Answer / binu

Connect the input air suply of around 5 to 7 Barg. Feed 4
mA through the calibrator, the output aire pressure gauge
shal indicate 3 psi. Feed 20mA through the calibrator, the
output air pressure gauge shall indicate 15 psi.

Answer / guest

hi sanjay
1. AIR SUPPLY
I/P input - 1.4kg/cm2
Out put - 0.2 to 1kg/cm2 ok

2.input signal= 4-20 mA

i.connect the air supply to input with the hepl of REGULATOR i.e 1.4kg/cm2
ii.connect the MASTER GAUGE to OUT PUT ok

Apply the signal

i. 4mA- 0 kg/cm2 (if not Zero/0.2kg/cm2 Adjust Zero adjustment Screw)
ii. 20mA-1 kg/Cm2 (if not 1kg/cm2 Adjust Span adjustment Screw) ok.

then 8, 12, 16mA.
min. and max. is ok the remaining will perfect automatically i.e 8,12,16mA.

and MAIN IMP POINT is ON the I/P's Ckt board Side 4 adjust ment buttons is there and adjust that buttons Direct and Revese Actions ok

Answer / asif javaid

FIRST SEE ITS PRESSURE RANGE APPLY INPUT PRESSUR 5PSI
MORE THEN MAXIMUM RANGE OF OUTPUT PRESSURE AND SEE ITS OUT
PUT THEN APPLY 4MA AND SEE OUTPUT SIGNAL 3 PSI NOW ADJUST
3 PSI FROM ZERO ADJUSTMENT SCREW NOW 8 12 16 &
20MAAPLY AND CHECK MAX PRESSURE RANGE NOW ADJUST FROM SPAN
SCREW

( RANGE CAN BE DIFFERENT FROM 3 TO 15 PSI )

Answer / haridass

Friends, plz understand the question first. The
interviewers has mentioned "how to calibrate a NEW i/p
converter?"
Why the new i/p needs calibration?

Your answer must be like this..

"Sir, the new i/p would be factory calibrated with high
accuracy master instruments, so before we commission it in
the plant we have can check its output by applying proper
signal, unless we have good accuracy masters we no need to
disturb the calibration. If yes, we can do the calibration
using the 30psi regulated supply, 4-20 mA source, and
receiver gauge."

Answer / charlie daubitz

There can be a jumpper on the I-p converter to set the
range. There are more accepted ranges than only 3-15 psi.

Answer / binu

Dear Sanjay,

Hope you are adjusting 4mA with "Zero" screw and 20mA
with "Span/range" screw. I feel that you might have
adjusted the 3 psi with range screw.

Answer / sanjaymaven

i follow your above procedure
i use 0-30 psi pressure gauge
when i feed 4 mA gauge show 3 psi, gradually i increase mA
, simontaneously pressure increase.At 10 mA gauge shows maxm
20 psi. i little adjust the range screw but nochange on
gauge. now what will i do .please sujest

what is meant by calibration

3 Answers  

why relays are used with plc?

4 Answers  

HELLO FRENDS ,, I M IN THE MIDST OF TROUBLE .. JUST LITTLE HELP ME... SUPPOSE ,, I HAVE A CLOSE VESSELE TANK ( HEXANE MEDIA ) ,, I M USING ROSEMOUNT 2051 DPT FOR LEVEL APPLICATION .. ITS CALIBRATE RANGE IS.. . 0 TO 950 MMH20 ..I DID CALIBRATED DPT WITHOUT REMOVING IMPULSE LINE OF HIGH AND LOW TAPPING.. & WITHOUT DISTURB 3 WAY MANIFOLD..!!! BUT ,,, DURING CALIBRATION I SELECT RANGE BY HART LRV IS 900 MMH20 & URV IS 1300 MMH20 ,, BUT ,TANK LEVEL SOMETIMES 100 % AT 1100 MMH20 , SOMETIMES 1300 MMH20 ..IN THIS CONDITION .. WHOLE LOOP FAILED ,, MAIN THING IS THAT ,, HOW TO CUSTOME RANGE SELECT ?? AND IF I USED RANGE OVER THE ORIGINAL CALIBRATE RANGE ,,,THEN WHAT ERROR WILL BE COME ??? HOW TO ZERO CALIBRATION OF DPT... HOW TO ZERO TRIM BY MANIFOLD ?? AND FOR TANK LEVEL PURPOSE ... WHICH UNIT I CAN USE ??? IS THERE ANY CALCULATION OR CALIBRATION .. IF YEH .. THEN PLZ JUST GIVE ME CALIBRATION STEPS FOR DPT.. THANKS YOURSSSSSSS

1 Answers   Torrent Pharma,

centrifugal compressor interlock? Tell me the parameter at which compressor will trip

0 Answers   Cairn,

I am using Capacitive type level transmitter for measuring oil level in a closed tank (lub oil tank). The txs range is 1500mm, and they do hunt regularly (for about 45mm), can anybody tell what could be the reason??? or any other type level tx that could be used to avoid this?

1 Answers  

I am new in work for 1 of our project we have some instrument in BOM including Pressure, Temp. and so on, I also noticed some objects like pressure switch process HOOK UP; which I don't know what does "HOOK UP" mean here.

3 Answers  

difference b/w single acting and double acting actuator by using application only?

2 Answers   McDermott,

What is the maximum operative of Drive ?

2 Answers   Reddy Labs,

which is type of thermocouple is used to measure 1000deg?

9 Answers  

What is the working principle of Dozing valve used in cement industry?

1 Answers  

hello dear i have faced problem in drum level transmitter. the problem is when i engrize the meter meter shows 100% but the actual level 40 or something plz suggest me

7 Answers  

What is the purpose of LO Overhead tank in turbines.

0 Answers   ADMA OPCO,