Quick answer. Judge every rig in PCILE-0001 onwards on one test: can a student change the set point, inject a disturbance and open the loop? A rig that only holds its set point is an expensive plumbing demonstration. It needs a readable trend of the process variable against time, because a single-number display cannot show overshoot; a deliberate way to upset the process, which many rigs lack; and a controller that can go into manual with proportional, integral and derivative terms visible and settable as numbers. If you buy one rig from this listing, buy the one that meets all three conditions, not the one with the most pipework.
About thirty-five units, coded PCILE-0001 onwards. The core is a set of single-loop training systems - flow control, level control, pressure control, temperature control and position control - with a multi-process control trainer, an industrial process control rig, a trainer for controller tuning, a trainer for industrial controllers, a trainer for field bus applications, a test stand for control valves, a stirred tank test stand, a flow and level control demonstration unit, a test stand for level and pressure control, a pH value control trainer, and applied units for a boiler batching process and a heat exchanger. A few unit-operations items - gas flow classification, magnetic separation - also appear in the listing and sit closer to chemical engineering than to control.
Two notes on our catalogue. The listing is not sorted by code - two records appear ahead of the one numbered before them - and the pH record is written with a stray hyphen. Neither affects the equipment, but quote the code and the full product name together so the right rig is confirmed on the proforma invoice.
Here is the thing that separates a process control trainer from an expensive plumbing demonstration, and it is the question to ask of every rig on this page.
A rig that only holds its set point teaches nothing about control. The whole subject lives in what happens when something changes: a step in set point, a disturbance thrown at the process, a controller detuned on purpose. So a trainer is worth buying only if a student can do all three of the following, and the third is the one most often missing.
| The student must be able to | Which means the rig needs |
|---|---|
| Change the set point and watch the response | A readable trend of the process variable against time - on a chart, a screen or a logger. A digital display showing one number cannot show an overshoot, and overshoot is the lesson |
| Inject a disturbance on demand | A deliberate upset: a second valve to open, a load to switch in, cold feed to add. Ask explicitly how a disturbance is applied, because many rigs have no provision for one and the exercise then has no second half |
| Open the loop and change the controller | A controller that can be put in manual, and whose proportional, integral and derivative terms are visible and settable as numbers. A sealed auto-only controller cannot be used to teach tuning at all |
If you buy one rig from this listing, buy the one that satisfies those three conditions rather than the one with the most pipework.
Flow, level, pressure and temperature are offered as separate training systems for a good reason: they behave so differently that a student who has only tuned one has not learned control. Choose the set that exposes the range rather than two that behave alike.
| Loop | How it behaves | What it teaches | Practical length |
|---|---|---|---|
| Flow | Very fast, and noisy | Why derivative action is usually a bad idea on a noisy measurement, and why flow loops are tuned tight and simple | Short. Several runs fit in one session |
| Level | Integrating - the tank keeps filling while there is any imbalance | Why an integrating process offsets without reset action, and why level loops are often tuned loose on purpose | Moderate |
| Pressure | Fast in a gas volume, almost instant in a liquid | The effect of process gain, and what happens when the final element is oversized | Short |
| Temperature | Slow, with a long lag and significant dead time | Dead time, which is the property that makes a loop genuinely hard to control, and the limits of PID | Long. One or two runs is a full session |
The honest recommendation: a flow or pressure rig plus a temperature rig teaches more than any two fast loops, because the contrast between a loop with no dead time and a loop dominated by it is the single most important thing a control student can see. And it matters for timetabling - a temperature loop cannot be tuned three times in a two-hour practical.
A control valve test stand is the most practical item here for an instrumentation technician, because valves are what actually fail in a plant. It should let a student plot the installed characteristic, measure hysteresis and dead band, calibrate a positioner and see the difference between a linear and an equal-percentage trim.
