Purpose-built with longer one metre segments for heavy duty horizontal installation: soil settlement, rail-line deformation, and pipeline monitoring.
Product supplied by Measurand.
Purpose-built for heavy-duty horizontal measurement: soil settlement, rail-line deformation, and pipeline monitoring. SAAX’s watertight construction combines twist-resistant joints and thick-walled stainless steel segment tubes. The construction contains a compact array of MEMS accelerometers.
SAAX delivers superior cost-benefit returns to project budgets. All ShapeArray™ installations are fast and low-cost, requiring far fewer people than traditional in-place inclinometers. SAAX is rolled off a reel and set into user-installed conduit.
SAAX’s segment length is 1000 mm. SAAX can be manufactured to a maximum length of 150 m. All ShapeArrays are manufactured in an ISO 9001 certified facility.
|SEGMENT LENGTH||1000 mm (Joint centre to joint centre)|
|STANDARD LENGTH OF SAAX||Up to 200 m|
|CUSTOM LENGTH OF SAAX||Over standard length, contact Measurand for details|
|MAXIMUM DIAMETER||24 mm|
|LENGTH OF UNSENSORIZED NEAR CABLE
|LENGTH OF COMMUNICATION CABLE||15 m standard|
|LENGTH OF FAR TIP EYEBOLT||80 mm|
|MAXIMUM TENSILE RESISTANCE||225 kgf|
|MAXIMUM JOINT BEND ANGLES||90°|
|STORAGE TEMPERATURE||-40°C to 60°C|
|INSTALLATION TEMPERATURE||-20°C to 60°C|
|OPERATING TEMPERATURE||-35°C to 60°C polynomial temperature algorithm corrected|
|WATERPROOF TO||2000 kPa (200 m Water)|
|POWER REQUIREMENTS||12 VDC (12–16.5) at 1.8 mA/segment
12 VDC (12–16.5) at 0.4 mA/segment (low power mode)
|RANGE OF 2D MODE (HORIZONTAL)||± 30° with respect to horizontal|
|ACCURACY OF TILT/SEGMENT WITHIN 20° OF
|± 0.0005 rad = 0.029°|
|RESOLUTION1,2,3||0.00067° (0.012 mm/m)|
|SYSTEM PRECISION1,2,3||± 0.5 mm for 30 m SAAX|
|SEGMENT PRECISION3||± 0.0005° (0.01 mm/m) (68% confidence interval)
± 0.0050° (0.09 mm/m) (99.7% confidence interval)
|SENSOR 24H STABILITY4||± 0.01 mm/m (68% confidence interval)
± 0.03 mm/m (99% confidence interval)
1 One-sigma value, based on a six-month horizontal installation. Accuracy value is a function of the square root of length.
2 Value based on Average in Array (AIA) setting of 1000 samples.
3 Sample size for segment precision is 540,000 readings. Data was collected for 3 different positions within +/- 10° of the X, Y,
and Z axes. Figures provided fall within 99.7% confidence interval (3-sigma value).
4 24 h stability is the maximum change in the sensor readings in a 24 h period for an instrument installed in repeatability
conditions. Sample size is 7,200 samples for each 24 h period reviewed.
I’m very happy with the quality of the instrumentation and technical support from RST, as always. They worked with us from the initial stages of the project to ensure that we were fully prepared and equipped to use the RSTAR network for the first time. They delivered everything within the tight project time frame to ensure that there were no delays on site, and the submersible tilt meters looked like new even after over twelve months of being submerged in Thames water!
-Richard Lipscombe, BEng (Hons), Director & Principle Consultant - RL Geotechnical Ltd