Automatic Moisture Sensor for Measurement and Control of Cotton Ginning Processes

1983 ◽  
Vol 105 (1) ◽  
pp. 27-30 ◽  
Author(s):  
A. H. Waldie ◽  
S. E. Hughs ◽  
M. N. Gillum
Keyword(s):  
Dielectric Constant ◽  
Process Control ◽  
Moisture Content ◽  
Cotton Fiber ◽  
Sufficient Accuracy ◽  
Moisture Sensor ◽  
Percent Moisture ◽  
And Control ◽  
Measurement And Control ◽  
Conventional Oven

Cotton fiber moisture content is one of the most important factors that affects the operation of the cotton ginning process. A system has been developed that measures cotton’s dielectric constant and density with sufficient accuracy to indicate moisture content of the fiber during processing. An electronic capacitor and a pneumatic density sensor supply measurements to a microprocessor which combines them into a predicted moisture content. Tests showed that these predicted readings are more precise than conventional oven-moisture determinations and that they can be used for process control in the ranges from 6.5- to 12-percent moisture content.

scholarly journals Effect of Different Hydrothermal Treatments (Steam and Hot Compressed Water) on Physical Properties and Drying Behavior of Yellow-Poplar (Liriodendron tulipifera)

2019 ◽  
Vol 69 (1) ◽  
pp. 42-52
Author(s):  
Sohrab Rahimi ◽  
Kaushlendra Singh ◽  
David DeVallance
Keyword(s):  
Mechanical Properties ◽  
High Pressure ◽  
Moisture Content ◽  
Yellow Poplar ◽  
Pressure Steam ◽  
Percent Moisture ◽  
Drying Behavior ◽  
Hot Compressed Water ◽  
And Control ◽  
Control Samples

Abstract Nonchemical high-pressure steam treatments have been intensively researched and commercialized to produce chemical-free wood products with enhanced properties. However, the utilization of high-pressure steam involves vapor-phase reactions using high-temperature steam generated at the expense of high energy input. In this research, influences of reaction media (steam and hot-compressed water) and temperature (100°C and 140°C) during thermal treatment on physical properties and drying behavior of yellow-poplar (Liriodendron tulipifera) heartwood were compared. The length, width, and thickness of the samples were 22.53 mm, 17.18 mm, and 16.72 mm, respectively. After the treatment, the samples were dried under an isothermal temperature condition of 105°C. Data on moisture content and time of drying from drying experiments were fitted with unsteady-state molecular transport equations to calculate overall liquid diffusion coefficients. Dimensions, weight, and true volume of samples were measured for green, thermally treated, and dried samples and the values were used to calculate selected physical characteristics. Additionally, selected mechanical properties were evaluated for samples conditioned to 13 percent moisture content. Results showed that intensified hot-compressed water-treated and control samples had the highest and lowest saturated moisture contents (101% and 44%), respectively, immediately after treatments. Intensified steam-treated and control samples had the highest and lowest total porosity (95% and 82%), respectively. Furthermore, mild hot-compressed water-treated samples showed the greatest compression strength (47.8 MPa) at 13 percent moisture content. Except for steam treatment at 140°C, other treatments significantly decreased the diffusion coefficient. Collectively, samples treated with hot-compressed water at 100°C showed the most improved mechanical properties.

Measurement and Control of Moisture in Wheat

1970 ◽  
Vol 3 (11) ◽  
pp. T181-T187 ◽  
Author(s):  
M. Brain
Keyword(s):  
Control System ◽  
Moisture Content ◽  
Automatic Control ◽  
Automatic Control System ◽  
Microwave Technique ◽  
Line Measurement ◽  
On Line ◽  
And Control ◽  
Measurement And Control ◽  
Consequent Improvement

A microwave technique for the continuous on-line measurement of moisture content in wheat is described together with an automatic control system based on these measurements. The results from a prototype installation are given and the consequent improvement of flour parameters are discussed.

scholarly journals Functionality of Process Control in Moulded Goods Production

2019 ◽  
Vol 105 ◽  
pp. 01006 ◽  
Author(s):  
Olga Puhova ◽  
Vladimir Lebedev
Keyword(s):  
Process Control ◽  
Automatic Control ◽  
Water Content ◽  
Automatic Regulation ◽  
Automatic Process ◽  
Automatic Process Control ◽  
Custom Made ◽  
Mineral Components ◽  
And Control ◽  
Measurement And Control

The article presents the findings of the research in the field of automatic control of peat mass quality in hollow peat pot production. The strength of the finished product determines its integrity and crumblability which affect the loss during drying and transportation. Therefore, knowing the strength characteristics we can use them for quality control. Besides, not strength but heterogeneity in the distribution of pores, moisture, and density is responsible for crumbling. Automatic regulation of effective peat mass water content is one of the main stages determining the quality. At this stage automatic control of the flow, dispersion and water content of peat mass entering the pulper tank as well as measurement and control of the amount of additional elements introduced, such as mineral components, wood pulp, and water to form the required consistency, are provided for. The models of automatic process control are built and analyzed with the methods of differential equation theory, numerical integration, and stability theory. The model is implemented with the custom-made proprietary software. The model adequacy is determined empirically by comparing the data obtained on the model with the actual technological process.

