NEW PRODUCTS Instruments
SERVOPOTENTIOMETERS T h e Industrial Division of Honeywell, Inc., has just introduced a new line of servopotentiometers for use in a variety of process control applications. T h e line, designated ElectroniK 111, consists of intermediate-size (smaller than ElectroniK 15) instruments which can be obtained with or without controllers. T h e instruments in the line are a circular scale indicator, a circular chart recorder, and a strip chart recorder. Honeywell claims extreme dependability and ruggedness for the ElectroniK 111 instruments; they need “no more than routine service,” and were designed flexible so as to function as broad-purpose servopotentiometers for industrial applications. Some of the applications foreseen by Honeywell include uses for temperature recording and control of autoclaves, reactors, evaporators, distillation columns, heat exchangers and blending tanks, and control of temperatures of heat transfer fluids. Rigid field tests are said to have been exceptionally successful and to have justified the three-plus years spent by the company in industrial development. Each instrument in the ElectroniK 111 line accepts as input any variable that can be converted into a dc millivolt signal-eg., inputs from thermocouples, Radiamatic detectors and resistance thermometers. Solid-state circuits and a precision slidewire with a quadfurcated contactor (to maintain electrical continuity in the presence of dust or vibrations) ensure reliability of operation. Rated performance of the indicator and recorders is excellent: Accuracy is to &0.3y0 of span, reproducibility to ~ k 0 . 1 5 7of ~ span, dead band is 0.1 Yoof span, and span step response time is 5 or 15 sec. Normal operation is assured in ambient temperatures u p to 14O0F or
down to 16OF and in relative humidities between 5 and 957,. T h e strip chart recorder is available with drive speeds of 1, 2, 6, 10, 12, 20, 30, a n d 60 in./hr, with change gears supplied for one half or twice the basic speed. T h e circular chart recorder model has chart speeds of 1, 4, 8, and 24 h r / revolution. Additional attractive features are chassis interchangeability and the availability of chart cartridges which are easily installed in or removed from the strip chart recorder (a 6-in. wide chart is used). Controller options for the ElectroniK 111 line are most attractive features of these servopotentiometers. Controller models are available to enable users to vary electrical or pneumatic signals. For electrical signals, models are obtainable for contact control (on/off control) , Electr-0-Volt current proportioning control (providing 4-20 mA controlled output for S C R s etc.), Electr-0-Line position proportioning control (to drive position-con-
trolling motors), and Electr-0-Pulse time proportioning control (providing relay output of variable pulse length) . Pneumatic controllers are available for two-mode (integral plus proportional) or three-mode (integral plus proportional plus derivative) control; these controllers require 20 & 2 psig air supply and consume the supply at 10 scfh maximum, while providing a 3- 15 psig signal to the process. Electrical and pneumatic control units feature “bumpless” transfer and they can be removed from service while the process continues uninterruptedly under manual control. T h a t Honeywell has given much thought to actual plant applications for the ElectroniK 111 instruments is obvious from a brief check of their list of options, which include such security measures as door locks and omission of the main power switch to minimize the chance of unauthorized tampering. T h e instruments are compact136/8 in. deep, 9 l l 2 in. wide, and 101/2 in. high (14 in. high if a con-
ElectroniK 111 servopotentiometers. Left-strip chart recorder with electrical controller. Right-circular chart recorder with pneumatic contoller VOL. 6 0 NO. 5
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trol unit is used) -and require a 110-V, 60-cps power supply. Price is from $625 to $1100, depending on configuration a n d choice of control units. Delivery is 10 to 12 weeks. Industrial Division, Honeywell Inc. 201 INTERFACE SENSOR
Model 480s ultrasonically detects the interface between one liquid and another liquid, slurry, or resin. It is float-suspended and will detect when there is a fixed quantity of top liquid, irrespective of the amount of bottom liquid. T h e float needs no calibration and the output signal can be used to activate instruments or alarms. Kational Sonics Corp. 202 IN-LINE BLENDERS
A compact line of two- and threecomponent in-line blenders is in production. New models 320 and 330 are completely modular and use solid state components. Lighted pushbuttons give a clear indication of system status. T h e percentage of each component can be accu-
rately set using 3-decade digital thumbwheel switches. Waugh Controls Corp. 203 TEMPERATURE
RECORDER
Model LT-8101 centigrade temperature recorder is new addition to line of miniature strip chart recorders. It has two ranges: -45" to 40°C, and 10" to 120°C, and is available in both flush-mount or portable models. Permanent written record is made on pressure-sensitive chart paper. Amprobe Instru204 ment.
