The Rectifier Unit has a built-in voltmeter with a switch for measuring AC input and DC output. The electric connections to the individual power supply are made through 4 mm standard colour-coded safety sockets. The Three Phase Rectifier Unit can be used to power various units requiring variable or fixed DC voltage. This unit is powered by the Three Phase AC Power Supply. Requires a 120/208V 60Hz circuit. Specifications and/or diagrams are silk screened on the back of the front panel to avoid wear and for ease identification.
Educational Advantages:
Can be used to teach the principle of variable autotransformer and three phase rectifier
Can be used to power various units requiring variable or fixed AC or DC voltages
Compatible with all 3hp units
The apparatus consists of a through pipe conveying water from a cold water supply to a suitable drain with a loop of pipework connected between the supply and drain connections. The heater can be switched on or off to generate step changes when investigating the transient responses of the recycle loop. This recycle loop incorporates a circulating pump and a heater to raise the temperature of the water in the loop.
A bench top unit designed to introduce students to the characteristics of a recycle loop and the typical responses under steady state and unsteady state conditions.
The arrangement also permits different lengths of flexible tubing to be connected in series with the loop if it is required to create further changes in residence time. A pair of self-sealing fittings enables a short length of pipe or a reservoir to be connected in series with the recyle loop to change the volume of the loop and demonstrate the effect of residence time.
Programs are designed to give practical troubleshooting experience with domestic and foreign car manufacturer's engines. With the Variable Fault Feature, the instructor can use the switches to demonstrate the loss of circuits while the engine is running. Today's engines have sophisticated microprocessor based algorithms that control engine performance. Because of these technological changes, the automotive technician must understand each subsystem's unique role in operation as well as it interdependence with other components.
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Red Liquid Thermometer
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Reduced voltage starting is ideal for applications where full motor torque could tear or damage a product, such as paper or delicate fabric. Learners will study Wye-Delta power distribution, types of voltage circuits, and the operation of an autotransformer reduced voltage starter. Reduced Voltage Starting Learning System adds to the Electric Motor Control Learning System to teach methods of starting electric motors under reduced voltage, 3-phase power distribution using Delta and Wye transformer wiring configurations, and troubleshooting.
This system uses industrial quality components that stand up to frequent use and enables learners to practice with real-world components that they will encounter on the job. The Reduced Voltage Starting Learning System includes a Dual Transformer Station, featuring two control transformers, and a Power Resistor Station, featuring three 25 ohm, 100 watt resistors.
Features:
Heavy-duty components
Multimedia Curriculum Available
Teaches methods of starting electric motors under reduced voltage and 3-phase power distribution
Hands-on skills.
Load is applied to the truss by a screw jack mechanism with integral load cell. An extra diagonal member with its length adjustable by a simple mechanism is provided to make the first bay of the Redundant Truss. Each Redundant Truss member incorporates a strain gauge bridge arrangement for direct measurement of strain. The 45° two bay truss consists of seven members with pinned joints cantilevered from the vertical member of the Universal Frame and Stand using an upper springing and supported by a roller bearing on a vertical track at the lower springing.
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Experiments:
Study Of Strains, Stresses, Forces And Deflections In:
A Statically Indeterminate Structure
A Statically Determinate Structure
Operating Conditions
Operating Environment: Laboratory
Operating Relative Humidity Range:
80% At Temperatures < 31c Decreasing Linearly To 50% At 40c
Storage Temperature Range: 25c To +55c (When Packed For Transport)
Operating Temperature Range: +5c To +40c.
Designed for single phase operation the demonstration case is divided into two main boards:-
Control board with programmable controller and normal Run/Fault switches and indicator lamps.
Mimic Diagram with Cooling and Heating sections and room temperature and humidity potentiometers.
Encapsulated Level A garment design for highest level of protection from liquid splash and vapor/gas exposures for both wearer and respiratory equipment
Triple taped seams provide strong chemical resistance against heavy liquid splashes
Front entry design allows wearer to partially don garment (maintain standby position) without assistance
Sewn seam is covered, both inside and outside of garment with compatible chemical-resistant material by heat-sealing
Standard width, four layer face shield
Expanded back to accommodate self-contained air breathing apparatus (SCBA)
Vapor tight zipper is extra-long to increase garment opening and aid donning and doffing
Reflector garments are composed of a patented, heavy-duty aluminized fabric made of a blend laminated to a multi-layer barrier film. This unique combination of layers provides excellent physical strength and cut and abrasion protection. Ideal for industrial chemical, HazMat response and military applications including chemical warfare agents.
