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1) How to choose a suitable
for our flow situation ?
  When our project needs flowmeters, the first issue is to determine what kind of flowmeter is ok for it,  whether the liquid has special request for flowmeter, secondly, we need to measure the installed pipe size where we need to connect the flowmeter sensor. Finally, we need to figure out the pressure and temperature in the pipe and what flow range we need to make flowmeter to cover.
Electromagnetic flowmeters,  what kind of liner we choose ?
  Generally speaking, the liner of electromagnetic flowmeters includes Rubber,
PTFE and F4(Teflon).,etc, For wastewater and clear water which has no corrosion material, rubber liner is enough, but for some corrosive acid and Naoh, the PTFE liner is necessary. For some very high temperature liquid, we need to consider F4 liner.
3) What's the difference between Mechanical counter and Digital counter of  oval gear flowmeter?
  As we known, Oval gear flowmeter is one kind of PD flowmeter (Positve displacement flowmeter), it can work only on gravity and without any outsourcing power supply such as 24VDC or 220VAC, so it is the difference, Mechanical counter doesn't need outsourcing power, digital counter needs, so mechanical counter oval gear flowmeter is widely used in the places where electricity is not available. Also gear flowmeter is capable of impurity Oils and diesels.

4) Regarding the installation method of level sensors and flowmeters.
  To all measurement instrument, there are several installation ways which is mostly widely used, such as flange, thread, tri-clamp and insertion. Flange is the most used one, it has many standards due to different countres' industrial standard, such as ANSI, JIS, ASME.

5) About brands product inquiry If  want inquiry brand product, please sent me model codes or nameplate photo.
6) Worldwide brands range:  please refer to sales, brands includes some models of  E+H(Endress+Hauser), Rosemount, Emerson, Fisher, Spirax sarco, Krohne, VEGA, ABB, Siemens, Yokogawa, Azbil (Yamatake), Rotork, EBRO., etc

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