AF700

AF700

AF700

Product catalog summary
Overview: The document describes the AF700, an advanced instrument designed for determining fusibility temperatures in coal and coke ash samples. It complies with ASTM and ISO standards and features improved operational controls, automatic temperature measurement, digital archiving, integrated safety features, and enhanced robustness.
Specifications: The AF700 operates within a temperature range of 400 °C to 1500 °C with a precision of ±5 °C. It supports a programmable temperature ramp rate from 4 °C to 20 °C/min and can display temperatures in °C, °F, or °K. The maximum sample load is 6 samples per analysis, with a typical cycle time of 4 hours.
Features: The instrument includes a static horizontal furnace with an integrated viewing system and camera. The operating software is user-friendly, allowing for seamless data and image management. The dual-configuration option enables simultaneous analysis of up to 12 samples.
Operation: Ash cones are mounted on a ceramic tray and placed in the furnace. The user selects an analytical method with a predefined atmosphere and ramp rate. A digital camera captures images once the furnace reaches the starting temperature. Image Recognition Functions (IRF) automatically determine fusibility temperatures and can terminate analysis after all deformation points are reached.
Gas and Ventilation Requirements: The system requires nitrogen for purging, air for oxidizing, and CO mixtures for reducing, all at 2.5 L/min at 25 psi. It includes a built-in ventilation system with a 160 ft³/min exhaust capacity.
Safety and Environmental Conditions: The AF700 features a CO monitor with an auditory alarm and automatic gas flow stoppage. It operates within 15 °C to 35 °C and 20% to 80% relative humidity. The sound pressure level is 60 dBa.
Physical and Electrical Specifications: The instrument measures 38 in H x 13 in W x 32 in D and weighs approximately 198 lb. It requires 215 V~ to 260 V~ electrical input at 50/60 Hz.
Part Numbers: The document lists part numbers for different configurations of the AF700, including options with external PC towers and dual furnace configurations.
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Catalog excerpts

AF700-1

AF700 Ash Fusion This state-of-the-art instrument offers you ASTMand ISO-compliant techniques for automatically determining fusibility temperatures in coal and coke ash samples. Improved operational controls, automatic critical temperature measurement capability, digital archiving ability, integrated safety features, and increased instrument robustness are all a part of the AF700’s advanced design. Highlights and Features Prepared ash cones are mounted on the ceramic tray then placed in the static horizontal furnace which features an integrated viewing system and integrated camera. User-friendly operating software allows for seamless data and image management. Optional dual-configuration allows for simultaneous analysis of up to 12 samples. Operating Software

 Open the catalog to page 1
AF700-2

Flow Diagram EXHAUST INTERLOCK SYSTEM NOM FLOW 2L / MIN P 2.0 MICRON FILTER Temperature Range Temperature Display Maximum Sample Load Analysis Time 4 h typical cycle time (depending on ramp rate and temperature range) Image Collection Image Resolution RING LIGHT 1,064 °C ± 5 °C (99.98% pure gold wire sample melting point) Temperature Ramp Rate Temperature Precision LECO’s AF700 is an ash fusibility determinator that automatically monitors ash cone deformation temperatures in coal ash and coke ash. Prepared ash cones are mounted on a ceramic tray and placed into a high-temperature, rampable furnace....

 Open the catalog to page 2

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*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.