Liquid gases such as butane and propane are created in crude oil distillation processes.
The gases are stored either under pressure in horizontal or spherical tanks or at incredibly low temperatures. There are operational issues as the level measurement sensors need to be highly reliable as the tanks cannot be open for several years at a time.
The ATEX hazardous area directive consists of two EU directives describing the type of equipment and work environment allowed in an environment with an explosive atmosphere. ATEX derives its name from the French title of the 94/9/EC directive: Appareils destinés à être utilisés en ATmosphères EXplosibles.
Selecting electrical, process or instrumentation equipment for hazardous areas can be complex and several factors must be considered in the decision making process.
Hazardous area classification must be carried out according to established codes (such as ATEX) or quantitative methods requiring a detailed knowledge of the plant. Sources of flammable gas or vapour release must also be identified, located and attributed to the specific potentially explosive Gas Group (G) or Dust Group (D).
Furthermore, explosive gases and dusts have an ignition temperature – the ATEX certified level sensors according to the equipment marking should be matched against the equipment temperature class (T).
Ambient temperatures, protection concepts and hazardous area zone also dictate the selection process and level sensor specification – should you require any assistance with the selection or specification of process instrumentation equipment including level sensors please do not hesitate to contact us.
Due to its high pressure resistance and impermeability, VEGASWING 63 is especially suitable for all level measurement and detection applications in LPG. The vibrating level switch is absolutely impervious and can be provided with an additional gas-tight lead through. The level sensors can also reliably detect the empty condition.
Especially for measuring ranges up to 6 metre, the VEGAFLEX 67 guided microwave instrument offers the best solution for continuous level measurement, with simultaneous detection of the water level in LPG applications. Part of the transmitted signal penetrates the surface of the liquefied gas and is reflected by the water surface that exists close to the bottom of the vessel. Both levels are indicated via the analysis of the two signals.
Retrofitting with standpipes for level measurement is work and cost-intensive, especially in large vessels. The high-sensitivity radar instrument VEGAPULS 68 can acquire level data of liquid gas without the usual standpipes. A ball valve separates the level sensor from the process and enables retrofitting without emptying the vessel.
VEGAPULS 63 is the ideal sensor for all applications in extremely low temperatures. Due to the antenna cover of PTFE, the level sensing instrument can be used even when product temperatures drop to -200 °C. An additional temperature-isolating elastomer seal is not required – for products with poor reflective properties, such as liquid nitrogen, application with a standpipe is recommended.
For more information about the VEGA range of level measurement instruments please contact T&D.
T&D UK & International: Project Suppliers To The Onshore & Offshore Oil, Gas, Petrochem & Hazardous Area Industries.
Radar Level Measurement – How Does It Work?
Guided Wave Radar Level Sensor – How Does it Work?
VEGAFLEX 81 – Guided Wave Radar Level Measurement – Ammonia Receiving TankÂ
VEGAPULS 62 Non Contact Radar Level Sensor Used In The Oil And Gas IndustryÂ
Thorne & Derrick International, based in the UK, distribute Explosion Proof & Hazardous Area Process Instrumentation Equipment (ATEX & IECEx Certified): this includes industrial measurement probes, humidity sensors, data loggers, handheld instruments and transmitters for temperature measurement and monitoring of relative humidity. Additionally, hazardous area instrumentation is also available for monitoring carbon dioxide, differential and process pressure, flow, dew point, water activity and analog signals.
Thorne & Derrick are inviting you to join LinkedIn’s fastest growing Discussion Group – Process & Hazardous Area Industries : Heat Tracing, Gas Detection, Fluid Control & Flow Measurement. News, projects, videos, promotions, whitepapers, jobs, webinars, press plus much more. 
ABOUT US
Thorne & Derrick International are your single-source supplier of Electrical, Mechanical, Process & Instrumentation Equipment. T&D provide an outstanding service to UK and international customers – we are highly customer responsive and absolutely committed to providing a world-class service.
T&D supply utilities, power, renewable energy, construction, rail, manufacturing, food/beverage, mining, oil, gas and petrochemical industries – distributing 100,000+ products from 100+ manufacturers from multi-million pound stocks. Since 1985 we have established a solid reputation based on service, integrity and trust.
Hazardous Area Level Sensors
In addition to ATEX and IECEx Certification for their range of hazardous area level sensors and level switches, Deeter are now certified to CSA standards for Explosion Proof Accreditation.
