The National Laboratory for Length and Dimensional Metrology offers calibration of HeNe-Laser sources at 633 nm.

The national laboratories are responsible for maintaining the national reference standards for each measurement quantity and spreading metrological competence and traceability to industry and society at large. The national reference standards are the highest level of traceability in Sweden.

A calibration performed at a national laboratory fulfils all typical traceability and accreditation requirements that commonly exist in industry and society at large. 

Calibration of the object’s laser frequency is performed via heterodyne measurement against one of Sweden’s primary standards for optical frequency. The standards are Iodine-stabilized He-Ne lasers with a laser frequency in agreement with BIPMs recommended values for the realization of the metre in the mise en pratique.

The results from the calibration are:

• Measured vacuum wavelength
• Relative deviation from the specified vacuum wavelength
• Difference between longest and shortest measured wavelength
• Diagram showing the relative deviation of the vacuum wavelength from specified vacuum wavelength

Additionally the optical power is measured.

The laser frequency calibration certificate is issued under the CIPM MRA.

The calibration results are reported in a digital calibration certificate in Swedish or English which states that the calibration was performed at a national laboratory.

When becoming a client you will also get access to our customer website for calibration, where you may also place orders. 

Customer website for calibration

Price on request.

The National Laboratory for photometry and radiometry offers calibration of light sources for photometric and radiometric applications.

The National Laboratories are responsible for maintaining the national reference standards for each measurement quantity and  spreading metrological competens and traceability to industry and society at large. The national reference standards are the highest level of traceability in Sweden. 

A calibration performed at a national laboratory fullfils all typical traceability and accreditation requirements that commonly exist in industry and society at large. 

Calibration of light sources involve the following parameters: 

• Luminous intensity (Candela)
• Luminous Flux (Lumen)
• Correlated Colour Temperature (Kelvin)
• Spectral Irradiance (W⋅m^-2⋅nm^-1, 250 nm - 2500 nm)

The calibrations are performed in accodance with applicable international standards and recommendations. 

Calibrations are generally performed in comparison with the National Laboratories reference sources or through measurements with a reference instrument. For information about measurement uncertainty, traceability or other details about the calibrations please contact one of the contact persons listed below. 

The calibration takes place at the laboratory for photometry and radiometry in Borås. 

The calibration results are reported in a digital calibration certificate in Swedish or English which states that the calibration was performed at a national laboratory.

When becoming a client you will also get access to our customer website for calibration, where you may also place orders. 

Customer website for calibration

Intercomparisons and skills testing are a common way of determining the performance of a laboratory. It is used by laboratories and companies to ensure technical competence and ensure the quality of measuring equipment and design.

Intercomparisons are a very effective tool for laboratories to show that they have good, accurate and quality assured measurement results. We offer intercomparisons in a number of different technology areas and also arrange courses within the subject.

We arrange comparisons between laboratories and provide the organization, execution and evaluation of calibrations or tests made on the same or similar objects or materials by two or more laboratories in accordance with predetermined conditions.

Competency testing can also be used to ensure measurement performance in a laboratory over time, as well as identifying areas of improvement. It is a good way to develop the expertise of laboratory personnel and to establish consistency between different laboratories.

The results of an intercomparison can be used to show that a company has a good technical basis when discussing business contacts as well as when developing laboratory measurement uncertainties.

An intercomparison measurement allows you to perform a measurement assignment with an instrument without knowing the instrument's performance or error in advance. The measurements are performed by the laboratory staff in the measurement context of the laboratory concerned. This is of great value because the results reveal relevant influences from the various parts of the laboratory's measurement system, such as the chosen measurement method, environment etc. The confidentiality of the competence test results is maintained by identifying each participant only with a unique code. The competency test organizer will not disclose confidential information to third parties. After listing for an intercomparison, your company will receive confirmation from the organizer.

Normally, it is up to each laboratory to plan when to participate in a comparison survey. However, an accredited laboratory must meet the requirements of ISO / IEC 17025 which prescribe participation in a number of quality assurance activities, including participation in comparative measurements. If there has been a major change in the operation of a laboratory, introduction of a new procedure, reference equipment etc., then participation in an intercomparison is normally recommended. Historically, it has been very difficult for laboratories in certain calibration and test areas to make these planned comparisons because there have been too few available times. RISE offers comparisons of a five-year plan where each laboratory can plan its activities for years to come.

