Optical system,diameter:35mm,7X,binocular,Optical cross film; nylon carrying case.
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Temperature and Humidity Data Logger
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Temperature and Humidity Meter
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The board is supplied complete with a set of stackable, plug-in cables of suitable lengths and colours and with a training manual. This board includes a small oven with a heating element and three temperature sensors (thermocouple, thermistor, and thermo-resistance) with relevant interface circuits. Complete with error amplifier that can be configured for on-off or proportional control, and with a piloting circuit of the power stage with triac.
Power supply: 24Vac, 1A, 50/60Hz and 15Vdc, 100mA
Experiments:
Analysis of the operation of a proportional control
Analysis of the operation of an on-off control
V = f (t°) characteristics of a thermocouple, with relevant linearization, of the thermistor and of the thermo - resistance.
Industrial type components are educationallyadapted by using a modular panel system to permit the step by step assemblingfrom the simplest circuit to the most complex system. This laboratory is designed for the study of the temperaturecontrol application to allow the student a practical training, based on theperformance of guided experiments.
With this laboratory it is possible to perform the followingexperiments:
The two position controller with delayed feedback in thetemperature process
The two position controller with elastic feedback in thetemperature process
The two position controller in the temperature process
P, PI and PID controls of the temperature process using theCHR method
The three range controller in the temperature process.
Temperature Control And Regulation Study Unit makes it possible to analyse the behavior of a control loop where the controlled quantity is the temperature of aliquid in a tank. Students may test out the use of different types of regulators, as are currently employed in industrial applications, and thetests can be performed in highly realistic conditions, as the system is entirely made of industrial quality components. Temperature control is one of the main problems encountered in factory automation and process control. It is also extremely interesting for teaching purposes, because temperature varies very slowly over time and therefore makesit possible to apply different control techniques and to assess the effects of the control parameters involved. It is suitable to an interdisciplinary laboratory, because it includes mechanical, chemical, electronic and EDP contents. With this trainer, all the tests can be performed through a Personal Computer and a special software for Windows.
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The unit provides students with the opportunity of investigating the effects of a change of controller parameters (proportional band, integral and derivative times) on the control capability of the system. The Temperature Control Apparatus illustrates the control of temperature in a simulated reactor vessel by controlling the supply of coolant (air) in response to changes in process conditions. The unit is made up of typical items of control equipment currently used in industrial applications, thereby providing an excellent opportunity for familiarisation.
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Primary circuit with electrically heated tank, pump control valve, rotameter
Secondary circuit with fresh water connection, temperature transducer, rotameter
Experimental unit for control engineering experiments
Control valve: electromagnetic proportional valve
Digital industrial controller, freely parameterisable
Large process schematic on front panel
Temperature control with plate heat exchanger and 2 water circuits
Process variables X and Y accessible as analogue signals via lab jacks
Ball valve to generate disturbance variables in fresh water circuit
Plate heat exchanger, 30 plates.
A halogen lamp represents the heating element; a fan and a shutter valve allow, a PTC sensor provides the feedback signal; besides the reaching of a uniform temperature within given safety limits, also the insertion of noise variable. Temperature Control System represents a process for the control of the temperature, suitable for analysing continuous and discontinuous closed loop control systems.
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Trainer for control engineering experiments
Temperature measurement with thermocouples at multiple points
Generation of disturbance variables by ball valve with scale in water circuitv
Screw-in heater with dry-running protection and temperature limiter Air/water heat exchanger with fan
Process variables X and Y accessible as analogue signals via lab jacks
Thyristor power controller as actuator
Digital controller, configurable as switching or continuous controller
2-channel line recorder
Temperature control process, equipped with standard industrial components
Water circuit with pump, heater and 2 different lengths of process delay.
The temperature of the condensing water vapour in the hypsometer can be determined accurately using the software or tables in the manual, providing knowledge of the barometric pressure is known. The water level is simply raised to change the hypsometer into a variable temperature water bath.
A bench top unit designed to introduce students to temperature, temperature scales and commonly available devices to measure temperature.
Temperature sensors with different thermometric principles and characteristics are supplied. An accurate platinum resistance thermometer with five point calibration certificate and temperature indicated directly in deg C, is included for reference.
The equipment comprises a hypsometer/hot water bath and ice flask to generate accurate fixed points (the condensation point and triple point of water) and variable temperatures.
