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Analytical Instrumentation Intrinsically Safe Viscometer for Lab-Scale Reaction Vessels
Hydramotion (UK) announce that its ReactaVisc RV3 research-grade viscometers are now available in intrinsically safe versions certified for use in Hazardous Areas up to and including Zone 0 (explosive atmosphere continuously present), equivalent to Class 1 Division 1 Group A.
Both the standard and the high-temperature models are now available as intrinsically safe versions with ATEX / IEC certification to Ga Ex ia IIC T4 - T6, allowing the transducers to be operated even in the most hazardous environments. This means that the benefits of continuous, real-time viscosity measurement can now be exploited in almost any laboratory or pilot-scale application.
Ideal for monitoring oil viscosity in the lab, the ReactaVisc can be used at temperatures up to 250°C without requiring any special cooling. Efficient design ensures that sensitive components in the head enclosure are protected from overheating, even though the sensor probe itself is at full fluid temperature. The advantage is that there is no risk of measurement errors resulting from the viscosity changes that would be caused by localised cooling of the fluid around the sensor.
The ReactaVisc has a compact enclosure which takes up minimal space at the top of the vessel, leaving plenty of room for ancillary equipment such as stirrers. The sensor is a solid probe with no moving parts, bearings or seals that could wear out or fail in service, so routine maintenance is not required.
Viscosity is measured every two seconds and displayed on the separate VP550 signal processor unit included in the system. Output includes a 4 - 20 mA analogue viscosity signal and an RS485 serial data link. The optional ViscoLink software package enables measurement data to be logged and transferred to a PC for analysis.
The ReactaVisc is supplied with a fitting consisting of a compression nut plus an adaptor made to suit the desired installation. The shaft is passed through the adaptor and the compression nut is hand-tightened at the required position, forming an effective seal. The immersion depth is adjusted simply by loosening the fitting, moving as required, and re-tightening. The whole operation can be completed in seconds. This versatile feature enables the immersion depth of the sensor can be adjusted at will, making it easy to use the viscometer in differing volumes of fluid or in vessels of varying capacity. No recalibration is needed when the viscometer is transferred from one vessel to another, since calibration is unaffected by the volume of fluid or the dimensions of the container.
Reader Reply Card No 90 Total Oil and Grease in Water and Soil – Portable and CFC-Free!
Eralytics (Austria), proudly presents the Eracheck; the ultimate solution for the fast and easy measurement of sub-ppm concentrations of oil in water and soil. The innovative and patented QCL-IR (Quantum Cascade Laser Infra-Red) measuring technology finally allows the CFC-free testing of total oil and grease and total petroleum hydrocarbons in water and soil samples within an unbeaten combination of measurement range (0-2000 mg/l) and limit of detection (0.25 mg/l).
A quick and easy field analysis method for determining oil and grease concentration levels is important for offshore oil platforms, refineries and oil depots. It can also be operated flexibly to address a series of process issues. The most common sites of operation are prior to and after water purification systems, such as primary to tertiary water separators, water feeds and filtration equipment.
With the manufacture of Freon 113 banned by the Montreal Protocol, older methods like ASTM D 3921 and Din 38409 that used infrared analysis and Freon as the extraction solvent had to be replaced. The Eracheck uses a very similar extraction procedure, but comes with the CFC-free, cheap and easily available solvents; Cyclohexane or Cyclopentan. It offers maximum precision in sub-ppm range over a wide measuring range in excellent correlation to ASTM D3921 and D7066. Eracheck is a portable stand-alone analyser equipped with the latest communication technology. Data can be saved onto a memory stick and documented in popular PC worksheet formats for further data analysis.
Reader Reply Card No 91
New Vials Let Users Anticipate Unexpected Peaks
Reader Reply Card No 92
Agilent Technologies Inc. (USA) have introduced Agilent MS Analysed Vials, the first vials and closures to have been analysed by GC/MS and LC/MS and shipped with their mass spectra in a single package. The new vials allow scientists to anticipate any ghost peaks caused by the vials, thereby eliminating un-necessary rework. The vials, caps and septa, and their analytical data are lot-specific and fully traceable.
“The rapid adoption of extremely sensitive mass spec systems puts more emphasis on the need for high-purity, validated supplies,” said JR Daversa, Agilent global marketing program manager, Chemistries and Supplies Division. “By analysing these vials and closures and including lot-specific MS data, we’re saving users the effort of performing this step while still achieving high-confidence results.”
In addition to the vials and certificate of analysis, each kit contains septa and caps for convenience. They are available in certified screwtop and crimp- top vial packs, in clear or amber
Reader Reply Card No 93 Reader Reply Card No 94 Reader Reply Card No 95
Annual Buyers’ Guide 2011
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