Interested to Buy Any Domain ? << Click Here >> for more details...
i want to calibrate a transmitter in the range of -100 to
300 mmwc. How it is possible to measure -100 to 300?.
- 2 Answers
- 5796 Views
- Hindalco, I also Faced
- E-Mail Answers
Answer Posted / carl_ellis
-100mm wc is a vacuum with respect to atmospheric pressure
as a reference.
Given the range, the pressure transmitter is likely a
differential pressure transmitter.
-100mm wc pressure can be produced with a vacuum source,
like a hand pump connected to the high side, with the low
side open to atmosphere.
Or 100mm wc positive pressure can be applied to the low
side, with the high side open to atmosphere:
DP = high side minus low side
DP = 0 minus 100 = -100mm wc
The URV, 300mm wc, is a calibrated with a pressure source
connected to the high side, with the low side open to the
atmosphere.
Carl Ellis
Measure First
| Is This Answer Correct ? | 0 Yes | 0 No |
Post New Answer View All Answers
1. what is modbus cable? 2. what kind of communication we are using for the interface of DCS, ESD and Third party cabinets? 3. What is serial communication and peer to peer communication?
on interface level transmitter model(RTG3302-EMERSON) What is threshold valve how can we select correct threshold value T1,T2,T3,T4 When interface water & hydro carbon
we are having yokogawa centum cs3000 dcs in our power plant. i need some of the operator guides NOT to appear in HIS0163 AND HIS 0162 but it shoul appear in HIS0164 HOW TO DO IT?
hi i am eswar i want to know the instrumentation interview questations for eil(engineers india ltd) i have applied for engineer post in eil please help in this.my mail id eswar310@gmail.com
Q- Control problem are mainly classified in _____ types. a-)4 b-)3 c-)6 d-)nono of these Few of them i know is 1- regulator type problem (eg- Air conditioner) 2- tracking problem (eg missile trcking problem) 3- sybernatics 4- optimal control problem
where cascade loop use ?
What is the formula of vabration sesore. i mean how to covert mils to volt plz share if any body knows very argent : my mai is merajalam143545@yahoo.com
if my flow is 20000 m3/h than which range of DPT i have to use????
Conversions
Specific gravity.
What is cut off relay? And why use in PLC and DCS?
what is temperature compensation?
please tell no. & add. of consultancy who recruit me in power plant as instrumen engg. present i m working in power plant as ass.t instrument engg. thanku mahesh 09226562826
what is sliding spool valves?
What is limitation of the ht.of the displacer of a level trol?
