Yokogawa mv

[arun]

hi
can someone tell me how to use just the dp value in case of yokogawa ejx910A MV ft. We have procured the Tx considering auto compensation however as of now we are using it without the compensation parameters. Moreover from my AMS Tx is not allowing to change calibration range and it changes automatically based on Static pressure range (cal range). Please explain me what is the relation between these two ranges.:confused::confused:


Arun
Inst engineer
IOCL

[jigish_jepal]

AI blocks have six channels for DP, high side static pressure, low side static pressure, capsule temp, CPU/Amp temp. and flange temp.

Normmaly AI1 is configured for DP, AI2 for high side static pressure and AI3 for low side static pressure.

I am writting above out of my memory. Please check user manual for correctness.

[arun]

thnx for d reply...i have checked out the manual but the problem is thr is no sq root option in transfer function like conventional Tx so in local display im jus displayin dp value.nd ne idea abt cal points since my ams doesnt hav methods in this case i couldnt calibrate it too.

[jcpilman]

We are using the EJX910 MV as you described.
In the first Transducer Block, the Primary_Value_Type = 'differential pressure.'
In AI_01, XD_SCALE_UNITS_INDEX = 'inH2O' (0x047A)
L_TYPE = 'Indirect Sqr Root'
OUT_SCALE_UNITS_INDEX = 'lb/h' (0x0534)
Channel = 'Pressure' (0x0001)

This gives us uncompensated flow. If we wanted compensated flow, I believe we would change AI_01, Channel to 'Flow' (0x0005).

...John

[Hamad_1974]

You should be able to modify the function through the Transducer block through what they call AMSinside. Is your TX a multivarible one?
If it is, then you can get it through AI-1 directly from the field.

Good luck.

[arun]

Ya mine is MV one .I tried restarting with default and then found the PV sensing in AMS then i checked the channel selected it was selected as 0 i changed it to 1 and now it works fine.
tnks for the support.