Review of Scientific Instruments,
Journal Year:
2024,
Volume and Issue:
95(9)
Published: Sept. 1, 2024
In
this
study,
a
high-precision
counterweight
self-calibrating
surface
thermometer
is
designed
to
reduce
human
and
environmental
influences
on
thermocouple
during
measuring.
A
self-weighted
spring
structure
based
copper
substrate
ensure
perfect
contact
between
the
temperature
source.
conjunction,
wind
guard
coupled
with
insulating
materials
optimize
thermal
exchange
of
thermometer.
Subsequently,
maximum
error
reduced
±1.5
°C
by
system
hardware
optimization.
However,
calibration
alone
insufficient.
Furthermore,
back
propagation
neural
network
employed
calibrate
Temperature
sensor
data
are
collected
under
various
source
temperatures
airflow
velocities
train
network.
Hence,
effectiveness
proposed
Gaussian
function
in
enhancing
measurement
accuracy
demonstrated.
The
results
show
higher
stability
repeatability
than
thermocouple-based
thermometers.
exhibits
robustness
against
operational
variability
indication
-0.2
°C.
contrast,
-2.8
-6.8
Regarding
repeatability,
standard
deviation
device
0.2%,
highlighting
its
consistency
performance.
These
can
mostly
be
attributed
synergistic
effect
clever
mechanical
design
software
optimization,
resulting
outstanding
repeatability.
Chinese Journal of Aeronautics,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Aug. 1, 2024
Conformal
thin-film
sensors
enable
precise
monitoring
of
the
operating
conditions
components
in
extreme
environments.
However,
development
these
encounters
major
challenges,
especially
uniformly
applying
multiple
film
layers
on
complex
metallic
surfaces
and
accurately
capturing
diverse
operational
parameters.
This
work
reports
a
multi-sensor
design
multi-layer
additive
manufacturing
process
targeting
spherical
substrates.
The
proposed
high-temperature
dip-coating
self-leveling
fabrication
achieves
coatings
with
excellent
uniformity,
electrical
insulation,
adhesion
properties.
fabricated
Ag/Pt
thin
thermocouple
arrays
heat
flux
sensor
exhibit
maximum
temperature
resistance
up
to
960
°C,
thermoelectric
potential
outputs
closely
mirroring
those
wire-based
thermocouples.
Harsh
environmental
testing
was
conducted
using
high-power
lasers
flame
gun.
results
show
that
array
conformal
thermocouples
more
reflected
changes
at
different
points
surface.
achieve
responses
within
95
ms
withstand
environments
fluxes
over
1.2
MW/m2.
method
offers
promising
applications
harsh
environments,
including
aerospace
nuclear
power.
Coatings,
Journal Year:
2024,
Volume and Issue:
14(8), P. 969 - 969
Published: Aug. 2, 2024
Pt
thin-film
resistance
temperature
detectors
(RTDs)
have
been
fabricated
by
magnetron
sputtering
on
various
substrates,
including
silica,
polyimide
(PI)
and
LaAlO3
(LAO)
(100)
single
crystal.
The
influences
of
different
substrates
the
performance
RTDs
studied.
It
is
revealed
that
exhibit
a
significant
dependence
coefficient
(TCR).
Silica,
PI
LAO
yield
TCRs
3.2
×
10−3,
2.7
10−3
3.4
/K,
respectively.
substrate
significantly
larger
TCR,
compared
to
most
other
reported
values.
These
devices
also
demonstrate
fast
response
time
680
μs,
which
shorter
than
many
RTDs.
Furthermore,
could
serve
as
flexible
detectors,
maintaining
consistent
linear
relationship
between
even
when
bent.
Review of Scientific Instruments,
Journal Year:
2024,
Volume and Issue:
95(9)
Published: Sept. 1, 2024
In
this
study,
a
high-precision
counterweight
self-calibrating
surface
thermometer
is
designed
to
reduce
human
and
environmental
influences
on
thermocouple
during
measuring.
A
self-weighted
spring
structure
based
copper
substrate
ensure
perfect
contact
between
the
temperature
source.
conjunction,
wind
guard
coupled
with
insulating
materials
optimize
thermal
exchange
of
thermometer.
Subsequently,
maximum
error
reduced
±1.5
°C
by
system
hardware
optimization.
However,
calibration
alone
insufficient.
Furthermore,
back
propagation
neural
network
employed
calibrate
Temperature
sensor
data
are
collected
under
various
source
temperatures
airflow
velocities
train
network.
Hence,
effectiveness
proposed
Gaussian
function
in
enhancing
measurement
accuracy
demonstrated.
The
results
show
higher
stability
repeatability
than
thermocouple-based
thermometers.
exhibits
robustness
against
operational
variability
indication
-0.2
°C.
contrast,
-2.8
-6.8
Regarding
repeatability,
standard
deviation
device
0.2%,
highlighting
its
consistency
performance.
These
can
mostly
be
attributed
synergistic
effect
clever
mechanical
design
software
optimization,
resulting
outstanding
repeatability.
