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FLOW - INDUSTRIAL/MARINE |
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Active air speed transmitters for ducts
Air speed, temperature and relative humidity.
Analog output 4…20mA or 0…10Vdc.
There are several Probe type lengths available.
The FXT transmitters are employed to
control air speed in air conditioning and ventilation systems (HVAC
/ BEMS) in the following sectors:
pharmaceutical
museums
clean rooms
ventilation ducts,
industrial sectors
crowded places
cafeterias
auditoriums
gymnasiums
farms with large numbers of animals
farmaceutisk
muséer
rena rum
ventilationskanaler
industrisektorer
fullsatta ställen
cafeterior
hörsalar
idrottshallar
gårdar med ett stort antal djur |
FXT |
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FTH |
FTT |
FXT |
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Datasheet |
Datasheet |
Datasheet |
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The sensors in combination with an accurate
electronics guarantee precise and reliable measurements over time.
The sensor for air speed is a thin film, the
probe sheath is AISI304, the filter for relative humidity of 20μ
wire mesh, materials that can be used in hostile areas.
There are two possible installations: in the FXT version, the
horizontal probe is joined to the electronics enclosure while in the
FZT version the probe is conconnected to the electronics through a
cable.
In the FXT version, the duct probe is fixed to the electronics
enclosure and it is available in three different lengths.
To fix the probe to the duct, you can use, for example, the MFC
flange, a 3/8” universal biconical connection or a PG16 metal cable
gland (14mm).
In the FZT version, the probe together with the sensors is
equipped with a cable which can be 2.5 or 10 meters long.
The probes are available in three different lengths
and several different models.
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Airspeed measurement with the FXT
serie analog output 4-20mA or 0-10Vdc
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Airspeed and Temperature measurement with the
FTT serie – analog outputs 4-20mA or 0-10Vdc
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Airspeed, Humidity and Temperature measurement with the
FTH-serie serie – analog outputs 4-20mA or 0-10Vdc
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High Precision Air/ Gas Velocity Transmitter
The air velocity transmitters were developed to obtain
accurate measuring results over a wide range of velocities and
temperatures.
A high-quality hot film sensor element based on cutting- edge thin
film technology ensures maximum sensitivity, even at lowest mass
flows.
At the same time, the innovative probe design produces reliable
measuring results at high flow velocities of up to 40m/s.
The integrated temperature compensation minimises the temperature
cross-sensitivity of the transmitter series which, combined with the
robust mechanical design, allows it to be used at process
temperatures between -40 to
+120°C.
In addition to air velocity and temperature
values, the transmitter calculates the volumetric flow rate in m³/h
or ft³/min. The cross section of the duct needs to be
determined for this purpose and the volumetric flow rate can be
displayed and directed to one of the analogue outputs.
The transmitters can be used to measure the velocity of other gases as
well, although a correction has to be applied to the unit at the
factory.
Technical data
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Measuring range:
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0...2m/s
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0...10m/s
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0...40m/s
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-40...120°C
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Response time: < 1.5s...40s (can be
configured)
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Outputs: freely scaleable in the ranges
of
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0...10V and
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0...20mA (e.g. 4...20mA)
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Accuracy:
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+/-0.05m/s
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+/-0.1m/s
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+/-0.2m/s
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+/-0.5°C
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Supply: 24Vac/dc
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Operating range: 0...40m/s
(0...8000ft/min)
-40...120°C (-40...248°F)
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Pressure-tight models up to max. 10bar
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Model B |
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Model C |
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Model E |
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Datasheet |
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