What's New
Macromolecular Characterization is this GPC/SEC System’s Specialty
Designed for macromolecular characterization, the Triple Detector gel-permeation chromatography/size-exclusion chromatography (GPC/SEC) system features an integrated triple detector array (TDA) comprised of a unique low-angle light-scattering (LALS) detector, four capillary viscometer detectors; a GPCmax pump, autosampler and degasser module; and OmniSEC software for multiple detection analysis and complete system control. In a single GPC/SEC experiment, this system can provide absolute molecular weight without the column calibration, extrapolations or corrections required by other techniques. It can also determine molecular size (to less than 1 nm), intrinsic viscosity, as well as information on structure, conformation, branching, aggregation and copolymer composition.
Appeared In Issue: July 2006
Viscotek
www.viscotek.com
These Meters are Designed to Handle Nuclear Applications
The NQL series of loop-powered instruments is now 10CFR50-B-qualified (a Nuclear Regulatory Commission requirement for nuclear power plants). The NQL consists of eight models that accept 4–20 or 10–50-mA input and displays the process variable in digital or digital/bargraph mode. Both LCD and LED versions are available and some models come with RS232E I/O. The new series is intended for replacement (or new installations) of analog meters where only the two-signal wires are available (no power source). The LCD versions come with automatic tricolor backlight. Four packages are available: 4.5-in. switchboard; 6-in. edgewise and 1.75-in. wide; 6-in. edgewise and 1-in. wide; and miniature 2.9 in. ×1.5 in. × 1.5 in. (digital only).OTEK Corp.
Appeared In Issue: July 2006
Otek Corp.
www.otekcorp.com
Flowmeter Measures Accurately in Closed Conduits
Capable of handling demanding water flow measurements, the Marsh Single-Mag flowmeter requires little maintenance and is easy to install and use. Equipped with a unique electromagnetic technology, the device serves in pressurized line applications from 2 in. to 96 in. It has a flow accuracy of ±2% of reading and operates over a wide flow range, from –5 to 20 ft/s. The Single-Mag provides a reliable 4–20-mA analog output signal for monitoring and alarming. The flowmeter can also measure pressures up to 250 psi and temperatures up to 160°F in stainless steel pipes. It can be used in a wide range of applications in conductive and harsh fluids, including chemical-laden flows, slurries and sludges.
Appeared In Issue: July 2006
McCrometer
www.mccrometer.com
Moisture Analyzer Analyzes Down to 2-ppb Level
An economical alternative for applications that don’t require the most-demanding detection limits, the DF-745 Nano Trace moisture analyzer offers a low-detection limit (LDL) of 2 ppb. The device uses tunable diode laser absorption spectroscopy (TDLAS) technology and features: an accuracy of greater than ±3% of reading or ±1 ppb; a typical response speed of 10 min; and an upset recovery time of less than 5 min.
Appeared In Issue: July 2006
Delta F
www.delta-f.com
Hermetically Sealed Position Sensors Operate in Corrosive Environments
Enclosed in a heavy-wall, stainless steel housing, the HSE/HSER 750 Series of 3/4-in.-dia. DC-operated linear-variable-displacement transducers (LVDTs) are impervious to dirt, water, steam and other corrosive elements. The units are ideal for use in hydraulic-cylinder positioning, valve-position sensing, automatic assembly equipment and other industrial applications with hostile conditions. Incorporating built-in electronics, the sensors provide the desirable features of an AC-LVDT, such as frictionless operation and dynamic response, with the simplicity of DC input and pre-calibrated DC output. Units operate in conjunction with programmable logic controllers (PLCs), digital indicators, computer-based data processors and quality-control (QC) data collection systems. Available in ranges from 0.100 in. to 20.00 in., the LVDTs feature high resolution, a repeatability error of less than ±0.01% of full-scale output (FSO), and a hysteresis error of less than ±0.01% of FSO. The standard maximum linearity error is ±0.25% of FSO. The units operate at temperatures from 0°F to 160°F and pressures up to 1,000 psi.
