Simplified liquid analysis.

Speeds water quality measurement installation with configurable, pre-engineered designs.

The Rosemount™ 105P Standard Liquid Panel Systems, configurable liquid analysis panel systems designed to reduce project complexity for water quality measurement applications. The pre-engineered panel systems combine Rosemount transmitters, sensors, cables, flow cells and flow control components into a repeatable architecture, simplifying integration and supporting a more streamlined path from specification to start-up with less on-site assembly and labour.

Liquid analysis panel projects are often handled as one-off engineered systems or assembled from loose components, creating added ordering steps, site work and installation variability. The Rosemount 105P panel systems standardise common water quality measurement needs in a configurable system that supports a range of analytical measurements, including pH, oxidation-reduction potential (ORP), dissolved oxygen and chlorine.

By combining Rosemount transmitters, sensors, cables, flow cells and flow control components into one ready-to-install system, the Rosemount 105P helps reduce the cost, time and effort required to specify, order, assemble and commission liquid analysis panels. Its configurable, pre-engineered design enables organisations to standardise deployments and replicate proven panel configurations across sites. Compared with assembling similar systems in the field, the Rosemount 105P can reduce engineering and assembly time by up to 90%, helping teams accelerate project execution while reducing complexity and installation variability.*

“Customers need liquid analysis systems that are easier to configure, order and put into service,” said Peyton Munoz, global product manager for liquid analysis at Emerson. “The Rosemount 105P panel systems give customers a standardised option between loose components and fully custom-engineered panels, helping them standardise common water quality applications while maintaining flexibility for their measurement needs.”

Factory assembly, testing and documentation help create a consistent sample environment that supports reliable measurement performance and reduces variability often associated with field-built systems. By minimising field fabrication, troubleshooting and maintenance complexity, the Rosemount 105P helps organisations significantly lower lifecycle costs while maintaining the water quality insights needed for process performance, compliance and operational efficiency.

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* Based on Emerson internal estimates comparing engineering and assembly of repeat Rosemount 105P panel deployments with comparable field-built liquid analysis panel systems. Actual results may vary depending on application, configuration and site conditions.

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Optical DO2 sensor and analyser

Emerson Process Management has introduced the Rosemount Analytical RDO® optical dissolved oxygen sensor and analyser for use in wastewater aeration basins and ponds. The sensor is more resistant to fouling than polarographic sensors, an important advantage in wastewater where coating is a common problem. Less sensitivity to fouling means reduced operating costs as there is less need for cleaning.

The sensor is available with either an integral or quick-disconnect cable. A 1-¼” FPT fitting at the rear of the sensor allows a threaded pipe to be screwed into the sensor so it can be submerged in the basin. One advantage of the sensor’s design is that it does not need a flowing sample, so it works well in a low flow basin or pond.

Maintenance is fast and easy and consists primarily of replacing the sensing cap once a year. The analyser accepts one or two sensors. It has a two-line display, which can be customised to show mg/L (ppm) oxygen, percent saturation, oxygen partial pressure, or temperature for either sensor. The display can also be configured to show the current barometric pressure. The analyser has two loop-powered 4-20 mA analogue outputs assignable to either sensor and to any measurement (concentration, temperature, or partial pressure). Modbus/RS485 communication is also available as a standard feature. Calibration is simple and can be done either against a referee instrument or in water-saturated air. Air calibration is completely automatic.

“The addition of the optical dissolved oxygen analyser and sensor to our product line is significant and enables Emerson to continue to be the single-source provider of the most advanced and easy-to-use analysis technologies for wastewater applications,” said John Wright, vice president, Emerson Process Management, Rosemount Analytical. “Our focus has always been to meet real-world customer demands for accuracy, advanced technology, ease-of-use, lowered cost of ownership and reduced maintenance requirements. The optical sensor fulfils that commitment.”

Sampling

Online sampling and analysis
A necessity, not a luxury

A major overhead for any processing plant is effluent discharge. And, in accordance with the British Water Industry Act 1991, any company having a significant quantity of trade effluent discharge must obtain consent prior to making a discharge to the public sewer network or water course. With consent granted on the basis of effluent composition and any levels exceeded resulting in major fines, the need for accurate, effective and traceable measurement has never been so apparent

Simple sampling
At the very least, having an on-site sampler will ensure the customer has a representative sample to give to the trade effluent officer. And here’s where Endress+Hauser can help! Their Liquiport 2000 lightweight portable sampler is ideal for an entry level sampling system. Cost-effective and reliable, its medium detection system recognises the difference between filled and empty pump hoist so that accurate dosing volumes are guaranteed.