VIDEO TAPE RECORDER
Designed for business and industrial applications, the Model VTR700 is a portable video tape recorder for continuous automatic recording and playback with remote control operation. T h e VTR-700 records picture and sound simultaneously, and can be used for surveillance purposes, since recording can be activated through any electrical signal from a n alarm system. Instant replay is possible through any standard T V receiver or video monitor. Concord Electronics Corp.
206 MOBILE PRESSURE STANDARD
Model MCX mobile pressure calibration standard is designed for the precise calibration of pressure instruments to primary standard accuracies. Ranges are available from 0-6 psi to 0-6000 psi, with accuracies of 0.015y0 of reading to 500 psi, and 0.05% to 6000 psi. Pressure readout is digital, and solenoid valves on control panel give coarse control while vernier settings are used for close control. Volumetrics. 205
C I RCU LATOR
Model E51 i s a combination controller-circulator featuring solidstate controls and all stainless steel construction. Designed for use on the edge of jar-style baths, its 1000I V stepless heater control can heat a 5-gal tank of water from 22" to 50°C in under 25 min. Control accuracy of i0.02"C is achieved. Pumping capacity is 10 l./min and operating range is 30" to 150°C. 207 PolyScience Corp. GAS FLOWMETER
N L series of gaseous mass Aowmeters are available in 10 models with full scale ranges of 100 scc/ min through 650 scc/min for applications where linear output is not required. T h e instruments feature high accuracy and stability, fast response, negligible pressure drop, and 0.1% repeatability. T h e series is supplied for 115-V, 60-cps input. Technology/Versatronics Inc. 208
showers
HUMIDITY SENSOR-TRANSMITTER
New compact sensor-transmitter for wire transmission of humidity signals is intended for humidity sensing to control humidifiers and dehumidifiers, or for remote humidity monitoring into central control and readout panels. These sensor-transmitters provide a current signal of 50 ,LA that is proportional to relative humidity. T w o wall mounting styles are offered. Hygrodynamics Inc. 209
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.counter accidental contamination instantly witn an evenly distributed shower over the entire body. HAWS drench showers send contaminating acids, alkalies, or radio-act've materials down the drain to prevent permanent injJry. Write for HAWS free "First Aid on Tap!" catalog.
HAWS DRINKING FAUCET CO. 1443 Fourth Street Berkeley, California 94710
emergency
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Atso manufacturers o f eye/face wash fountains, drink ng f o u n t a i i s a n d water coolers. Circle No. 3
Model 8170.W
an Readers' Service Card
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
M o r e information is as near as your mailbox. Just circle the number of the item in which you are interested o n the Readers' Information Card.
