INDUSTRIAL SENSORS AND INSTRUMENTS
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Multiple Sensor
Assemblies
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Temperature profiling is important whenever multiple points
of measurement are required over a broad measuring range.
Multiple Sensor Assemblies or Multipoints as they are commonly
referred to can be designed with using either thermocouples
or RTDs and in some cases both. As illustrated above, secondary
seals can be supplied for even greater safety assurance.
These seals prevent process fluids or gasses from escaping
in the event of a process upset. In critical applications
component testing is recommended. Dye penetrated, X-ray,
and hydrostatic testing are standard available tests.
In order to be effective these assemblies must be able to
provide temperature point location with a tolerance of plus
or minus .25 inches and comparable sensor accuracy throughout
the entire measuring range. Our unique cross calibration
method and positive point identification assures like sensor
accuracy and accurate and safe performance.
2020
Sensors are installed into guide tubes which are terminated
at the hot end into heat transfer blocks. These blocks are
welded into the wall of the protection tube at the required
points along the well. This facilitates faster response
time, improved accuracy and positive point identification.
Individual sensors can be removed while the unit is operating
and without disrupting the process. This design lends itself
to insertion in a secondary seal construction.
2030
This
design maintains positive sensor contact to the inside wall
of the protection tube for improved accuracy and response
time. The sensors can be installed as a bundle with a support
strip or individually. Sensors can be individually replaced.
2040
Several
sensors are accurately positioned in a stainless steel tube
and each sensor is transitioned to flexible leads. This
construction does not require a protection tube.
2050
Each sensor is inserted into a guide
tube and is individually spring loaded to provide good
metal to metal contact with the measuring location. Sensors
are easily removed without process shutdown.
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