The Roctest PISA-M is a single‑cable in‑place MEMS inclinometer offering high resolution, durability, and configurable gauge length for continuous…
The PISA-M in‑place MEMS inclinometer provides continuous, unattended measurement of lateral displacement in soil, rock and structures. It is suited for slope stability, dam and embankment performance, sheet‑pile and diaphragm‑wall deformation, tunnelling‑induced ground movement, and deflection of laterally loaded piles. The system uses a single serial cable for all sensors, allowing many sensors per borehole and easy reuse on subsequent projects.
Technically, the device is a uniaxial or biaxial tilt transducer with built‑in signal conditioning housed in a stainless‑steel tube. It includes guide wheels for smooth insertion, optional gauge lengths, and a power supply of +8 to +15 VDC. Ordering requires specification of sensor type, gauge length, casing size, and cable length.
| Angular range | ±10° |
|---|---|
| Resolution (Senslog) | 0.0015° |
| Repeatability | 0.0037° |
| Output channels | One or two orthogonal tilt channels, ±2.5 V differential per channel |
| Power requirements | +8 to +15 VDC |
| Housing | Stainless steel, 38 mm diameter, waterproof to 2 MPa |
| Weight | 1.6 kg with sensor and 2 m gauge length |
| Cable length supplied | Sufficient for 3 m gauge lengths |
| Casing size | 70 mm or 85 mm diameter |
| Sensor type | MEMS tilt sensors for inclination readings |
It measures tilt within ±10°.
It offers one or two orthogonal tilt channels with a differential output of ±2.5 V per channel.
The device operates from +8 to +15 VDC.
Yes, the PISA-M can be reused on other projects once the monitoring session is completed.