Storm flap covers zipper which can be secured by wearer with rugged hook and loop material to prevent intrusion at zipper
Double storm flap with hoop and loop closure
Three component glove system: inner North Silver Shield / 4H glove provides broad range chemical protection, middle Neoprene gloves provide mechanical and physical durability to protect inner Silver Shield glove and outer knit glove made for abrasion and cut resistance
One-way valves are positive pressure and open on demand
Valves include splash covers made of barrier material to help prevent liquid intrusion
Valves are located on left back of head and right lower back
Integrated socks composed of garment material
Attached flaps are designed to cover boot tops to help reduce potential for liquid intrusion
Two exhaust valves release higher pressure inside encapsulating garments while simultaneously helping to prevent inward leakage of external vapors or particles into the garment
Each suit has unique serial number and is fully tested at time of manufacture including positive air pressure integrity testing
Internal adjustable waist belt system for support and improved fit.
Features:
Portable and easy to carry
Built in safety valve manifold compound and pressure gauges
Vacuum gauge hose ccl-36 (90cm) with safety goggles and oil for vacuum pump
Compressor power: 280W
Rotary vane type with two stage vacuum pump
With a digital scale (up to 100 Kg with a 0.5% accuracy)
Vacuum pump pumping speed: 60L/min
Filling speed: 800g/min
Recovery rate: 150g/min
Working tank volume: 12L
External hose: 2.0M
Refrigerant electronic weighing range: 60Kg
Refrigerant electronic weighing accuracy: + 10g
Temperature: 0 -40 degree, relative humidity: 85%
External magnetic field strength: 400mA/m
Power supply: AC220 + 10% frequency: 50/60HZ
Package size: 620X680X1160mm
Machine weight: 90 kg.
Manometer for intake and high pressure with temperature scale for refrigerant R134a
High pressure and intake pressure connections
4-valve assembly aid
Pulsation-damped manometer for intake pressure, high pressure; vacuum meter
Portable Equipment
Vacuum pump and filling balance
The Refrigerating Room is an extremely easy-to use and functional unit able to permit the study of the characteristics of a refrigeratingroom to store supplies at low temperature. The unit is supplied with a manual which describes the components, the installation and utilization procedures as well asmany exercises with experimental results. Front panel with mimic diagram and instrumentation allows to keep the most significant thermodynamic quantities undercontrol, so facilitating the students understanding and the teachers task.
Technical Features:
Compressor power: 150 W
High temperature thermostat: -5 · +25°C
Low temperature thermostat: -7 · -35°C
Refrigerating room capacity: 30 l
Anodized aluminum structure and panels in painted steel.
Diagram in the front panel with similar distribution to the elements in the real unit
Main metallic elements in stainless steel.
Unit to perform experiments with a SCADA SOFTWARE.
System control via solenoid valves.
The unit includes wheels to facilitate its mobility.
Base unit of the unit that allows the development basic experiments on the operation of the refrigeration and air conditioning systems in conjunction with different models.
Function educational.
Models attached securely with fasteners.
Condenser unit with: Compressor, Condenser, Receiver of refrigerant.
Data acquisition.
Automation of the air operation system.
Bench-top unit.
Diagram in the front panel with similar distribution to the elements in the real unit.
Cooling compressor, computer controlled.
Anodized aluminium structure and panels in painted steel (epoxy paint). Main metallic elements in stainless steel.
Air evaporator, computer controlled. Water evaporator.
High pressure control.
Coolant accumulation tank. Cooling filter. Tank of division of the cooling liquid.
Expansion valve.
Water condenser.
2 Pressure sensors: Cooling pressure sensor (compressor outlet). Cooling pressure sensor (compressor inlet).
4 Manometers.
3 Flow sensors: Cooling flow sensor. Water flow sensor (water condenser). Water flow sensor (water evaporator).
Wattmeter.
