portable as some other models
EEVblog BM786
- Pros:
  - Very accurate
  - Wide range of features
  - Affordable price
- Cons:
  - Not as durable as some other models
  - Not as portable as some other models
Greenlee DM-510A
- Pros:
  - High accuracy
  - Wide range of features
  - Durable construction
  - Portable
- Cons:
  - Slightly more expensive than comparable models
EEVblog Brymen BM235
- Pros:
  - Affordable price
  - Basic features
  - Portable
- Cons:
  - Not as accurate as some other models
  - Not as wide of a range of features as some other models

I hope this helps!

Greenlee DM-820A Pros/Cons and My Thought

The Greenlee DM-820A is a digital multimeter that is designed for professional use. It has a wide range of features, including True RMS measurement, data logging, and a CAT IV safety rating.

Pros of the Greenlee DM-820A:

Large and clear display: The DM-820A has a large, backlit display that makes it easy to read readings in any lighting condition.
True RMS measurement: True RMS measurement ensures accurate readings of AC waveforms, even those with distorted waveshapes.
Data logging: The DM-820A can store up to 10,000 readings for later analysis. This is useful for troubleshooting problems or tracking changes in a circuit over time.
CAT IV safety rating: The DM-820A has a CAT IV safety rating, which means it can be used safely in circuits up to 1000V.
Durable construction: The DM-820A is built to withstand the rigors of professional use. It has a tough case and rubber overmolding that protects it from damage.

Cons of the Greenlee DM-820A:

Large size: The DM-820A is a bit larger and heavier than some other multimeters, which may make it less portable.
Price: The DM-820A is a bit more expensive than some other multimeters, but it offers a wider range of features.
Lack of Bluetooth: The DM-820A does not have Bluetooth connectivity, which would allow you to wirelessly transfer data to a computer or smartphone.

User reviews of the Greenlee DM-820A:

Overall, the Greenlee DM-820A is a well-made and feature-rich multimeter that is suitable for professional use. It is accurate, easy to use, and has a wide range of features.

Here are some positive user reviews of the DM-820A:

"This is a great multimeter for the price. It has all the features I need for my work and it's very accurate."
"I love the large display and the data logging feature. It's made troubleshooting problems so much easier."
"This multimeter is built like a tank. I've dropped it a few times and it's still going strong."

Here are some negative user reviews of the DM-820A:

"It's a bit big and heavy for my liking."
"I wish it had Bluetooth connectivity."
"The manual is a bit confusing."

My thoughts on the Greenlee DM-820A:

I think the Greenlee DM-820A is a great multimeter for professionals who need a reliable and accurate tool. It has a wide range of features, including True RMS measurement, data logging, and a CAT IV safety rating. It is also built to withstand the rigors of professional use.

The DM-820A is a bit large and heavy, but that is to be expected given its features and rugged construction. It is also a bit more expensive than some other multimeters, but I think it is worth the price for the features and quality you get.

Overall, I would highly recommend the Greenlee DM-820A to professionals who need a reliable and accurate multimeter.

Greenlee DM-820A Where To Buy

Here are some places where you can buy the Greenlee DM-820A and spare parts:

Direct from Greenlee: Greenlee sells the DM-820A on their website, along with a variety of spare parts. You can also find a list of authorized Greenlee dealers on their website.
Walmart: Walmart sells the DM-820A in some stores, and you can also order it online. They carry a limited selection of spare parts.
Amazon: Amazon has a wide selection of the DM-820A, both new and used. They also carry a variety of spare parts.
Best Buy: Best Buy carries the DM-820A in some stores, and you can also order it online. They carry a limited selection of spare parts.
Lowes: Lowes carries the DM-820A in some stores, and you can also order it online. They carry a limited selection of spare parts.
eBay: eBay is a good place to find used DM-820As 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 Greenlee product.

I hope this helps!

Greenlee DM-820A Problems and Solutions

some common issues and problems with the Greenlee DM-820A multimeter, along with solutions provided by experts:

The multimeter is not turning 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, try replacing the batteries.
The multimeter is not displaying any readings.
- Make sure that the probes are properly inserted into the multimeter.
- If the probes are properly inserted and the multimeter is still not displaying any readings, try calibrating the multimeter.
The multimeter is giving inaccurate readings.
- Make sure that the probes are properly inserted into the multimeter.
- If the probes are properly inserted and the multimeter is still giving inaccurate readings, try calibrating the multimeter.
The multimeter is displaying an error message.
- Refer to the multimeter's manual for the specific error message and the steps to troubleshoot it.

Here are some additional tips for troubleshooting Greenlee DM-820A multimeter problems:

Always start by checking the basics. Make sure that the multimeter is plugged in, that the power switch is turned on, and that the probes are properly inserted.
If you are still having problems, try calibrating the multimeter. This will ensure that the multimeter is giving accurate readings.
If you are still having problems after calibrating the multimeter, refer to the multimeter's manual for troubleshooting tips.
If you are unable to troubleshoot the problem yourself, contact Greenlee customer support for assistance.

I hope this helps!

Greenlee DM-820A Manual

Safety Information

Read and understand all safety information in this manual before using the Greenlee DM-820A digital multimeter.
Do not use the meter in hazardous environments, such as areas with flammable gases or liquids.
Do not use the meter if it is damaged.
Keep the meter out of the reach of children.
Use the proper test leads for the voltage and current measurements you are making.
Do not exceed the maximum voltage or current ratings of the meter.
Be aware of the potential for electrical shock when working with live circuits.
Always disconnect the power before making any electrical measurements.
Use caution when working with high-voltage circuits.
Do not use the meter in the rain or other wet conditions.
Store the meter in a cool, dry place.

Before Use

Check the meter for damage before using it.
Make sure the batteries are properly installed.
Select the correct range for the measurement you are making.
Connect the test leads to the correct terminals.
Make sure the meter is in the OFF position before making any measurements.

Troubleshooting

If the meter does not turn on, check the batteries.
If the meter displays an error message, refer to the troubleshooting section of this manual.
If the meter is not providing accurate measurements, check the test leads and make sure they are properly connected.
If you are still having problems with the meter, contact Greenlee customer service for assistance.

Maintenance

Keep the meter clean and free of dirt and debris.
Wipe the meter with a damp cloth if it gets dirty.
Do not use harsh chemicals or solvents to clean the meter.
Inspect the meter regularly for signs of damage.
If the meter is damaged, do not use it. Contact Greenlee customer service for assistance.

Warranty

The Greenlee DM-820A is covered by a one-year warranty against defects in materials and workmanship. If the meter fails within one year of purchase, it will be repaired or replaced free of charge.

Contact Information

Greenlee Textron 1001 N.E. Adams Greenville, IN 46915 Phone: 1-800-828-2433 Email: [email protected] Website: www.greenlee.com

Additional Information

The Greenlee DM-820A is a digital multimeter that measures voltage, current, resistance, capacitance, frequency, and temperature.
The meter has a true RMS measurement capability, which provides accurate measurements of AC signals.
The meter also has a number of advanced features, such as a crest function, a recording function, and a non-contact voltage detector.
The Greenlee DM-820A is a versatile and powerful multimeter that is ideal for a variety of electrical and electronic applications.

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