Non-metallic enclosure protects unattended on-line monitoring unit

EnviroTech uses remote, low-power telemetry-enabled systems to protect an automated chemical measure system (Autolab), using non-metallic enclosures.

06/21/2011


Control - Stahlin N Series Enclosures - Type 12EnviroTech Instruments develops and manufactures automated analytical systems for environmental and water quality applications. Systems with remote, low-power telemetry-enabled capabilities can continuously monitor nitrate, phosphate and ammonia concentrations in natural waters, agricultural run-off, wells and drainage systems.

Enclosure selection criteria

Autolab is an automated field-deployable nutrient analyzer system with a modular design that may be configured to measure one to four nutrients in parallel and run in unattended auto-sampling mode for long periods.

Simple user maintenance and periodic self-calibration enables Autolab 4 to cost-effectively provide high-frequency nutrient data with minimal operator overhead. Data telemetry via low-cost radio or cellular modems provides real-time visibility of field conditions for monitoring and early warning. 

The product is placed in environments characterized by extreme conditions. Controls and instrumentation must be properly protected to ensure proper functioning and to maintain optimum reliability in the transfer of critical data from field to customer.

An aluminum enclosure was specified with the initial design, but after several months of sun and rain, the finish appeared to be failing, detrimental to quality and an indication that the substrate was vulnerable to compromise. Also, metallic enclosures are subject to denting, which can cause the gasketed sealing to fail, leading to system failure.

Non-metallic enclosures

Stainless steel enclosures presented an option, but higher cost and excessive weight were undesirable. A customer using non-metallic enclosures for another controls systems lead to selection of a line of nonmetallic enclosures to house Autolab.

It was very important to include UV resistance, corrosion and moisture protection. The industrial industrial enclosures selected were originally designed as an electrical junction box for the oil refining and petrochemical industries, and later adapted for varied applications, from high-end electronics to extreme corrosive applications, indoors and out, in many sizes, cover and window options, various hinge and latch configurations and integral molded mounting flanges, with NEMA ratings of 1, 3, 4X, 6P, 12 and UL/cUL/CSA approvals.

Extensive field exposure demonstrated ability to maintain a watertight seal, reliably protect instrumentation from potential damage by corrosion, moisture, dust and other debris. In addition, the original enclosure finish and aesthetic appearance remains consistent even with extended exposure to elements and UV radiation.

www.envirotechinstruments.com

Envirotech Instruments LLC

www.stahlin.com

Stahlin Non-Metallic Enclosures were used for Autolab. Stahlin J and N Series use SolarGuard, a patented sheet molded compound for molded-in UV resistance.

- Edited by Chris Vavra and Mark T. Hoske, CFE Media, Control Engineering, www.controleng.com



No comments
The Engineers' Choice Awards highlight some of the best new control, instrumentation and automation products as chosen by...
Each year, a panel of Control Engineering editors and industry expert judges select the System Integrator of the Year Award winners.
Control Engineering Leaders Under 40 identifies and gives recognition to young engineers who...
Learn more about methods used to ensure that the integration between the safety system and the process control...
Adding industrial toughness and reliability to Ethernet eGuide
Technological advances like multiple-in-multiple-out (MIMO) transmitting and receiving
Big plans for small nuclear reactors: Simpler, safer control designs; Smarter manufacturing; Industrial cloud; Mobile HMI; Controls convergence
Virtualization advice: 4 ways splitting servers can help manufacturing; Efficient motion controls; Fill the brain drain; Learn from the HART Plant of the Year
Two sides to process safety: Combining human and technical factors in your program; Preparing HMI graphics for migrations; Mechatronics and safety; Engineers' Choice Awards
The Ask Control Engineering blog covers all aspects of automation, including motors, drives, sensors, motion control, machine control, and embedded systems.
Join this ongoing discussion of machine guarding topics, including solutions assessments, regulatory compliance, gap analysis...
News and comments from Control Engineering process industries editor, Peter Welander.
IMS Research, recently acquired by IHS Inc., is a leading independent supplier of market research and consultancy to the global electronics industry.
This is a blog from the trenches – written by engineers who are implementing and upgrading control systems every day across every industry.
Anthony Baker is a fictitious aggregation of experts from Callisto Integration, providing manufacturing consulting and systems integration.
Integrator Guide

Integrator Guide

Search the online Automation Integrator Guide
 

Create New Listing

Visit the System Integrators page to view past winners of Control Engineering's System Integrator of the Year Award and learn how to enter the competition. You will also find more information on system integrators and Control System Integrators Association.

Case Study Database

Case Study Database

Get more exposure for your case study by uploading it to the Control Engineering case study database, where end-users can identify relevant solutions and explore what the experts are doing to effectively implement a variety of technology and productivity related projects.

These case studies provide examples of how knowledgeable solution providers have used technology, processes and people to create effective and successful implementations in real-world situations. Case studies can be completed by filling out a simple online form where you can outline the project title, abstract, and full story in 1500 words or less; upload photos, videos and a logo.

Click here to visit the Case Study Database and upload your case study.