Ask what valve or valves are supplied and with what trim; whether a positioner is fitted and whether it is pneumatic, electro-pneumatic or digital; how travel is measured; and - the question that catches people - what instrument air the stand needs. A pneumatic actuator or positioner requires clean, dry, oil-free air at a regulated pressure. On wet or oily air a positioner sticks and a valve hunts, and the student learns an entirely wrong lesson about control valves. Ask us for the air flow and quality requirement, and budget for a filter-regulator and, in a humid climate, a dryer. Compressed air provisioning for a workshop is covered in our mechatronics workshop range.
The field bus trainer and the industrial controllers trainer raise one question worth settling before purchase: which signalling does your syllabus examine, and which does local industry use? A four to twenty milliamp loop is still the commonest instrument signal in the plants your students will work in, and it is the one on which loop checking, two-wire powering and burnout behaviour are taught. Digital bus protocols are important and several incompatible ones are in service, so if a bus is to be taught, ask which protocol the trainer implements.
Ask also how the controller is realised - a panel-mounted single-loop industrial controller, a programmable logic controller, or software on a computer - because each teaches a different job. For a technician programme the panel controller is the right answer; for an automation programme the PLC is, and PLC trainers are listed separately in the mechatronics workshop range. If software is involved, ask the licence terms, the supported operating systems and whether the rig can be operated without the computer.
pH control deserves a warning, because it is the most instructive and the most frustrating rig here. pH is a logarithmic measurement, so the process gain changes by orders of magnitude across the range - near the neutral point a tiny addition of reagent swings the measurement hugely, and away from it almost nothing happens. That makes a pH loop the best demonstration of nonlinearity there is, and the worst possible choice for a student first exercise.
Practical points: the electrode is a consumable with a limited life, it must be stored wet and never dry, and it needs buffer solutions for calibration, so ask what buffers and storage solution are supplied and what a replacement electrode costs locally. Ask what reagents the exercise uses and whether they can be imported, and settle the drainage question, since the rig produces acidic and alkaline effluent that may need neutralising before discharge.
Settle before delivery: electrical supply and whether any unit is three phase, with earth-leakage protection on every outlet, because every rig here combines water and electricity; water supply and drain; instrument air with its quality requirement; and, for the boiler and batching unit, the statutory position - a steam generator or a pressure vessel is subject to registration and periodic inspection in many countries, and that has to be arranged before the equipment is commissioned rather than after. Ask for the relief device settings, where they discharge, and the vessel certificate and drawings with the quotation.
For each rig: the controlled variable and the manipulated variable; the sensor and transmitter fitted, with range and signal type; the final control element and its action; how a disturbance is applied; whether the controller can be put in manual and whether P, I and D are settable as numbers; how the response is displayed and whether data can be logged and exported; the dead time and time constant of the process, if known, since that is what determines how long an exercise takes; services required - power, water, drain, instrument air with quality; consumables with prices, which here means electrodes, buffers, reagents, seals and filter elements; the worksheets or experiment list supplied; mass, footprint and bench or floor mounting; nominal voltage, frequency and plug pattern; and the warranty, commissioning and local service position. For any certification stated here, contact us for the latest copies of the relevant certificates before you tender on it.
Related ranges: chemical reaction engineering for reactors and unit operations, heat transfer lab apparatus for the thermal side, refrigeration and air conditioning for refrigeration controls, hydraulics and fluid mechanics trainers for flow measurement fundamentals, and the mechatronics workshop range for PLC and pneumatic control. The full set is listed under engineering apparatus. For a quotation, tell us the destination country, which loops your syllabus examines, whether a bus protocol is required and the length of your practical slot.
Buy loops that behave differently, because that contrast is the syllabus. Flow is very fast and noisy, and teaches why derivative action suits it badly. Level is integrating, and shows why a loop offsets without reset action. Pressure is fast in a gas volume and almost instant in a liquid, and shows process gain and an oversized final element. Temperature is slow with long lag and dead time, which makes a loop genuinely hard to control. A flow or pressure rig plus a temperature rig teaches more than any two fast loops - but a temperature loop cannot be tuned three times in a two-hour practical.
