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Spec：Used for measuring Leakage of system.

Theory of Ultrasonic Gas Leakage Detection

Human ear can hear sound frequency up to 18 KHz. The sound frequency above 20 KHz is categorized as ultrasonic sound which is not audible. Ultrasonic sound is very directional in nature. We can utilize this nature to pinpoint the exact origin of the sound source where the leak is located. Physics tells us that the gas always flows from the higher pressure region to the lower one. When the pressure difference is only a small opening, the turbulence created by the gas through the small hole then generates ultrasonic sound. In the non pressurized state, the ultrasonic transmitter is applicable, ultrasonic wave can leak from the small hole. Ultrasonic gas leakage detector is designed based on the above simple physics.

Features:

This Ultrasonic Gas Leakage Detector is designed to locate the source of the ultrasonic emissions generated by gas or air leaks. The leakage level is displayed by "LED Display Panel", and is covered to audible sound by either internal buzzer or to external optional earphone.

Applications：

Used for measuring Leakage of system. Applicable to detect Leaks in refrigeration and air condition systems, Leaks in heating system, Internal leaks in steam transfers, Compressed air leaks, Tire & tube leaks, Engine seals, Electrical arcing, The bearing problems, Bake system. With the Ultrasonic transmitter, it is applicable to Air leaks around door & window gaskets & seals, Water leaks in roofs, Conduit & pipe identification, Door & trunk seals, Windshield leaks.

Specifications：

Leakage Sensitivity Indicator	LED display panel & audible tone. (LED display is a relative measurement only. Audible tone is the frequency of the received ultrasonic sound divided by 32.)
Frequency Response	20 KHz to 100 Khz.
Power Supply	4x1.5 AAA(UM-4) battery
Power Consumption	Approx. DC 25 mA.
Operating Temperature	0 to 50 °C ( 32 to 122 °F ).
Operating Humidity	Max. 80% RH.
Weight	Approx. 140 g/0.31 lb (including battery).
Size	HWD 236 x 63 x 26 mm (9.3 x 2.5 x 1.0 inch)

Notice:

The standard package don't include batteries.Because,the international air shipping forbid to ship liquid,powder and batteries,we can not put them in the package box.Hope you can understand buy them in your local store or supermarket.Thanks for your support!

Shipping:

We will ship all items within 1-3 working days upon receipt of payment,our goal is: ship it as fast as we can.

Standard Shipping: To USA,UK and Australia by ePacket,need 7-12 working days.

Expedited/Standard Int'l Shipping by Fedex,DHL,TNT and EMS courier: To USA,need 3-6 business days,To other countries,need 4-8 business days normally.But sometimes int'l delivery is highly depended on the courier company and local customs/duties.

Import duties and taxes are not included in the item price or shipping charges.These charges are the buyer responsibility.

Warranty&Reture Policy:

We encourage all customers to communicate with us through eBay messages. If you have any questions or comments whatsoever regarding our products or listing, we are waiting to hear from you

A 1 year warranty is offered for this product.If the product malfunctioned under proper usage per instructions

manual within the warranty period, please contact us to obtain shipping instructions and send it back at your shipping costs.

30 days evaluation and investigation takes placed after receiving your return item.A brand new replacement unit will be sent to you at our shipping costs if it meets our warranty requirements.

On Feb-05-20 at 16:20:20 PST, seller added the following information: