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Air Flow Switch for DC/ AC Voltage Supplies (Type 3201.-/3204.-)
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| Air Flow Switch for DC/ AC Voltage Supplies (Type 3201.-/3204.-) |
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Special Features:
- solid state
- self-contained
- adjustable set-point
- simple to install
- temperature independent
- repeatable alarm
- universally applicable
Switching range :
- Adjustment range: from 1 m/s to 10 m/s
- Set-point ex works: 3 m/s
- Switching hysteresis: < 30 %
- Starting override time: max. 90 s
- Medium temperature: -20 °C to + 70 °C
- 4 °F to +160 °F
- Temperature drift: <0,5%/K
- Accuracy: N/A
- Repeatability: < 3 %
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General Description
vent-captor air flow monitors are solid state switch and
monitoring devices for use in industrial air handling
applications.
vent-captor air flow monitors are self-contained switching
devices without any mechanical moving parts, which
convert flow conditions into electrical switching signals.
vent-captor air flow monitors can be simply installed into
any air flow and perform reliably even under most harsh
environmental conditions.
Typical Application :
vent-captor air flow monitors
can be applied wherever air
operates as an industrial
medium, e.g. air conditioning,
ventilation, air filter monitoring,
extraction fans, blowers, damper
regulators and controlling air
flow rates in energy
conservation systems. The vent-captor
is also ideal for
monitoring air flow in thyristor
cabinets, motor/generators and
shipping containers.
Operating principle:
The vent-captor operation is
based on advanced calorimetric
technology. One of the two
ceramic sensor probes is
slightly heated while an identical
sensor probe tracks the medium
temperature. The heated probe
is cooled proportional to flow
such that the temperature
difference between the probes
is relative to the flow velocity.
This temperature
difference is measured
electronically and converted into
the desired electrical switching
signal.
This thermal principle provides
for a switching delay to permit a
continuous and reliable signal
even under turbulent conditions.
During initial start-up, the ventcaptor
indicates flow for a short
period regardless of the actual
flow condition, eliminating the
need for additional circuit logic.
Electrical Data
Mechanical Data
Dimensions
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