What is calibration?

Calibration is checking the exactness of a measurement instrument by comparing it to mention standards. The repercussion of equipment calibration is progressive correctness. Electronic calibration is one of the three main types of calibration methods used today. Other types of objector calibration methods fix mechanical and thermal calibration. Electronic calibration deals are subsequent to the calibration of electric and electronic instruments.

Calibration is a comparison along between a known measurement (the to your liking sufficient) and the measurement using your instrument. Typically, the accuracy of the uphill to confirmed should be ten times the precision of the measuring device beast tested. However, correctness ratio of 3:1 is allowable by most standards organizations.

The calibration of your measuring instruments has two objectives. It checks the exactness of the instrument and it determines the traceability of the measurement. In practice, calibration plus includes repair of the device if it is out of calibration. A marginal note is provided by the calibration adept, which shows the millstone in measurements considering the measuring device in the back and after the calibration.

Instrument calibration is the process of comparing the measurements made by the instrument to be calibrated adjacent door to a known measurement of either standards or an instrument known to be making measurements that exceed the ample limits of exactness and precision.

The frequency of calibration is as well as largely dependent approaching the impact of the instruments as regards character and its tendency to drift from the definite measurement. Based on the region of the order of this recommendation, a general calibration regimen can be created for each instrument.


1. Linear Instruments

  • Vernier Calipers
  • Inside/Outside Micrometers
  • Measuring Tapes/ Scales/Rulers
  • Dial Indicators/ Depth gauges/ Height Gauge
  • Gauge Blocks
  • Fillet/Feeler/Pitch Gauges
  • Protractors/ Angles / Tri-squares
  • Hol-Test

2. Thermal Instruments

  • Digital/ Analog dial type Thermometers
  • Thermocouple/ RTD sensors & transmitters
  • Infrared Thermometers
  • Temperature Switches
  • Temperature Controllers/ Indicators
  • Climatic Chambers such as ovens/ freezers/ chillers

3. Pneumatic Instruments

  • Digital & Analog Pressure Gauges
  • Pneumo gauges
  • Pressure Indicators/ Transmitters
  • Filters & Regulators/ Regulator gauges
  • Safety Relief Valves
  • Chart Recorders
  • Control Valves

4. Electrical Instrument Calibration Devices

  • Digital & Analog Multimeters/ Voltmeters/ Ammeters/ Process meters
  • Clamp Meters
  • Oscilloscope
  • LCR Testers
  • Earth Testers/ Insulation Testers/ Ohmmeters
  • Portable Appliance Testers
  • Capacitance/ Resistance/ Inductance meters

5. Chemical Equipment

  • Gas detectors/ Monitors/ Analyzers
  • PH Analyzers/ Conductivity Meters/ TDS Meters

6. Flow Check Devices

  • Diesel Flow Meters
  • Electronic/ Analog Flowmeters/Transmitters
  • Water meters

7. Other Required Devices

  • Torque Wrenches
  • Hydro-test
  • Hydraulic/ Pressure Pump
  • Weight Blocks
  • Weighing Balances/ Machines/ Bridges/ Load cells
  • Compressors/ Generators
  • Grinding/ Drilling/Cutting Machines
  • Compression/ Aggregate Impact Value/ CBR Marshall Machine


Calibration defines the accuracy and quality of measurements recorded using a piece of equipment. Over time there is a tendency for results and accuracy to ‘drift’ when using particular technologies or measuring particular parameters such as temperature and humidity. To be confident in the results being measured, there is an ongoing need to maintain the calibration of equipment throughout its lifetime for reliable, accurate and repeatable measurements.

The goal of calibration is to minimize any measurement uncertainty by ensuring the accuracy of test equipment. Calibration quantifies and controls errors or uncertainties within measurement processes to an acceptable level.


Consider the cost of calibration as an investment and the potential results of an incorrect reading as the cost of not making the investment.

For most industries, the standard is to calibrate annually. As you gain results from calibration tests, you will be in a position to potentially adjust the frequency of calibrations, and/or upgrade to more robust measuring instruments if needed. Most calibration laboratories supply a printed calibration certificate for the customer to retain as proof of quality standards.

In summary, calibration is vitally important wherever measurements are important; it enables users and businesses to have confidence in the results that they monitor record and subsequently control.

Contact us for a quote to calibrate your equipment.