Analog Circuits are the core in any instrument design, Even in a Instrument with Digital or uC control. The Interface to the Real World parameters is Analog. High Speed Analog and High Energy Measurements are the challenging areas.
T&M and Process Control Instrumentation have many things in common; but the conditions in which a Industrial Instrument works, may be very unfriendly.
Instrumentation and Measurement Circuits
Industrial Instruments are used both in Clean-Cool Control Rooms and also in a corrosive, humid, hot and vibrating industrial environment. Even high levels of Static, Magnetic influences in conjunction with spikes and brown outs can be expected.
- Auto ranging 4-1/2 Digit Digital Voltmeter
- 3-1/2 Digit ICL7107 Digital Panel Meter
- Current Source mA for calibration
Test and Measurement instruments are of two types, by way of its usage; Portable and Benchtop. Portable Instruments will consume low power, insulated and rugged. The Product Safety features are more stringent as they are HandHeld or slung over the shoulder. Some features and specs are sacrificed. The Benchtop version has more front panel space and can interface with other instruments or systems. More accuracy and features can be accommodated in this.
Other Circuits on this page are - in PDF -
- Linearizing circuit using opamps
- Universal signal conditioner differential amp
- Simple MilliVolt Source
- 0-2V to 4-20mA Converter
- Analog averaging circuit with Opamps