Carbolite - Model SNF - Swelling Number Index Furnace

• 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 D720-91(2010)
• 30mA (RCD) residual current circuit breaker, protects the operator (because the test requires operation with the door open during heating)
• Precise PID temperature control using 2132 controller
• Supplied with wire crucible holder

• Accessory crucibles and lids available
• A range of sophisticated digital controllers, multi-segment programmers and data loggers is available. These can be fitted with RS232, RS485 or Ethernet communications
• 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

SNF

• Max temp (°C): 900
• Maximum continuous operating temp (°C): 850
• External crucible height (mm): 26
• External crucible diameter (mm): 41
• Internal crucible diameter at the base (mm): 11
• Dimensions: External H x W x D (mm): 330 x 410 x 300
• Thermocouple type: K
• Max power (W): 800
• Power supply: 220V - 240V, 50-60Hz, single phase and neutral, with protective earth (ground) connection
• Weight (kg): 26