A rotameter is a device that measures the volumetric flow rate of fluid in a closed tube.
It belongs to a class of meters called variable area flowmeters, which measure the flow rate by allowing the cross-sectional area the fluid travels through to vary, causing a measurable effect.
Rotor Flow Meter,Glass Rotor Flowmeter,Metal Rotor Meter Flow Meter,Liquid Rotary Flowmeter For Water Kaifeng Chuangxin Measurement & Control Instrument Co., Ltd. , https://www.kfcxflowmeter.com
At the request of the purchaser, the second point of the first article of the “Qualification Requirements for Bidders†in the procurement announcement is as follows:
1. The original procurement announcement stipulates that “there is a qualification for security qualification or professional contracting for building constructionâ€, which is amended to cancel the qualifications of the article.
2. Other requirements and regulations remain unchanged, and the opening time is unchanged.
3. Please ask each potential bidder who has downloaded the procurement documents and has not downloaded the procurement documents to execute according to the revised regulations.
Special announcement! Company Name: Ningbo Municipal Government Procurement Center Contact: Mr. Zheng Tel: 0574-87283680 E-mail: Fax: 0574-87282586 Postal Code: Address: Room 904, 9th Floor, 79 Cangshui Street 
Title: Traffic Administrative Service Center LED Display and Queuing System Equipment Project Tender No.: NBZFCG2009038X Announcement Date: March 3, 2009 Deadline: March 12, 2009 Tendering Agency: Ningbo Highway Management Office: Zhejiang-Ningbo City Contents: Announcement No.: NBZFCG2009038X for the procurement announcement of the “Drainage Administration Service Center LED Display and Queuing System Equipmentâ€