Steps to carry out accurate calibration

Calibration is important because it helps ensure accurate measurements, and accurate measurements are foundational to the quality, safety, and innovation of most products and services we use and rely on every day. The accuracy of all measuring devices degrades over time. This is typically caused by normal wear and tear. However, changes inaccuracy can also be caused by electric or mechanical shock or a hazardous manufacturing environment (e.x., oils, metal chips, etc.). Depending on the type of instrument and the environment in which it is being used, it may degrade very quickly or over a long period of time. This is why calibration improves the accuracy of the measuring device and accurate devices improve product quality. However, a measuring device should be calibrated according to the recommendation of the manufacturer, after any mechanical or electrical shock, periodically(annually, quarterly, monthly).

A calibration certificate includes the result of the comparison and all other relevant information of the calibration, such as equipment used, environmental conditions, signatories, date of calibration, certificate number, the uncertainty of the calibration, etc. Calibration services are basically divided into three, based on the system relationship under calibration. The services include:

Electric calibration 

This focuses on the electrical device input-output relationship. The electrical gadget sometimes comes with a transfer characteristic, in any case, the instrumentation engineer should comprehend a definitive normalization through all parts of the signal learning framework. An instrumentation engineer should be familiar with the techniques used by the manufacturer to calibrate individual transducers.

Data system calibration 

This stimulates or models the input of the whole mensuration system rather than physically stimulating the electrical sensing device. A data system calibration is the best service in the calibration laboratory Singapore that an instrumentation engineer can do to ensure the acquisition of valid data.

Physical end-to-end calibration.

An end-to-end calibration verifies the measurement system characteristics. The instrumentation engineer monitors the signal getting into the info assortment unit to confirm the calculated price matches the particular system transfer perform.  It is highly recommended that an end-to-end calibration must be performed before the experiment and after the experiment is completed but before the instrumentation system is removed. The end-to-end calibration checks the measurement system (including wiring, connectors, routing, etc.) installed on the test article so that the engineer can identify and correct any potential problems early.

Types of calibration

All measuring instruments, whether they are used in manufacturing plants or laboratories, need to be calibrated on a periodic basis to ensure they are offering accurate results.

1. Electrical Calibration

Electrical calibration refers to the way toward checking the presentation of any instrument that measures or tests electrical parameters like voltage, inductance, capacitance,

 resistance, current, time, and frequency. Electrical calibration requires the use of precise devices or calibrators that evaluate the performance of key properties for other devices called units under test (UUTs). During mechanical calibration factors like mass, force, angle, flatness, vibration, dimension,  and torque are calibrated in a temperature-controlled facility.

Instruments that are often sent for electrical calibrations are:

Insulation testers

Oscilloscope

Frequency counters

Insulation testers

Data loggers

Multi-meters

Loop testers

Electrical meters

2. Temperature calibration

Equipment that requires temperature calibration on a periodic basis include:

Data acquisition systems

Thermometers/thermocouples

Infrared Meters

Thermal cameras

Chambers/Furnaces

PRTs and thermistors

Dial thermometers

A temperature calibration can only be performed by comparing a known standard, in a stable temperature environment to the probe being tested and conducted and carried out in a controlled environment. In the process of temperature calibration, thermocouples or platinum resistance thermometers (PRTs), also called resistance temperature devices (RTDs) are usually used.

3. Mechanical calibration

Mechanical instruments are subject to drift due to regular usage, mechanical shock, and exposure to varying atmospheric conditions, as such mechanical calibration is needed. 

Mechanical calibration factors include dimension, force, torque, flatness, vibration, mass, volume, and angle.

A few of the most frequently tested instruments for mechanical calibration include:

Micrometers, verniers, height gauges

Torque wrenches & screwdrivers

Load cells & force gauges

Accelerometers

Weight & mass sets

Scales/Balances

4. Pressure calibration

Pressure calibration plays an important part in a company’s quality assurance. For carrying out pressure calibrations numerous types of pressure balances and calibrators together with high accuracy pressure sensors and pressure gauges.

Examples of pressure instruments that are regularly calibrated are:

Transmitters

Analog pressure gauges

Digital indicators

Transducers

Test gauges

Digital indicators

Barometer 

Pressure calibration alignment is a vital capacity across different industries where measurement equipment is used to monitor process performance and safety, typically measuring gas and hydraulic pressure.

5. Flow calibration

A flow meter (or flow sensor) is a test gadget used to quantify the direct, nonlinear, mass, or volumetric flow rate of a fluid or a gas. The flow rate alludes to the speed at which an interaction the liquid is traveling through pipelines, holes, or vessels at a given time, and control and instrumentation engineers need to quantify this worth to monitor and manage the speed and effectiveness of industrial flow cycles and devices.

The four main types of flow meters that frequently require calibrations are:

Rotometers –gas, and air

Thermal mass flowmeters

Turbine meters

Laminar flowmeters

Flow calibration services need to be carried out periodically for these flow meters that check product or feedstock quality and quantity, fuel/energy quantity, or function in a critical process, to ensure that measurements are accurate allowing operations to proceed in a safe and timely manner.

6. Pipette calibration

For laboratories that oftentimes utilize this estimating instrument, pipette adjustment is fundamental for exact and exact pipetting results. All different kinds of pipettes that are being utilized in the labs: single-channel, multi-channel manual pipettes, and electronic pipettes need to follow a few parts of alignment interaction and protocols. The main objective of the pipette calibration is to ensure that dispensing is carried out with the intended accuracy.

Steps to calibration

1. Identify the measuring devices/instruments

2. Determine certification, calibration, and accuracy check requirements.

3. Methodology

4. Corrective action

5.  Verification

Calibration service is a service with which any deviations and inaccuracies of measuring instruments and dimensional standards (or parts of a measuring instrument) are detected. For calibration services or more inquiries on calibrations contact us: 09093333374, 08064338888. or send us an email: sales@safetynigeria.com.