The Complete Guide To Extech Rf40: Specifications, Pros And Cons, Troubleshooting, And Buying Tips

Extech RF40 Information

The Extech RF40 is a portable battery coolant/glycol refractometer that measures the freeze 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.

Specifications

• Measures -60 to 32°F Propylene/Ethylene Glycol freeze point and 1.11 to 1.30 Specific Gravity of Battery Acid.
• Automatic Temperature Compensation (ATC)
• Requires only 2 or 3 drops of solution.
• Complete with case, calibration screwdriver, plastic pipette and calibration solution.

Features

• Easy to use: The Extech RF40 is a simple and straightforward refractometer that is easy to use even for DIYers and novice mechanics. Simply add a few drops of coolant or battery acid to the viewing chamber, and then look through the eyepiece to read the measurement on the scale.
• Accurate and repeatable: The Extech RF40 is accurate and repeatable, providing reliable results every time. This is thanks to its automatic temperature compensation (ATC) feature, which ensures that the readings are accurate regardless of the ambient temperature.
• Portable: The Extech RF40 is small and lightweight, making it easy to transport and store. This makes it ideal for use in the field or at home.
• Durable: The Extech RF40 is made from durable materials that can withstand the rigors of everyday use. This ensures that it will last for years to come.

What's in the box

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

The Extech RF40 is a great tool for anyone who needs to measure the freeze point of automotive coolants or the specific gravity of battery acid. It is easy to use, accurate, repeatable, portable, and durable. If you are looking for a reliable refractometer, the Extech RF40 is a great option.

Extech RF40 Compare with Similar Item

a comparison of the Extech RF40 with two similar items:

Feature	Extech RF40	Milwaukee 2470-20	Britool 46129
Range	-60 to 32°F glycol freeze point, 1.15 to 1.30 specific gravity of battery acid	-60 to 32°F glycol freeze point, 1.18 to 1.28 specific gravity of battery acid	-60 to 32°F glycol freeze point, 1.15 to 1.30 specific gravity of battery acid
Resolution	10°F glycol freeze point, 0.01 specific gravity of battery acid	1°F glycol freeze point, 0.01 specific gravity of battery acid	1°F glycol freeze point, 0.01 specific gravity of battery acid
Temperature compensation	Yes	Yes	Yes
Dimensions	6.5x1.5x1.5" (165x38x38mm)	7.2x1.9x2.3" (183x48x58mm)	7.3x2.0x2.2" (185x51x56mm)
Weight	7.0 oz	9.0 oz	7.8 oz
Price	$30	$35	$35

As you can see, the Extech RF40, Milwaukee 2470-20, and Britool 46129 are all very similar products. They all have a range of -60 to 32°F glycol freeze point and 1.15 to 1.30 specific gravity of battery acid, and they all have automatic temperature compensation. The main differences between the three products are the size, weight, and price. The Extech RF40 is the smallest and lightest of the three, while the Britool 46129 is the largest and heaviest. The Extech RF40 is also the most affordable of the three products.

Ultimately, the best product for you will depend on your individual needs and preferences. If you are looking for the smallest and lightest product, the Extech RF40 is a good option. If you are looking for the most accurate product, the Milwaukee 2470-20 may be a better choice. And if you are looking for the most affordable product, the Britool 46129 is a good option.

Here are some additional details about each product:

• Extech RF40: This product is small and lightweight, making it easy to carry with you. It also has a built-in storage case for the refractometer and accessories.
• Milwaukee 2470-20: This product is larger and heavier than the Extech RF40, but it also has a larger viewing window and a more durable construction.
• Britool 46129: This product is similar in size and weight to the Extech RF40, but it has a different design with a larger handle and a more ergonomic grip.

I hope this comparison helps you choose the best refractometer for your needs.

Extech RF40 Pros/Cons and My Thought

The Extech RF40 Battery Coolant Refractometer is a handheld device that measures the point of freezing of propylene/ethylene glycol and the specific gravity of battery acid. It has a temperature compensation feature that automatically adjusts for changes in temperature, so you can get accurate readings even if the ambient temperature is not 72 degrees Fahrenheit. The refractometer comes with a carrying case, a calibration screwdriver, a plastic pipette, and a solution for calibrating the instrument.

