THE Ronan continuous weighing system, available through AMS , consists of a measuring frame, source holder, detector, cable, and electronic unit. The measuring frame is available in "A" and "O" frame configurations depending upon the physical characteristics of the conveyor.
Both source holder and detector are integral parts of the measuring frame. An interconnect cable connects the detector to the remotely mounted electronic unit. This electronic unit can be located at a distance up to 5000 feet from the detector.
Electronic packages include panel mount, rack mount, surface mount, NEMA type 4 and NEMA type 4X enclosures. The highly focused radiation beam emitted from the source holder is transmitted through the bulk material on the conveyor.
The ion chamber detector mounted below the conveyor receives radiation in an amount inversely proportional to the loading in weight-per-unit-length. This signal is then multiplied with a length-per-unit-time signal representing speed.
Both signals are processed in the X96S weight computer and a signal representing rate of flow or weight-per-unit-time is calculated. This flow rate signal is integrated with respect to time to produce the total weight transported.
The electronic unit is capable of displaying weight, rate, and speed simultaneously or continuous totalised weight in selected units. A predetermined count can also be set for batching applications where an end-of-batch contact is desirable.
State of-the-art processing technology, coupled with the easily installed non-contacting measuring assembly combine to provide the user with a very reliable and cost effective method of weighing bulk materials.
Source holder/radiation source
The system uses the Cesium-137 isotope as its source of radiation. The Cesium isotope is selected for its excellent penetration capability and thirty year half-life.
The source material is doubly encapsulated in a heliarc-welded stainless steel capsule and placed into a ductile iron housing with rotary shutter. This package provides complete shielding during shipping, installation, and maintenance.
System inputs
The X96S process measurement computer accepts the input from the ion chamber located in the scale frame as well as a speed input from a tachometer.
A 4-20mA dc output proportional to weight/rate, RS232 host computer interface, and pre-determined counter contact outputs allow the user several options to interface the X96S to the various process control systems available today.