inclinometer gauge

Simply put, the inclinometer measures the horizontal displacement distribution along the borehole depth direction and obtains a continuous displacement profile; while the displacement meter (such as a fracture meter) usually only monitors the relative displacement between one or two points. The former is more suitable for analyzing the depth of the sliding surface and the scope of the deformation zone, while the latter is used for monitoring the opening of key cracks. The two are often used together in the same project.

Generally, the measuring range of ±30° can cover most slope and foundation pit working conditions. If the estimated displacement is large (such as deep slippage), the measuring range of ±60° can be considered. In terms of resolution, the reading accuracy of 0.01 mm/m can already meet the requirements of conventional monitoring specifications; if the project is sensitive to early micro-deformation, a higher-resolution probe can be selected. When making actual selection, it is best to refer to the allowable deformation values ​​and warning values ​​given by the design unit.

There are several common reasons: the inclinometer tube is twisted or the bottom of the tube is silted, causing the probe to get stuck; the cable connector has poor contact; the reader battery is low; or the probe is not fully warmed up. It is recommended to first check whether the inclinometer tube is unobstructed, use a steel ruler to measure whether the depth of the probe is consistent with the reading, and then use a set of spare batteries to measure again. If it is still unstable, the electronic components inside the probe may need to be calibrated.

This depends on the interface and communication protocol. Our standard probes use universal four-core or six-core connections, and their outputs are mostly voltage or current signals. Many third-party readouts can also be adapted. However, in order to ensure accurate data and complete functions (such as temperature compensation algorithm), we usually recommend using the original reading meter. If there is indeed a need for mixed use, please inform us of the specific model in advance and we can evaluate compatibility.

A common oversight is that the backfill is not dense, causing the inclinometer tube to bend as the surrounding soil settles, and the data does not reflect true deep displacement. During installation, ensure the verticality of the drill hole, tighten and seal the pipe joint joints with screws, and backfill the space between the outside of the pipe and the hole wall with fine sand or special slurry. The bottom of the pipe generally needs to be fixed to prevent it from floating up. If it crosses multiple strata, it is best to set up segmented grouting outside the pipe to avoid hole collapse.