new products - ACS Publications - American Chemical Society

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NEW PRODUCTS Instruments PROCESS CHROMATOGRAPH

The manufacturer’s Model 26222A is designed for single-stream analysis, either liquid or gas. This single-stream specialization makes the unit particularly valuable for closed-loop control. T h e simplified design concept not only increases instrument reliability, but also reduces total instrument cost. It makes possible analysis of samples containing components which cannot be analyzed adequately using single-column chromatographs. T h e control unit chassis is completely enclosed in a steel case with a glass door. Process Analyzers, Inc. 401

INGREDIENT BATCHING SCALE

A beam-type scale provides an accurate and inexpensive solution to multiple ingredient batching. T h e main beam is normally used for tare purposes. T h e additional beams are charging beams used to weigh each ingredient. Each beam is sized for its particular requirement, and weight settings are readily accomplished using direct reading weight registers. Scales can be provided singularly or in combination to provide either accumulative, simultaneous, or combination batching functions. Electrical-mechanical or solid state controls provide systems to meet all requirements. Cu tler-Hammer, Inc. 402

WEISSENBERG RHEOGONIOMETER

A new model which provides the most comprehensive instrument for measuring viscosity and elasticity is the R-17. It brings new levels of versatility and accuracy to both quality control and research by telling more about materials’ flow properties and their behavior under virtually all conditions and processes. T h e R-17 can be used in the analysis of fluid material ranging in consistency from Walter to bitumen, at temperatures from -30’ to 104

+400° C. I t takes measurements as functions of time in all three dimensions of space. By measuring normal force as well as viscosity, the complete instrument permits the calculation of materials’ elasticity. Torsional testing is possible in oscillation as well as in steady rotation. Other flow properties such as dilatancy, thixotropy, relaxation, and retardation can be measured. Martin Sweets Co. 403 I N G R E D I E N T B A T C H I N G SCALE

TEMPERATURE CONTROLLER

Accurate setpoint over a wide temperature range and fractional degree indication of temperature deviation are features of the Model 63 proportional temperature controller. A linearized, highly stabilized null balance bridge network provides direct calibration of a 0 to 1000 counting dial to the platinumresistance temperature detector. T h e temperature deviation meter presents an expanded scale indication of the difference between actual temperature and setpoint. T h e controller is all solid state design with no moving parts except the meters which function independently of the control circuits. ISOlated sensor leads, fail-safe operation to open circuit and automatic overvoltage protection are standard. Athena Controls, Inc. 404

TVEISSENBERG R H E O G O S I O M E T E R

THERMOCOUPLE/THERMISTOR PROBE

T h e combination assemblies are especially adaptable to applications in process industries where multipoint temperature sensing and control are requirements. Both sensors are enclosed in a single sheath, ruggedized, and sealed for protection against mechanical damage and contamination. T h e dual assembly utilizes each component to best advantage, making the thermocouple available for indication and the thermistor for control. T h e combinations are available in standard configurations and can be custom designed to meet specific applica405 tion needs. Conax Corp.

INDUSTRIAL AND ENGINEERING CHEMISTRY

T E M P E R A T U R E CONTROLLER

(Continued on page 107)

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Additional Sources of Product Information Four other American Chemical Society publications offer you a similar product information service: the ACS Laboratory Guide, Analytical Chemistry, Chemical & Engineering News, and Environmental Science & Technology. If the product you need does not appear in this issue of Industrial & Engineering chemistry, chances are you'll find it in one of the other four sources. For example, if you are looking for a research instrument or want to locate the manufacturers of specific types of research products, consult the annual ACS Laboratory Guide. It's the definitive directory of earch instruments, equipnt, chemicals, services, tradees, books, supply houses, and manufacturers.

