Inst ToolsInst ToolsInst Tools
  • Courses
  • Automation
    • PLC
    • Control System
    • Safety System
    • Communication
    • Fire & Gas System
  • Instrumentation
    • Design
    • Pressure
    • Temperature
    • Flow
    • Level
    • Vibration
    • Analyzer
    • Control Valve
    • Switch
    • Calibration
    • Erection & Commissioning
  • Interview
    • Instrumentation
    • Electrical
    • Electronics
    • Practical
  • Q&A
    • Instrumentation
    • Control System
    • Electrical
    • Electronics
    • Analog Electronics
    • Digital Electronics
    • Power Electronics
    • Microprocessor
  • Request
Search
  • Books
  • Software
  • Projects
  • Process
  • Tools
  • Basics
  • Formula
  • Power Plant
  • Root Cause Analysis
  • Electrical Basics
  • Animation
  • Standards
  • 4-20 mA Course
  • Siemens PLC Course
Reading: Selection of Weighing Balance and Weight for Calibration
Share
Font ResizerAa
Inst ToolsInst Tools
Font ResizerAa
  • Courses
  • Design
  • PLC
  • Interview
  • Control System
Search
  • Courses
  • Automation
    • PLC
    • Control System
    • Safety System
    • Communication
    • Fire & Gas System
  • Instrumentation
    • Design
    • Pressure
    • Temperature
    • Flow
    • Level
    • Vibration
    • Analyzer
    • Control Valve
    • Switch
    • Calibration
    • Erection & Commissioning
  • Interview
    • Instrumentation
    • Electrical
    • Electronics
    • Practical
  • Q&A
    • Instrumentation
    • Control System
    • Electrical
    • Electronics
    • Analog Electronics
    • Digital Electronics
    • Power Electronics
    • Microprocessor
  • Request
Follow US
All rights reserved. Reproduction in whole or in part without written permission is prohibited.
Inst Tools > Blog > Calibration > Selection of Weighing Balance and Weight for Calibration

Selection of Weighing Balance and Weight for Calibration

In this article, you will learn the selection procedure of weighing balance and weight for calibration purpose.

Last updated: September 28, 2022 3:24 pm
Saurabh Vaidya
Calibration
No Comments
Share
2 Min Read
SHARE

Selection of weight for Weights Calibration

A standard weight should be a higher class of accuracy than the weight to be calibrated.

Contents
Selection of weight for Weights CalibrationSelection of Weighing Balance for Weights CalibrationSelection of Weight for Weighing Balance Calibration

E1 class is the highest accuracy and M 3 class is the lowest accuracy.

Uncertainty of calibration of the Standard weights used will be 1/3 of its specified maximum permissible error.

Class of Weights that can be Calibrated

For calibration of E2 class weight, the E1 class should be used as standard.

For calibration of F1 class weight, the E2 class should be used as standard.

For Calibration of E1 class weight, standard weight should have similar or better metrological characteristics like magnetic properties, surface roughness, corrosion, etc.

Selection of Weighing Balance

Standard weights of each class shall have the technical requirements such as shape, construction, material, marking, etc as per OIML-R111-1.

 M1, M2, and M3 class weights are not recommended to be used as a reference for the calibration of weights. However, M1 weights can be used for above 20kg with coarser uncertainty.

Selection of Weighing Balance for Weights Calibration

Selection of Weighing Balance for Weights Calibration

In the above table, the Maximum Standard deviation of repeatability allowed to calibrate a specific class of weight is provided.

Selection of Weight for Weighing Balance Calibration

Selection of Weight

Let’s take an example

Weighing Balance of maximum capacity of 200 g with resolution d = 0.001 g

n is capacity divided by resolution

n= 220/0.001 = 220000

now check in the above table, where this n value fits.

n value fits in the 2nd column.

I.e., for the Weighing Balance of the maximum capacity of 200 g with a resolution of 0.001 g, it should be calibrated by E1 or E2 class weights.

Accuracy of standard weight used for calibration of weighing balance should be minimum of 1/3rd of readability (1/3 of least count of balance)

Weighing Balance and Weight

Reference Document OIML-R-111-1 and OIML R-76-1

Don't Miss Our Updates
Be the first to get exclusive content straight to your email.
We promise not to spam you. You can unsubscribe at any time.
Invalid email address
You've successfully subscribed !

Continue Reading

Step by Step Guide for Gas Flow Meter Calibration
How to Create Calibration Records?
Load Cell Healthiness Checks
How to Calibrate Temperature Switch? – Instrument Basics
Hierarchy of Calibration Organizations
Multiphase Flow Meter Calibration Procedure
Share This Article
Facebook Whatsapp Whatsapp LinkedIn Copy Link
Share
Leave a Comment

Leave a Reply Cancel reply

Your email address will not be published. Required fields are marked *

Stay Connected

128.3kFollowersLike
69.1kFollowersFollow
210kSubscribersSubscribe
38kFollowersFollow

Categories

Explore More

Turbidity Sensor Calibration Procedure
Instrumentation Engineer’s Calibration Mistakes
Error sources creating uncertainty in Calibration
Fieldbus Flow Transmitter Configuration
Hydrogen Sulfide Gas Detector Calibration Procedure
Pressure Gauge Calibration Procedure
Displacer Level Transmitter Dry Calibration with Weights
Dissolved oxygen probe calibration procedure

Keep Learning

transmitter calibration procedure

Transmitter Calibration Procedure

RTD Testing Methods

RTD Testing Methods in Calibration Laboratory

NIST Traceability

NIST Traceability

Calibration of Weight

Calibration of Weight using the ABBA Method

Types of Calibration

Types of Calibration

Magnetostrictive Level Transmitter Calibration

Magnetostrictive Level Transmitter Calibration Procedure

Fieldbus Transmitter Calibration

Fieldbus Transmitters Calibration and Ranging

Self Actuated Pressure Control Valve Functional Testing

Self Actuated Pressure Control Valve Functional Testing

Learn More

Standard Maintenance Procedure

Standard Maintenance Procedure (SMP)

Turbine and Compressor Control System

Turbine and Compressor Control System

PLC Program for Automatic Parameter initialization

PLC Program for Automatic Parameter Initialization When Power UP

Installation and Calibration of Level Transmitter

Installation and Calibration of Level Transmitter

Vortex Flow Meter Animation

Basic Working Principle of Vortex Flowmeter

Shockley Diode Working Principle

Shockley Diode Working Principle

RTD lead resistances Wiring

Resistance Temperature Detectors Working Principle

Y Strainer

What is a Y Strainer ?

Menu

  • About
  • Privacy Policy
  • Copyright

Quick Links

  • Learn PLC
  • Helping Hand
  • Part Time Job

YouTube Subscribe

Follow US
All rights reserved. Reproduction in whole or in part without written permission is prohibited.
Welcome Back!

Sign in to your account

Username or Email Address
Password

Lost your password?