About the MIC SAS II

The system includes an anvil and piston inside a steel, open-ended sample tube. The piston and anvil have O-ring seals against the inside of the tube. A brass plug covered with filter paper is placed on the anvil, the sample tube is positioned over it, a powdered sample is loaded into the tube, and a second brass plug with filter paper is placed on top of the sample. The piston is driven down by a stepper motor to compress the sample. Constant head pressure is maintained throughout the analysis by controlling the flow rate with a mass flow controller (MFC). After passing through the sample, the gas passes through a flow restrictor to maintain some back pressure. Particle size is calculated from the differential pressure across the sample according to the Kozeny-Carman equation. Ambient temperature is used to calculate air viscosity, which is used in the particle size calculation.

The emergency stop button powers off the stepper motor in case of an emergency.

A safety shield is placed around the piston and anvil area during operation.

Front Panel

Front Panel Components

Component	Description
Anvil	Supports and seals the bottom of the sample tube.
Emergency stop button	Powers off the stepper motor but leaves the computer and application running. The touchscreen will remain on. Use of this button requires a reset to restore power. To reset the instrument, gently pull the emergency stop button until a click is heard.
Piston	Seals the top of the sample tube.
Safety shield	Covers the exposed moving parts of the piston and anvil.
Touchscreen	Touchscreen to run analyses and review/edit records.
USB port	The USB ports on the front and back of the instrument can be used interchangeably, however, to prevent wires from interfering with the operation of the instrument, use the USB port on the back for devices with cords. The USB ports can be used to connect a printer or keyboard, export and import data, and update software.

Back Panel

Back Panel Components

Component	Description
Ethernet ports (2)	Left port. Used to connect the instrument to a network or directly to a computer. Right port. Used to connect to other devices on the same network or to share an internet connection between devices.
Gas inlet	For attaching the analysis gas.
5 mm DC power jack	For an external power supply.
Shelf for external power supply	For external power supply storage.
USB ports (2)	The USB ports on the front and back of the instrument can be used interchangeably, however, to prevent wires from interfering with the operation of the instrument, use the USB port on the back for devices with cords. The USB ports can be used to connect a printer or keyboard, export and import data, and update software.