Principle
Turbulence created by gas or air forced through a small orifice generates ultrasonic sound. Ultrasonic sound occurs when the atmosphere leaks into a vacuum vessel or when a pressure vessel leaks to the outside atmosphere. Ultrasonic sound's frequency is related to the size of the orifice which ultrasonic sound passes through,but usually the frequency is about 40Hz. Ultrasonic sound is very directional, this directionality is
used to pinpoint the origin of the ultrasonic sound, the leak point.
Portable case and carton box, please see picture for more detail.
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Zhangzhou Eastern technology Group was set up in1993.it is a "State High and New Technology Enterprise " Which specializes in research,manufacture and sales of test & measurement instrpment. the products are expoted to more than 70 countries word-wide,it is one of biggest manufacturers of test & measurement instruments ih China. It has undertaken more than 20 national &provincial projects, and obtained more than 100 national patents. It gets ahead in technology and products, and provides worldwide customers with cost-effective test & measurement instruments.
Q: Are you factory manufacturer or trading company?
A: We are manufacturer, our factory--Eastern Intelligent Meter established on 1993, focus on test and inspection instrument. We have a better price than trading company.
Q:What is your MOQ?
A:The MOQ is 1 for products which we have in stock. If you need make customize, print your logo, please contact us for MOQ, because different product have different MOQ.
Q: How can I get your price for bulk order?
A:Please feel free to contact us on trademanager online or send us an inquiry, then we can discuss the detail.
Q: Can I print my logo on product and packing?
A: Yes,we have the neutral and our brand product in stock,if you need make customize,please contact us for the detail.
Q:What are the terms of payments you offer?
A:For small orders, we prefer pay by credit card and make deal by Trade Assurance. VISA and Mastercard are all OK.For bulk order,TT is a good choice.
Q:What is your lead time?
A:For product which we have in stock, we can send out in 1 working day. But it take time from our factory to shipping agent, the tracking number may update 3-5 days after we send out.