The Global Leader in Coal Ash Analysis. GammaScan Online Coal Ash Analyser provides instantaneous, continuous, on-belt Ash-in-coal data for real-time control of plant operations.
GammaScan On-line Coal Ash, Moisture & Calorific Value Analyser
RTI customers count on the GammaScan and GammaScan Duo for greater control over ore and other materials – assuring product delivery to within 1% of the desired set point to achieve the fastest and most accurate on-belt ash, moisture and calorific value analysis without the use of a radioisotope.
GammaScan Duo provides accurate real-time information for continuous quality monitoring and allows control-room operators to optimise the plants process.
State-of-the-art natural gamma measurement and microwave technologies will give customers better visibility and control over product grade, saving millions in penalties and helping prevent breakdowns, while maximising productivity.
This technology has applications across coal mining, sorting, washing and blending and cleaner power generation. In addition, it finds use in protection at the infeed of food production milling facilities.
GammaScan – DUO
Where a radiation source is not an option, the GammaScan is that solution.
Select Industry
GammaScan
Where a radiation source is not an option, the GammaScan is that solution.
Select Industry
World Most Advanced Ash, Moisture and Calorific Value Analysis – GammaScan Online Coal Ash Analyser
The world’s most advanced analysis of ash, moisture and calorific value, delivering higher yields, increased returns, and lower costs for your operation.
• World-best analyser innovation
• Simple, intuitive calibration
• Lowest cost of operation in the market
• Maximise output, minimise downtime and costs
• Shore up the site and resource sustainability
Laboratory analysis only provides a “snapshot” or an “average” of coal quality; it does not show the actual variations. By the time the laboratory results are available, thousands of tons of material have already been conveyed. GammaScan provides real time data that can immediately drive decisions (such as bypassing or washing coal) and directly save money.
The GammaScan Coal Ash Analyser is an on-line “natural gamma” ash monitoring system that is easily installed directly under conveyor belts. The system does not contain any nucleonic sources and therefore does not require a radiation licence.
GammaScan Coal Ash Analyser measures the low levels of naturally occurring gamma radiation in the coal transported on a conveyor. This radiation mainly arises naturally from elements like U, K, and Th in coal. The amount of these elements present has been shown to correlate well with the amount of the main Ash forming elements (Si, Fe, Al, Ca), and so the gamma count rate relates to ash content.
Combined coal ash and moisture analysers for improved yield and productivity for your operation
The GammaScan and GammaScanDUO bring together the world-best innovation and the smartest technology to deliver the most advanced coal ash analyser and combined coal ash and moisture analysers in the world today.
Online Coal Ash Analyser & Coal Calorific Value Analyser Features and Benefits
GammaScan provides instantaneous, continuous, on-belt Ash-in-coal data for real-time control of plant operations. At the same time, GammaScan Duo provides instantaneous, continuous, on-belt ash, moisture and CV data for real-time control.
• Rapid return on investment through reduced laboratory analysis, and optimisation of plant operation in real time
• No lead over-shield required!
• Suited for all coal types
• No maximum bed depth
• Rugged – designed for harsh environments – mine, washplant, powerplant
• Non-contact technique – no wear components
• Low ongoing maintenance
• SAFE: no radioactive sources used; uses the natural radioactivity of the coal
• 3G interface for comprehensive remote diagnostics by RTI engineers, independent of client IT infrastructure
Easy menu driven touchscreen HMI for all setup, calibration, and results
• No laptop connection is required
• Very easy setup virtually eliminates “set up error” – a major reason for poor performance in other analysers
• All standard communications protocols supported. Seamless, hassle-free plant integration.
GammaScan Online Coal Ash Analyser Working Principle
The GammaScan Coal Ash Analyser is an on-line “natural gamma” ash monitoring system or coal ash content analysis easily installed directly under conveyor belts. The system does not contain any nucleonic sources and therefore does not require a radiation licence for its use.
