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ASLT automatic static load test system

The Auto Static Load Test (ASLT) system is purpose designed to control and monitor static load tests automatically.

The ASLT system is supplied with a rugged site notebook, pre-loaded with the ASLT controlling software and calibration for the transducers.

The system incorporates a data acquisition battery back-up, which allows testing to continue in the event of a power failure, without the loss of any intelligence. 

Improved safety features enable you to monitor tests from a safe distance of up to 25 meters, removing the need for operatives to be in close proximity to potentially dangerous, highly loaded system components.

Download the ASLT product data sheet

Benefits of the ASLT system:

  • Wireless remote logging increases the safety of site operatives
  • Supplied with fully calibrated load cell to suit required range
  • Data displayed in real-time
  • Power failure protection
  • User friendly software
  • Customised alarming conditions
  • Easy to handle, rugged equipment
  • James Fisher Testing Services' complete testing package available

All of our equipment is supplied fully calibrated to UK national standards.

ASLT system specifications  
 Acquisition and control unit

Real-time load and displacement display
Safe and automatic logging of data
Automatic application of test load
Rugged site suitable transducers
ASCII output of data
Automatic report generation

Acquisition unit 16 channel DAQ unit - with input/output channels
Data storage Data files are stored to the connected PC as the test proceeds and includes real-time, elapsed time, load, 4No displacement readings, average settlement and rate of settlement.
Full header information is also stored including site, job number, weather, operator, pile number, pile diameter, pile type, working load, max test load, date and start time. 
Load control Voltage output to suitable hydraulic load maintainer
Dimensions L 550mm x W 450mm x D 120mm  
Weight Approx 12Kg
Connectors Waterproof mil spec and rugged Jaeger type - each uniquely marked
Power 110/250VAC inputs
Displacement transducer type 4No linear potentiometer
Displacement transducer range 0-100mm
Displacement transducer resolution 0.01mm
Load cell type Stainless steel, non-indicating compression type, IP68 protected
Load cell range 25 to 1000 Te
Operating temperature -20°C to +65°C
Accuracy ± 0.3% of applied load
Pressure transducer (optional) 0-700bar, IP67 protection, 0.25% accuracy, operating temperature range -20°C to +65°C
Real-time display Average settlement v load curve
Settlement for each displacement transducer
Load v template curve
Rate of settlement
Print output Table: Time, elapsed time, displacements, load and settlement rate
Graph: Applied load v settlement
Graph: Applied load and settlement v time

Data acquisition, pump control and data storage is all controlled by the user friendly ASLT software, and operated within Windows operating systems.

The software enables the operator to set up and save loading templates, as well as review and alter alarm settings accordingly. As the test proceeds the user can view all of the data in real-time and view plots of load versus settlement.

Displacement gauges can be calibrated in-situ with supplied gauge block and re-set remotely. Should the test be halted for any reason e.g. power failure, there are routines which enable the test to recommence without any loss of data.

The load, deflection and load maintainer readings are collected by the ASLT data logger and downloaded to a rugged on site PC. All data is presented in accordance with Eurocode7-EN-1997, the European standard for design of geotechnical structures.

Our user friendly system allows data to be viewed in real-time, comparing plots of load versus settlement as testing progresses. The software enables users to set up and save loading templates, and to also review and alter alarm settings accordingly.

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