12
If a Remote Optical Sensor or Magnetic Sensor is used to sense one pulse
per revolution (External mode), the readout will display directly in RPM
(FPM) without any adjustment required.
In instances when you can shut down the device and install a piece of
reflective tape, then an optical tachometer is easier to use for RPM
measurement.
Stroboscopes must be used when you can’t shut down
the device.
The human eye is not easily tricked into seeing a stopped
image by a stroboscope when the flash rate is slower than 300 FPM.
Therefore, stroboscopes are just about impossible to use below 300 FPM
for inspection or to measure RPM.
6.0 LAMP AND FUSE REPLACEMENT
6.1 Lamp Replacement
WAR
NING
Before attempting to remove the lamp, make sure the stroboscope
is turned off and any mains cord is removed from the AC outlet.
Allow the lamp to cool waiting at least 5 minutes.
The stroboscope is designed to discharge the internal high voltages within
30 seconds. However, caution should be exercised when replacing the lamp.
T
he lamp can be replaced by using just a pocket screwdriver.
It is not
necessary to remove any screws to replace the lamp.
To change the lamp:
1.
Push apart the two tabs on the side of the reflector housing and remove
the lens using a small screwdriver to help pry one tab and lift the lens.
Take care not to pry the tab any more than is necessary to free the lens.
The reflector is held in place by the front lens and will come loose, but
it is not necessary to remove the reflector.
