ROBWAY RCI-4100, Operation And Installation, Page: 68 / 187

OPERATION AND INSTALLATION
RCI-4100 SYSTEM
MAN-1111 Rev H ©Copyright 2015 LSI-Robway Pty Ltd Page 68
8.3. Sensor Replacement
Whenever a sensor is replaced the displayed calibrated values of that sensor should be checked and sensor
re-calibration completed if required. This applies to all sensors including (but not limited to):
•
Load sensors (tension cells, load pins, pressure transducers, dynamometer beam cells and
compression cells)
•
Angle sensors
•
Length sensors
•
Slew angle and hook height sensors (encoders)
After sensor replacement the following checks should be completed for the affected sensor:
• Tension based system:
o
A known light load (approximately 10% line pull) and a known heavy load (at least 70% line
pull but within current SWL) should be lifted and if displayed load is not within (regulatory,
site, operator or owner) acceptable accuracy then load calibration procedure should be
completed.
•
Load Moment system:
o
Known loads (light and heavy) should be lifted and if displayed load is not within (regulatory,
site, operator or owner) acceptable accuracy transducer calibration should be checked and if
required, transducer calibration procedure should be completed. After calibration light and
heavy loads should again be lifted and if displayed is not acceptable then load moment
calibration procedure should be completed.
•
Angle sensor: The boom angle should be checked at a low and a high angle against a calibrated
angle meter. If the displayed boom angle is not within (regulatory, site, operator or owner)
acceptable accuracy then angle calibration procedure should be completed. Ensure that maximum
and minimum angles are accurate so as not to unnecessarily cause maximum or minimum angle
errors.
•
Length sensor: The boom length should be checked at a short (fully retracted) and a long (extended
at least 50%) length with a tape measure. If the displayed boom length is not within (regulatory, site,
operator or owner) acceptable accuracy at these lengths then length calibration procedure should be
completed.
• Slew angle sensor: The slew angle should be checked at 90deg and 270deg and if displayed slew
angle is not within (regulatory, site, operator or owner) acceptable accuracy at these angles then
slew calibration procedure should be completed.
•
Hook height sensor: Hook height should be checked at ground level then at a high height with a tape
measure. If displayed hook height is not within (regulatory, site, operator or owner) acceptable
accuracy at these hook heights then hook height calibration procedure should be completed.
•
Any other type of sensor should be checked for displayed accuracy at least at one reading, two if
possible and sensor re-calibration procedure should be completed if accuracy is not within
(regulatory, site, operator or owner) acceptable accuracy.