SISGEO

Electric Anchor Load Cells

InfrastructureGeotechnical Instrumentation

The Electric Anchor Load Cells consists of a ring-shaped stainless steel body which incorporates from 8 to 16 electrical resistance strain gauges in full bridge configuration. This configuration allows low sensitivity to eccentric load. Typical applications include performance testing of anchor systems in tunneling or deep excavations. The cell design minimizes the sensitivity to the eccentric load. Anchor load cells are available in a variety of ranges and diameters. A very stiff distribution plate is supplied, in order to ensure that the load is applied equally over the annular loading surface of the cell. More info.↗

Quantity

Specification

Model	Standard Model	Extended Temperature Model
Full scale capacity kN	from 300 to 2500 kN	from 300 to 2500 kN
Overload	1.5 X Full scale	1.5 X Full scale
Repeatability	< ±0.02% FS	< ±0.02% FS
Stability @1 year	±0.05% FS	±0.05% FS
Accuracy Pol. MPE	< ±0.5% FS	< ±0.5% FS
Thermal zero shift	< 0.005% FS / °C	< 0.005% FS / °C
Signal output	1.5 mV/V at FS 2.0 mV/V only for 2500 kN FS	1.5 mV/V at FS 2.0 mV/V only for 2500 kN FS
Power supply	from 5V DC to 10V DC	from 5V DC to 10V DC
Bridge resistance	700 Ω FS from 300 to 750 kN (8 strain gauges) 1400 Ω FS from 1000 to 2500 kN (16 strain gauges)	700 Ω FS from 300 to 750 kN (8 strain gauges) 1400 Ω FS from 1000 to 2500 kN (16 strain gauges)
Operating temperature range	-20°C +70°C	-30°C +70°C
Compensated temperature range	-10°C +40°C	-30°C +70°C
Temperature effect on zero	< ±0.002% FS / °C	< ±0.002% FS / °C
Temperature effect at FS	< ±0.002% FS / °C	< ±0.002% FS / °C
Body material	stainless steel 17-4 PH	stainless steel 17-4 PH
Protection	IP68 up to 100 kPa	IP68 up to 100 kPa