Product category:
Environmental sensors and sampling systems
News Release from: Sentry Equipment Corp | Subject: Isolok
Edited by the Processingtalk Editorial
Team on 24 February 2003
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
Actuated by a single compressed air cylinder, for greater safety in dusty or volatile environments, the Isolok sampler taps process streams moving through pipes or vessels pressurized up to 300 psi, as well as troughs or tanks The sample path always remains completely enclosed to avoid spillage, sample or process contamination, and exposure of personnel or plant environment
This article was originally published on Processingtalk on 18 Mar 2003 at 8.00am (UK)
Related stories
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
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
Standard Isolok designs draw samples of 3cc, 8cc, 10cc or 25cc by positive displacement with each cycle, with custom sample sizing available.
A wide range of cycle controls is offered, including automatic time-base, flow-proportional, manual cycling and PLC (programmable logic controller) interface modules.
A simple, reliable design with only one moving part, the Isolok sampler mounts through an access port installed on the process equipment.
Further reading
Heavy-duty automatic sampler
A heavy-duty Isolok automatic sampler from Bristol Equipment allows service demounting without process interruption
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
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 transferred directly into an attached container or transfer line.
Samplers mount on process lines or equipment by NPS threads, instrument hub, ferrule clamp or ANSI flange, and can be fitted with electric or steam heat jackets for sampling molten materials.
An auxiliary top body port allows for air or gas ejection of sticky or easily compacted materials, or recapture of any process gases that emerge with the sample.
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.
A variety of process-contact seal materials accommodates different job requirements, including 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.
All Isolok samplers 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.
All models 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.
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