Skip to main content

Features of microprocessor based instrumentation

Short answer

Microprocessor-based instrumentation provides programmability (function modified by software), intelligent decision-making (linearization, alarms), high accuracy via digital corrections, flexibility to add sensors/displays, data storage and display, communication (RS-232, I2C), self-test, and compact low-power design replacing hardwired logic.

Explain the features of microprocessor based instrumentation system.

A microprocessor based instrumentation (MBI) system uses a microprocessor/microcontroller to acquire, process, display and control measured quantities. Its main features are:

  1. Programmability: the function can be changed by changing software, with no hardware change.
  2. Intelligence and decision making: it can compare, calculate, linearise sensor outputs and make control decisions or alarms.
  3. Accuracy and stability: digital processing removes drift; calibration, offset and gain errors can be corrected by software.
  4. Flexibility and expandability: extra sensors, displays and communication links can be added through I/O ports.
  5. Data storage and display: readings can be stored in memory, shown on LCD/LED, printed or sent to a PC.
  6. Communication: serial and network links (RS-232, RS-485, I2C, Ethernet) allow remote monitoring.
  7. Self-test and fault diagnosis, automatic ranging and calibration.
  8. Lower cost, size and power compared with equivalent hardwired logic, and high reliability.

✓ Answer checked by Claude Sonnet 5.5

Related questions

All Instrumentation II chapter 1 questions →