bidirectional flowmeter

Does the user's manual not say?

no ,nor I have seen installation of flowmeter for bi-directional.

Is the manufacturer's phone number in the manual that came with it?

If this flowmeter cannot work bidirectionally then two pairs of control valves could steer the product flow in a diode bridge rectifier-like configuration. The flow through the meter will always be in just one direction whether loading or unloading.

it is a good way , I check it requires lot of modification and purchase.

Also there is difference in pressure for loading 16 bar and unloading around 5 bar .

So is there an upper limit that determines the boundary of a go/no-go decision, then?

Probably what i understand is the Range -460 to 460 tons/hr ,we take hart slot2 option is used output is 4 to 20 ma . in formation I got is -460ton/hr is unloading the ship and 460tons /hr is loading the ship.

...in terms of <...it requires lot of modification and purchase...>?

Put two flow meters in series, pointing at each other. Ignore the one that is installed the "wrong way".

https://d2kqb8h5bau3hi.cloudfront.net/files/tce-8501-technical-m-en-170308-e001.pdf?v=1504009936

If it's this one, it looks like it is bidirectional, +/- 40 ft/sec, (see page 4 of following document)

https://www.bakerhughesds.com/sites/g/files/cozyhq596/files/acquiadam_assets/xmt868i_datasheet_reve_english_0.pdf

I googled GE868 but they were not flow meters. I did find GF 868 but it is a flare flow meter so I'm not sure if it is the one you have. It is an ultrasonic flow meter type.
The only flow meter type I know of that can indicate bidirectional flow are coriolis flow meters. Those have a separate digital (one bit) signal for indicating direction and the standard 4 to 20 mA signal. There are other models that digitally (using HART, PROFIBUS, and FOUNDATION FIELDBUS) transmit the flow data, positive for one direction and negative for the other direction.
If you can provide the brand (manufacturer) and the complete model number, we might be able to make a better search.

regards,

Vulcan

XMT868I

Okay, Rixter got the correct instrument and the manual says:

there are parameters for forward and reverse flow. So, that means, your unit is indeed capable of measuring both flow directions.

My search turned up several types of manuals: programming, installation, service, quick start, etc. so there is no lack of information and it is easy to obtain. Just type "XMT868I" into the search box and you'll get everything you'll need to get your unit up and running. (",)

regards,

Vulcan

I have configure analog output for -460 to 460tons/hr for 4 to 20 ma , selecting MDOT as flow output , flow xmtr reads 12ma as zero but it is fluctuating while no flow is present in the line is this okay ? or is there any other function in order to avoid fluctuation when actual flow is zero

Please advise the forum about the phone call with the instrument manufacturer's technical helpline?

You might find a setting that allows a low pass filter to be engaged on either the flowmeter or the display that will remove this annoying fluctuation. There is also the possibility this fluctuation might be real. The product might be sloshing back and forth over the region of the flowmeter.

There is a parameter usually labelled as "low flow cut-off." This is the flow around the zero point where the flow meter will consider it as zero flow. For example, if the low flow cut-off is 3 liters per minute, the flow meter will indicate zero when the flow is between ±3 liters per minute.
I didn't download the manual (since I have no use for it) so I don't know if your unit uses the same label for this parameter. Each parameter should have a description in the manual, just read them.

regards,

Vulcan