Five-year Plan

All competency testing is planned and performed in accordance with a quality system that complies with ILAC G13: 200 "Guidelines for the Competence of Providers of Proficiency Testing Service" and which meets the requirements of ISO guide 43-1.

Variables

RISE cover comparisons within a wide range of measurement sizes, such as:

Electricity - Flow - Power - Length -  Torque - Optics - Temperature - Pressure - Vacuum - Volume

Commitments for participants in an intercomparison

• The application is binding and refunds must be sent to the organizer before the deadline stated in the information. If rebates are sent after this date, the organizer may charge a full fee.
• Reporting of results from the participants must be done according to the measurement instructions. If the results are presented in a different way, then the organizer of the intercomparison has the right to exclude these results from the final report.
• Any complaints or comments about the intercomparison should be sent directly to the organizer. It is then up to the organizer or a reference group for the intercomparison to decide whether this should be included in the report or not.
• The measurement and reporting schedule must be kept. If participants need more time, they should request this by contacting the organizer as soon as possible.

Report

See the respective intercomparison.

Pris anges vid respektive jämförelse. Pris för kundanpassade jämförelser ges vid offertförfrågan. 

ISO/IEC 17025

The national laboratory for length and dimensional metrology offers calibration of laser sources used in interferometry.

The national laboratories are responsible for maintaining the national reference standards for each measurement quantity and spreading metrological competence and traceability to industry and society at large. The national reference standards are the highest level of traceability in Sweden.

A calibration performed at a national laboratory fulfils all typical traceability and accreditation requirements that commonly exist in industry and society at large. 

Calibration of the object’s laser frequency is performed via heterodyne measurement against one of Sweden’s primary standards for optical frequency. The standards are Iodine-stabilized He-Ne lasers with a laser frequency in agreement with BIPMs recommended values for the realization of the metre in the mise en pratique.

The results from the calibration are:

• Measured vacuum wavelength
• Relative deviation from the specified vacuum wavelength
• Difference between longest and shortest measured wavelength
• Diagram showing the relative deviation of the vacuum wavelength from specified vacuum wavelength

Finally the optical power is measured and a system check of the object is performed against one of our own interferometers over a distance of 3 m.

The laser frequency calibration certificate is issued under the CIPM MRA.

The calibration results are reported in a digital calibration certificate in Swedish or English which states that the calibration was performed at a national laboratory.

When becoming a client you will also get access to our customer website for calibration, where you may also place orders. 

Customer website for calibration

Price on request.

If you are interested in calibrating environment sensors belonging to the laser system, please mention this when ordering the calibration.

The National Laboratory for Photometry and Radiometry offers calibration of any type of luminance meter or photometer.

The national laboratories are responsible for maintaining the national reference standards for each measurement quantity and  spreading metrological competens and traceability to industry and society at large. The national reference standards are the highest level of traceability in Sweden. 

A calibration performed at a national laboratory fullfils all typical traceability and accreditation requirements that commonly exist in industry and society at large. 

The calibration is performed according to existing international standards and recommendations. 

The calibration is performed against luminance source with CIE Standard Illuminant A (2856K) and can be performed at any luminance level from 0,01 cd/m² to 500000 cd/m². Instruments that measure luminance in foot-lamberts can also be calibrated. The standard service has a measurement uncertainty of 3% as a base but the measurement uncertainty can increase depending on the properties of the device under test as well as for luminance levels above 200000 cd/m². If a lower measurement uncertainty is required then that can be discussed as a speciality service.  

The calibration takes place at the laboratory for photometry and radiometry in Borås.

The calibration results are reported in a digital calibration certificate in Swedish or English which states that the calibration was performed at a national laboratory.

When becoming a client you will also get access to our customer website for calibration, where you may also place orders. 

Customer website for calibration

The National Laboratory for time and frequency offers calibration of time and frequence via GNSS.

The National Laboratories have the task to maintain the national references standards for each measurement quantity and to spread metrological competens and traceability to industry and society at large. The national reference standards are the highest level of traceability in Sweden.

A calibration performed at a National Laboratory fullfils all typical traceability and accreditation requirements that commonly exist in industry and society at large. 

For calibration of more accurate time and frequency standards, we offer on-site calibration using global navigation satellite systems, GNSS (e.g. GPS and Galileo) as an intermediate reference. This requires installation of equipment for reception and storage of data from the GNSS.

The method, known as GNSS Common View, is similar to that used by RISE to provide international traceability.

We can also verify and calibrate the time synchronising and positioning performance of different types of GNSS receivers. 

