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The sensor probe can
be mounted to the workpiece with any of the following attaching devices. All
attaching devices are not applicable to all sensors. Each sensor illustration
on the following pages lists only the attaching devices appropriate for that
sensor. |
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Fixed
Bayonet |
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A spring loaded
locking cap held lin a fixed position on the probe tube between two rings
formed ("popped") on the tube surface. The locking cap attaches to an adapter
that is mounted to the workpiece. Various adapters are illustrated under
"Accessories" at the end of this section. |
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Adjustable Bayonet |
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This device can be
fitted over any 1/8" o.d. plain end thermocouple and adjusted to the selected
immersion depth by tightening the compression fitting. With a suitable adapter,
any immersion depth over 1/2" can be selected. |
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The fitting is shipped
with both a nylon and brass ferrule. Nylon permits readjustment, but should not
be exposed to temperature over 250°F. The brass ferrule cannot be adjusted
after it is set. It is suitable for temperatures up to 900°F. |
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Varidepth®, and Spring Style Varidepth |
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Varidepth is a trade
marked mounting device that uses a bayonet type locking cap, and which is
applicable to two different sytles of thermocouples; flexible armor clad, and
spring clad. Each of these protection clads is compressible and therefore
provides the pressure needed to hold the thermocouple tip snugly in the
workpiece. |
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Adjustable Bushing |
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This 1/8" NPT mounting
bushing is held in position on the probe with a brass compression ring secured
with a compression nut. Once installed, the compression ring cannot be
relocated. The mounting bushing and compression nut are available in nickel
plated brass, or stainless steel. |
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Brazed
Bushing |
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This 1/8" NPT mounting
bushing in brazed to the sensor probe at the "U" dimension specified on the
order. |
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Threaded
Adapter |
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To determine the nominal adapter
length, proceed as follows: |
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Adapters with 1/8 NPT: "Z"
dimension minus hole depth, minus 3/8" |
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Adapters with 3/8-24
thread: "Z" dimension minus hole depth minus 1/4". |
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Round the adapter
length up to the nearest 1/8". |
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Pipe
Clamp Adapter |
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This adapter can be
used with thermocouples with bayonet lock to measure tube or pipe surface
temperatures. The thermocouple is in direct contact with the pipe. |
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The adapter is
available with the "L" dimension in 1/2" increments beginning with 1-1/2". The
"L" dimension of the adapter should be approximately 9/16" shorter than the "Z"
dimension of the probe. |