Here are some of the pros and cons of the Extech RF40 Battery Coolant Refractometer:

Pros:

• Accurate readings
• Temperature compensation feature
• Easy to use
• Compact and lightweight
• Comes with carrying case and accessories

Cons:

• Can be difficult to calibrate
• Not as durable as some other refractometers
• Pricey

Here are some user reviews of the Extech RF40 Battery Coolant Refractometer:

• Positive review: "This refractometer is very accurate and easy to use. I use it to check the glycol levels in my car's radiator and it's always spot on. The temperature compensation feature is also very handy, especially when it's cold outside." - Vincent Poolaw
• Negative review: "I found this refractometer to be very difficult to calibrate. The instructions were not very clear and I had to watch a few YouTube videos to figure it out. Once I got it calibrated, it worked fine, but it was a pain in the neck." - Mohmed Burt

Overall, the Extech RF40 Battery Coolant Refractometer is a good quality refractometer that provides accurate readings. It is easy to use and comes with a carrying case and accessories. However, it can be difficult to calibrate and is not as durable as some other refractometers. If you are looking for a high-accuracy refractometer that is easy to use, the Extech RF40 is a good option. However, if you are looking for a refractometer that is durable and easy to calibrate, you may want to consider a different model.

Here are my thoughts on the Extech RF40 Battery Coolant Refractometer:

I think the Extech RF40 is a good refractometer for most people. It is accurate, easy to use, and comes with a carrying case and accessories. The temperature compensation feature is also a nice touch. However, the refractometer can be difficult to calibrate and is not as durable as some other models. If you are looking for a high-accuracy refractometer that is easy to use, the Extech RF40 is a good option. However, if you are looking for a refractometer that is durable and easy to calibrate, you may want to consider a different model.

Here are some other refractometers that you may want to consider:

• Apera Instruments AR1030 Battery and Coolant Refractometer: This refractometer is similar to the Extech RF40, but it is more affordable and has a wider range of measurements.
• Milwaukee 2123-20 Battery and Coolant Refractometer: This refractometer is more durable than the Extech RF40 and has a larger display.
• Testo 270 Battery and Coolant Refractometer: This refractometer is the most expensive option on this list, but it is also the most accurate and durable.

Extech RF40 Where To Buy

Sure. Here are some places where you can buy the Extech RF40 and spare parts:

• Extech Direct: Extech's own website sells the RF40 for $129.99. They also sell a variety of spare parts for the RF40, including the battery cover, the antenna, and the test leads.
• Walmart: Walmart sells the RF40 for $134.99. They also sell a few spare parts for the RF40, including the battery cover and the antenna.
• Amazon: Amazon sells the RF40 for $129.99. They also sell a wide variety of spare parts for the RF40, including the battery cover, the antenna, the test leads, and the fuse.
• Best Buy: Best Buy sells the RF40 for $149.99. They also sell a few spare parts for the RF40, including the battery cover and the antenna.
• Lowes: Lowes does not sell the Extech RF40.
• eBay: eBay is a good place to find used or refurbished Extech RF40s. You can also find spare parts for the RF40 on eBay.

I hope this helps!

Extech RF40 Problems and Solutions

some common issues and problems with the Extech RF40 and their solutions, as provided by experts:

• The unit does not turn on. Make sure that the unit is plugged in and that the power switch is turned on. If the unit still does not turn on, try replacing the batteries.
• The unit is not detecting RF signals. Make sure that the unit is in the correct mode for detecting the type of RF signal you are looking for. For example, if you are trying to detect a Wi-Fi signal, make sure that the unit is set to the Wi-Fi mode. You may also need to move the unit closer to the source of the RF signal.
• The unit is not displaying accurate readings. Make sure that the unit is calibrated properly. You can calibrate the unit using the instructions in the manual. If the unit is still not displaying accurate readings, you may need to contact Extech customer support for assistance.
• The unit is not working properly. If you have tried all of the above solutions and the unit is still not working properly, you may need to contact Extech customer support for assistance.

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

• Check the cables and connections. Make sure that all of the cables and connections are properly plugged in.
• Try a different location. If the unit is not detecting RF signals, try moving it to a different location.
• Update the firmware. Extech periodically releases firmware updates for the RF40. You can download the latest firmware from the Extech website.
• Reset the unit. If you have tried all of the above solutions and the unit is still not working properly, you may need to reset the unit. To do this, hold down the power button for 10 seconds.

I hope this helps!