SALIENT FEATURES :
ADTRON’s Instrumentation Tutor is a very versatile training system. It consists of a wide range of transducers, its various instrumentation and signal processing methods necessary associated power supplies, excitation sources and various electromechanical jigs and fixtures for actual working of the various transducers.
ADTRON’s Instrumentation Tutor is modular in format, wherein each transducer is treated individually and then, using the electronic instrumentation, it is shown how they integrate into complete measurement system. The various transducers covered in this instrumentation tutor utilizes a variety of physical properties so that in total a very comprehensive treatment of the subject is achieved.
ADTRON’s Instrumentation Tutor is specialized bench – top modular study system divided into 3 parts. It is suitable for most Engineering disciplines. Here mathematics is kept to minimum level consistent with that necessary to cover the subject adequately. The coverage is equally suitable for fields of electronics and electrical engineering, chemical engineering, process control and instrumentation physics and also mechanical engineering.
Instrumentation Tutor Part III consists of Piezo Electric Pickup for Force sensing, Angular displacement measurement using capacitive and resistive transducer and Strain measurement using Stain Gauge.
A. PIEZO ELECTRIC PICK – UP :
The Piezo Electric Pick – up transducer is made up of piezo material which has the property of giving a momentary signal when force is applied meter on it. This momentary deflection is indicated by the digital meter. A high input impedance amplifier and the electronic circuitry for sensing the momentary output of the peizo are provided.
TECHNICAL SPECIFICATIONS :
Parameter Measured : Dynamic Force.
Measurement System : Transducer with Electronic Instrumentation.
Transducer : Special type of Piezo Electric Transducer in disc form.
Actual Dynamic : The dynamic force is applied by simply FORCE tapping on the transducer which is mounted on a rigid base.
Connectors : The Piezo Electric Pickup transducer is connected to the main unit through a special type of connector.
Instrumentation : Built-in high impedance amplifier and other instrumentation for the measurement.
Readout : 0.5″, 3.5 digit digital display to indicate the momentary deflection in millivolts.
B. ANGULAR DISPLACEMENT :
1. RESISTIVE :
This part of the module demonstrates the principle and working of a resistive potentiometer for measurement of angular displacement. It consists of a DC excitation source, precision amplifier, and a digital readout.
TECHNICAL SPECIFICATIONS :
Parameter Measured : Angular Physical Displacement, 0 to 2700.
Measurement System : a. Calibrated Dial ( 0 to 2700 ).
b. Transducer with electronic instrumentation.
Transducer : Potentiometric, Resistive type.
Actual Displacement : By rotating the shaft of the potentiometric transducer.
Excitation Source : + 5V + 10 % DC Regulated power source.
Readout : 3.5 digit digital display to measure 0 to 2000mV DC indicating angular displacement in millivolts.
2. CAPACITIVE :
This part of the module demonstrates the principle and working of the specialized dedicated transducers known as “Capacitive” ( Di – electric gang ) type and also shown is one of its unique applications to measure physical angular displacement. A special arrangement to vary the displacement accurately a variable excitation source, electronic instrumentation and digital readout.
TECHNICAL SPECIFICATIONS :
Parameter Measured : Angular Physical Displacement.
Measurement System : 1. Air gang with calibrated dial mounted on its shaft.
2. Transducer with electronic instrumentation.
Transducer : Capacitive.
Type : Di – Electric gang.
Displacement Range : 00 to 900.
Readout : 3.5 digit digital display to measure 0 to 200mV AC indicating displacement in millivolts.
Note : Common Digital meter for both Resistive and Capacitive type to measure angular displacement.
B. STRAIN GAUGE :
This part of the module demonstrates the principle and working of the specialized dedicated transducer known as “Strain gauge” and also shown is one of its unique application to measure strain in Kg. The trainer also consist of tare adjustment facility and digital readout.
TECHNICAL SPECIFICATIONS :
Parameter Measured : Strains in terms of kilograms on a cantilever beam.
Measurement System : 1. Weights.
2. Transducer with Electronic Instrumentation.
Transducer : Temperature compensated strain gauge.
Type : Cu – Ni foil with polyamide carrier base.
Gauge Resistance : 350 Ohms ( Nominal ).
Gauge Length : 6 mm.
Gauge Width : 2.4 mm.
Gauge Base : 12.5 mm x 4.3 mm.
Gauge Factor : 2.1 ( approx. ).
Transducer Measurement : Strain gauges mounted on a stainless steel cantilever beam.
Configuration : Bridge with two arms as strain gauges ( Wheatstone’s Bridge Principle ).
Range : 10 Kilograms.
Actual Strain : By various weights to be placed in a pan fixed with the beam.
Excitation Source : DC Regulated source.
Tare Adjustment : Zero adjustment by a ten – turn potentiometer.
Readout : 3.5 digit digital display to indicate Strain in kilograms.