A rigid enclosure with acoustic lining may be placed over either noise source and attachments allow investigation of sound attenuation in ducts.
Each of two microphones may be connected to a DBA Filter and illuminated bar display to show relative loudness.
A self-contained unit for the demonstration of the methods of noise and vibration control. Variable control of both voltage sources allows speed control of both motors. An integral 240v electric motor and gearbox together with a 12v fan unit provide two noise sources.
Resilient mountings and mount bypass equipment allows investigation of modes of vibration at various frequencies and transmission of noise through solids.
The Equilibrium of Parallel Forces are produced with cords tensioned by weights on hangers, double pulleys being used to turn the upward forces downward. A Equilibrium of Parallel Forces board is clamped into the Universal Frame and Stand Two acrylic models engraved to simulate a 'Warren' and an 'N' truss are used for the application of vertical loads and reactions. The lines of action of the cords can be transferred onto a sheet of paper clipped to the force board. The set of weights needed for the experiment is included. A circular disc with twelve attachment points is used for the couples. To simplify the results each acrylic model has a counterbalancing weight to render each one 'weightless'.
Experimental Capabilities:
Special case where equal and opposite parallel forces produce a couple acting on a body
Equilibrium of opposing couples
Verify the conditions of equilibrium when sets of parallel forces act in one plane on a rigid body
Experimental verification of the use of a link polygon and is a test of M = 0 (where M = moments)
Fv = 0 (where F = forces and V = vertical).
The drive unit consists essentially of an oscillator and a power amplifier designed to provide a sine wave power output suitable for driving the vibration generator. Comprises a drive unit and vibration generator with experimental accessories.
Features:
Demonstration of Hookes Law applied to a spring
Demonstration of Simple Harmonic Motion of a free body
Vibration of a Double Cantilever Beam
Vibration of a Spring Mass System.
Intended use:
Various clinical laboratory usage conditions including; Sample/reagent preparation, incubation, centrifugation, vortex, and cold storage.
Handheld, portable, rechargeable battery powered pulse oximeter, displaying patient oxygen saturation (SpO2), pulse rate and respiratory rate in real time.
Features:
Suitable for detection in low perfusion conditions down to perfusion index of 0.1%.
Design enables use in demanding environments, e.g. shock, vibration
Automatic correction for movement and ambient light artefacts
Audible and visual alarms for sensor error or disconnected, system errors, low battery.
Measurement:
SpO2, pulse rate and respiratory rate monitor, for infants, children, adults.
SpO2 detection includes the range: 70 - 100 %.
SpO2 resolution: 1 %.
SpO2 accuracy (in the range at least 70 - 100%): ± 2% (no motion, low perfusion), ± 3% (motion) for all patients (infants, children and adults).
Pulse Rate detection includes the range: 25 - 240 bpm.
Pulse Rate resolution: 1 bpm.
Pulse Rate accuracy: within ± 3 bpm (no motion, low perfusion), ± 5 bpm (motion) for all patients (infants, children, adults).
Respiratory rate includes the range: 4 to 90 rpm.
Respiratory rate resolution: 1 rpm
Respiratory rate accuracy within ± 1 rpm in ideal conditions
Electrical characteristics:
Operated by rechargeable, non-replaceable Li-ion battery, power supply
External AC battery charger, plug style and voltage as per local supply.
Charger certified to IEC 60601-1.
Protection against defibrillator discharges.
Suitable for operation by battery and by mains power supply, if connected and/or recharging.
Automatic switch between battery and mains powered modes, when recharging or in mains power failure.
The display shows which power source is in use.
Running time on battery only ≥ 12 hours (24h at lowest screen brightness and beep tone turned off).
Automatic power-off after period of no use.
Display:
Data display refresh rate ≤ 1 s
Display with main parameters: %SpO2, pulse rate, respiratory rate, signal quality, status messages, battery state indication.
Patient age group input feature.
Display indicates high and normal respiratory rate count for inputted age.
Display indicates when SpO2 < 90% (hypoxaemia per WHO guidelines.)
Casing:
Enclosure protection IPX2.
Case and probe suitable for cleaning and disinfection with hospital-grade cleaning products.
Overall device and probe weight < 300 g.
Sterile enteral feeding/aspirating catheter for single use.
Single channel tube.
Open distal end with four side windows.
Tube with markings at 40, 50, 60 and 70cm from the distal end.
Proximal end with cup connector, conical tip, allowing the tube to be connected to devices such as feeding syringes (catheter tip) or suction pump system.
Material: Polyvinyl chloride (PVC)
Size selected: Diameter CH08, length approximately 125cm
Disposable
Length expressed in cm.
Colour code/ external diameter: Visible on cup connector.
Sterile
Initial sterilisation method: Ethylene oxide gas.
Kit indicates presence or absence of iodine (if the salt is fortified with potassium iodate). Iodised salt test kit, for determining presence or absence of iodine in salt fortified with potassium iodate (KIO3).
....
The pan is moulded in PP and can be bolted to the underside of squatting plate using the fasteners provided.
The trap is fixed to the pan using the adhesive that has been provided.
There are 2 types of traps, a "P" trap and a Goose neck trap, both of which are moulded in HDPE.
The product is composed of three base,two biconvex lens,one biconcave lens, three supporting rod, white screen, ground glass, frosted glass screen in, light source, and so on.
....
It is used to measure time, introduce the achievement of ancient astronomy and demonstrate shadow of object on the ground in the sunshine will change with time and date caused by the rotation of the earth.
....
The products are made up of experiment box base, electrobath, wiring device and so on. Cell size is 45 x 25 x 46mm; two element size is 4 x 45mm; connecting line adopts multi strand copper core insulation wire length is not less than 100mm. The box seat size about 125 x 60 x 150mm; the cell comprises a box seat and a rubber cushion cover, rod and connecting line.
....
The World Three-Dimensional Terrain Model
....
Magnetic Induction Line Demonstrator
....
The bottom insert which holds the turbidimeter and key accessories is made of 100% recycled ABS plastic, and can be recycled in the event it becomes damaged and is no longer usable.
This set replaces the Carrying Case, upper foam insert and lower tray insert for use with all versions of the turbidimeters. Pieces are not available separately.
The case features an easy to grip handle, and the integrated hinges make it robust and field-ready.
Suitable for construction, machine operation, utility work and many general applications
Gloves return to their original pliability even after being soaked in water.
Elastic wrist provides a sure fit
Gunn-cut style with straight thumb
Unlined.
Electromagnetic Devices Study Module Electronic Engineering Lab
....
