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Disturbance variables generated by electromagnetic proportional valve in tank outlet
Tank with overflow and graduated scale
Experimental unit for control engineering experiments
Level measurement by pressure sensor
Process schematic on front panel
Level control process with transparent tank
Speed-controlled pump.
Hydrostatic Pressure Water Level Sensor
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Water Level Automatic Control Model
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This Trainer includes see-through operating vessels and selected piping. One vessel has discrete level control, the other analog. The Tank Level Flow Trainer with PLC is a combination of working vessels and pumps, with interconnecting piping that is controlled by a Programmable Logic Controller (PLC).
Function of Tank Level Flow Trainer with PLC
Tank Level Flow Trainer with PLC process trainer pumps water from a storage tank into the first working tank which is fitted with level switches. The second tank has an inner air tank which can be selected to change the response characteristics of the process. Note that with this trainer are a number of student modules for instrumentation training in addition to operator training modules. Two parallel pumps, controlled by the PLC, transfer fluid from the first tank to the second where level is measured by analog instruments. Return flow from the second tank to the storage tank is by gravity and the discharge valve is controlled by the PLC.
The workstation is constructed of heavy-duty, welded steel. Industrial quality components are mounted and plumbed in a closed loop circuit to control the water flow between two tanks or the liquid level in one tank. The Level And Flow Process Control Learning System teaches two of the most common types of process control systems, flow and liquid level, and the basic concepts on which other systems are based. All components are connected to banana jacks on the control panel to allow students to measure signals and connect the devices in a wide variety of control configurations. Students will learn to calibrate, adjust, install, operate, and connect process control systems in industrial applications. The process control simulator includes a bench-top workstation, process control network, control panel, student learning materials for both theory and lab, and teachers guide.
This allows students to study a wide range of process control methods. The relay control includes manual input switches, control relays, solenoid valves, and float switches to perform automatic on/off liquid level control. Level And Flow Process Control Learning System offers 3 types of controllers: relay control, the standard, and two options: PID controller and PLC control. Manual valves are used to switch between the PID and on/off control methods. The PID controller option enables variable electronic control of either liquid level or flow and the PLC controller option enables both on/off and PID control of the system.
Features:
Interchangeable Components
Built-In Instrumentation
Industrial Standard Components
Student Reference Guide
Heavy Duty Welded Steel Workstation
Industrial Safety Devices
3 Types of Controller Options
PLC Interface
Multimedia Curriculum Available.
The Level Process Training System is a compact and mobile unit for a wide range of experiments in flow 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 other products in the range for extra experiments. For cascade control of flow and level, it can link to the optional Flow Process Training System. For distributed control, it can connect to the optional Computer Control System
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The water level indicator consists of a flat, two cores, heavy duty cable calibrated in metres and centimetres on one side.
Water level depth indicator, battery powered (3 x 1.5 V, included and easily replaceable), for use in boreholes to a maximum depth of 200 metres.
A stainless-steel probe is securely fastened to the free end of the cable and the cable with probe is attached to a cable winding reel. Measurements are taken by slowly lowering the cable with probe down the borehole until the probe comes in contact with the water. On contact with the water, the unit emits a high frequency audible signal, and the user can then take a depth reading from the calibrated cable.
The unit is also equipped with an optical (light) signal that switches on upon contact of the probe with water.
The water level indicator consists of a flat, two cores, heavy duty cable calibrated in metres and centimetres on one side.
A stainless-steel probe is securely fastened to the free end of the cable and the cable with probe is attached to a cable winding reel. Measurements are taken by slowly lowering the cable with probe down the borehole until the probe comes in contact with the water.
Water level depth indicator, battery powered (3 x 1.5 V, included and easily replaceable), for use in boreholes to a maximum depth of 150 metres.
The unit is also equipped with an optical (light) signal that switches on upon contact of the probe with water. On contact with the water, the unit emits a high frequency audible signal, and the user can then take a depth reading from the calibrated cable.
Water level depth indicator, battery powered (3 x 1.5 V, included and easily replaceable), for use in boreholes to a maximum depth of 100 metres.
A stainless-steel probe is securely fastened to the free end of the cable and the cable with probe is attached to a cable winding reel. Measurements are taken by slowly lowering the cable with probe down the borehole until the probe comes in contact with the water.
The water level indicator consists of a flat, two cores, heavy duty cable calibrated in metres and centimetres on one side.
The unit is also equipped with an optical (light) signal that switches on upon contact of the probe with water. On contact with the water, the unit emits a high frequency audible signal, and the user can then take a depth reading from the calibrated cable.
This trainer has amodular structure and it consists of panels installed on a verticalframe. It is supplied with a theoretical and practical manual. Industrial type components are educationally adapted by using a modular panel system to permit the step by step assembling from the simplest circuit to the most complex system. This laboratory is designed for the study of the Level Control Application to allow the student a practical training, based on theperformance of guided experiments. The modularity of this system can give the students a direct and immediate approach to the topics, offering the opportunity to study various subjects, performing several experiments as following:
Pumps features:
Measurement systems features
Level control with adjuster P
Level control with adjuster PI
Level process features
Level control with adjuster PID
Level control with a 2 position controller.
Water level depth indicator, battery powered (3 x 1.5 V, included and easily replaceable), for use in boreholes to a maximum depth of 50 metres.
A stainless-steel probe is securely fastened to the free end of the cable and the cable with probe is attached to a cable winding reel.
The water level indicator consists of a flat, two cores, heavy duty cable calibrated in metres and centimetres on one side.
On contact with the water, the unit emits a high frequency audible signal, and the user can then take a depth reading from the calibrated cable. The unit is also equipped with an optical (light) signal that switches on upon contact of the probe with water.
Measurements are taken by slowly lowering the cable with probe down the borehole until the probe comes in contact with the water.
Automatic Water Level Control Model
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This Level Control System is designed to allow numerous level control experiments to be performed within a typical laboratory session. This invention relates to an improved type of electronic liquid level control apparatus, yand more particularly toa relatively. A simple electronic type 'of controller which may be utilized to maintain substantially accurate liquid levels, within small liquid receiving chambers. A for use with very small liquid receiving chambers, such as -may be used 'in laboratory apparatus or pilot plants, or they are not adapted for use with extremely high pressure'equipment because of yinadequate packing glands or sealing means. Still other types of liquid level 'controllers are adapted to operate overa relatively wide range of level variations and are not sensitive to small changes ,in liquid' level. The unit enables students to investigate the effects of changing the parameters of the control algorithm and changes can be made to the process conditions by adjustment of the ow into the vessel. Many of the present-forms of liquid level ycontrollers are of a type which are not suitable.
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Level Control AND Regulation Study Unit makes it possible to analyse the behavior of a control loop where the controlled quantity is the water level in a tank. The unit can be had in two versions, where the control element consists of a pneumatic valve or a motorised electricvalve. Students can examine the effects of the different control parameters on the performance of the control chain and the stability of the system; furthermore, they can become familiar with the components commonly adopted in modern industrial applications, as the system is entirely made of industrial quality components. The behavior of the controlled quantity can be followed visually so that the students can grasp the basic concepts of control and regulation techniques in an intuitive manner.
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Helmet, ballistic resistant, protection level NIJ IIIA, medium size (M).
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Helmet, ballistic resistant, protection level NIJ IIIA, X-large size (XL).
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Provides basic protection from minor splashes and spill
Fabric: Non-woven
Latex free
Lightweight and breathable.
Elastic cuff
Spunbonded polypropylene.
Leveler Water Balance
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