For more complex sampling tasks, their MCERTS approved ASP Station 2000 sampler has been specially designed for precision sampling. Offering automatic sampling initiated on the basis of time, quantity or flow, ASP Station 2000 provides defined distribution and conservation of liquid media. Samples are preserved using the integrated cooling system that keeps samples in peek condition from +2°C to +20°C (factory setting is 4°C). The current sample compartment temperature is displayed at the controls and recorded in the internal datalogger (optional) for future reference.

Continuous monitoring
Where continuous monitoring of online parameters is required, the CE4 measurement station with its integrated water sampler is the right choice. The system consists of four main components: electronics, analysis pipework, water sampler and accessories, meaning the system can be tailor-made to suit every measurement task – it can be configured to include pH/ORP, conductivity, DO and turbidity. All components are installed inside a weatherproof stainless steel cabinet, so outdoor storage poses no problems!

Immediate detection
In addition to achieving representative effluent samples, online analysis enables immediate detection of product loss. Their range of online analysers covers all key analytical parameters from pH and suspended solids through to the sum parameters of BOD, COD and TOC. And, by activating alarm set points on the analysers, you can ensure that should any content limits be breached, you’ll know about it immediately - an important factor to avoid fines. Remember, prevention is better than cure!

Ultrapure water

New sensor ideal for ultrapure water applications

The Orbisphere 1100 series optical dissolved oxygen sensor from HACH LANGE is providing major advantages to international service company Serco, in the course of its work to solve corrosion problems within the British power generation sector. The instrumentation has helped reduce maintenance time and service requirements to improve the overall monitoring efficiency of testing carried out under plant conditions.

The sensor is used to monitor feedwater for the determination of dissolved oxygen levels in ultra pure water, in this instance, primary coolant in pressurised water reactors.

Dissolved oxygen is vitally important in applications ranging from power generation, wastewater, drinking water and beverage production to monitor and control corrosion rates of materials.

Employing luminescent measurement technology, with no membranes or electrolyte, the solid state sensor head of the Orbisphere 1100 is unaffected by process changes or pressure shocks and requires minimal user intervention. It is quick and easy to calibrate, saving on maintenance costs as a result. Annual maintenance is limited to just a few minutes for a zero point calibration. In addition, chemicals are not required for this process, making the task easier and safer without reducing measurement precision.

A further useful feature of the luminescent measurement technology is the elimination of effects on readings by other dissolved gases such as carbon dioxide and hydrogen.

The Serco Technical and Assurance Services laboratory team provides a dedicated service to industry, solving corrosion related plant problems. Its research laboratories enable the simulation of most plant conditions found within the power generation market. The majority of the work performed is for regulatory purposes and for plant lifetime/safety studies, so it is vitally important that fast, accurate and reliable results are produced during corrosion experiments that replicate plant conditions.

In order to tailor analytical services to customer needs, the laboratories employ a sophisticated range of the latest laboratory instruments.

Chris Auener, Structural Integrity Analyst at Serco, said: “The sub 10ppb accuracy of the system within the calibration range of the Orbisphere 1100 from HACH LANGE reduces the inaccuracy of the measurement allowing previously unseen readings within primary water conditions at Serco.

“We have numerous requirements from industry to recreate plant conditions with high purity water containing high concentrations of other dissolved gases and pH raisers and so the Orbisphere 1100 has proved ideal for our purposes. The instrument is also extremely user-friendly and meets the industry standard.”

Another benefit of the Orbisphere 1100 is that the sensor will fit into any existing Orbisphere sensor housings, allowing quick and reliable monitoring, even at sub 5ppb levels making the instrument ideal for all power applications. The sensor is then connected to the Orbisphere 510 - Multi Channel O2, O3, CO2, N2 and H2 Gas Analyser and Orbisphere 410 - Oxygen and Ozone Gas Analyser.

Summarising, Gareth Hughes, Industrial Process Sales Manager at HACH LANGE said: "The key feature of the Orbisphere 1100, that sets it apart from other instruments, is its ability to provide highly accurate ultra-low DO measurements with little or no service requirement, saving valuable time and costs in the process.”