Because control only shows itself when something changes. Holding a set point teaches nothing; the subject lives in the response to a set point step, a disturbance thrown at the process, or a controller detuned on purpose. Ask explicitly how a disturbance is applied on each rig - a second valve to open, a load to switch in, cold feed to add - since many rigs have no provision and the exercise then has no second half. Ask also how the response is displayed and whether data can be logged and exported, since a trend, not a number, shows overshoot.
Clean, dry, oil-free instrument air at a regulated pressure. On wet or oily air a positioner sticks and a valve hunts, and the student learns the wrong lesson about control valves. Ask for the air flow and quality requirement, and budget for a filter-regulator and, in a humid climate, a dryer. Then ask what valves and trims are supplied, whether the positioner is pneumatic, electro-pneumatic or digital, and how travel is measured. The stand should let a student plot the installed characteristic, measure hysteresis and dead band, calibrate a positioner and compare linear and equal-percentage trims.
Settle which your syllabus examines and which local industry uses. The four to twenty milliamp loop is still the commonest instrument signal in plants, and it is where loop checking, two-wire powering and burnout behaviour are taught. Digital bus protocols matter too, but several incompatible ones are in service, so ask which protocol the field bus trainer implements. Ask also how the controller is realised: a panel-mounted single-loop controller suits a technician programme, a PLC suits an automation programme, and software on a computer brings licence terms, operating system support and the question of running without the computer.
No. It is the most instructive rig here and the worst first exercise. pH is logarithmic, so process gain changes by orders of magnitude: near neutral a tiny addition of reagent swings the measurement hugely, and away from it almost nothing happens. That makes it the best demonstration of nonlinearity there is. Plan its running costs too: the electrode is a consumable that must be stored wet and calibrated with buffers, so ask what buffers and storage solution are supplied. Check the reagents can be imported, and plan for acidic and alkaline effluent that may need neutralising before discharge.
Its statutory position. A steam generator or pressure vessel is subject to registration and periodic inspection in many countries, and that must be arranged before commissioning rather than after. Ask for the relief device settings and where they discharge, and contact us for the latest copies of the relevant certificates and drawings for the vessel. The services matter for every rig: confirm whether any unit is three phase, fit earth-leakage protection on every outlet because each rig combines water and electricity, and plan the water supply, drain and instrument air before delivery.
Ray Export is a manufacturer and exporter of laboratory, scientific and educational equipment based at Plot No. 449, HSIIDC Industrial Area, Saha, Ambala, Haryana 133104, India. Enquiries: [email protected], +91-9817319615.
Written by Palak Mall, Senior Content Writer. Technically reviewed by Arvind Kumar, Lab Equipment Specialist, 12+ years in laboratory and testing instrumentation. Last updated: 17 October 2026.
Specifications for each rig - controlled and manipulated variables, sensor and transmitter range and signal, final control element, disturbance arrangement, controller type, data logging, services and instrument air quality - are confirmed in writing on the quotation. For certificates, standards or approvals, including any pressure vessel documentation, contact us for the latest copies of the relevant certificates. No price is quoted on this page. Listing note: the range is given only as about thirty-five units from PCILE-0001 onwards; the listing is not sorted by code; the pH record carries a stray hyphen; and the gas flow classification and magnetic separation items are unit-operations equipment rather than control trainers.
Specialized Description:
The unit is utilized as a prologue to the subject of control innovation. Temperature, stream rate and filling level control frameworks are utilized as cases to give clear and functional major data. The exploratory framework is controlled from the PC screen (excluded in extent of supply). The provided procedure control and delineation programs make it conceivable to complete the investigation and in addition record estimation reports and store estimated information. Vital process factors are demonstrated carefully on the unit itself. All parts of the unit are plainly mounted on a metal sheet. The capacity and process tanks are straightforward for better review of the procedure. The unit is composed as a test unit for tabletop utilize. It requires just an electrical power association for task.
