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 STRIKER
SENSOR
The
Exline Striker Sensor is used primarily in sensing the
temperature of connecting rod bearings and other moving
engine parts. The Striker Sensor is made of stainless
steel for positive service in corrosive environments.
The Striker Sensor contains a temperature sensitive fuse-metal
collar which holds a spring-loaded plunger in position.
The collar is made of specific quantities of special metal
alloys which melt at a predetermined temperature. The
Striker Sensor is installed with the fuse-metal end closest
to the bearing or temperature-producing area. A break-off
dowel or trip valve is mounted directly in line with the
Striker Sensor at a stationary point and connected to
the pneumatic or hydraulic control media via tubing.
Clearance is set so that the Striker Sensor passes the
break-off dowel or trip valve on each revolution. If an
excessive temperature buildup occurs in the protected
area, the fuse-metal collar melts. The plunger then strikes
the break-off dowel, trip valve, or electronic trip switch.
A pressure drop in a pneumatic or hydraulic control system
or electronic signal results. This pressure drop can be
used to shut down the equipment or sound an alarm.
The fuse-metal collar can be economically and quickly
replaced at our factory. The break-off dowel is easily
removed and replaced.
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| Standard
Sizes in Stock
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| Length
(L) |
Striker
Part No. |
*Striker
& Break-off
Dowel Assembly Part No. |
**Striker
& Trip
Valve Assembly Part No. |
| 1.5" |
300303 |
310303 |
320303 |
| 2.0" |
300304 |
310304 |
320304 |
| 2.5" |
300305 |
310305 |
320305 |
| 3.0" |
300306 |
310306 |
320306 |
| 3.5" |
300307 |
310307 |
320307 |
| 4.0" |
300308 |
310308 |
320308 |
| 4.5" |
300309 |
310309 |
320309 |
| 5.0" |
300310 |
310310 |
320310 |
| 5.5" |
300311 |
310311 |
320311 |
| 6.0" |
300312 |
310312 |
320312 |
| 6.5" |
300313 |
310313 |
320313 |
| 7.0" |
300314 |
310314 |
320314 |
| 7.5" |
300315 |
310315 |
320315 |
| 8.0" |
300316 |
310316 |
320316 |
| 8.5" |
300317 |
310317 |
320317 |
| 9.0" |
300318 |
310318 |
320318 |
| 9.5" |
300319 |
310319 |
320319 |
| 10.0" |
300320 |
310320 |
320320 |
| *Assemblies
include brass break-off dowel, adjusting
stud and nuts, or trip valve. To order
brass dowels separately, order Part
No. 300116. Aluminum break-off dowel
Part No. 300105, available on request.
**To
order trip valve assembly separately,
order Part No. 310150. Non-stocked
sizes available on request. Allow
for additional delivery time. |
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|
| How
to Order
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| Determine
length of striker and temperature desired.
Show part number and temperature.
Example: #300308 - 205°
|
| Available
Fuse Collar
|
| Melting
Temps |
|
117°F |
178°F |
243°F |
349°F |
449°F |
|
136°F |
198°F |
255°F |
361°F |
478°F |
|
142°F |
205°F |
281°F |
374°F |
|
|
150°F |
217°F |
291°F |
390°F |
|
|
162°F |
228°F |
310°F |
408°F |
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| When ordering, specify one of the temperatures listed |
|
| Typical
Areas Protected by the Striker Sensor
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| ·
Power Rod Journal |
| ·
Compressor Rod Journal |
| ·
Crosshead Pins |
| ·
Skirt of Piston* |
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|
| *Used
as part of Dual Sensor |
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Details
of Installation
A 7/16" diameter hole is drilled through the cap
or rod. Then the hole is counter-bored 9/16" to within
5/8" of the bottom. This can be done in one operation
with a step drill. The remaining 5/8" of depth is
threaded with 1/4" n.p.t.
The striker body is then installed in the hole. (See Drawing.)
It should be torqued to a maximum
of 35 foot-pounds. The fuse-metal end should be
1/8" to 3/16" from the back of the bearing.
Use a bracket to mount the break-off dowel or trip val ve
on a common centerline with the
striker sensor.
Adjust clearance to 3/32" with break-off dowel or
trip valve arm directly in line. Then connect the break-off
dowel or trip valve to control media with tubing and fittings.
Heavy wall brass or stainless steel tubing is recommended.
The proper bracket, fittings, and hardware can be supplied
by Exline for your particular engine.
Crosshead Pins
The device is installed in the end of the crosshead pin
as near the center as possible. Drill the combination
7/16" x 9/16" hole, to receive the sensor, approximately
halfway through the length of the pin. The 7/16"
bore should be tapped with an extra length tap (1/4 n.p.t.).
The sensor is then ready to be installed and torqued to
35 foot-pounds.
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