scholarly journals INDIRECT MEASUREMENT AND CONTROL OF MOISTURE CONTENT DURING DEHYDRATION PERFORMED BY FRYING

1999 ◽  
Vol 17 (7-8) ◽  
pp. 1627-1637 ◽  
Author(s):  
G. Trystram ◽  
I.C. Tréléa ◽  
A.L. Raoult-Wack ◽  
A. Diaz ◽  
F. Courtois
Keyword(s):  
Moisture Content ◽  
Indirect Measurement ◽  
And Control ◽  
Measurement And Control

Communications in Process Control (Part 1)

1982 ◽  
Vol 15 (11) ◽  
pp. 427-432
Author(s):  
P. R. Matthews
Keyword(s):  
Process Control ◽  
Low Cost ◽  
Rapid Development ◽  
Transmission Efficiency ◽  
New Techniques ◽  
Communication Techniques ◽  
Arduous Task ◽  
And Control ◽  
Measurement And Control ◽  
Effective Transmission

The last decade has seen many new measurement and control techniques developed. This has been principally due to the development of low cost electronic circuits and, more recently, the microprocessor. As a result of this rapid development the instrument and process control engineer is faced with the arduous task of interfacing new and old equipment with differing transmission and communication requirements. The situation is further complicated by the numerous transmission and communication techniques that are available and the usual dogma of finding differing communication interfaces at either end of the connecting cable. This paper provides an insight to the array of transmission and communication techniques currently in use and looks at new techniques which are being developed. The application of the transmission and communication techniques to process control systems is a subject which is now under careful scrutiny as the establishment of an effective transmission and communication configuration can result in an appreciable cost advantage and increased transmission efficiency. A number of these configurations (networks) are discussed.

scholarly journals The role of measurement in the development of industrial automation

ACTA IMEKO ◽  
2014 ◽  
Vol 3 (1) ◽  
pp. 4
Author(s):  
S. S. Carlisle
Keyword(s):  
Quality Control ◽  
Process Control ◽  
Control Strategies ◽  
Manufacturing Processes ◽  
Industrial Automation ◽  
And Control ◽  
Measurement And Control ◽  
International Measurement

<p>This is a reissue of a paper which appeared in ACTA IMEKO 1967, Proceedings of the 4th International Measurement Congress, 1967, Warsaw, vol. 1, pp. 37-50.</p> <p>The paper sets a frame on the role of measurement and control as critical tools to support the automation of manufacturing processes. In this perspective three main requirements for measurement are discussed, i.e., to identify where automation can be most profitably used; to investigate individual process behaviors and hence to formulate process control strategies; and finally to perform quality control of products.</p>

scholarly journals Smart Farming for Lowland Strawberry (Fragaria x ananassa) Production

2021 ◽  
Vol 12 (3) ◽  
pp. 1797-1804
Author(s):  
Jayson J. Elenzano Et.al
Keyword(s):  
Soil Moisture ◽  
Moisture Content ◽  
Moisture Sensor ◽  
Smart Farming ◽  
Temperature And Humidity ◽  
The Status ◽  
Temperature Parameter ◽  
Arduino Microcontroller ◽  
And Control ◽  
Parameter Values

The developed system monitors the humidity levels, moisture content of the soil and surrounding temperature. Parameter values such as maximum and minimum temperature, maximum and minimum humidity values can be monitored accordingly by sending an sms to the system using arduino microcontroller, gsm module, moisture sensor and dht11 temperature/humidity sensor. This design maybe used for monitoring and controlling temperature and humidity value via sms. This system monitors and control the water content of the soil using a moisture sensor which runs under the control of a microcontroller, a dht 11 sensor to control and monitor the greenhouse humidity and proper temperature and a short messaging system (sms) to notify the caretaker/ owner on the moisture level content and temperature/humidity of the greenhouse. The system monitored and maintains the proper temperature, humidity and soil moisture content inside the greenhouse. The device has been successfully tested under simulated conditions and showed the ability of controlling temperature, humidity and soil moisture. The system notified the caretaker/farmer via short messaging system (sms) for the notification status (information) and triggering the water pump. The device showed the capability of sending sms holding the latest temperature and humidity information and also the status of the greenhouse.

scholarly journals A Periodic-Automatic Apparatus for the Determination of the Moisture Content of Tobacco / Eine periodisch-automatische Feuchtigkeitsmesseinrichtung für Tabak

1966 ◽  
Vol 3 (7) ◽  
Author(s):  
M. von Bethmann ◽  
W. Dettmer
Keyword(s):  
Moisture Content ◽  
Constant Pressure ◽  
Electric Resistance ◽  
Automatic Apparatus ◽  
Measuring Process ◽  
Measuring Point ◽  
Routine Measurement ◽  
And Control ◽  
Measurement And Control

AbstractHaving reviewed general conditions and various difficulties of routine measurement and control of tobacco humidity, the authors present a new periodic-automatical principle which they developed for the determination of the moisture content of tobacco. Tobacco specimens continuously taken from the conveyor by an automatic sampler are tested by the principle of conductibility with constant pressure and time values. A velocity of 5 to 9 measurements per minute can easily be achieved. The measuring process is controlled by electronic programming. The results are recorded as deviation from a desired value by a registering instrument giving preferably also an account of the time of sampling. The said value to be fixed at choice represents a given electric resistance which is adjusted to the desired humidity value, to the temperature at the measuring point and to the specific properties of the respective tobacco mixture. Supplementary appliances for the automatic indication of ranges, the direct registering of figures and the storage of results can be incorporated with the apparatus presented. It is also possible to take parallel measurements of temperature and to compensate for its influence on the measuring results.

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