- Piezometers (8)
- Inclinometers and Tiltmeters (29)
- RDS Railway Deformation System (7)
- Pendulums (1)
- Settlement Gauges (10)
- Pressure cells (5)
- Load Cells (3)
- Extensometers (2)
- Crackmeters and Jointmeters (1)
- Strain Gauges and Thermometers (3)
- Readout units and dataloggers (49)
- Cables, Accessories and Software (2)
Strain Gauges and Thermometers
The cable lengths depend from many factors, first of all installation and cable protections (screen, earth, etc...). Assuming that instruments are installed in a workmanlike, for the maximum cable lengths should be followed the next suggestions:
DIGITAL INSTRUMENTS: see FAQ#073
ANALOGUE INSTRUMENTS: see both documents:
Cable length guide line with internal multiplexers
Cable length guide line with external multiplexers
FAQ#029 - What is the Real Gauge Factor reported in the Specifications and Compliance Certificates of both VW embedded and arc-weldable strain-gauges?
The gauge factors for VW strain-gauges are generic factors calculated from the dimensions and the physical properties of the gauge material. The VW strain-gauges arep roduced in series with industrial method, so each strain gauge is equal to the other: it means that the gauge factor of VW strain gauges do not change.
The Gauge Factor is checked on some strain gauges from each manufacturing batch.
FAQ#028 - Are the vibrating wire strain-gauges and spot weldable VW strain gauges equipped with temperature sensors?
Yes, vibrating wire strain-gauges, as well as all other Sisgeo's vibrating wire instruments, are equipped with a built-in NTC thermistor YSI 44005 type (3000 Ohm at 25°C). Thermistor is included in the instrument price and therefore there is not additional cost for it.