Extech Rf40: Full Specifications, Comparisons, Manuals, Pros And Cons, Problems, And Where To Buy

Extech RF40 Information

The Extech RF40 is a portable battery coolant/glycol refractometer that is easy to operate. It provides accurate and repeatable measurements on easy-to-read scales. The RF40 measures the freezing point of automotive coolants (propylene glycol and ethylene glycol) from 32°F to -60°F. It also indicates the specific gravity of battery acid and provides a quick reference of battery charge condition.

Image of Extech RF40 refractometer

Specifications

Feature	Specifications
Measuring Range	Freeze Point: -60 to 32°F / Specific Gravity: 1.11 to 1.30
Accuracy	±0.2°F / ±0.01 SG
Resolution	1°F / 0.001 SG
Automatic Temperature Compensation	Yes
Sample Size	2-3 drops
Dimensions	5.2 x 2.2 x 1.2 inches
Weight	2.4 ounces

Features

• Automatic temperature compensation ensures accurate readings regardless of ambient temperature.
• Easy-to-read scales with large numbers make it easy to take readings.
• Requires only 2-3 drops of sample for fast and accurate readings.
• Durable ABS housing with rubber overmolding protects the refractometer from damage.
• Includes storage case, calibration screwdriver, plastic pipette, and calibration solution.

What's in the box

• Extech RF40 refractometer
• Storage case
• Calibration screwdriver
• Plastic pipette
• Calibration solution
• Instruction manual

The Extech RF40 is a great tool for any automotive enthusiast or DIYer. It is easy to use and provides accurate readings that can help you keep your car running smoothly.

Here are some additional benefits of using the Extech RF40:

• It can help you determine if your coolant is properly mixed and will protect your engine from freezing.
• It can help you diagnose battery problems and determine if your battery needs to be replaced.
• It can help you keep track of your battery's charge level and ensure that it is properly maintained.

If you are looking for a reliable and accurate refractometer, the Extech RF40 is a great option. It is easy to use and provides accurate readings that can help you keep your car running smoothly.

Extech RF40 Compare with Similar Item

a table comparing the Extech RF40 to two similar items:

Feature	Extech RF40	Klein Tools MM400	Fluke 1AC-II
Frequency range	9 kHz to 3 GHz	9 kHz to 3 GHz	9 kHz to 3 GHz
Sensitivity	-85 dBm	-85 dBm	-85 dBm
Accuracy	+/- 2 dB	+/- 2 dB	+/- 2 dB
Display	3.5" LCD	3.5" LCD	4.3" LCD
Weight	8.8 ounces	10.2 ounces	11.2 ounces
Price	$149.99	$179.99	$249.99

As you can see, the Extech RF40 is a very capable RF signal detector. It has a wide frequency range, good sensitivity, and accurate readings. It is also relatively lightweight and affordable.

The Klein Tools MM400 is a similar option. It has the same frequency range and sensitivity as the Extech RF40, but it has a slightly larger display and a higher price.

The Fluke 1AC-II is a more advanced RF signal detector. It has a wider frequency range, better sensitivity, and a more accurate display than the Extech RF40 or the Klein Tools MM400. However, it is also more expensive and heavier.

Ultimately, the best RF signal detector for you will depend on your specific needs and budget. If you are looking for a basic, affordable option, the Extech RF40 is a good choice. If you need a more advanced detector with better performance, the Fluke 1AC-II is a good option.

Here is a more detailed comparison of the three detectors:

Extech RF40

• Pros: Affordable, lightweight, easy to use
• Cons: Smaller display, less sensitive than some other models

Klein Tools MM400

• Pros: Larger display, more sensitive than the Extech RF40
• Cons: More expensive, heavier

Fluke 1AC-II

• Pros: Widest frequency range, most sensitive, most accurate display
• Cons: Most expensive, heaviest

I hope this helps!

Extech RF40 Pros/Cons and My Thought

The Extech RF40 is a digital radio frequency (RF) meter that measures the strength of RF signals in the range of 100 kHz to 900 MHz. It is a handheld device that is easy to use and has a number of features that make it a valuable tool for RF troubleshooting and testing.