Appeared In Issue: July 2006
Macro Sensors
www.macrosensors.com
Dose/Fill Accurately Using this Full-Bore Magflowmeter
The Type 8055 full-bore magflowmeter permits precise, highly accurate dosing/filling control across a wide array of flow applications. The continuous or batch control Type 8055 incorporates two transistor outputs (40-VDC, 100-mA), 0/4–20-mA current output and RS485. The flowmeter is available in three versions — general-purpose (ANSI or wafer flange), low-flow (NPT) and sanitary (Tri-Clamp). Measuring range, orifice-size range and fluid-temperature range, respectively, for the: general-purpose version are 3.2–1,233 gal/min, 1–4 in. and 32–140°F ; low-flow version are 0.04–55 gal/min, 1/8–3/4 in. and –4–302°F; and sanitary version are 0.04–1,233 gal/min, 1/8–4 in. and –4–140°F. For all versions: accuracy is ±0.2% of reading (for liquid velocity >3.28 ft/s); repeatability is better than 0.1%; minimum conductivity is 5 µS/cm; ambient temperature range is –4°F–140°F; and maximum fluid pressure permitted is 234 psi.
Appeared In Issue: July 2006
Burkert
www.burkert-usa.com
Get True Particle-Size Measurements with this Analyzer
Ideal for characterizing spherical, irregularly shaped and acicular (needle-like) fiber particles, agglomerations, or mixtures, the family of EyeTech particle-size and image analyzers has a size channel that employs a unique laser obscuration method that yields direct and true single-particle-size measurements. It also has an image-analysis channel that uses dynamic and/or static methods. Accurate and easy to set up, the units feature: size ranges of 0.1–3,600 µm; dynamic range of 600:1; and a high resolution of 0.33% of full scale (min. 0.2 µm). The laser channel does not assume sphericity and is not subject to effects of optical and physical properties of particles or medium (such as refractive indices, absorption, surface texture, porosity, electrical conductivity, viscosity variations, Brownian motion and thermal convection). Particles can be seen real time during measurements.
Appeared In Issue: July 2006
Metroploitan Computer Corp. (MCC), North American distributor for Ankersmid
www.particlesize.com
Magnetically Coupled Valve Reduces Environmental Contamination
The Roetelmann ball valve is actuated through a sealed canister by means of a magnetic coupling and utilizes a non-contact electromagnetic sensor to provide positive indication of the ball position. The valve’s design eliminates the potential of hazardous release by encapsulating the stem and seals in a welded canister — should the seals fail, the medium cannot escape to the atmosphere. The valves are offered in a variety of construction and seal materials to meet customer requirements. Welded- or flanged-end connections, locking devices to meet OSHA requirements, and actuators are available.
Appeared In Issue: July 2006
IC Flow Controls, Inc.
www.icflow.com
Durable Butterfly Valve Features Low Pressure Drop
Available in a size range from 3 in. to 30 in., and with high-flow capacities as a major priority, the AZURE AWWA butterfly valves are designed to the ANSI/AWWA C504 butterfly valve standard. Their concentric high-strength ductile-iron disc with stainless-steel edge seating provides minimal pressure drop with low turbulence. The 24-in. and smaller designs utilize a lens-shaped disc that provides the smallest protrusion possible in the flow stream. The valve seat is simultaneously bonded and vulcanized to the valve body. The entire interior waterway of the valve body is rubber-lined to prevent corrosion and extend service life. On 30-in. and larger valves, the seat is adjustable and replaceable in the field without the use of special tools.
Appeared In Issue: July 2006
Danfoss Flomatic Corp.
www.flomatic.com
Semi-Hermetic Scroll Vacuum Pump/Compressor Delivers Over 80% Volumetric Efficiency
Originally developed to pump helium for a space-based cryo-cooler, this new semi-hermetic scroll features a patent-pending design that completely seals the pumping section of the unit, but allows cooling of both scrolls. Cool operation enables the unit to operate effectively at higher pressures and vacuums. As a compressor, the unit can develop up to 60 psig and has a displacement of 2 ft3/min. The vacuum model can develop up to 200 mtorr ultimate vacuum, with a displacement of 2 ft3/min. The unit runs at volumetric efficiencies greater than 80% and its wetted surfaces are constructed of stainless steel, nickel and hard anodized aluminum. Standard seals are PTFE composite, with other materials, such as polyimide, available to withstand specific gases.
