If a flow transmitter (magnetic type FT) that can measure flow and temperature,

If a flow transmitter (magnetic type FT) that can measure flow and temperature, then why in some industries people use flow transmitter and temperature transmitter in the same line 1 after another? Even after 1 single flow FT is capable of measuring flow as well as temperature.

Question Posted / aniketskadam007

1 Answers
4573 Views
Process Control Technologies, I also Faced
E-Mail Answers

If a flow transmitter (magnetic type FT) that can measure flow and temperature, then why in some ind..

Answer / carl_ellis

I'm aware of few high end flow meters (coriolis) that measure process temperature as well a flow rate, but I'm not aware of a magnetic flow meter that does so. There are magmeters that measure the electronic temperature of the electronics for diagnostics, but the temperature value is really to used for warranty replacement evaluation (to make sure that the failure wasn't due to overheating).

The multimeasurement concept is certainly valid - fewer insertions into the process. As to why a process temperature output is available but is not used but a separate temperature sensor is used, I can only speculate that either the instrumentation designer was just unaware of the availability of the temperature from the flow meter or was subject to the "we've always done it as a separate sensor" philosophy.

In general though, the vast majority of flow meters are just that, flow meters; they are not multivariable meters with a flow output and a temperature output. With the increased use of fieldbus, that's likely to change over the next decade.

Carl Ellis
Measure First

Is This Answer Correct ?

2 Yes

0 No

Post New Answer

More Instrumentation Interview Questions

Furnace draft transmitter range is -50 to +50 mmwc. why the impulse line connected in hp side?

2 Answers Arena,

can u please give the exact ckt explaination of AC Drive related to industries.

6 Answers

difference between dcs & pld

2 Answers

how to calculate signal cable sizing? and multipair cable sizing??explain in brief?

0 Answers

What is the difference between PLC and DCS?

4 Answers Honeywell,

what is the difference between plc and pc?

5 Answers ADI, NFCL, Wipro,

What is Fieldbus?

3 Answers NSL,

Intools training

1 Answers

What is the difference between working pressure and calibration pressure of a control valve

0 Answers

can someone tell me about electronic speed switch &how it conect with proximittyswitch?(with dgm)

0 Answers

What is diff between Ingral orifice and simple orifice?where it use?

3 Answers

Troubleshoot to the device level basic process control systems given the Process and Instrumentation Diagram?

2 Answers Chettinad, HPCL,

For more Instrumentation Interview Questions Click Here