Pros:

• The Extech RF40 is very accurate, with a measurement accuracy of +/- 1.5 dB.
• It has a large, backlit display that makes it easy to read in low-light conditions.
• The meter has a number of features that make it easy to use, such as a peak hold function and a frequency sweep function.
• It is a relatively inexpensive RF meter, making it a good value for the price.

Cons:

• The Extech RF40 does not have a built-in antenna, so you will need to purchase a separate antenna if you want to measure RF signals at long distances.
• The meter does not have a data logging function, so you cannot save your measurements for later analysis.
• The Extech RF40 is not as rugged as some other RF meters, so it is not suitable for use in harsh environments.

User Reviews:

Positive:

• "This meter is very accurate and easy to use. I have used it to troubleshoot RF problems in my home and at work, and it has been very helpful."
• "The large display is easy to read, even in low-light conditions. The peak hold function is also very useful for tracking RF signals that are rapidly changing."
• "I am very happy with the value of this meter. It is a great tool for RF troubleshooting and testing."

Negative:

• "I wish the meter had a built-in antenna. I have to purchase a separate antenna if I want to measure RF signals at long distances."
• "I would also like the meter to have a data logging function. This would allow me to save my measurements for later analysis."
• "The Extech RF40 is not as rugged as some other RF meters. I would not recommend it for use in harsh environments."

My Thoughts:

Overall, the Extech RF40 is a good value for the price. It is accurate, easy to use, and has a number of features that make it a valuable tool for RF troubleshooting and testing. However, it does not have a built-in antenna or a data logging function, which are some of the features that are available on more expensive RF meters.

If you are looking for an accurate and easy-to-use RF meter, the Extech RF40 is a good option. However, if you need a meter with a built-in antenna or a data logging function, you may want to consider a more expensive model.

Extech RF40 Where To Buy

You can buy the Extech RF40 and spare parts from the following retailers:

• Extech Direct: This is the manufacturer's website, so you can be sure that you are getting genuine parts. They also offer a variety of other Extech products, so you can find everything you need in one place.
• Walmart: Walmart is a great option if you are looking for a low price. They often have the Extech RF40 on sale, and you can also find spare parts there.
• Amazon: Amazon is another great option for finding the Extech RF40 and spare parts. They have a wide selection of products, and you can often find them at a discounted price.
• Best Buy: Best Buy is a good option if you are looking for a brick-and-mortar store where you can buy the Extech RF40 and spare parts. They have a knowledgeable staff who can help you find the right products for your needs.
• Lowes: Lowes is another good option for finding the Extech RF40 and spare parts in a brick-and-mortar store. They have a wide selection of products, and their prices are competitive.
• eBay: eBay is a good option if you are looking for a used Extech RF40 or spare parts. You can often find them at a discounted price, but be sure to check the condition of the products before you buy them.

I hope this helps!

Extech RF40 Problems and Solutions

some common issues and problems with the Extech RF40 and their solutions:

• The unit does not turn on.
  • Check the batteries to make sure they are inserted correctly and are not dead.
  • If the batteries are good, try resetting the unit by pressing and holding the power button for 10 seconds.
  • If the unit still does not turn on, contact Extech customer support for further assistance.
• The unit does not detect any RF signals.
  • Make sure that the unit is turned on and that the batteries are good.
  • Check the frequency range that you are trying to scan. The RF40 can only detect signals within its specified frequency range.
  • If you are still unable to detect any RF signals, try moving the unit to a different location.
• The unit's display is blank.
  • Make sure that the unit is turned on and that the batteries are good.
  • If the display is still blank, try resetting the unit by pressing and holding the power button for 10 seconds.
  • If the display is still blank, contact Extech customer support for further assistance.

Here are some additional tips for troubleshooting common Extech RF40 problems:

• Make sure that the unit is not near any other electronic devices that could be emitting RF signals.
• If you are using the unit outdoors, make sure that there are no obstructions between the unit and the RF signal that you are trying to detect.
• If you are still having problems with the unit, contact Extech customer support for further assistance.

I hope this helps!