The measurement of temperature is fundamental to almost every branch of engineering and science. Up to nine different methods of Temperature Measurement Methods and Calibration Unit are included and students undertake detailed experiments to compare not only accuracy but also the way in which the instruments work. The Temperature Measurement Methods and Calibration Unit enables students to investigate the many different methods of measuring temperature and to determine the advantages and disadvantages of the various sensor and indicator types. The operation of platinum resistance temperature sensors and their importance in the International Temperature Scale are investigated.
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Digital display of the temperatures measured using sensors
Flow rate measurement with rotameter
4 different measuring sections, can be selected individually with ball valves
Water connections made using quick-release couplings
Investigation of 4 different temperature measuring techniques in the range from 0...60°C.
An electrical heating element is fitted into the block, the electrical supply provided from a variable transformer with front panel control so that the rate of heating and final temperature can be controlled as desired. Temperature Measuring Bench is designed to demonstrate a number of commonly used methods of temperature measurement, and provides the means for calibration and accuracy comparisons of the different methods. Hence, suitable measuring devices can be found for particular applications. The main unit comprises a bench mounting console which contains the hot water bath, furnace, ice bath, a digital resistance thermometer/thermocouple instrument, digital NiCr/NiA1 thermocouple instrument and power supplies. The hot water bath comprises a Dewer flask whose lid is fitted with a combined heater stirrer unit, low water cut out to provide boiling water reference at 760 mm Hg barometric pressure. Features are provided so that a number of faults commonly occurring in thermocouple systems can be demonstrated. In addition the unit may be used to provide a temperature measuring facility for use with other experiments. The furnace comprises a brass block with holes drilled to accept a glass thermometer, resistance thermometer and thermo-couple. An over temperature thermostat is set to limit the maximum temperature to 250ºC. The heater unit incorporates an adjustable thermostatic temperature control and over-temperature cut-out.
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The unit consists of three type of sensors with four indicators, and five different other temperature measuring devices. Temperature Measuring Bench top unit is used for studying temperature measurement of several commonly used devices as well as understanding related principles. Heat sources and means for calibration and accuracy comparison of the different devices is also provided.
Experiments:
Understanding lead and conduction errors.
Dynamic response.
Understanding the physical principles of each device.
Understanding calibration techniques.
Air humidity.
Errors associated with incorrect applications.
The Temperature Process Control Learning System includes a heavy-duty, welded steel workstation with industrial quality components, which are mounted and plumbed in two water flow circuits, a process loop and heating loop, to control the temperature of water flowing in the process loop. Temperature Process Control Learning System allows learners to study and practice calibrating, adjusting, installing, operating, and tuning thermal process control systems in industrial applications. All electrical components are connected to the control panel to allow students to measure signals and connect the devices in a wide variety of control configurations including PID control, on/ off control, and manual control. Process control systems provide precise control of liquids and gases in a wide variety of industrial applications including food processing, chemical manufacturing, and bio-technology.
Features:
Refrigeration-Based Cooling
3 Types of Temperature Sensors
Industrial Quality
Student Reference Guide
PLC Compatible
Extensive Instrumentation.
The Temperature Process Training System is a compact and mobile unit for a wide range of experiments in temperature control. It gives students a greater understanding of the stability of simple control systems. The self-contained unit can do many experiments, but it can also connect to the optional Computer Control System for distributed control.
The main parts are:
Industrial controller with auto tune feature
Temperature transmitter
Thermocouples
In-line heater
Three-speed pump
Two-channel chart recorder
Heat-exchanger and fan
Reservoir
Delay coil.
A special software program operating in MS-Windows environment enable to perform the execution of tests through a Personal Computer. The Temperature Transducers Study Module allows the calibration of instruments connected to temperature transducers, such asthermo couples and thermo resistances, and it demonstrates experimentally the concept of measure uncertainty. The unit includes all the measuring instruments necessary for the execution of the tests and numerous measuring points to check the most important signals with the aid of external instruments.
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Tensile Modulus Of Elasticity is to be used with Universal Structural Frame. The rod is mounted between two gripping heads and a load of upto 3 kN is applied by means of a screw with turning wheel. Elongation of the gauge length is measured by two dial indicators. Tensile Modulus Of Elasticity equipment is used for studying the modulus of elasticity of materials in the form of rods. The load is measured by a force indicator.
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