Because of their unique process insertion mechanism that does away with the traditional tee or elbow,
Keyhole™ sensors are able to be placed in locations conventional RTDs or thermocouples cannot.
Difficult Locations such as long straight runs, vertical runs, bends, a vessel wall, etc are all possible
without compromising hygienic performance.
The lack of any process dead-leg also allows Keyhole sensors to be installed in any orientation - pointing up,
down, 45o, vertical or horizontal - and in almost any location according
to the space available without impacting their hygienic performance.
High Pressure Operation
Because of the unique way that the Keyhole seal works, the sensors are also excellent for
higher pressure environments. All models operate leak-free up to 750psig (50Bar).
The Small Bore Sensors and Fittings operate as high as 3,000psig (200Bar).
Small Bore Installation
Because traditional RTDs require a minimum insertion depth to maintain their accuracy,
their size becomes a greater proportion of the pipe size the smaller the pipe becomes.
Using the Low Flow Obstruction tip design, Keyhole sensors can be made to fit pipe sizes
down to 0.5" (13mm) ID with minimal obstruction.
Tank or Vessel Installation
The Low Flow Obstruction tip profile style of probe can also be used for measuring product
temperature adjacent to the internal wall of a batch processing tank or vessel. The very
short immersion depth required for the probe avoids interference with any rotating agitator
blades, while remaining thermally isolated from the temperature of any heating jacket on the vessel.