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Analytical Instrumentation Eco-Effi cient Oil-in-Water Testing


Ecology meets economy in ERACHECK ECO by combining an advanced optical fi lter-based measurement technique with the ecologically safe extraction solvent cyclohexane. The use of a cost-effi cient measurement technology in combination with the low-cost solvent cyclohexane gives you the most economical oil-in-water tester available today.


Adding ERACHECK ECO to Eralytics’ product line is a huge step towards a cleaner environment. But let’s take a look at the big picture and start from the beginning: In 1989 the Montreal protocol decided to forbid all CFC solvents by 2020 at the latest due to their harmful effects on the ozone layer. These types of solvents were used to measure one ecologically important parameter called oil-in-water – a closely monitored value to decide if waste water or discharge water shall be allowed to be disposed as is or if it needs to be further purifi ed to be safe for the environment.


After 1989 the US Environmental Protection Agency (EPA) switched from the previous IR method ASTM D3921, which used a CFC solvent, to a gravimetrical method called EPA 1664B. In Europe people shifted to gas chromatography using method ISO 9377-2. Both techniques suffer from several drawbacks in comparison with the IR methods. They are less repeatable and more time consuming.


There was and still is a need for an easy-to-operate measurement technique which offers all the advantages of the IR methods but without the need for a CFC solvent such as Freon 113. ERACHECK PRO was the fi rst oil-in-water tester released by eralytics in 2008 to offer that. It uses a high-end quantum cascade laser light source which allows measuring extracted oil in the ecologically friendly solvent cyclohexane with highest precision in the low sub-ppm range. Quantum cascade lasers are highly effi cient, but on the downside, they are also a pretty costly technology. So eralytics engineers looked into fi nding a measurement technique that was considerably more cost-effi cient, without compromising on the benefi ts of ERACHECK PRO.


In hindsight we can say that this was no easy task at all. But we succeeded in building an instrument based on optical high-tech fi lters which can measure oil-in-water down to a concentration of 0.5 mg/l. We call it ERACHECK ECO. It still uses the eco-friendly solvent cyclohexane and is the most economical highly precise analyser available on the market today.


Eralytics will continue to offer ERACHECK PRO, because it reaches an even lower limit of detection and it tops the ERACHECK ECO regarding instrument repeatability. Therefore, the PRO model remains the instrument of choice for specialised high-end applications, whereas ERACHECK ECO is designed to be the new sturdy workhorse for oil-in-water testing.


Recent Awards of Multiple U.S. Patents Reinforce Spectro Scientifi c’s Leadership Role in Fluid Analysis Solutions


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21


Myron L®


Company’s new 900 Series industrial monitor/


controller combines fl exibility, accuracy and reliability. It is the ideal instrument for even the most demanding water treatment applications.


Measurement capabilities include: Conductivity, Resistivity, Salinity, TDS, pH, ORP, Temperature, mVDC, Flow and % Rejection. It includes a 4-20 mA input. Standard outputs are a 0-10 VDC recorder output and a Relay output. Available optional outputs include a 4-20 mA, an RS-485 output, as well as 2 additional Relays.


Spectro Scientifi c, one of the world’s largest suppliers of oil, fuel, and processed-water analysis instrumentation and software, recently has been awarded three U.S. patents covering a spectrum of analysis technologies ranging from portable instruments and software to online sensors.


Patent US9228956, “In-situ fl uid analysis sensor bolt” describes an innovative online fl uid sensor based on a bolt that is engineered to permit fl uid to fl ow through and across its stem past integrated source and detector electronics. The inexpensive sensor system has no moving parts and can provide readings of TBN, TAN, water and oxidation in various lubricants without continual calibration in real time. The sensor bolt is designed to permit easy integration into machinery systems via Ethernet, serial or USB interface.


Patent US9678001, “Route-based substance analysis system and method” describes a feature of Spectro’s FluidScan® 1100 analyser that enables service engineers to perform customized in-fi eld oil analysis on selected subsets of assets they maintain on daily service routes. The method facilitates condition-based maintenance on the selected assets by utilizing specifi c information regarding both the assets and their associated lubricants to create a distinct set of system warnings and alarms for each asset.


Patent US9638669, “Portable Fuel Dilution Meter and Method” describes how Spectro’s FDM 6000 Series fuel dilution meter utilises a special sample vial and sampling method to perform accurate and direct fuel dilution measurement quickly, using only a small sample of fl uid. The method expands and increases the effi ciency of the well-established surface acoustic wave technology for the assessment of fuel contamination in lubricants. It reduces the amount of sample needed to perform the analysis by nearly a factor of 100, and also eliminates sample cleanup by use of a disposable plastic vial.


Spectro Scientifi c Chief Technology Offi cer Dr. Patrick Henning said, “These patents are a refl ection of Spectro Scientifi c’s leadership and knowledge in providing comprehensive fl uid analysis solutions to our customers. They range from condition-based maintenance software and portable, handheld instrumentation to online technologies. These three areas comprise the core of providing real-time solutions to the broad range of industries that rely on performance fl uids.”


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The instrument’s display can show up to 4 measurements simultaneously. Sensor setup allows the user to eliminate error due to cable length and enter custom cell constants for conductivity sensors. Calibration is electronic. It’s 3.5” touchscreen and intuitive GUI make it simple to set up, simple to use and simple to adapt to your specifi c needs.


The Myron L® Company 900: A high level performer for applications where high level performance is an absolute requirement.


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