Bench-top unit.
Diagram in the front panel with similar distribution to the elements in the real unit.
Cooling compressor, computer controlled.
Anodized aluminium structure and panels in painted steel. Main metallic elements in stainless steel.
Coolant accumulation tank. Cooling filter.
Expansion valve.
Water evaporator.
Air condenser, computer controlled.
High pressure control.
Tank of division of the cooling liquid.
4 Manometers.
2 Flow sensors (cooling flow sensor and water flow sensor).
2 Pressure sensors: Cooling pressure sensor (compressor outlet). Cooling pressure sensor (compressor inlet).
8 Temperature sensors (4 sensors for the cooling temperature, 2 sensors for water temperature, 2 sensors for the air temperature)
Enthalpy diagram of the refrigerant R134a.
Wattmeter.
Bench-top unit. Anodized aluminium structure and panels in painted steel (epoxy paint). Main metallic elements in stainless steel.
Air condenser, computer controlled.
High pressure control.
Coolant accumulation tank. Cooling filter. Tank of division of the cooling liquid.
Diagram in the front panel with similar distribution to the elements in the real unit.
Cooling compressor, computer controlled.
Expansion valve.
Air evaporator, computer controlled.
Water evaporator.
4 Manometers.
2 Flow sensors: Cooling flow sensor. Water flow sensor (water evaporator).
9 Temperature sensors (4 sensors measure the cooling temperature, 2 sensors measure the water temperature, 3 sensors measure the air temperature
2 Pressure sensors: Cooling pressure sensor (compressor outlet). Cooling pressure sensor (compressor inlet).
Enthalpy diagram of the refrigerant R134a.
Wattmeter.
Bench-top unit.
Anodized aluminium structure and panels in painted steel. Main metallic elements in stainless steel.
High pressure control.
Coolant accumulation tank. Cooling filter. Tank of division of the cooling liquid.
Expansion valve.
Cooling compressor, computer controlled.
Water condenser.
Water evaporator.
4 Manometers.
2 Pressure sensors: Cooling pressure sensor (compressor outlet). Cooling pressure sensor (compressor inlet).
7 Temperature sensors:
3 Flow sensors: Cooling flow sensor. Water flow sensor (water condenser). Water flow sensor (water evaporator).
Enthalpy diagram of the refrigerant R134a.
Wattmeter.
The Refrigeration And Conditioning has been designed for both theoretical and practical learning of refrigeration technics. The unit has been designed for operation with CFC free Freon as primary and unfreezable mixture as secondaryrefrigerant. On the front panel, a synoptic diagram reproduces the plant clearly showing each component and the measurement pointsprovided in the circuit. The Refrigeration And Conditioning unit is self-sufficient and provided with all the instruments which are necessary to allow a wide experimentation.
The Refrigeration And Conditioning unit is available in two versions:
Refrigeration Study Unit with Heat Pump.
Refrigeration Study Unit.
The model is plugged onto the base unit, secured using fasteners and connected with refrigerant hoses to become a complete refrigeration circuit. In refrigeration and freezing combinations evaporators are preferably connected in parallel. This is part of the training system for refrigeration and air conditioning technology. To increase the refrigeration capacity, evaporators are operated connected in series. Here different pressure levels in the evaporators can be used to obtain different temperature ranges for refrigeration or freezing. In combination with the base unit the operational model of a refrigeration system with refrigeration and freezing stage results.
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This climate depends on different influences, such as the surface temperature of the evaporators, cold storage room temperature, degree of evaporator icing, quantity and type of refrigerated goods etc. Icing of the evaporators significantly reduces the refrigeration capacity and must therefore be prevented as much as possible by periodic defrosting, i.e. heating the evaporator surfaces. The climate in the cold storage room has a significant effect on the quality of the products stored there. The icing of the evaporators depends on the evaporator and room temperatures and the quantity of humidity introduced by the refrigerated goods. The evaporator surface can be heated from the outside by electric heating or from the inside by hot gas directly from the refrigerant compressor. In addition to the periodic defrosting at set times, there is defrosting performed as required by measuring the actual ice coating.
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