Metrology weights

Table of content

Scientific Metrology

Accuracy class E – Accuracy class F – Accuracy class M

OIML WEIGHTS FROM 1 mg TO 50 kg E1 & E2

OIML Weights features class E

These weights comply with metrologic standards (Maximum Error Tolerated= MET) in terms of material (roughness, magnetisation, etc.) of shape and marking to the OIML R111 international standard. They can be delivered individually or in set, and packed in wooden box or plastic case. All the mg weights are wire shaped (triangular, square or pentagonal). They are usually proposed with COFRAC (Mass accreditation 2-1218 Scope available on www.cofrac.fr) calibration, service that Zwiebel is able to support thanks to its 3 accredited laboratories.

E class weight application areas

E1 calibration weights are used for :

  • Calibration of E2 class weights in compliance with OIML R111 till 50kg
  • Calibration of weighing equipment which level number is higher than 1 000 000.
  • Verification of class I weighing equipement from in accordance with OIML R76 or 45501.
  • Calibration of class I weighing equipment

E2 calibration weights are used for :

  • Calibration of F1 class weights in compliance with OIML R111 till 1000kg
  • Calibration of weighing equipment which level number is higher than 1 00 000.
  • Verification of class I weighing equipement from in accordance with OIML R76 or 45501.
  • Calibration of class I or II weighing equipment

Thanks to its experience , Zwiebel can assist you in all your weights and masses measurement needs. We are able to go further in ultra precision need and to our state-of-the-art expertise and innovation capacity mean we can meet requests higher than E1.
We are then able to propose E0 masses (E0 does not belong to uncertainty precision class but to the 1/3 of uncertainty of E1 class. These one will be used for calibration of E1 weights till 50kg.
This type of request are on request only.

Handling / Maintenance / Storage for E class weights

Zoom de poids E2 dans un coffret bois

Handling/Using : Zwiebel proposes a complete range of accessories that enable you to use ypur weights in optimal conditions (tweezer, weight handle, gloves, etc..).

Maintenance : In order to ensure the results, your weights have to be regularly cleaned. As the surface properties of the weight must not be modified, our brushes or cleaning set will help you in the care purpose of your weights.

Storage : It is recommended to store standard weights and masses in their original boxes. Weights and masses without box shall be stored in appropriate places (laboratory conditions, under glass etc…)

Environment

Storage temperature

Humidity

Area

Storage of weights of classes E

20°C (+/- 5°C)

50% (+/- 25%)

Excluding Dust – excluding bad weather condition

Weights technical data sheet (PDF)

OIML WEIGHTS FROM 1 mg TO 50 kg F1 & F2

OIML Weights features class F

These weights comply with metrologic standards (Maximum Error Tolerated= MET) in terms of material (roughness, magnetisation, etc.) of shape and marking to the OIML R111 international standard.
They can be delivered individually or in set, and packed in wooden box or plastic case.
All the mg weights are wire shaped (triangular, square or pentagonal). They are usually proposed with COFRAC (Mass accreditation 2-1218 Scope available on www.cofrac.fr) calibration, service that Zwiebel is able to support thanks to its 3 accredited laboratories.

F1 weights starting 1g are polished, whereas those from F2 are brushed.

F class weight application areas

F1 calibration weights are used for :

  • Calibration of F2 class weights in compliance with OIML R111 till 5000kg
  • Calibration of weighing equipment which level number is higher than 30 000.
  • Verification of class I weighing equipement from in accordance with OIML R76 or 45501.
  • Calibration of class II weighing equipment

 

F2 calibration weights are used for :

  • Calibration of M1 class weights in compliance with OIML R111 till 5000kg
  • Calibration of weighing equipment which level number is higher than 10 000.
  • Verification of class II weighing equipement from 10 000 to 30 0000 in accordance with OIML R76 or 45501.
  • Calibration of class II weighing equipment which level number is comprised between 10 000 and 30 000.

Thanks to its experience , Zwiebel can assist you in all your weights and masses measurement needs. We are able to go further in ultra precision need with our range of F1 positive tolerance, ensuring a higher long life use.

Handling / Maintenance / Storage for E class weights

Poids Zwiebel F1

Handling/Using : Zwiebel proposes a complete range of accessories that enable you to use ypur weights in optimal conditions (tweezer, weight handle, gloves, etc..).

Maintenance : In order to ensure the results, your weights have to be regularly cleaned. As the surface properties of the weight must not be modified, our brushes or cleaning set will help you in the care purpose of your weights.

Storage : It is recommended to store standard weights and masses in their original boxes. Weights and masses without box shall be stored in appropriate places (laboratory conditions,etc…)

Environment

Storage temperature

Humidity

Area

Storage of weights of F classes

20°C (+/- 5°C)

50% (+/- 25%)

Excluding Dust – excluding bad weather condition

Weights technical data sheet (PDF)

OIML WEIGHTS FROM 1 mg TO 50 kg - M1, M2 & M3 classes

OIML Weights features class M

These weights comply with metrologic standards (Maximum Error Tolerated= MET) in terms of material (roughness, magnetisation, etc.) of shape and marking to the OIML R111 international standard. They can be delivered individually or in set, and packed in wooden box or plastic case. All the mg weights are sheet shaped (triangular, square or pentagonal). They are usually proposed with COFRAC (Mass accreditation 2-1218 Scope available on www.cofrac.fr) calibration, service that Zwiebel is able to support thanks to its 3 accredited laboratories.

M class weight application areas

M1, M2, M3 calibration weights are used for :

  • Calibration of weighing equipment which level number is smaller than 10 000.
  • Verification of class III and IIII weighing equipement in accordance with OIML R76 or 45501.
  • Calibration of class III and IIII weighing equipment.

Handling / Maintenance / Storage for M class weights

Poids Zwiebel M1

Handling/Using : Zwiebel proposes a complete range of accessories that enable you to use your weights in optimal conditions (tweezer, weight handle, gloves, etc..).

Maintenance : In order to ensure the results, your weights have to be regularly cleaned. As the surface properties of the weight must not be modified, our brushes or cleaning set will help you in the care purpose of your weights.

Storage : It is recommended to store standard weights and masses in their original boxes. Weights and masses without box shall be stored in appropriate places (avoid exposing the weights to dust and dirt, storing weights in a humid atmosphere, submitting weights to a strong magnetic fields)

Environment

Storage temperature

Humidity

Area

Storage of weights of  F classes

20°C (+/- 10°C)

50% (+/- 25%)

Excluding Dust – excluding bad weather condition

Weights technical data sheet (PDF)