Best Extech RF40 Battery Acid and Engine Coolant Refractometer

Buy Extech RF40 Battery Acid and Engine Coolant Refractometer

Extech RF40 Battery Acid and Engine Coolant Refractometer Product Description:

• Measures the freezing point of ethylene glycol and propylene glycol
• Max resolution 2°F
• Automatic temperature compensation
• Also displays the charge condition of automotive batteries

Product Description

Automotive coolant refractometer measures the freezing point of coolants plus battery charge condition. Requires only a few drops of solution to use.

Customer Reviews

Most helpful customer reviews

1 of 1 people found the following review helpful.
Highly Recommended
By Denis M. Randall
I work as a custodian for a public school system. The new building has a chiller system for cool air. I need to be able to monitor the glycol concentration for proper operation. The Extech RF40 comes with excellent instructions and is easy to calibrate and use. All this at what I feel is a very fair price.

0 of 0 people found the following review helpful.
A GREAT tool!!
By Dale Lee Sumner
As an RV tech, I use this tool to check the specific gravity of the house and chassis batteries on any RV that I am working on. Much more accurate than just using a DC Volt meter or hydrometer. Easy and quick to use. I can check all of the cells in just a few minutes. Highly recommended to anyone who deals with lead-acid batteries on a regular basis!

0 of 0 people found the following review helpful.
Convenience and Accuracy
By Christopher Plona
Bought for use at my off-grid solar powered vacation home.Much easier to take and record accurate specific gravity readings on my batteries. With this easy to use tool I'll be more diligent about watching out for my batteries' health.Recommended.

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Where Can I Buy Extech EA30 EasyView Wide Range 40 Foot Candles to 40,000 Foot Candles Light Meter

Buy Extech EA30 EasyView Wide Range 40 Foot Candles to 40,000 Foot Candles Light Meter

Extech EA30 EasyView Wide Range 40 Foot Candles to 40,000 Foot Candles Light Meter Product Description:

• Measuring ranges 40, 400, 4000 and 40,000 foot candles; 40, 400, 4000, 40,000 and 400,000 Lux
• Max resolution 0.01Fc/Lux
• Extra large display with analog bargraph
• Min/Max, Peak Hold, Relative and Data Hold
• Remote sensor with 39 inch coiled cable and protective cap

Product Description

The Extech Easyview Wide-Range Light Meter measures up to 40,000 ft.-candles and 400,000lux with ±3% accuracy.

Customer Reviews

Most helpful customer reviews

1 of 1 people found the following review helpful.
Easy to Use
By Lance Thompson
Very easy to use. Appears to be quite accurate. My only complaint is that the screen is not back lit. I am using the photometer for evaluating landscape lighting. A lighted display would help in the dark.

0 of 0 people found the following review helpful.
Good light meter
By M. Jones
Works very well, but I have two minor gripes:1. The cord is a little short, so the sensor cannot be too far away from the meter. I use this to measure very low light levels in an enclosure, so this is an issue.2. It measures negative lux levels! How is this possible? Am I standing next to a black hole? They should have bracketed it at 0.

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Reviews Extech 480823 Electromagnetic Field and Extremely Low Frequency Meter

Buy Extech 480823 Electromagnetic Field and Extremely Low Frequency Meter

Extech 480823 Electromagnetic Field and Extremely Low Frequency Meter Product Description:

• Measures AC magnetic fields from electrical appliances, power lines and wiring
• Choose of readings in milliGauss or microTesla; ELF frequency bandwidth 30 to 300Hz
• Simple one button operation
• Max resolution 0.1 milliGauss (0.01 microTesla)
• 1-year warranty

Customer Reviews

Most helpful customer reviews

79 of 81 people found the following review helpful.
Good meter, lousy company.
By Cano2
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?

44 of 44 people found the following review helpful.
Great meter
By Jan White
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.

35 of 36 people found the following review helpful.
Very good handheld Gauss meter
By NanoMan
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.

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