Appeared In Issue: July 2006
Air Squared, Inc.
www.airsquared.com
Peristaltic Pump Handles Harsh Processing Applications Up to 100 psi
The 520RE high-pressure chemical-metering peristaltic pump can operate at pressures up to 100 psi. Its combination of tube elements and pumphead design allows it to be used in applications requiring accurate metering, dosing and transferring of harsh chemicals, including sodium hypochlorite, ferric chloride, sodium bisulfite, aluminum, fluoride, carbon and lime slurries, polymers, aqueous ammonia, potassium permanganate and caustic slurries. The 520RE pump offers flows of 3,500 mL/min at 30 psi to 450 mL/min at 100 psi. Reliable, accurate and easy to use, the pump covers a wide range of applications, including low-shear feed for the contamination-free transfer of acids, bases and slurries found in chemical-based industries. Validating a sanitary process is made easy with the 520RE because all element-wetted parts are USP Class VI and ISO 10993 certified with a laser-etched lot number.
Appeared In Issue: July 2006
Watson-Marlow Bredel
http://www.watson-marlow.com
Radial-Flow Membrane Contactor is Well-Suited for Degassing and Debubbling
The 2 × 6 SuperPhobic radial-flow membrane contactor is an all-polyolefin degassing device that is resistant to many aggressive ink and coating solutions and various solvents. It is small and compact and provides inline degassing and debubbling of low-surface-tension solutions. The contactor uses a radial flow path through the contactor to maximize the surface area and optimize degassing efficiency. Hollow-fiber membrane is knit into a fabric array and wound around a central distribution tube. Liquid flows through the distribution tube, which is parallel to the hollow-fiber membrane. The liquid is forced radially over the membrane and exits the contactor through a side port in the housing. With 5.4 ft2 of membrane area, the contactor and one device can process up to 1 L/min of liquid. Larger contactors are also available for degassing higher volumes.
Appeared In Issue: July 2006
Membrana
www.membrana.com
Lowest-KR-Rated Disk Offers Highest Protection
Pressure relief systems have the lowest pressure drop and the highest flow when the rupture disk with the lowest KR (a rating given by ASME) is used. The Pro+ rupture disk has earned the lowest currently registered KR rating for a reverse-buckling disk family, 0.29, making it one of the most effective pressure relief devices on the market and earning it a UD ASME authorized stamp. The disk’s 95% operating ratio guards against fatigue and premature disk rupture in applications with high operating-to-set ratios. Burst pressures from 8 to 750 psig ensure consistent performance in a wide range of uses from high- to low-pressure environments, with long service life even in high-cycling applications. The one-piece design is scored on the vent side to prevent product buildup.
Appeared In Issue: July 2006
Oseco
www.oseco.com
Filter Media Has Double the Service Life and Half the Pressure Drop
The HemiPleat high-efficiency (HE) filter offers an unsurpassed minimum efficiency reporting value (MERV) 15 rating, coupled with up to twice the service life and half the pressure drop of standard dust collector cartridge filters. Available in filter sizes to fit any cartridge collector, the HemiPleat HE media is ideal for the capture of toxic and other ultra-fine dusts, and for applications where process air is recirculated downstream of the collector for energy savings. The filter combines the HemiPleat technology with an HE synthetic fine-fiber media that yields a filtration efficiency of 99.999% for 0.5-mm particles and larger. A patent-pending design holds the pleats of the filter open, making virtually all the media surface available for filtration. The wide, uniform spacing results in lower pressure drop for more efficient performance. This design allows dust to eject readily from deep within the pleats during pulse cleaning.
Appeared In Issue: July 2006
Farr Air Pollution Control
www.farrapc.com
Protect Cold Water Basins with this Corrosion Resistant Material
The TriArmor corrosion protection system features a new material of construction that extends the life of cold water basins — critical components of a cooling tower. The system exceeds the corrosion resistance of stainless steel with a more affordable price. It is resistant to all water chemistries and water treatment chemicals, and is impervious to high chloride levels. The system is backed with a 5-yr leak-and-corrosion warranty for all cold water basins applications.
Appeared In Issue: July 2006
Baltimore Aircoil Co.
www.baltimoreaircoil.com