Specialized Description:-Â
This benchtop mentor manages the collaboration amongst controller and controlled framework, the goal being for the shut control circle, involving the controller and the controlled framework, to show the coveted ideal reaction. The setting of controller parameters - a key down to earth viewpoint - can be polished securely and seriously utilizing reproduction programming. Ideas, for example, open and shut circle control, solidness, step reaction, unsettling influence and control reaction are plainly illustrated. The specific component of this coach is that no genuine frameworks are utilized; the controlled framework is mimicked on a PC by a recreation program created by Ray Export. This rule is in broad application in item advancement in industry and is known as Hardware in Loop(HIL). Allmajor sorts of controlled frameworks can be chosen in the program. The framework parameters can be set inside wide cutoff points so that-dissimilar to genuine controlled frameworks extremeparameter circumstances can be researched. The time reaction can be recorded and analysedusing the product. The controller and the PC are associated by an information securing card with AD and DA converters. The procedure controller that is utilized can be effectively arranged from the PC over an interface utilizing the product gave. Obviously organized instructional materialoutlines the basics and gives a well ordered guide through the activities.
Specialized Description Control valves are a basic piece of process and concoction designing. The association amongst controller and plant is acknowledged with control valves as actuators. Control valves are normally used to manage streams of gases or fluids. Ideal control circle configuration relies upon a sound information of control valve conduct and additionally a learning of the controlled frameworks reaction. This portable test stand permits to examine and think about control valves of various sorts. For this reason the valve is introduced in a shut water circuit with a weight pump and a supply tank. Stream rate and weight drop over the valve are estimated. The trigger flag is produced by potentiometers and demonstrated on a show. Electrically worked engine valves can be researched and additionally pneumatic control valves. An information obtaining framework can be utilized to record and assess attributes and step reactions on a PC.
Specialized Description:-
This instructional framework is utilized to analyze a basic temperature control unit. It comprises of obviously organized secluded trial boards which are suspended in a casing and associated with links. A binding iron furnished with a warm component is utilized as the temperature control framework. The temperature can be perused on a computerized show with an estimating transducer. The framework incorporates a computerized mechanical controller which can be designed consistently as P, PD, PI and PID controller. It is conceivable to likewise utilize it as a two-point controller. The controlled esteem can be demonstrated on a bar graph. An electronic power control finishes the framework. The understudy has the chance to get acquainted with the segments of a control circuit, to interconnect them and change their parameters. All parts are of a tough plan and thusly appropriate for understudy tests.
Specialized Description:-
Field transport innovation assumes a key part in advanced process computerization. The field transport grants systems administration of terminal gadgets, for example, controllers, sensors or actuators in the plant framework (field level) with the larger amount control room (control level). A system of this kind can be very broad; line lengths of as much as 1000 meters and more are conceivable. This benchtop coach is utilized to instruct the underlying nuts and bolts teps in field transport innovation in light of the case of Profibus DP. Different terminal gadgets (slaves) are enacted and perused by a PC with a Profibus DP interface (ace). The required equipment is generally pre-designed. Understudies can focus on the product programming of the field transport framework. The accompanying particular points can be secured: System configurator with DMF (Device Master File), transport topology, correspondence conventions, labels, OPC (OLE for Process Control) server, information and yield of process information, and substantially more. The unit incorporates an advanced procedure controller and additionally simple and computerized information and yield modules with a Profibus DP interface. Two potentiometers allow the reproduction of info signals for the controllers. A computerized voltmeter shows the yield signals. Advanced signs are produced by switches and shown by LEDs. The controlled variable, controlling variable and reference variable information are conveyed as standard signs at lab jacks, empowering the controllers to be consolidated into genuine procedures whenever. Obviously organized instructional material diagrams the essentials and gives a well ordered guide through the activities.
Specialized Description :-
This coach acquaints understudies with the task and capacity of a best in class modern process controller. The controller has unreservedly open information sources and yields. Characterized input levels and step signs can be created with a flag generator. A computerized voltmeter is utilized to quantify the info and yield signals. A basic first request slack is reenacted to permit the reaction and soundness of a shut control circle to be researched. All signs are available by means of lab jacks so a standard x/y plotter or line recorder can be utilized. It is likewise conceivable to control outer framework models with this controller. And also manual setup and parameter setting with keys, the controller can be designed (arrangement programming supplied)from a PC over an interface. Obviously organized instructional material sets out the essentials and gives a well ordered guide through the activities.
