10
CHAPTER 1
1.1 LOAD
CELLS
AND AIR SENSORS
Vulcan load cells and air sensors are machined from solid blocks of high strength steel. The Strain
gages are bonded inside the load cell or air sensor to sense extremely small dimensional changes in the
material. A strain gage is a precision electrical resistance element. When force is applied to these
sensors, the strain gages stretch or compress, causing a change in output signal voltage. This signal
voltage is measured by the VSL Vulcoder and then used to determine weight.
Example: Vulcan Super - Beam Load Cell
Figure 1-E: Vulcan Super - Beam Load Cell
(Covered by one or more of the following patents:
US Patent RE. 35,301, 4,459,863
Canadian Patent 1,245,677)
June 21, 2006
VULCAN ON-BOARD SCALES 1-800-237-0022
Doc. 44-10032-001 Rev. C
©
STRESS-TEK, INC. 2006