VACUUM GAUGE

BRUSH VISCOMETER

T h e brushometer is a low cost instrument for quickly determining brushing viscosity of paints and other materials. Operating at a shear rate of 18,500 reciprocal sec., the instrument provides a reliable standardized measurement of the amount of drag felt by a painter when brushing various types of paint. This drag is expressed in poise values which are obtained from the brushometer's scale. T h e brushometer consists of a hollow, grooved, stainless steel shaft which is rotated at constant velocity by an 1800-r.p.m. motor. Surrounding this shaft is a spring-mounted open cup which provides a small clearance gap of about 0.002 in., producing the effective shear rate of 18,500 sec.-l As the shaft is rotated in the paint sample, the paint is rapidly drawn up into Ithe small clearance gap. A pointer attached to the movable cup indicates on the brushometer scale the angular torque produced in the paint sample. This torque is then converted into a poise value. Gardner Laboratory, Inc. 406 HUM1DlTY CONTROLLER

T h e new unit uses a special nylon sensing element and is designed for industrial and agricultural applications. T h e controller is especially suitable for textile mills, crop driers, paper mills, tobacco barns, warehouses, steel mills, greenhouses, processing rooms, chemical storerooms, and wherever a 5% relative humidity operating differential is tolerable. Control elements are mounted inside an all-steel wraparound case and a fine-mesh screen sifts out dirt, fibers, small shreds, or other contaminants that might interfere with control operation. T h e controller has a working range from 20 to SO% relative humidity with a 5 70 relative humidity operating differential. Maximum ambient operating temperature is 125" F. The unit works on 120-volt alternating current; 240-volt versions are optional. Minneapolis Honeywell. 407 M o r e i n f o r m a t i o n is a s n e a r a s y o u r m a i l b o x . Just c i r c l e t h e n u m b e r of the i t e m i n which you a r e i n t e r e s t e d o n t h e R e a d e r s ' I n f o r m a t i o n Card.

A commercially available device that will reliably measure the very low pressures that can now be obtained by modern vacuum equipment. T h e gauge can be used on any high or ultrahigh vacuum system. It is well suited for space-simulation studies, surface studies including low energy electron diffraction, materials testing, vacuum furnace tasks, and gauge calibration. T h e device measures accurately from 1 x 10-4 torr to 1 x 10-13 torr because the ion collector is optically shielded from the main source of x-ray current. Pressure is displayed on a single meter with cycle logarithmic scale. Var ssoci408 ates. PYROMETER

Model 9290, a noncontact instrument, has a special photovoltaic detector cell that generates a signal directly proportional to radiation intensity. Its short wavelength minimizes external effects from emissivity, steam, smoke, and dirt. T h e self-contained unit eliminates need for external power or batteries. T h e units are available in three ranges: 1400" to 2200" F., 2200" to 3400" F., and 2800" to 4800" F. Rockwell Mfg. Co. 409 LEVEL CONTROL SYSTEM

A liquid nitrogen level control system for use with self-pressurized Dewars and incorporating a Dewar switching system is available. T h e system is designed to maintain an optimum level of liquid nitrogen in a cold trap. I n this system, ,two sensing elements are incorporated into a flexible stainless steelsheathed probe. One element acts as a low limit and is located at the top of the probe; (the other element, which is the upper limit, is located a finite distance above the lower limit. When the level of the liquid in the trap falls below the tip of the sensing probe, the controller actuates a flow control valve. Flow of liquid nitrogen is then initiated and continues until the level in the trap rises to the upper limit. T h e cycle is repeated automatically and is independent of time, pressure, cooldown rate, and other flow variables. T h e system consists of a controller, a sensing probe, and two valve alarm assemblies. International Conitrols Corp. 410

Mail Coupon for Czechoslovak Technical Paper in English translation How does an Eastern Reviewer, conditioned by Eastern literature, see the aqueous chemistry of zirconium and hafnium? TAM- manufacturer of zirconium compounds for industry-now offers you a complete English translation of a Paper by 1. Hals of the Czechoslovak Academy of Sciences. Unlike many Western reviews (which often suffer from insufficient detail because of the language barrier), this Paper provides an intriguing Eastern-oriented insight for broadening your scope of the aqueous chemistry of solution. TAM also hopes this Paper will provide stimulating research data for evaluating the potential of zirconium for a remarkably broad range of applications and for your industry in particular. For example, zirconium forms complex anions and cations; "ties" together diverse molecules in amazingly strong chemical bonds: and promotes the effectiveness of other materials in reactions i t does not itself enter.