Specialized Description:-
This minimized showing/preparing unit offers each chance to take in the essentials of process control through experimentation on a stream control framework. The experimentation set-up is mounted in a strong lodging which obliges all the hardware. A channeling framework with two stream meters is provided with stream by a speed-controlled pump from the straightforward stockpiling tank. The variable-zone flowmeter offers the preferred standpoint that the stream can be watched straightforwardly at any time.The rate of flowismeasured by a turbine wheel stream transducer. The transducer yield flag is sent to the product controller. Theoutput motion from the controllerinfluences the setting of an electromagnetic relative valve. To explore the impact of unsettling influence factors, the pump speed can be changed by method for the product. The effective cutting edge programming is a necessary piece of the preparation framework, exemplifying the rule of equipment/programming joining (HSI). It empowers the investigations to be directed and assessed in an easy to use way. The product has organize ability. The connection between the unit and the PC is made through a USB port. The plainly organized instructional material sets out the mechanical essentials and gives a well ordered guide through the tests.
Specialized Description:-
This conservative showing/preparing unit offers each chance to take in the basics of process control through experimentation on a level control framework. The experimentation set-up is mounted in a strong lodging which additionally suits all the hardware. The straightforward procedure tank is encouraged from the capacity tank with the guide of a speed-controlled pump. The fluid level is estimated utilizing a weight transducer. The transducer yield flag is sent to the product controller. The controllers yield flag impacts the speed of the pump engine and hence conveyance stream rate. To explore the impact of aggravation factors, an electromagnetic corresponding valve in the tank outlet can be enacted by the product. The intense best in class programming is an essential piece of the preparation framework, exemplifying the rule of equipment/programming reconciliation (HSI). It empowers the investigations to be directed and assessed in an easy to understand way. The product has arrange capacity. The connection between the preparation framework and the PC is made by means of a USB port. The obviously organized instructional material sets out the innovative basics and gives a well ordered guide through the tests.
Specialized Description:-
This minimized showing/preparing unit offers each chance to take in the basics of process control through experimentation on a direct position control framework. The experimentation set-up is mounted on a strong lodging which suits all the gadgets. A straightforward defensive cover grants safe perception of the analyses. A carriage can be moved by a DC engine by means of a toothed belt. The straight situating is estimated by a turning encoder and conveyed as a voltage flag. The yield motion from the transducer is sent to the product controller. yield motion from the controller impacts the engine current. The engine is naturally closed down if the carriage achieves one of the two end positions. The intense best in class programming is an indispensable piece of the preparation framework, epitomizing the standard of equipment/programming joining (HSI). It empowers the examinations to be directed and assessed in an easy to use way. The product has arrange capacity. The connection between the preparation framework and the PC is made through a USB port. Obviously organized and extensive instructional material sets out the basics and gives a well ordered guide through the investigations.
Specialized Description:-
This smaller showing/preparing unit offers each chance to take in the basics of process control through experimentation on a weight control framework. The experimentation set-up is mounted on a strong lodging which obliges all the hardware. The procedure tank is accused of packed airby a stomach gas pump. The benefit of the dial-measure manometer is that the weight in the tank can be watched specifically whenever. The weight ismeasuredusing a weight sensor. The sensor yield flag is sent to the product controller. Theoutput motion from the controllerinfluences the speed of the stomach gas pump and thus the conveyance stream rate. An air customer is mimicked by method for a restrictor valve. A solenoid valve through which air can escape can be initiated by the product to examine the impact of aggravation factors. The intense cutting edge programming is a fundamental piece of the preparation framework, exemplifying the rule of equipment/programming combination (HSI). It empowers the tests to be directed and assessed in an easy to understand way. The product has arrange capacity. The connection between the unit and the PC is made by means of a USB port.
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