The GammaScan measures the low levels of naturally occurring gamma radiation in the coal being transported on a conveyor. This radiation mainly arises from elements like U, K, and Th, which are naturally present in coal. The amount of these elements present has been shown to correlate well with the amount of the main Ash forming elements (Si, Fe, Al, Ca) and so the gamma count rate correlates to coal ash content analysis.
GammaScan Coal Ash Analyser incorporates a large scintillation detector, which is mounted between conveyor idlers directly under the centre line of the belt. This detector is shielded from background radiation by a lead lining within the detector assembly, as well as an over-belt lead shield.
This technology is ideally suited to the measurement of ash or coal ash analysis in applications with thick coal beds such as on raw coal conveyors and plant feed conveyors. The natural gamma technology is the only technology that can measure bed depths that are very thick. It provides accurate real-time information for continuous quality monitoring and allows control-room operators to optimise the plants process.
Combined Coal Ash and Moisture Calorific Value Analysers Working Principle
The GammaScan Duo analyser is an on-line “natural gamma and low-level microwave” CV (calorific value) measurement system easily installed on conveyor belts. The system does not contain any nucleonic sources and therefore does not require a radiation licence.
The GammaScan Duo measures moisture and the low levels of naturally occurring gamma radiation in the coal transported on a conveyor. This radiation mainly arises from elements like U, K, and Th naturally present in coal.
The amount of these elements present has been shown to correlate well with the amount of the main ash-forming elements (Si, Fe, Al, Ca), and so the gamma count rate correlates to ash content. Combining the ash measurement with moisture, the tonnage and the DAFV (dry ash-free value) of the coal CV can be accurately determined.
Is GammaScan & GammaScan DUO the best choice for my application?
Real Time Instruments manufacture a range of Ash Analysers to cover all operational needs, including the AshScan Ash Analyser, AshScan Duo Ash + Moisture Analyser, and the AllScan Elemental Analyser. The right choice depends on your application, so contact us now to discuss your Ash Analysis needs.
GammaScan & GammaScan Duo Specifications
Operational
| Principle of Operation | Natural Gamma – microwave transmission |
| Radioactive Sources | None |
| Conveyor width | From 1200mm upwards, no maximum limit. (Belts less than 1200mm accommodated depending on application) |
| Belt Speed | No limit |
| Bed Depth Range | The minimum belt loading to achieve acceptable results is 110 kg/meter |
| Ash Range | 0 – 100% |
| Moisture Range | 0-65% |
Environmental
| Humidity | 5% – 95% RH non condensing |
| Operating temperature | -20 – 550C |
| IP Protection Rating | IP66 stainless steel. Optional sunshade for control cabinet |
Control and Communications
| At-Instrument Control | Touchscreen HMI, no laptop connection required. HMI provides access to all functions via a simple menu structure. Includes diagnostics, setup, calibration, instantaneous ash, moisture and CV readout, trend data in graphical and tabular format. |
| Outputs (Standard) | 4-20mA instantaneous ash/moisture/CV (user defined). 4-20mA tons-weighted ash/moisture/CV (user defined). High and low ash/moisture/CV alarm relay, output via serial communications only. GammaScan can be supplied with any standard communication protocol, such as ethernet, Modbus, and others. |
| Inputs (Standard) | Conveyer running (digital) Material available (digital) Tons of weighted reset (digital) Tons per hour (analogue) |
| Remote 3G Diagnostics and data access | 3G modem supplied standard. Access is via a secure web page and allows complete diagnostics by RTI engineers. |
Utility Requirements
| Power | 110-240 VAC 50/60Hz single phase, 300W |
| Communications Cabling | Standard cabling depending on the choice of protocol (no specialised cabling required) |
Performance
| Ash | typically ± 1.0% (1SD) application dependant |
| Moisture Range | typically ± 1.0% (1SD) application dependant |
| Calorific Value | typically ± 1.5% (1SD) application dependant |
