Swelling Number Index Furnace - SNF

The SNF furnace is designed to test the swelling index number of coal in accordance with the following standard test methods

• BS ISO 501:2012 Hard coal. Determination of the crucible swelling number
• ASTM D720 / D720M – 15 Standard Test Method for Free-Swelling Index of Coal

Standard features

• For testing the free swelling index number of coal
• Also known as the crucible swelling number
• For testing to BS ISO 501:2012 and ASTM D720/D720M-15
• 30mA (RCD) residual current circuit breaker, protects the operator (because the test requires operation with the door open during heating)
• Accurate temperature control from the 132 (PID) controller
• Supplied with wire crucible holder

Options (specify these at time of order)

• A range of sophisticated digital controllers, multi-segment programmers and data loggers is available. These can be fitted with RS232, RS485 or Ethernet communications - more information
• Accessory crucibles and lids available
• Over-temperature protection (recommended to protect valuable contents & for unattended operation)
• Spare parts available separately or in a kit comprising; thermocouple, thermocouple sheath, heating element, solid state relay (SSR) and door insulation piece

_{Content may be subject to modifications or corrections}