Question { 7528 }

i want to Measure the Difference pressure of Packed distillation Column of height 3 mtr. h.p. side connected to
bottom & L.P. side connected to the top , so tell me what
will be THE URV & LRV of that D.P. transmitter?

Answer

The height of column doesn't
matters here. You have to fix
the range in approximate
estimation of maxim pressure
drop. For example the
heighest d. pressure will be
the equal to inlet pressure.
So you can set this also a
range.

Question { 3304 }

IF I WANT TO BUY A THERMOCOUPLE THEN WITCH PARAMETER I LOOK

Answer

There is no too much parameter we need to consider,
1, K type thermocouple is most Liked one, Because of its Most linear response to Temperature from other types,

2, Oxidation criteria also plays a role,

3, Different thermocouples are better at diff regions of
temparature, For ex, when you need to measure a
temparature ranging
normally at 400 deg Celcius to 450 Deg C means refer the
refer the Temperature Curves for all themocouples and
choose which one is most linear at that particular
region,

Question { 4383 }

if i want buy a pressure gauge then witch parameter i look

Answer

Few things have to be taken on Account

1, The process fluid, Say if its Sulphuric Acid mean you have
to consider the metalargy for pressure gauges,
2, Type of PG, say when you gonna Install on a Pump Discharge
head mean there will be more Vibration, so you have to go
for Diaphragm type of PGs, else Fill Fluid,
3, Normally we choose the Range of PG by multiplying the
operating pressure with 1.5, Say operating pressure 5
Kg/Cm2 means the PG range must be 0 to 7.5 Kg/cm2.
4, Depends upon the Pressure range, PGs also Differ.