Conveyor belt sampling system

The company's automatic, rotary-arm, scoop-type sampling system draws samples of bulk material from belt conveyors moving at speeds of up to 615 fpm and deposits the samples into an open or closed receptacle alongside the belt. The third-generation DS-3B sampler with standard 3-in.-wide scoop reaches into material on the conveyor and captures up to 16 cu. in. of sample per cycle in particulate sizes up to 1½ in. in diameter. Other scoop sizes are optionally available. Automatic sampling cycles are user-adjustable from every 10 seconds to every 1,700 hours.

On command from a signal initiated either from the sampler control or by remote automation, the scoop arm makes a single revolution in the direction of belt travel, at a speed adjusted to slightly exceed belt speed. The arm rotates around an axis that is perpendicular to the belt, but angled 45° to horizontal. Sample material is held in the scoop by centrifugal force until released near the top of the scoop-arm's rotational arc, where the scoop stops abruptly, flinging the sample into a stainless steel hopper. Quick arm rotation and abrupt stop result from a worm-gear reduction drive powered by a ¾hp brake-motor. The point at which the arm stops to discharge the sample is user-adjustable for optimal release of different materials.

Scoop and hopper are made of 12-gauge, type 18-8 stainless steel to resist wear and rust contamination of the sample. The leading edge of the scoop is weld-hardfaced for long life. The entire sampling system is contained within a 10-gauge, welded-steel cabinet with all surfaces protected by a polyurethane enamel coating. The unit requires 230- or 460-volt, 3-phase, 60-Hz service for the motor. The belt sampler — suitable for such diverse materials as crushed rock and coal, wet phosphate pebble, and portland and clinker cement — can be positioned anywhere along the conveyor line where space permits, on horizontal or inclined conveyors with up to an 18° slope. Bristol Equipment Co., (+1) 630-553-7161
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Point Level Sensor

RF 9200 and RF 11000/12000 Series radio frequency (RF) level controls offer explosion-proof rating because the cover does not need to be removed for calibration, which is accomplished through a magnetic calibration technique. The electronic housing is listed by Underwriters Laboratory as explosion-proof, and the remote probes are listed as intrinsically safe. Remote versions of the RF Series are available for high temperature applications over 1000°F (538°C). The RF Series is a suitable choice of point level sensor for any liquid, slurry or solid used in hazardous locations. Bindicator, (+1) 864-574-8060
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Rheometer aeration accessory

A new aeration accessory introduced for the FT3 Powder Rheometer enables users to run their standard flowability tests while aerating or even fluidizing a sample. Data from the FT3 reportedly has proved valuable in characterizing a wide range of powders and granulated materials; and the accessory adds further capabilities, allowing energy and flowability indices to be derived as a function of the amount of air present. It also introduces the facility to measure a powder's permeability. The new FT3 aeration accessory controls a metered air supply as it is fed into the powder-testing vessel through a specially designed base fitted with a porous stainless steel mesh. Flow rates from 0.1 to 5 liters/min. can be achieved. The base supports the powder and allows the passage of air into it, ensuring that discharge is uniform over the area of the powder column. Freeman Technology, (+44) 0-1684-310-860
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Rotary level switch

According to the manufacturer, performance enhancements of the rotary level switch significantly improve its reliability, including such features as a de-energizing motor, three drive-shaft bearings, and a built-in motor slip clutch. The rotaries can be used to prevent bin overflow, empty conditions, clogged chutes, and jammed conveyors. The units can be installed almost anywhere dry bulk materials are stored, and require no calibration or adjustments. BinMaster (+1) 402-434-9102
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Laser level-meter

The LMC4 and its more lightweight cousin, the LM02, are now available as laser level, distance and position transmitters that measure bulk solids and opaque liquids. Because the laser wavelength is only 1 micrometer, it has virtually no beam divergence and can measure to surfaces at an angle. No beam divergence means no false echoes from tank walls and other objects between the lasermeter and the material being measured. Additionally, whether the material being measured is in a cone-up or cone-down position, the lasermeter determines the level of these uneven surfaces because all materials look rough to the laser's short wavelength. Available dust tubes ensure continuous operation under high-particulate ambient environments. The units are easily programmed with a PC or palm pilot; no special configuration software is needed. Utilizing Class 1 lasers, the lasermeters are completely safe for the human eye — no special safety glasses are required. Both models operate on 24 volts DC and come equipped with outputs of 4-20 mA, RS232, and two open-collector relay outputs. K-Tek, (+1) 310-787-1940
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Continuous sampler

With no moving parts, the continuous sampler collects a small, fixed fraction of powders, tablets or slurries. Featuring sanitary pipe connections, the HF Model can be clamped to the discharge of fluid bed transfer funnels, drum transfer funnels, mixers, blenders, tablet machines, or any bulk transfer operation where QA/QC sampling is required. As material is transferred, the sampler collects a composite fraction of the entire flow. It is suitable for raw materials QA, intermediate QC, or final packaging sample collection. GR Sprenger Engineering Inc., (+1) 303-665-7069
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Interface Module

The DeviceNet Interface Module has passed ODVA conformance testing guidelines. ODVA is the organization that manages the DeviceNet and EtherNet/IP network technology and standards in addition to promoting worldwide adoption in industrial automation. With the approval from ODVA, SWS DeviceNet Interface Module has received the DeviceNet conformance-tested checkmark symbol. This certification further verifies the system reliability and compatibility of an SWS DeviceNet Interface Module. By attaching the conformance-tested DeviceNet module to a Disocont System Module, SWS customers are assured of using a high-performance, easy-to-install gravimetric control for bulk solids metering equipment, developers contend. Schenk Weighing Systems, (+1) 800-401-9702
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Dust control

Company introduces the Passive Enclosure Dust Control System (PECS) Transfer Point System for control of airborne dust created in the conveying of material without requiring baghouse dust collectors. The manufacturer notes that PECS Transfer Points have been shown to reduce the release of fugitive material by as much as 75% when compared to conventional dust control systems. The PECS System has been designated Best Available Control Technology (BACT) for control of transfer point dust by the Wyoming Department of Environmental Quality. To improve operations and achieve regulatory limits on dust without installation of expensive baghouse systems, the PECS System can be retrofit into existing conveyors; as well, it can be easily designed into new conveyor systems. To reduce respirable and fugitive dust at conveyor transfer points, the patented PECS design incorporates seals to prevent air entering the transfer point, a “hood and spoon” system chute to confine the material path, and dust curtains at the exit to slow air movement and minimize dust escape. Martin Engineering, (+1) 309-594-2662, ext. 278
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AC motor

Available in horsepower ratings ranging from 3 to 50, the new Calibre general-purpose AC motor is designed to provide a cost-effective cast iron solution with quality performance on applications found in general industry, the manufacturer notes. The motor is available in a horizontal foot-mounted configuration with optional C Face designs. The product is EPA-compliant and comes with a TEFC enclosure in 3,600, 1,800 or 1,200 rpm speeds. It is available in a variety of voltage ratings at 3-Phase, 60-Hertz, or 50-Hertz power systems. Rockwell Automation, (+1) 864-281-2171
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