Product category:
Environmental sensors and sampling systems
News Release from: Sentry Equipment Corp | Subject: Automatic samplers
Edited by the Processingtalk Editorial
Team on 22 April 2003
Automatic samplers for dry bulk
materials
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
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
This article was originally published on Processingtalk on 24 Feb 2003 at 8.00am (UK)
Related stories
Automatic samplers for liquids or slurries
Isolok automatic samplers offered by Bristol Equipment Company draw measured portions of liquids or slurries on command from electrical or all-pneumatic controls
Sampling system for food fluids
An addition to the Isolok automatic sampling devices from Bristol Equipment Company is designed for flowable, medium-viscosity process materials, for food, dairy and pharmaceutical applications
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.
Further reading
Sampler captures dry, wet or sticky materials
An automatic, rotary-arm, scoop-type sampling system from Bristol Equipment Company draws samples of bulk material from belt conveyors and deposits the samples into a receptacle standing by the belt
Heavy-duty automatic sampler
A heavy-duty Isolok automatic sampler from Bristol Equipment allows service demounting without process interruption
Oven temperature controllers
ABB Automation Technologies has supplied 12 ControlIT C351 single loop process controllers to Belgian chemical company Tessenderlo Chemie NV, to control six ovens in a continuous sulphate process
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-recognised grades, plus PTFE fluorocarbon.
Wear-resistant flex designs, pressure containment seals, lip-type wiping seals and metal discs are available.
Series SAK samplers are sized to draw 18cc sample portions in materials with particle sizes up to approximately 11/32in (9mm).
Units slip into a smooth-bore 2 inch diameter mounting port, held in place by a simple split-clamp secured over mating ferrules.
Units measure 10-9/16in long x 5in diameter, weigh 10 lbs.
Series SAH samplers serve the same sample size requirements as SAK models but offer an extended, 3in stroke to accommodate heavy- or double-walled vessels.
Standard SAH models mount using four cap-screw 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 2-1/2in diameter ferrule-type clamp-on mounts.
Units measure 14-3/8in long x 6-1/4in diameter, weigh 21 lbs.
Series SAE samplers are heavy-duty units designed to capture 100cc portions in particle sizes up to 3/4in (19mm).
These units mount through a 3in diameter smooth-bore port, gasket-sealed and held in place by a hinged clamp over mating ferrules.
Units measure 18-3/16in long x 6-1/2in diameter, weigh 29 lbs.
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 30 psi minimum pressure for operation.
Custom-designed sampler control stations and automated multi-sample collection devices can be provided by Bristol engineers to meet virtually any process sampling requirement, including interfacing with fully automated production systems.
• Sentry Equipment Corp: contact details and other news
• Email this article to a colleague
• Register for the free Processingtalk email newsletter
• Processingtalk Home Page
