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열유속
측정센서
WATER
COOLED HEAT FLUX SENSOR (SBG-01-ATX)
SBG-01-ATX
Water cooled Heat flux sensor according to
SCHMIDT-BOELTER
SBG-01-ATX is a water-cooled heat flux sensor.
Its main purpose is the study of fire and flames, applied in flammability tests
and smoke chamber tests. SBG-01-ATX measurements are in accordance with ASTM E
622-83, as well as ISO 5658, 5560 and 17554 standards.
- Figure 1.
SBG-01-ATX top
view. Dimensions in mm.
- Below: SBG-01-ATX
Schmidt-Boelter / Gardon gauge. Heat flux sensor (1), water cooling (2,6), gland
(4), cable (5).
- Standard cable
length is 2 m.
-
- SBG-01-ATX serves to
measure the heat flux of fire and flames in the range up to 200
kW/m2.
- Heat flux sensors
of this type are originally designed to work in an environment that is dominated
by radiation. Application in environments with much convection should be done
with care.
- Working completely passive, using a thermopile
sensors, SBG-01-ATX generates an output voltage proportional to the incoming flux.
The sensor is water cooled.
- There are 6 types of SBG-01-ATX; the differences
are in the working range, sensitivity and response time.
-
- Comparing to traditional Gardon and Schmidt
Boelter gauges, SBG-01-ATX has several advantages:
- water supply tubes with increased
robustness
- very robust stainless steel outer
housing
- increased scratch resistance of absorber
paint (slightly lowered surface)
SBG-01-ATX SPECIFICATIONS
- Temperature range cooling water: 10 to +30
oC
- Cooling water flow: > 10 liter/hr,
preferably 30 liters per hour @ 3 bar (normal tap water)
- Working ranges kWm-2: 5, 10, 20,
50, 100, 200
- Response times: Working range 5, 10
kW/m2: < 450 ms (63%), Working range 20, 50 kW/m2: <
250 ms (63%)Working range 100, 200 kW/m2: < 200 ms
(63%)
- Maximum range: 150% of working
range
- Output signal: > 5 mV at working
range
- Spectral range: to 50.000 nm
- Field of view: 180 degrees
- Emissivity: > 0.95
- Calibration traceability: NIST
- Order Code: SBG-01-ATX/RANGE/ cable
length
OPTIONS
Additional cable length x metres (add to 2
m)
ORDERING
- Order Code: SBG-01-ATX/RANGE/ cable length
- Range 5, 10, 20, 50, 100, 200
kW/m2, cable length in meters. Example: SBG-01-ATX/50/2
SEE ALSO
- Portable version: HF03
- For separate measurement of radiative and
convective heat flux model RC01 can be used.
- LICHTZEN
AE / AITNIX also manufactures highly robust heat
flux sensors for use in boilers such as RHF01, and for flare monitoring such as
HF02.
Cooling
- Typically cooling water can be supplied from
the tap. If it is impractical to use tap water, for passive closed circuit
cooling of SBG-01-ATX, LICHTZEN AE / AITNIX successfully employed the Zalman
reserator.
- Closed circuit water cooling with convective
heat exchanger.
-
Figure 2: Close up of the convective
cooling of the reserator.
Figure 3: Coupling of cooling tubes to
the reserator
CALIBRATION
- AITNIX manufactures calibration equipment
that will make comparison to reference sensors relatively easy.
- The picture shows CU02 calibration unit for
heat flux sensors.
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