CSA is the Canadian Standards Association which provides product testing and certification for a wide variety of electrical and mechanical products including level sensors for hazardous areas and locations.
Contact T&D for monitoring and level sensing of liquids – products with ATEX and IECEx certification are available including hazardous area float switches, liquid level sensors and load cells.
Learn more about Deeter.
Hazardous Area Classifications – CSA
In North America, hazardous area workplaces and locations have traditionally been defined by a combination of Classes and Divisions:
The U.S. and Canada have recently revised installation codes to recognize an international 3-Zone area classification system for equipment used in hazardous locations.
In Canada, all new installations must use the 3-Zone system – existing installations may continue to use the 2-Division system or opt to re-classify using the 3-Zone system.
In the U.S., all installations (both new and existing) can either continue using the 2-Division system or re-classify their product using the 3-Zone system.
Should you require any assistance selecting hazardous area level sensors for international classifications including ATEX, IECEx and CSA please do not hesitate to contact us.
Contact T&D to discuss your Hazardous Area Process Instrumentation requirements.
Deeter are a leading designer and manufacturer of electronic sensors and control systems for level measurement requirements and produce a range of explosion proof level sensors and float switches for use in hazardous area applications.
CSA approval, along with Deeter’s ATEX & IECEx certifications allows the Deeter LVCS FP level sensor and FS FP hazardous area float switch to be suitable for use in hazardous area applications in most regions worldwide.
Deeter ATEX & IECEX Certified Explosion Proof Range
Deeter LVCS-FP is a flameproof continuous liquid level sensor suitable for hazardous area applications and offers accurate level measurement using a magnetic float with a reed switch or Hall Effect sensor stem.Â
Deeter LVCS-FP level sensor is available in standard length sensor stems from 250mm to 2m and can be custom made to suit up to 4 metres.
Liquid Level & Float Sensors
The Deeter F/S- FP is a flameproof float switch suitable for hazardous area applications and offers flexible switching options using a magnetic float with a reed switch or Hall Effect sensor stem.
The F/S FP float switches are available in a number of standard length sensor stems – additionally up to 7 switch points can be fitted on one stem with a mix of normally open / normally closed switches to suit the application.
Explosion & Flameproof Liquid Level & Float Sensors
Both the LVCS FP level sensor and F/S FP float switch are suitable for hazardous area Zone 0, 1 and 2 applications and can be custom made to suit client requirements and still meet ATEX, IECEx and CSA directives.
Radar Level Measurement – How Does It Work?
Guided Wave Radar Level Sensor – How Does it Work?
Thorne & Derrick International, based in the UK, distribute Explosion Proof & Hazardous Area Process Instrumentation Equipment (ATEX & IECEx Certified): this includes industrial measurement probes, humidity sensors, data loggers, handheld instruments and transmitters for temperature measurement and monitoring of relative humidity. Additionally, hazardous area instrumentation is also available for monitoring carbon dioxide, differential and process pressure, flow, dew point, water activity and analog signals.
Thorne & Derrick are inviting you to join LinkedIn’s fastest growing Discussion Group – Process & Hazardous Area Industries : Heat Tracing, Gas Detection, Fluid Control & Flow Measurement. News, projects, videos, promotions, whitepapers, jobs, webinars, press plus much more.
ABOUT US
See How T&D Support The Food & Beverage Industry
Thorne & Derrick International are your single-source supplier of Electrical, Mechanical, Process & Instrumentation Equipment. T&D provide an outstanding service to UK and international customers – we are highly customer responsive and absolutely committed to providing a world-class service.
T&D supply utilities, power, renewable energy, construction, rail, manufacturing, food/beverage, mining, oil, gas and petrochemical industries – distributing 100,000+ products from 100+ manufacturers from multi-million pound stocks. Since 1985 we have established a solid reputation based on service, integrity and trust.
Published 13 Mar 2020
Press Release Date: 02.04.2020 uploaded by Chris Dodds (T&D Sales + Marketing Manager) World’s First Fully Certified ATEX Doors Thorne & Derrick International, the Experts in Equipment for Explosive Atmospheres, today announce the signing of a Commercial Distribution Agreement...
Published 04 Jul 2019
Press Release Date: 04.07.2019 uploaded by Chris Dodds (T&D Sales + Marketing Manager) Category: Stockist Distributor Agreement Announcement Thorne & Derrick International announce that they have signed a Preferred Distributor Agreement with Raytec, the world leading manufacturer of LED...
