Ro Scientific RS-MP01V
2D Probe Permeameter

Smart steady/unsteady state measurement switch.
2D arbitrary and predefined pattern measurements.
Visible and fluorescent* high resolution scans.
Automatic sample's edges detection.
Samples as large as 1000x150x150.
Fast (2s to 20s per measurement).
Accurate (better than 0.5%RD).
Wide range (1µD to 1D).
IoT control via WiFi.

* For models provided with UV light torch.

Ro Scientific introduces the first fully automatic, dual steady/unsteady state probe permeameter. This state of the art machine was specifically designed to increase both speed and precision of gas permeability measurements in core samples (whole or slabbed cores, slabs as well as other types of samples).

The system consists of an intelligent X-Y measurement table, designed to operate as an autonomous drone and a 10" touch screen remote control. The two communicate to each other wirelessly from a distance of up to 10m. Nevertheless, the communication protocol is TCP/IP based so the communication between drone and the remote control could be easily extended via internet if necessary. The operator could even use the drone’s on-board high-resolution camera to remotely inspect the sample and with the assistance of the laser beam that fires from within the probe tube the operator could precisely select a particular spot on the surface of the sample as a measurement target in the arbitrary pattern measurement mode.

Although the operator has the option to go with (assisted) manual mode, a great deal of effort was put into the design of this system to allow a fully automatic process. In this mode, from user perspective, the whole measurement sequence resumes to something as simple as pushing a start button. Once the process is triggered, as a first step, the drone uses its camera to scan the sample at a speed of about 50mm/s. The machine vision module computes the edges of the sample placed on the measurement table and also determines if the sample is a slab / slabbed core (flat measurement surface) or a whole core (cylindrical surface). The preselected (1mm to 100mm) grid is then applied and the injection head moves X-Y and pick the measurement points one-by-one. Once a particular measurement position is reached the pneumatic cylinder pushes the injection head against the sample surface. Within 2s the system determines what measurement method (steady/unsteady state) is most suitable in order to achieve the most accurate permeability measurement at a specific point. The process is then repeated until all the measurement points are depleted.

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Structural Design
All the structural components have been fine machined out of industrial grade anodized aluminum and stainless steel and were designed to withstand vertical static stresses in excess of 3000N and horizontal/torque stresses well beyond anything encountered during normal operation. Moreover, all moving parts run on self-lubricated linear ball bearing blocks while the stepper transmission belts were made out of high grade silicon rubber reinforced with carbon fiber in order to minimize the overtime XY positioning decalibration. All in all, this is a build to last, with a minimum 5 years of maintenance free daily operation.

Ro Scientific
Despite its complex, distributed architecture, the software exposes an easy to use and intuitive user interface yet powerful enough to allow the operator to control every single step of the process if such a thing is desired. The code was developed by Ro Scientific from ground up. This means we are in full control of the code in case we need to customize it to fit better our customers' specific needs.

Data Acquisition
For acquiring the process parameters like the injection gas pressure, temperature and flow the system relies on an array of metrological grade sensors backed up by a high resolution (24bit) data acquisition module that is capable of reading the sensors’ output up to 10000 times per second.

Permeability Computation
The permeability is calculated based on an optimized version of Goggin formula, that takes into account the rather complicated geometry of gas flow in the sample around the injection probe. In order to improve even further the precision of the method, the injected gas (N2) viscosity is dynamically computed as a function of the measured gas pressure and temperature at the time of permeability computation.

Data Output
The measurement results could be provided in a variety of formats, like tabular text or binary, contour maps or any custom format that would fit the customers' needs, along with high resolution full sample scans in visible and/or UV light.

For more information about this product please contact us.