Extech 480823 Electromagnetic Field and Extremely Low Frequency Meter

by Extech Instruments

Product Description

Amazon.com Product Description

The Extech electromagnetic field and extremely low frequency meter has a large 1/2-inch LCD 3-1/2 digit display of electromagnetic field (EMF) level in milligauss or microtesla. It also comes with over range indication, and a sampling time of 2.5-times per second. The meter is 5.2x2.8x1-inches and comes complete with a 9-volt battery.

From the Manufacturer

The Extech 480823 EMF/ELF meter allows you to measure electromagnetic field radiation levels from fans, electrical appliances, wiring, and power lines. With a large 1/2-inch LCD display and a sampling time of 2.5 times per second, you can be assured of easy and accurate measurements. Readings available in both milligauss or micro Tesla. Battery included.

FEATURES

Large 1/2-inch LCD 3-1/2 digit display of electromagnetic field (EMF) level in milligauss or microTesla

Over range Indication

Sampling time of 2.5-times per second

Dimensions:5.2x2.8x1-inches (132x71x25mm); Weight: 6 oz (170g)

Complete with 9V battery.

SPECIFICATIONS

Range: 0.1mG to 199.9 milligauss (0.01 to 19.99 Tesla)

Frequency Bandwidth: 30 to 300 Hz (ELF frequency range)

Accuracy: ±(4% + 3digits) at 50-60 Hz

Number of Axes: Single axis

Product Details

Data Sheet [88kb PDF]

• Product Dimensions: 5.2 x 2.8 x 1 inches
• Shipping Weight: 8 ounces (View shipping rates and policies)
• Shipping: This item is also available for shipping to select countries outside the U.S.
• ASIN: B00023RXDC
• Item model number: 480823
• Average Customer Review: 4.5 out of 5 stars  See all reviews (28 customer reviews)
• Amazon Best Sellers Rank: #7,949 in Home Improvement (See Top 100 in Home Improvement)
  • #10 in Home Improvement > Electrical > Tools & Testers > Voltage Testers
  • #100 in Home Improvement > Power & Hand Tools > Measuring & Layout Tools > Scanners & Testers

Customer Reviews

Most Helpful Customer Reviews

68 of 70 people found the following review helpful:

4.0 out of 5 stars Good meter, lousy company., April 7, 2007

By 

Cano2 "Cano2" (Nowhere, Important) - See all my reviews

This review is from: Extech 480823 Electromagnetic Field and Extremely Low Frequency Meter (Tools & Home Improvement)

I like the meter, it found several hotspots in our house almost immediately. For that I consider it a priceless addition to the home to keep EMF levels under control. In addition, this meter prompted relocation of the kids beds away from a medium level EMF source (power meter on outside wall).

3 emails to the company for tech support remain unanswered, so don't count on any responses or support from this company. For that I am deducting 1 full star. When will these companies learn that they need to actually respond to their customer emails if they want continued business?

38 of 38 people found the following review helpful:

4.0 out of 5 stars Great meter, June 19, 2007

By 

Jan White "math_is_for_girls" (Portland, OR USA) - See all my reviews
(REAL NAME)   

This review is from: Extech 480823 Electromagnetic Field and Extremely Low Frequency Meter (Tools & Home Improvement)

This is a great little meter; solid and well-made. I use it for measuring EMF around the house. The reason I don't give it 5 stars is that it doesn't come with any information about how to use it - I have used an EMF meter before so I know what kind of fields to expect, the need to rotate the meter sometimes to catch the fields, and etc. But if I didn't already know this, it would be a problem. The meter also has an ELF setting and I don't know anything about that.

31 of 32 people found the following review helpful:

5.0 out of 5 stars Very good handheld Gauss meter, October 13, 2005

By 

NanoMan "Rao" (Nano Labs, USA) - See all my reviews

This review is from: Extech 480823 Electromagnetic Field and Extremely Low Frequency Meter (Tools & Home Improvement)

I used this gaussmeter to check the magnetic fields for installing a scanning electron microscope (SEM). Fields over 0.5 Gauss can cause problems in imaging using SEM. This meter was of very good help in the preliminary check for the fields. Some times this meter was too sensitive but it is OK (cross calibaration using a multi-thousand dollar gauss meter by a professional).

At 75$, I strongly recommend this product for testing any fields as low as 0.5 gauss.