S
Dear Members
We request you to suggest the best methods for our following
requirements
We use to monitor the metal temperature of superheater tubes of our
boiler. The location of measurement is in flue gas path( the temp. of FG
path which varies from 500 deg C to 850 deg C). The metal temperature
will be around 500 deg C. Now we use mineral insulated thermocouples and
we weld a metal pad at the measuring location and insert the
thermocouple inside the pad so that the junction touches the metal. The
measuring location will be insulated suitably to prevent the gas
touching the pad.But it happens that sometimes the thermocouple comes
out of the pad, insulation also goes off and we are not getting the
measurement. Instead the thermocouple starts reading the flue gas
temperature giving the operator various unwanted limits in boiler
operation.
We request the list members/experts to study this problem and suggest
us the best possible method to measure the metal temperature measurement
in boiler applications
Thank you in advance
S. Jeyaprakash
DGM/ FFI/IPP
BHEL-Tiruchy
India
We request you to suggest the best methods for our following
requirements
We use to monitor the metal temperature of superheater tubes of our
boiler. The location of measurement is in flue gas path( the temp. of FG
path which varies from 500 deg C to 850 deg C). The metal temperature
will be around 500 deg C. Now we use mineral insulated thermocouples and
we weld a metal pad at the measuring location and insert the
thermocouple inside the pad so that the junction touches the metal. The
measuring location will be insulated suitably to prevent the gas
touching the pad.But it happens that sometimes the thermocouple comes
out of the pad, insulation also goes off and we are not getting the
measurement. Instead the thermocouple starts reading the flue gas
temperature giving the operator various unwanted limits in boiler
operation.
We request the list members/experts to study this problem and suggest
us the best possible method to measure the metal temperature measurement
in boiler applications
Thank you in advance
S. Jeyaprakash
DGM/ FFI/IPP
BHEL-Tiruchy
India