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Operation, Calibration & Service Manual LinkBelt - DS350 1334 Console
9 Calibration
General Information
A calibration is required to define the load, radius, and boom angle for a specific crane configuration.
The calibration adjusts boom weights, deflection, and offsets in main boom and extension
configurations, which will be used to calculate the load moment to aid the operator in determining the
crane limits for the specific operating configuration.
This calibration procedure must be completed when a new boom configuration is assembled and the
new configuration has not been stored in memory. The DS350 modular system will automatically enter
the calibration mode when an operating configuration has been selected that is not stored in
calibration memory.
NOTE: The zero setting of the force transducer requires that the pendent be disconnected, so
there are no external forces on the transducer.
What must be calibrated?
Any main boom length that will be used during crane operation, lengths must be in increments as
defined by the load chart. It is best, when assembling the boom you use manufacturing guide lines, or
if no guide lines exist, assemble the boom starting with the heaviest sections at the boom base and
the lighter sections added at the boom tip.
NOTE: If the main boom is built with the same sections but in a different order as previously
calibrated, this is a new configuration and must be calibration.
Adding an auxiliary boom extension to a calibrated main boom length does not require calibration.
However, if the new main boom length requires calibration and a tip extension will be use, calibrate
the main boom with the tip extension.
Any main boom length, jib l
ength, and offsets used during crane operation (i.e. 60’ main boom, 40’ jib,
or 30˜ of fset is one calibration), if either the main length, jib length, or jib offset is changed and the
calibration is not stored in memory, the configuration must be calibrated. However, the main boom
with the jib erected but not used can be calibrated separately from the jib.
Material required for calibration:

Calibrated inclinometer (for setting boom angle)

Known loads, weight is depended on configuration, loads should be within 50 to 75% of max load
for the defined radius.

Tape measure (to measure the radius of the block/ball)
Calibration memory
Calibration memory stores the last five calibrations, the sixth calibration will replace the least used or
oldest calibration.