Regarding Flow Meter Specifications

There aren't a lot of flow meters that can handle steam at 200 Deg C and water at -20 Deg C.

There aren't a lot of flow meters that can handle ultra low flow at 0.01m/S all the way up to a hanger busting/pipe clanging velocity of 20m/S

Tough app here.

Are you copying down the specs of an old meter? I could see superheated water at 200Cº but not sure how you could do the -20Cº part. I would imagine your vendor is as confused as we are.

Unless it is classified, just tell the vendor what you are pumping, expected flow rates temperature variations (important for temp compensating meters) and how soon you need it.

Drew K

Talk, rather than type, to the vendor. Answer the questions.

What additional data is vendor asking for?

Your figures don't work out - velocity at 19000 m³/h is ~ 3 m/s, not 20.

You truly need to talk to the flowmeter supplier.

You are potetnially buying three items of kit they need to match.

The first is the flowmeter housing itself. A piece of tube/pipe with space for some form of sender built into it. It might be flange/flange or some other style of fabrication. What lenght do you want? What coatings do you want? What flange style do you want? Etc.

The second is the flowmeter detector. This could be an electromagnetic coil type, but could also use doppler or an insertion probe. All with their own capabilities relative to accuracy and precission. If you want -1/+3% at 1500mm diameter and 0.01m/sec then there will be some real technical challenges.

The third item is the actual "sender" unit for the detector. This converts the signal from the sensor/detector into a standard format for transmission and needs to be compatible with whatever receiving technology you intend to use. There will also be some information relating to response time and sender rates that might be needed.

The other posts prior to this have also highlighted some other highly relevant ssues, like water at 200DegC? Water at -20DegC? For this suggested range (if actually for the single device) will create further challenges in selecting materials and such for fabrication of said flowmeter. The supplier will probably need to understand potential rate of change of temperature of fluid and also whether insulation is required for the flowmeter to maintain the contents within certain conditions while it passes through (especially at low flow rates).

Talk to the supplier and your own people who understand the process requirements.

Data does not seem to be authentic. Fluid temperataure varies between -20 C to 200 Deg C. What kind of fluid is it and why same pipe for so much of variation. Also kind of fluid is missing. Is it stean, chilled water, Glycol. There is some problem in understanding of application. Alos if it fluid , nature of fluid, TDS if water is also important.

Seems you are new to the job and need more data and understanding before you go for selecting the flow meter.

Your water will not be fluid at -20°C.

OP might be measuring glacial flow....or not.