This system provides the coal testing laboratory with a convenient and economical means of automatically determining the ash fusion temperatures of coal. The ash-fusion furnace is combined with a solid-state control system and allows up to 9 samples to be tested in one operation. A complete ash-fusion cycle to ASTM D1857 specifications can be run in as little as five hours.

Features

• Combines field replaceable, molybdenum-disilicide elements with low thermal inertia insulation for uniform heat-up and rapid cool-down
• Mounted in a freestanding cabinet.
• Fan-cooled for operator safety and comfort.
• A rear atmosphere inlet tube for the customer-supplied reducing gas system.
• A sliding quartz viewing window
• A solid-state, current-proportioning, temperature controller with a continuous digital-read-out of the furnace temperature, reducing human error in the fusion temperature readout to a minimum.
• A field adjustable, audio signal alerts the operator when the anticipated fusion temperature range is reached.
• The program automatically heats or cools the furnace at preset rate.
• Heating is at a uniform rate of 15ºF (8ºC) per minute; the average cooling rate is appreciably higher.
• No adjustments of power are required during a cycle. Power is regulated by a solid-state silicon-controlled-rectifier module, with automatic current limiting.
• The control system is calibrated at the factory and, normally, does not require adjustments in the field.
• Preiser Scientific: Overall Size, 20”W x 19”D x 22”H

Supplied with

• An installed, Type “S”, control thermocouple.
• A gas flow meter.
• A six-foot power cord with a 230 volt, single phase, three-prong plug.