NONCONTACT THERMOMETER
LlTERATURE
Heat Spy noncontact thermometer indicates surface temperature instantly a n d accurately by responding to infrared energy emitted from a well-defined surface. The exact target area measured is defined by a light beam which enables the operator to aim a t objects 0.1 to 0.4 in. in diameter. Four models are available, covering a total temperature range of 60" to 1000°F or the centigrade equivalents. William Wahl Corp. 210
Viscometers. 4-page folder covers laboratory and field models, and a special hand-cranked model of a line of direct-reading viscometers. Standard components, rotor-bob dimensions, and torsion springs are charted, and a table is included covering the range of viscosities measurable with the F1 spring and the 12 rotor-bob combinations. Also shown are a calibrating kit and sample cups. Fann Instrument Corp. 214
PORTABLE p H METER
T h e new Electromate is a n all solid state pH meter, which ensures immediate warm-up. Readout covers the 0-14 pH range, with repeatability of 0.02 pH and accuracy of ~ 0 . 0 8pH. Millivolt readout is over the 0- to +700-mV range, with repeatability of 2 mV a n d accuracy of k 1 0 mV. Readability is to kO.02 pH or to k 2 mV. An accessory makes the instrument compatible with potentiometric recorders. Beckman Instruments Inc. 211 THERMOCOUPLE CONNECTORS
New line of connectors is intended for use with tungsten-5% rhenium us. tungsten-26yo rhenium thermocoples. Prongs and inserts on the new plugs and jacks are made with Hoskins alloy to match the calibration curves for W-Rh thermocouples generally used in vacuum furnaces and furnaces with inert gas atmospheres. Standard connector bodies withstand up to 350OF; high temperature bodies are obtainable for use up to 800OF. Marlin Manuf. Corp. 212 FILM THICKNESS GAUGE
Inspector dry film thickness gauge is a hand-held instrument which quickly measures film thickness i n mils or microns by correlating the film thickness with the magnetic attraction between a ferromagnetic base and a magnet in the gauge. Accuracy is within -clOOl, or kO.2 mil of target value, whichever is greater. Gauges are available in two measurement ranges: 0 to 25 mils and 0 to 500 p . Gardner Laboratory Inc. 213
Particle Counter. Brochure covers the Model B Coulter Counter and the Model M data reduction attachment which automatically converts basic counter information into volume or weight % readout. The Coulter Counter works in size ranges between 0.5 and 800 p and has been widely adopted for use in research and quality control work. Coulter Electronics 215 Inc. Laboratory Balances. 20-page catalog describes the full line of laboratory balances and weights for industry and education. Features and specifications of every product are described and illustrated, and complete prices are listed. A capacity-sensitivity chart is included to help the reader quickly find the instrument he is interested in. 216 Ohaus Scale Corp. Strip Chart Recorders. Bulletin C-14 describes ERB series electronic strip chart recorders which can record up to 12 different variables in as many colors. Inputs may be from thermocouples, resistance bulbs, or any dc voltage or current signal. The series features photoelectric dc/ac converters and a choice of 6 or 12 chart speeds. The recorders have 8 built-in alarm/ control contacts in the single pen version and up to 14 in the multipoint 217 version. The Foxboro Co. Instrumentation Publications. The Instrument Society of America has produced the new 1968 instrumentation publications catalog which includes descriptive listings, prices, and ordering information on more than 60 proceedings of ISA-sponsored or cosponsored conferences and symposia, 34 standards and recommended practices, and more than 40 books and periodicals. 218 Instrument Society of America. Corrosion Rate Meter. Brochure includes photographs and drawings which describe a newly developed instrument designed to record corrosion measurements. Operation of the meter is based on the polarized admittance instantaneous rate technique, and it may be used successfully on all metals and alloys corroding in electrically conducting solutions. The meter is
powered by rechargeable batteries or 219 by 110-V ac. Petrolite Corp. Thermocouple Wires. Product bulletin 801 gives prices and ordering information on new Omegaclad metalsheathed thermocouple wires insulated with magnesium oxide. The wires are immediately available in both incone1 and type 304 stainless steel sheaths, in sizes from 0.020 in. od to 0.125 in. od. Chromel-alumel, ironconstantan, and copper-constantan are stocked calibrations. Omega Engineering Inc. 220 Indicating Controller. Literature describes the Model 281 Limitrol indicating controller designed for the control of excessive temperatures, either high or low. The controller uses a solidstate, unitized plug-in design which combines a sealed measuring system and control chassis. Barber-Colman 221 co. Pneumatic Instruments. Bulletin D-1OA presents the complete line of small-case pneumatic instruments and shows how these recorders, controllers, indicators, and control stations can control one variable to form complex, integrated control systems. The publication emphasizes the trouble-free operating principles and ease of maintenance of pneumatic instruments. 222 The Foxboro Co. Photoelectric Controls. Catalog describes and illustrates a new line of miniature and subminiature photoelectric controls, including light sources, photocells, and amplifiers. Full technical specifications and schematic drawings of each component are given. An application chart gives indication of the proper items to be employed for typical services. Frost Electronics Corp. 223 Digital Indicators. Series 470 line of digital indicators is described in Bulletin D112. Series consists of 10 different units that will give readouts directly in engineering units such as volts, degrees, psi, and rpm. All the indicators are self-contained and require no additional amplifiers or signal conditioning. Specifications of each model and typical applications are given. Gilmore Industries Inc. 224
Density Capsules. Folder details a line of hermetically sealed glass capsules, less than 1 in. long, used as standards to determine or monitor the density of liquids. The capsules cover a density range of 0.25 to 7.5 g/ml, and are calibrated to an accuracy of 2, 3, or 4 decimal places, as required. Test procedures and complete instructions are given. R. P. Cargille Laboratories Inc. 225 VOL 6 0
NO. 5 M A Y 1 9 6 0
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Furan compounds represent a type of organic chemistry in between the dienic and aromatic types. The chemical reactivity of these compounds is a dual function-that of the unsaturated ring and of the group or groups attached to the ring. The furans possess both dienic and etheric properties due to the very structure of the nucleus. Some of the compounds manufactured by The Quaker Bats Company are listed below together with a description of the more important chemical properties. FURFURAL undergoes reactions c o m m o n t o aldehydes. In addition, f u r f u r a l e x h i b i t s a n u m b e r o f u n i q u e properties d u e t o i t s 5 - m e m b e r e d r i n g .
