Which model of flow meter to choose?

Reply to 1# daizf2003: Please provide the parameters – medium name, pressure, temperature, and the size of the pipeline in use – and I’ll help you choose

Based on the properties of the medium, the following flow meters can be selected: 1. For conductive liquids, use an electromagnetic flow meter: http://www.shakic.com/cp/jianci.HTM 2. For non-conductive oily substances, use a gear flow meter: http://www.shakic.com/cp/OVAL%20LNV%20oval%20gear%20flowmeter.htm 3. For non-conductive aqueous solutions, use a turbine flow meter: http://www.shakic.com/cp/wolunllj.htm 4. For high precision, use a Coriolis mass flow meter: http://www.shakic.com/cp/yetizhiliangllj.htm 5. For general control purposes, use a metal tube float flow meter: http://www.shakic.com/cp/product10.htm

Reply to 2# kedaliguocheng: The medium is chloroethane; the operation is carried out at room temperature, with a gauge pressure of 0.3 MPa, and the pipe diameter is around DN25.

Reply to 4# daizf2003: Use a metal rotameter with an accuracy of 1.5. I guarantee it will work; I have cases like this

For the metal rotor, care must be taken during installation: it should be installed in a vertical position, with the flow of the medium going from bottom to top, and it should be installed downstream of the valve. A flow rate of 0.4 m3/h is a bit low; if conditions permit, reducing the diameter could be considered.

I agree with the views expressed on floors 5 and 6: for media with small diameters, low viscosity, and high cleanliness, where precision requirements are not high, rotor flowmeters can generally be used

Well, for low flow rates, it’s better to use metal tube floats; just be careful during installation, and there shouldn’t be any problems. Technical consultation hotline: 15949162633. For more details, please refer to: Standard orifice plates, circular-notch orifice plates, flow-limiting orifice plates: http://www.jsemck.com/cpzs.asp?ProClass=63 http://www.fengdaojiaoyi.com/g_list.asp?id=92. Balanced orifice plate flow meters: http://www.jsemck.com/cpzs.asp?ProClass=85 http://www.fengdaojiaoyi.com/g_list.asp?id=101. ISA1932 standard nozzles, long-diameter nozzles, Venturi nozzles: http://www.jsemck.com/cpzs.asp?ProClass=64 http://www.fengdaojiaoyi.com/g_list.asp?id=93. Classic Venturi tubes, inserted (embedded) dual Venturi tubes: http://www.jsemck.com/cpzs.asp?ProClass=65 http://www.fengdaojiaoyi.com/g_list.asp?id=94. Electromagnetic flow meters: http://www.jsemck.com/cpzs.asp?ProClass=71 http://www.fengdaojiaoyi.com/g_list.asp?id=95. V-cone flow meters: http://www.jsemck.com/cpzs.asp?ProClass=73 http://www.fengdaojiaoyi.com/g_list.asp?id=96. Wedge-shaped flow meters: http://www.jsemck.com/cpzs.asp?ProClass=74 http://www.fengdaojiaoyi.com/g_list.asp?id=97. Elbow-type flow meters: http://www.jsemck.com/cpzs.asp?ProClass=75 http://www.fengdaojiaoyi.com/g_list.asp?id=98. Anubaa flow meters: http://www.jsemck.com/cpzs.asp?ProClass=66 http://www.fengdaojiaoyi.com/g_list.asp?id=102. Wilo flow meters: http://www.jsemck.com/cpzs.asp?ProClass=66 http://www.fengdaojiaoyi.com/g_list.asp?id=103.

Optional imported metal rotameters from the American company BROOKS. The main products manufactured by this company include metal rotameters, glass rotameters, Coriolis mass flow meters, thermal mass flow meters, and BROOKS mass flow meters. If necessary, please contact Manager Ye at Brooks’ Beijing office: phone 010-85865624, fax 010-85860084, email Sean.Ye@brooksinstrument.com