Digital Hollow Inclusion (HID) Cell
The HID Cell is a highly accurate rock stress sensor that is built upon the analogue Hollow Inclusion Cell (HI Cell).
Designed to be permanently fixed within a borehole, the HID Cell digitises the strain measured at the gauges, rather than at the end of a multi-strand cable. Consequently, the signal is not degraded and no special loggers are needed.
The serial output can be sent to either a computer, laptop, or logger as required.
Geosystems can supply a data logger capable of acquiring real-time data from up to four HID Cells. The data is saved to a simple CSV file on a USB stick.
Hollow Inclusion (HI) Cell – Analogue
The Geosystems Hollow Inclusion (HI) Cell reliably and accurately determines the triaxial stress in rock and concrete. it is suitable for boreholes in tunnels and other structures.
The HI Cell analogue rock stress sensor required a strain bridge to monitor the read values. We usually advise the use of our digital HI Cell that uses a breakout box and tablet for data logging.