Physics  > Electronics  > Instrumentation Trainers  > Page 1
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Thermistor 2201
Study of thermistor as temperature measuring transducer electrically heated oven up-to 90ºC Thermistor (NTC) mounted in metallic tubing and protected from corrosion. Study of non-linear (exponential) characteristics Unbalance Bridge circuit with 1st degree linearization Differential gain amplifier 3.5 digit DPM as temperature scale Glass thermometer for reference Detailed instruction manual

Thermocouple 2202
Study of thermocouple as temperature measurement transducer. electrically heated block to raise temperature >200ºC, with different voltage. Thermocouple transducer type K, housed in a steel tube. Cold junction compensation circuit. High gain instrumentation amplifier. 3.5 digit DPM as temperature indicator. Glass thermometer for reference. Detailed instruction manual.

Resistance Temperature Detector 2203
Study of RTD as temperature measuring transducer. Electrically heated oven up to 90ºC RTD (PT-100) probe with protection cover. 3.5 digit DPM as temperature indicator. Bridge circuit for transducer. Differential amplifier with feedback. Lead compensation system. Glass thermometer for reference. Detailed instruction manual.

Measurement of Speed by Photo Electric Pick Up 2205
Study of speed measurement by light interrupt method 12V, 2400 RPM permanent magnet dc motor Speed controller (0-2400 RPM) up to interrupter disc. LED as light source Photo diode as sensor Signal conditioning circuitry based upon Op amps Electronic tachogeneration 4 digit digital counter as speed indicator Test points at various places to study the process The motor and transducer unit is covered with acrylic sheet. Built in IC regulated power supplies for motor and process circuit. Detailed instruction manual.

Measurement of Speed by Electromagnetic Pick Up 2206
Study of speed measurement by variable reluctance transducer 12V, 2400 RPM permanent magnet dc motor Speed controller (0-2400 RPM) Electromagnetic pick up Signal conditioner circuitry based upon Op-amps Excitation voltage for pick up 4 digit digital counter for speed display Electronic tachogeneration. Built in IC regulated supplies Detailed instruction manual.

Measurement of Light Intensity by Light Dependent Resistance 2207
Study of light dependent resistor as light intensity measuring transducer Sockets for LDR to measure resistance at different intensity levels to determine the non-linear nature 1st degree linearization circuit unbalance bridge for LDR interface 12 Volt 21 Watt tungsten lamp with intensity control (continuously variable) Calibration graph supplied with the tutor Luxmeter (optional) 3.5 digit DPM as light intensity indicator sockets at different places to study the process To find out the error rate Detailed instruction manual.

Measurement of Light Intensity by Photo Voltic Cell 2208
To study of Photo Voltic Cell as light intensity measuring transducer 12 Volt 21 Watt lamp with intensity controller (continuously variable). Silicone Photo Voltic Cell mounted in bakelite mould. Provision for operating the cell at different points upon the output curve to prove the linear transfer nature in short circuit mode and non linear in open circuit mode Op amp as signal conditioner 3.5 digit digital DPM as light intensity indicator. Built in IC regulated power supply detailed instruction manual with calibration curve.

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