The instrument applies cyclic stress on a sample and measures the pore structure characteristics after a desired number of cycles. The stress cycles and testing after any desired number of cycles are automatically continued.

The instrument applies cyclic stress on a sample and measures the pore structure characteristics after a desired number of cycles. The sample is loaded in the sample chamber and is subjected to stress cycles in the specified stress limits. At the end of the desired number of stress cycles, the pressure of a non-reacting gas on one side of the sample is increased to initiate gas flow through pores. The gas pressure and flow rates are measured. The pores in the sample are spontaneously filled by a wetting liquid. The gas pressure and flow rates are measured through the wet sample. After acquisition of data, the sample is re-wetted and again subjected to cyclic compression. Pressure and flow rates are measured after the desired number of cycles. The test is continued to acquire data as a function of number of stress cycle.

 · After desired number of stress cycles: automatically interrupts analysis, performs tests, acquires data, continues to cyclically stress the sample
· Very little operator involvement
· Operator adjustable: stress limits in a cycle; number of cycles after which data is to be acquired ; stress free duration for data acquisition ; total number of cycles.
· Concurrent measurement of compressive stress in the sample as a function of stress cycle.
· Windows based simple operation.