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AB, W, X
Product Series
Set Point Range: 0°F - 1850°F (depending on model)
Rod
and tube switches utilize the differential expansion of two
metals to operate the contact mechanism. The high expanding
tube pulls the low expanding rod down in the switch, providing
travel to cause the switch circuit to change state. Fine calibration
is accomplished by adjusting the contact spring position with
the calibration screw, which is sealed and locked in place.
Both the rod material and the tube material can be varied
for sensitivity or differing response times in a given temperature
range. Since the entire probe is temperature sensitive, it
acts as an averaging device, thus compensating for temperature
gradients.
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How
CPI Rod & Tube Thermal Switches Work:
Anatomy
of the Rod & Tube (x series shown) |
Factory
calibrated: CPI Rod and
Tube switches are factory calibrated at any temperature within the
range of 0 to 1850F. They can operate in probe ambient temperatures
from –65 to 2000F, and show excellent resistance to momentary
overshoots.
Immune
to problem environments: Sealed for protection against
the effects of moisture, sand and dirt, these Rod and Tube thermal
switches are also designed to withstand severe shock and vibration
with no shift in calibration.
Applications:
CPI Rod and Tube thermal switches are used in harsh applications
such as jet engines, gas turbines, ram air temperature systems,
after-burners, railroad switch deicers, diesel stack over-heat sensors,
extruders, flame detectors and electronic heating and cooling systems.
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