The method involves calibrating a frequency standard, clock or time scale (DUT) relative to UTC(SP) by means of simultaneous measurements of GPS satellite signals performed by both the customer and by RISE.  The use of common satellites eliminates many of the common measurement errors.  In addition, the changes that are observed in the time intervals [UTC(SP) – DUT] provide an estimate of the DUT frequency relative to UTC(SP).

All instrumentation needed (GNSS receiver, time interval counter, software, etc.) can be supplied and installed by RISE. For continuous monitoring over a longer period of time, equipment can be rented from RISE.

For continuous monitoring, the measured values registered by the customer are transferred automatically to RISE.  The calculation of the results are performed automatically by RISE with the results being sent to the customer by (for example) e-mail.  The results can also be provided through a webpage. How often this is done is agreed with the customer, but can in principle be done on a daily basis.  The accuracy of frequency measurement, averaged over a day, is better than ±1E-13, but does depend on the quality of the DUT.

Installation of instrumentation at the customer is needed.

The National Laboratory for time and frequency offers calibration of any type of stopwatches.

The National Laboratories have the task to maintain the national references standards for each measurement quantity and to spread metrological competens and traceability to industry and society at large. The national reference standards are the highest level of traceability in Sweden.

A calibration performed at a National Laboratory fullfils all typical traceability and accreditation requirements that commonly exist in industry and society at large.

The calibration is performed according to international standards and recommendations.

The calibration results are reported in a digital calibration certificate in Swedish or English which states that the calibration was performed at a National Laboratory.

Accredited calibration of antennas according to standard ANSI C63.5 (2017) in the frequency range 30 MHz-18 GHz.

To provide accredited antenna calibration in the frequency range 30 MHz-18 GHz for a multitude of different antenna types such as for example biconical antennas, horn antennas, dipole antennas, logperiodical antennas and hybrid antennas.

Accredited antenna calibration according to ANSI C63.5 is a requirement for antennas used in ANSI C63.4 testing.

The calibration of the antennas takes place on one or both of our calibration ranges. For antenna calibration in the frequency range 30 MHz-1 Ghz the calibration is done on our OATS "Maxwell" according to the internal method 4429. If the antenna is to be calibrated in the frequency range 1-18 Ghz the calibration is performed in our fully anechoic chamber "Hertz" according to the internal method 5594. Both internal methods are 3-antenna calibration techniques according to the SSM in ANSI C63.5 (2017).

Calibration certificate containing the antenna gain and antenna factor, control of the reflection coefficient of the antenna.

ANSI C63.5 (2017)

Tracible calibration of electrical field probes/field indicators/ field strength meters in the frequency range 10 kHz-18 GHz

To provide tracible calibration of electrical field probes/field indicators/field strength meters in the frequency range 10 kHz-18 GHz.

The calibration will provide a correction factor which can be used to improve the accuracy in the calibrated equipment.

The calibration of electrical field probes/field indicators/field strength meters takes place on one or both of our measurement ranges. For equipment used in the frequency range 10 kHz-50 MHz the calibration is conducted in our TEM cell. If the equipment is to be calibrated in the frequency range 50 MHz-18 GHz this takes place in our fully anechoic chamber "Hertz". The calibration is done according to internal methods, which are based on IEEE 1309-2013. All the calibrations are conducted by placing the equipment in a calculable electrical field and then recording the response of the equipment. The quota between the by the equipment displayed level and the applied field gives a correction factor that is unique for the specific equipment.

Calibration certificate containing the correction factors for the requested frequencies. The certificate is tracible to a NMI. 

The NMI offers tracible calibration of antennas in the frequency range 30 MHz - 18 GHz for a multitude of different antennas, as for example horn antennas, biconical antennas, dipole antennas. logperiodical antennas and hybrid antennas.

To provide tracible calibration of antennas in the frequency range 30 MHz-18 GHz.

The calibration of antennas takes Place on one or both of our measurement ranges. For antennas in the frequency range 30 MHz - 1 Ghz the calibration takes Place on our outdoor antenna test range (OATS) "Maxwell" according to our internal calibration method 4429, which is based on the SSM method in ANSI C63.5 (2017). For antenna calibration in the frequency range 1-18 GHz this will take place in our fully anechoic chamber "Hertz" according to internal method 2781 which is a reference antenna method with standard gain horn antennas as reference.

Calibration certifikate with antenna gain and antenna factor showing tracibility to a NMI.