Answer / madhava reddy

O2 analyzer is used in all types of boilers like CFBC and
AFBC etc..role of this analyzers to measure the O2
concentration after the ECONOMIZER ,it is a normal value like
(3 to 4) no problem ,if any variotions obeserved based on
that value we can increase/decrease SA fan air into the boiler

Answer / msp

:- If analyzer showing wrong on DCS than first I will
forced the analyzer value on the DCS if any tripping taken
from it.
Through the Multimeter checked the value 4 to 20 mA on DCS
or same on field As per define range in the DCS as well as
analyzer transmitter. If all things are correct than its
calibration was got disturbed. For the calibration
1 For the calibration we need sample gas and instrument air.
2 Connect the both input instrument air and sample air
through the rotameter for flow control of the both air and
sample gas.
3 Power on the analyzer and communicate hart communicator
with the analyzer.
4 For the zero calibration apply the sample gas with the
help of rotameter for flow control on the analyzer. And
press enter on the zero calibration on the hart
communicator.
5 For the span calibration apply the Instrument air with
the help of rotameter for flow control on the analyzer. And
press enter on the span calibration on the hart
communicator.

After calibration save the setting with the help of the
hart communicator.
And cross checked the same 4 to 20 mA by given the
instrument air and sample gas accordingly.

Hot calibrate a level transmitter (wet & dry legs)?

1 Answers   Honeywell, IEC,

---

where can we use viberation transmitter,and how can we control viberation?

1 Answers   Maden,

---

why is not useing in boiler skin thermocople

1 Answers   KNPC,

---

What is micromotion transmitter? What is the porpose of using this transmitter?

2 Answers   Samsung,

---

Explain an adaptive / self-tuning controller’s major draw card.

0 Answers  

---

I want to measure bidirectional steam flow? Kindly suggest me a suitable flow meter. steam is superheated at 41kg/cm2, 350°C

2 Answers  

---

can we copy the software from a transmitter using hht(hart 275) ?

0 Answers  

---

I have a Control VAlve having size of 2 ".Only the known parameter is Pressure drop . Its 2 Kg. Then How to calculate control valve sizing means Cv.

0 Answers   JSW,

---

1.Give example of analog and digital signal 2. What is yhe advantage of 8086 than 8085

5 Answers   Bhel, College School Exams Tests, Profitec,

---

How to find the range of DP cell Transmitter for measurement of level in closed vessel.

3 Answers   Rosemount,

---

can anybody tel me how a vfd or any field instrument communicates/interface with plc/scada/cs.

0 Answers   Honeywell,

---

HI, can anybody give details about GAS TREATMENT PLANT CONSTRUCTION,as INSTRUMENTATION ENGINEER what are the responsibilites.what are the instruments mainly instrumentation engineer will deal with

0 Answers   GSM, IOCL,

---