The main applications for this type of analyser are defined by their capability to give the actual concentration in mg C/ltr. The initial task of such TOC analyzers was to measure TOC in drinking water, waste water and boiler feed water.
Thus, the disadvantage of such oxidation-based technology is the complex design of high temperature oxidisers, reagent, electric pumps, gas- dryers, air-treaters for TOC and CO2
and scrubbers depending on the technique used.
Bear in mind that an analyser-installation should incorporate minimal sample handling and preparation, running costs and down time. Therefore, the main disadvantage of conventional TOC analysers in steam applications is that it takes several minutes until the steam is condensed and transformed into the gas-phase again so it can be measured with an NDIR detector.
Benefits at-a-glance
There are several clear benefits for the proposed FID solution to monitor possible contamination of the steam or the condensate:
• Very fast response time. • Simple automatic calibration. • No time consuming sample conditioning (e.g. cooling of the condensate to <45°C). • Quick analysing results due to fast response time of the FID. • No moving parts. • Very low maintenance. • No chemical reagent required. • Self-cleaning system design. • Proven reliability with maximum uptime. • Available as single channel configuration or automatic multichannel switch (delay-free!). • Available for Safe area or Ex Area Zone 1 or 2 – ATEX certified • Vortex cooling >40°C ambient available.
Conclusion
The JCT J-FID TOC-Monitor for Steam Applications provides an easy to setup and cost effective solution for the continuous monitoring and control of contamination caused by hydrocarbons.
• Keep the steam clean. • Reduce costs for condensate polishing. • Protect the investment of the steam processing system in chemical and petrochemical plants.
, strippers
Brief Description of the FID Analyser
In vapour phase there is a continuous flow. A heated pressure-reducing-unit conditions the steam (2 - 17 bar) and ensures a permanent flow to the analyser. A small part flows to the detector and the excess of the sample is purged out together with the analyser exhaust.
The corrosion proof detector is heated up to maximum 200°C; the twin air-jet aspirators for the sample flow in a heated detector are maintenance free. Flow controllers, sensors and valves are in contact only with clean (instrument) air, hydrogen and span gas. This, in combination with the dilution of the sample gas with compressed air as exhaust gas, results in an analyser with low service costs and high availability.
The unique close couple detector design (no cables; direct AD coupler to electrode) provides low drift operation, a wide dynamic range and an optimum signal to noise ratio. All digital input features are designed according NAMUR guidelines, all digital outputs are potential free contacts. Analogue output signals 4 x 0/4-20mA with optical galvanic isolation. Instrument operation, configuration and remote control is also available on 2 x RS232.
Best measurement performance is provided by offering constant sample mass flow and pressure conditions to the detector chamber. Due to the optimum design of the instrument, pressure variation at the sample point is allowed between 800 mbar – 1600 mbar absolute without lack of performance.
Author Contact Details Günter Zimmel • Werner-Heissenberg-Straße • 4 A-2700 Wiener Neustadt • Tel: +43 (0) 2622 / 87201 Fax: +43 (0) 2622 / 872011 • Email:
sales@jct.at • Web:
www.jct.at/toc-monitoring
Application-Specific Industrial pH Analyser System Delivers Accuracy with Economy and Long Life
Process and plant engineers responsible for process water and wastewater treatment will find the new Application-Specific Industrial pH Analyser System from Electro-Chemical Devices is ideal for rugged industrial process and plant environments, delivering superior accuracy, flexibility, economy and long life.
Measuring pH has never been easier or more cost effective than with ECD’s intelligent plug-and-play S80 Sensors. These versatile sensors with their economical replaceable cartridges are available in 10 different application-specific pH electrode configurations to support the most popular industrial process and plant applications in water and wastewater treatment.
ECD’s 10 different pH electrode cartridges for the S80 Sensors have been developed to provide the best measurement solution to a number of common industrial applications. Users can choose from general-purpose pH electrode cartridges for water, rinse water, cooling water or wastewater. Heavy-duty pH electrode cartridges are available for high temperature cycles, slurries, abrasive fluids, sulphide resistance and fluoride resistance.
With their rugged design, ECD’s S80 Sensors are suitable for the most challenging industrial environments requiring pH measurement. For example, they are suitable for oil/gas refineries or chemical plants with stack gas scrubbers on waste incinerators. They also support electric power plant boilers requiring high purity water.
The S80 Sensors are available in a standard 0.75-inch diameter Insertion/Submersion configuration with threaded compression fittings. They can be inserted into typical pipe tees, flanges or attached to a stand pipe and immersed into a tank or ditch.
S80 Sensors are also available in a Valve Retractable configuration, which utilises compression fittings and ball valves to facilitate insertion and retraction of the sensor into a flowing pipe or tank without shutting down the flow through the pipe or emptying the tank. The standard materials of construction are 316L stainless steel with VITON O-rings. Heavy duty materials available include Monel, Titanium, Hastelloy bodies and EPR, EXTREME and KALREZ O-rings.
Set-up couldn’t be easier than with the S80 Sensors for pH monitoring. They come pre-calibrated from the factory. When installed they convert the analog signals from their dual toroid magnetic coils into a digital protocol that allows two-way communications with ECD’s universal T80 Transmitter. The identity of the sensor, the measurement type and the serial number are stored in the sensor’s memory along with three calibration registers.
The T80 Transmitter is a single or dual channel transmitter for the measurement of pH, conductivity, resistivity, ORP, pION, dissolved oxygen and turbidity. It digitally communicates with any of ECD’s intelligent S80 Sensors, automatically configuring the transmitter’s menus and display screens to the measured parameter.
For More Info, email: email:
For More Info, email:
40846pr@reply-direct.com ANNUAL BUYERS GUIDE 2017 •
WWW.PETRO-ONLINE.COM
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