Product category:
Machinery and Production Equipment
News Release from: Sentry Equipment Corp | Subject: Isolok
Edited by the Engineeringtalk Editorial
Team on 13 May 2002
Automatic samplers for dry bulk
materials
Isolok automatic sampling devices draw measured portions of dry, flowable, bulk materials in powder, flake, granular or pellet forms, on command from electrical or all-pneumatic controls.
An expanded series of Isolok automatic sampling devices offered by Bristol Equipment Company draws measured portions of dry, flowable, bulk materials in powder, flake, granular or pellet forms, on command from electrical or all-pneumatic controls Actuated by compressed air cylinder for greater safety in dusty environments, Isolok dry-bulk samplers tap process streams moving through screw conveyors, slides, drop chutes and hoppers, or vessels such as mixers, dryers, bins and tanks
A simple, reliable design with only one moving part, the Isolok sampler mounts through an access port installed on the process equipment.
The sampler body encloses a plunger that extends to penetrate the process stream then immediately withdraws.
Samples are trapped in an annular ring at the end of the plunger, drawn into the sampler body and dropped into an attached container or transfer line.
The sample path is completely enclosed to prevent spillage and sample contamination.
An auxiliary top body port allows for air eject of sticky or easily compacted materials.
Special seals encircling the plunger at both ends of the annular ring keep the access port closed and the process material isolated regardless of plunger position, to prevent leakage into the collected sample or contamination of the process.
A variety of process-contact seal materials accommodates different job requirements.
Seal materials include EPDM or polyurethane elastomers in both general purpose and FDA-recogni ed grades, plus PTFE fluorocarbon.
Wear-resistant flex designs, pressure containment seals, lip-type wiping seals and metal discs are available.
Series SAK samplers are si ed to draw 18cm3 sample portions in materials with particle si es up to approximately 9mm.
Units slip into a smooth-bore 2in diameter mounting port, held in place by a simple split-clamp secured over mating ferrules.
Units measure 10.6in long by 5in diameter, weigh 10lb.
Series SAH samplers serve the same sample si e requirements as SAK models but offer an extended, 3in stroke to accommodate heavy- or double-walled vessels.
Standard SAH models mount using four capscrew fasteners extending into tapped holes in a heavy instrument hub welded through the tank or vessel wall, and are appropriate for ASME/ANSI Boiler and Pressure Vessel Code certified vessels.
For hopper or chute installations, SAH samplers can be fitted for 2.5in diameter ferrule-type clamp-on mounts.
Units measure 14.4in long by 6.25in diameter, weigh 21lb.
Series SAE samplers are heavy-duty units designed to capture 100cc portions in particle si es up to 3/4" (19mm).
These units mount through a 3" diameter smooth-bore port, gasket-sealed and held in place by a hinged clamp over mating ferrules.
Units measure 18.4in long by 6.5in diameter, weigh 29lb.
All three Isolok designs are ruggedly built of type 316 stainless steel, with chrome-hardened body bore to resist abrasive wear, providing reliable service under a wide range of operating conditions.
Other metals are available on special order to suit unusually demanding applications.
Units can be ordered with scoop-like body extensions at the plunger end to capture falling or fast-flowing material, as well as flush-nose bodies for standing or slow-moving streams.
All require compressed air at 30lb/in2 minimum pressure for operation.
Custom-designed sampler control stations and automated multisample collection devices can be provided by Bristol engineers to meet virtually any process sampling requirement, including interfacing with fully automated production systems.
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