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FURFURYL ALCOHOL c a n b e successfully esterified a n d etherified under carefully c o n t r o l l e d conditions. W h i l e u n d e r g o i n g t y p i c a l p r i m a r y alcohol reactions, t h e f u r a n r i n g makes o t h e r reactions possible. For example, f u r f u r y l alcohol i s very sensitive t o acidic
reagents and resinifies readily-a very i m p o r t a n t characteristic t o t h e f o u n d r y i n d u s t r y a n d m a n u f a c t u r e r s o f corrosion-resistant resins. TETRAHYDROFURFURYL ALCOHOL exhibits t h e behavior characteristics o f b o t h alcohols and ethers. T h e h y d r o x y l can be replaced b y o t h e r f u n c t i o n a l g r o u p s a n d t h e e t h e r i c r i n g can b e cleaved t o a variety o f o p e n chain c o m p o u n d s w h i c h can, in s o m e instances, be recyclized t o f i v e - or six-membered heterocyclic types.
The polyfunctionality of these compounds presents a challenge and an opportunity to the investigator. A number of furan type reactions have been developed to industrial significance. The future should witness a great many more as this field of chemistry is further explored. For a general survey of the furans, write for Bulletin 201-E.
In New York: Room 537U, 1 2 0 W a l l St., New York 1 0 0 0 5
In California: Room 43711, 3 5 4 21 st St., Oakland 9461 2
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In Ohio: 20575 Center Ridge Rd., Cleveland 441 16 Circle NO. 4 on Readers’ Service Card
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INDUSTRIAL A N D ENGINEERING CHEMISTRY
In The United Kingdom Quaker Oats, Ltd., Bridge Road, Southall, England
In Europe: Quaker Furans N.V. P.O. Box 175 Antwerp 1, Belgium
N EW PRO DUCTS Chemicals and Materials
EPOXY RESIN PAINT
New white paint is now available to supplement a line of epoxy resin paints designed for the protection of critical surfaces. T h e new paint dries to a hard high-gloss enamel finish that will not chip, crack, or peel. I t dries to the touch in less than an hour at 70°F. T h e paint withstands dry heat to 400°F,boiling water, and live steam a n d is not affected by most acids and alkalies. Fisher Scientific Co. 301 NICKEL PLATING SOLUTION
Electroless nickel plating solution now commercially available in premixed form. Only additive needed is N H 4 0 H for p H control. T h e solution does not degrade in operation or storage. It is used for electroless plating in which nickel is deposited on a substrate without the need for current. Most metals can be plated. Allied Chemical 302 co.
Is
PUMPABLE DESLCCANT
DesiCal is a new pumpable calcium oxide desiccant dispersion in a light naphthenic process oil, and can be pumped directly through enclosed, positively protected pipeline systems into the manufacturing process. DesiCal has an advantage over powdered CaO desiccant in that it creates no dust problem and does not absorb water from the air before being used. Basic Chemicals 303 co.
It is nontoxic, and water potability is maintained at low (