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(Continued on page 110) Circle No. 19 on Readers' Service Card

VOL. 5 9

NO. 8

AUGUST 1967

107

LITERATURE Programmed Controller. Catalog 65 16A features block diagrams and nontechnical descriptions for the use of the Marc 4905 programmed controller for conveyor control, food and chemical batching and blending, electrical product testing, and automatic control of power generation and transmission equipment. I t features a simple, changeable, stored program memory unit and mercury wetted output relays for actuation of controlled equipment. It performs start-up and shutdown as well as automated operation in response to various combinations of external events and condi411 tions. Moore Associates, Inc. Bellows Meter. T h e new Nolte bellows meter body and associated flow metering instruments are described in an 8-page bulletin. The meter body employs no fill liquid which may contaminate the process or equipment, and if the need arises can be simply and quickly repaired in the field without disconnecting the meter from the pipeline, Also described in the bulletin are the Model 515 h'olte M Meter, a neat rugged 12-in. circular chart recorder, which incorporates the troublefree integrator for actuation either by a 3-volt d.c. battery for 1IO-volt ax. 60-

cycle synchronous motor. Also described are conversion kits for installing the Nolte meter body on recorders to replace existing meter bodies, either mercury or bellows type. T h e bulletin includes complete specifications as well as ordering information. KingmannWhite, Inc. 412 Flow Controller. This brochure describes the unit and illustrates its applications on bubbler systems of liquid level measurement. Included are specifications, cutaways with principle of operation, application drawings, and dimensions. A choice of brass or stainless steel construction is available. Instruments, Inc. 413 X-Ray Emission Analysis. Bulletin 7A-4090, a 20-page laboratory application report, covers recent performance improvements in x-ray emission analysis for composition control in glass making. Greater accuracy is reported in the x-ray analysis of iron, aluminum, calcium, magnesium, titanium, potassium, sodium, and sulfur as a result of new high intensity optics. T h e bulletin shows that analysis by x-ray emission techniques is both fast and accurate and has simplified the procedures for quality control in glass production. 414 General Electric Co.

Thermocouples. A 4-page catalog, No. KC-2, illustrates three types of plastics processing thermocouples and accessories. Spring-loaded thermocouples used to increase the accuracy and reliability of zone temperature control on injection molding machine and extruder barrels, and for sealing temperatures on packaging machines are described. Leakproof plastic melt thermocouples inserted directly into the melt stream on extruder heads and die adapters are illustrated. Also featured are miniature protected thermocouples which measure liquid and gas temperatures normally encountered in plastics processing operations. Thermo Electric Co. 415 Ultrasonic Instrumentation. An &page bulletin discusses the modular reflectoscope concept for ultrasonic testing instrumentation. As described in the illustrated literature, the modular concept for ultrasonic testing instrumentation makes possible innumerable combinations from simple manual testing units to complex multifunction arrangements. T h e basic instrument in the modular concept is designed to provide maximum flexibility in ultrasonic, nondestructive, flaw-detection systems. I t s use permits an economical building block method of selecting only those units necessary for specific testing jobs. Automation Industries, Inc.

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They can shoot down t o u g h v process problems. Sure and quick solutions come right out of the sure, quick facts you find in CHEMICAL ENGINEERING C A T A L O G . Turn your t r i g g e r - f i n g e r loose in the 5-way index. Facts come tumbling out-all the latest facts about equipment, materials of construction and specialized services. The facts you need when you attack a processing problem. Facts are like bullets, and CEC is loaded with them! Ready, aim, fire. ENGl NEERl NG CATALOG

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I N D U S T R I A L A N D E N G I N E E R I N G CHEMISTRY

Impedance, Admittance, and Transfer Function Measurements. An %page brochure gives details on a family of integrated instruments for complex impedance, admittance, and transfer function, as well as many other related products. It describes instrumentation for materials research, electroacoustical transducers, electrical components, active and passive networks, mechanical and acoustical systems, and impedance studies in physiology. This 2-page color brochure is illustrated with detailed charts and photos. Complete specifications on main frame units plus plug-ins and adapters are included. 417 Dranetz Engineering Labs, Inc. Piezotron Accelerometers. A 4-page illustrated bulletin provides answers to frequently asked questions about the easy-to-use low impedance Piezotron quartz transducers which require only one wire for both signal and power. Subjects covered include power requirements, interface considerations, shock measurements, use with long cables, environmental characteristics, and mounting information. T h e bulletin contains a system diagram and a diagram showing operation through a charge ampli418 fier, Kistler Instrument Corp.