Digital controller, parameterisable as a P, PI or PID controller
2 pH value sensors in transparent measuring tanks with overflow
Product tank and 2 chemicals tanks
Trainer for control engineering experiments
pH value control process, equipped with standard industrial components
Water connection with control valve and rotameter
Corrosion-resistant piping system
Hand-held pH-meter for product control
Neutralisation of a caustic solution with an acid
2 metering pumps: adjustable manually or via controller
Process variables X and Y accessible as analogue signals via lab jacks
2-channel line recorder.
Disposable sterile umbilical cord clamp, safe, effective and easy to apply.
Material: Plastic (polymer).
Grooves all along the length to prevent slip of the umbilical cord and to retain it in the same position.
Finger grip to ensure safe and easy handling.
Safe security lock, with a click to indicate correct locking, to protect against accidental re-opening after clamping.
Sterile.
Single-use.
-lab-80258948.jpg "Electric Spark Timer (Multi Frequency)")
The product is composed of a host machine, hammer, edge clamp, recording tape, toner paper plate etc. Products using the power supply voltage: AC220V±22V, frequency: 50Hz±0.5Hz; product can output 20Hz, 50Hz, 100Hz high voltage pulse EDM, discharge time, the corresponding interval is 0.05s, 0.02s, 0.01s, the size of the output of the electric spark track adjustable. Quality: 50 RBI RBI continuous leak point, clear ideas, the diameter is not greater than 0.8mm. The main engine size is not less than 150 * 60 * 55mm, the size of the control point trace, the output frequency selector switch, the power switch and the indicator light are all on the main board, and can be adjusted according to the experiment.
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This instrument is composed of a double convex lens, a double concave lens, a prism,3 rods and 3 bases.
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It is used in electron cloud concept teaching of high, middle school chemistry and physics microstructure.
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Made from and coated with polyethylene
Tightly sewn seam is covered with garment fabric to reinforce seam and reduce potential for particle penetration
Elastic opening for tighter fit at wrist
Sleeved Aprons offer added chemical protection from numerous light splash situations for a variety of industries.
Provides enhanced frontal protection
30 minutes of protection in 42 chemical situations
Elastic wrists
Waist ties
Open back for wearer comfort
Neck loops with snaps
Bound seams
Yellow
10 mil thickness
Applications:
Light splash protection in petroleum refining, pulp and paper manufacturing, food processing, chemical processing and pharmaceutical manufacturing.
Radial compressors are used to compress gases. The experimental unit provides the basic experiments to get to know the operating behaviour and the important characteristic variables of radial compressors. A protective plate placed in front of the inlet of the intake pipe prevents larger objects from being sucked in or the clogging of the intake opening. The medium is sucked in axially to the drive shaft by the rotation of the impeller and flows through the impeller rotating at high speed. By means of centrifugal force, the medium is accelerated towards the outer edge and is compressed in this manner. The air flow is adjusted by a throttle valve at the end of the delivery pipe. The microprocessor-based measuring technique is well protected in the housing. The experimental unit is fitted with sensors for pressure, temperature and speed. The flow rate is determinated via differential pressure measurement on the intake nozzle.
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The engine has one working cylinder and a transfer cylinder arranged side by side in open communication one with another but without any intervening valve mechanism. The power cylinder has a single acting piston connected to the crankshaft while the transfer cylinder has a double acting displacer piston and regenerator operated by an eccentric, the phasing of which can be altered in relation to the crankpin of the power cylinder. The cycle on which the engine is based consists of two isothermal processes and two constant volume processes (the latter being performed with the aid of a regenerator). The source of heat is provided from a low voltage electric element so that it may readily be controlled and measured. Output is measured by the simple dynamometer supplied. The optimum phase angle can be determined and rotation can be reversed. The heating element is located at one end of the transfer cylinder, which is made of pyrex glass, so that the element and the transfer piston can be clearly seen. A variety of experiments can be carried out and the effect on performance of the use of gases of different specific heat ratio can be established. By means of the transparent cylinder the temperature of the element may be seen to fall as heat is extracted from it when the engine starts from rest. Relatively little information exists concerning the detail design of small hot air engines and this engine was designed from first principles with the aid of a computer to determine the optimum proportions of the various working elements.
Applications:
Use of gases of different specific heat ratio
Study of Hot air engine
Effect on performance
Cyclic compression and expansion of air
Closed-cycle
Regenerative heat exchanger
Temperature differential.
The ceramic layer with sensor element (film resistance) canbe seen in the cut- away plastic housing.
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Transparent Six File Gearbox And Handbrake Assembly model is designed for demonstration and operation of inner structure of truck six speed gearboxes and handbrake in high and vocational schools.
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Power supply: 230 V 1ph 50 Hz 3 Hp
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Features:
Column, Arm, Work Head And Gears are made out of Closed Grain.
All moving parts Finished to close Tolerance
Spindle Ram is made out of Alloy Steel.
Parts Properly Balanced
Parts Finished on imported Grinding Machine
Prior Assembling of Main Gear And Pully.
The board is supplied complete with a set of stackable, plug-in cables of suitable lengths and colours and with a training manual.
Together with the board, that contains the power circuits complete with relevant piloting, it is possible to realize an open and closed loop control both of the lighting system (24V, 15W lamp and photoresistor) and of the heating system (47, 25W heating element and integrated circuit sensor).
This board contains two independent systems, for the control of the light and of the temperature respectively, each one complete with reference block, error amplifier, transducer and actuator.
Power supply: 15Vdc, 100mA
Experiments:
Full-wave triac control
Proportional control
AC operated lamp
DC operated lamp.
The sampling frequency can be provided by the generator which is integrated in the module or by an external signal. Used to discontinuously sample the behaviour of a continuous control on a process.
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Construction of a pressure control loop
2 pressure tanks with safety valves
Direct pressure indication by 2 manometers
Ready-to-install compact panel assembly
Compressed air as working medium, supply via base module
Valve permits series configuration of both pressure tanks
2 valves: 1x drain, 1x vent
Copper piping
Series configuration of pressure tanks: investigation of coupled controlled system response compared Single-tank operation.
Material: Non-stretch polyester film
Lightweight flexible wrap-around blanket
Easy to unfold, strong, tear resistant
Single use, non-sterile
Wind and waterproof, and rot proof
Stays flexible in freezing temperatures
Rectangular size, approximately: 220 x 140cm
One side silver coated, reflects up to 90% of radiated heat
Dimensions:
Length, approximately: 220cm
Width, approximately: 140cm
Thickness, approximately: 12µm
Stopwatch with simple time, split time, and must be with pause button daily timing alarm and automatic snooze function, shows the time, 12 and 24 hour format, calendar, week, shockproof structure function. Using electronic chip, the battery voltage is 1.5V. Specifications for the 110mm x 90mm x 35mm, the data can be accurate to 0.01s.
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It is used to demonstrate electrophoresis of colloid and understand cause of formation of electrophoresis. It consists of base power supply device, scaled U-tube, electrode, plug and switch.
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A track with a ruler, friction block, car, controller and so on
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