The RHF series consists of heat flux sensors designed for studies of fouling
behaviour during combustion processes. A RHF
is meant to be part of
so-called “deposition probes” or “fouling sensors” (typically designed by the
user) in slagging and fouling experiments. A typical sensor actually contains 4
separate heat flux / temperature sensors, so that directional fouling
information can be obtained as well.
Figure 1
Example of RHF01 ring heat flux senor consists of four temperature / heat
flux sensors (1), in a stainless steel housing (2), with either flat connection
for welding- (3) or alternatively threaded connections (4). Metal sheathed wire
(5) is usually extended with Teflon wire (7). The sensor is typically
incorporated in so-called deposition probes. Cooling should be provided by
either air or oil. Dimensions in the drawing are only serving as example. All dimensions are in
mm.
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brochure (PDF) click here.
INTRODUCTION
- RHF-series has been designed to be used in
scientific as well as operational experiments to study fouling behaviour.
- The user can build his own deposition
probe or fouling sensor, and use a RHF (or an adapted version of it) as a
building block.
In practice many RHF sensors are built into probes that also
measure temperature and take gas samples (so-caled suction probes).
-
RHF’s can be supplied in many different dimensions.
Compared to traditional deposition probe
designs, advantages of a RHF are that it can provide “directional” information,
and that calibration is no longer an issue. The latter is done at the
manufacturer. In addition the calibration is far better under control (even
traceable) and response times are faster.
RHF01 is provided with 4 calibration
constants; one for every sensor.
SUGGESTED USE
MORE INFORMATION / OPTIONS
- Hukseflux is specialised in manufacturing
of slagging and fouling sensors; the design can be adapted according to
customer’s requirements.
- Hukseflux can also build the entire
deposition probe.
RHF TYPICAL SPECIFICATIONS
-
Sensitivity (nominal): 4 μV/kWm-2
-
Temperature range
(sensor including metal sheathed cable): to +800 °C
-
Temperature sensing (T): thermocouple type K
-
Calibration traceability: NIST
-
Response time (typical): 120 s (90%)
-
Cooling: air or oil (user responsibility)
-
Dimensions: according to customer
specifications
