Advantage:
Precise sensing: CAPTEC heat flux sensor are sensing components,
ready to be used and directly responsive to
the net heat flux between their outer sides.
To use them , you simply apply , that is past
them to flat or curved surface and connect the
terminals to any direct reading milli or microvolt meter.
Custom tailored for better fit: Size and shape possibilities are unlimited.
CAPTEC builds sensors as large as 300*300mm square,
as small as 5*5mm square. You can specify intricate
geometries to follow the curves of your hardware.
Computed aided design produces uniform or profiled
heat flux sensing elements to meet your precise needs.
Integral temperature sensor: CAPTEC can furnish heat flux sensors
with integral thermocouple built in the sensing
area ideal for heat transfer controllers.
Heat flux sensing assembly: As an added service CAPTEC can
vulcanise or clamp heat flux sensors to
mating metal parts. Our specialised equipment
guarantees superior performance.
Ultra thin: the thin flat foil sensing element
transfers heat more efficiently over
its large sensing area and develop less
temperature gradient between the top side
of the sensor and its support
low response time: the thinner , the shorter is the response
time to reach the steady heat flux inside the sensor
No temperature dependence: in the range -200°C - +200°C
Electric resistance : lower than 500 Ohm
Output wires : since a positive or negative
voltage is providesd depending on the heat
flux orientation, no special wiring or referring
junction is required |
Applications:
|
Numerous applications: Heat flux measurement, thermal
process regulation, testing of thermal insulation,
detection of frost/polymerisation/state change….
|
Specifications:
|
Accuracy: Thickness of 0,4 mm, guarantees minimal
disturbance
Sensing Area: Up to several dm square or ft square
(precisely shaped and sized on request)
Operating temperature: from - 180°C to 250°C
(-330F to 500F)
Thermal resistance: 0,006°C/W/m2 or 0,034 F/Btu/hr
ft2
Input range: - 500 kW/ m2 to 500 kW/ m2
Electrical resistance about 100 ohms for a sensing
area of one dm2 (0,1 ft square)
Thermal emissivity : 0,48
Instrumentation: Any voltage measuring instrument
having a 0,1 mV range
Connection: either by welding or by copper Teflon
insulated color coded wires.
Response time: 0,3 sec
Possibility to measure the temperature also with thermocouples
type T integrated in the sensor.
Sensitivity:
|
dimensions( mm ) |
Sensing surface area (cm²)
|
Sensibility
µV/( W/m² ) |
Sensibility
mV/( W/cm² ) |
|
10x10
|
1
|
0,3
|
3
|
|
50x50
|
25
|
7,5
|
75
|
|
100x100
|
100
|
30
|
300
|
|
150x150
|
225
|
67,5
|
675
|
|
300x300
|
900
|
180
|
1800
|
|
|
|