INDUSTRIAL SENSORS AND INSTRUMENTS
|Multiple Sensor Assemblies
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.
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.
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.
Several sensors are
accurately positioned in a stainless steel tube and each sensor is
transitioned to flexible leads. This construction does not require a
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.