Question 1

how small of a leak will it measure?

Accepted Answer

Very small

Question 2

would I need the transmitter device to leak check air conditioning coils etc?

Accepted Answer

This is a simple tool to hear the whistling of high pressure air going through a small opening.  The high frequency pitch is picked up by the microphone.  You won't need anything else to operate this.  I prefer to use my own headphones instead of the ones in the kit, but that is a personal preference.  It also has a sound bar so  you can see it, too.  You don't need to listen, although I find it helpful.

Question 3

if I pressurize my underground pool skimmer line with air, would this be practical for locating a leak?

Accepted Answer

I don't believe it will help in this application.  To detect the leak, you must be able to see the line and place the unit relatively close to the hose.  So for your application, you would need to expose your lines.  If your pool skimmer lines are visible, it is easier to inject a dye, such as a UV dye, and shine a UV lamp to find it.  If your lines are not visible then you would need to dig up the line to look for the leak.  When I had an underground leak, I hired a person to find it for me.  It was worth the money for the one time repair.

Question 4

Is good for bearing friction detection?

Accepted Answer

Hello and thank you for your question. Yes, with the optional metal contact probe (711-703-G1) Whisper can detect malfunctions in certain mechanical components, bearings included! The contact probe is included with the version that comes with the accessory kit (711-203-G1). Simply screw the metal contact probe to the tip of Whisper and touch it to the suspected mechanical component. For the best experience, use a pair of headphones to utilize Whisper's heterodyne feature. Properly functioning machinery sounds smooth and clear, whereas malfunctioning machinery may produce grinding, scratching, or other irregular noises.

ASIN	B000TRJA8M
Alarm	Audible
Best Sellers Rank	#58,190 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #64 in Leak Detection Tools
Brand	Inficon
Built-In Media	Whisper, Headphones, Rubber extension probe, 2 D-size alkaline batteries, case
Color	Grey, White
Customer Reviews	4.0 out of 5 stars 216 Reviews
Enclosure Material	HAWA
Global Trade Identification Number	00689466037111
Item Dimensions D x W x H	5"D x 12"W x 16"H
Item Type Name	Ultrasonic leak detector
Item Weight	3 pounds
Manufacturer	Inficon
Mfr Part Number	711-202-G1
Model Number	711-202-G1
Number of Items	1
Operating Humidity	95 percent
Power Source	Battery Powered
Product Dimensions	5"D x 12"W x 16"H
Product Style	Laser
Sensor Type	Ultrasonic
Style	Laser
UPC	810044830583 689466037111
Unit Count	1 Count

Whisper

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