By calibrating GNSS receiver equipment, time and frequency obtained from GNSS (e.g. GPS and Galileo) become both traceable and accurate, which is a requirement in many industries. RISE calibrates equipment both in our laboratory and on-site at the customer, in accordance with the CIPM-MRA, fulfilling global requirements for traceability.

 Time from global navigation satellite systems (GNSS, such as the American GPS and the European Galileo) is easily accessible and precise. Signals in space rarely deviate more than a few nanoseconds from the global time scale UTC.

On the ground, however, the situation is different. Several factors affect the accuracy of time from when it leaves the satellite constellation until it reaches the point of use. Delays in the atmosphere and ionosphere can to some extent be handled at the system level, but local effects—such as signal reflections in the receiver antenna’s surroundings and systematic delays in the antenna, antenna cable, receiver, and the user’s own time distribution system—must be managed through local comparisons against an accurate reference, i.e. calibration. A typical delay in cabling is 5 ns per meter of signal cable.

Frequency transfer via GNSS is less sensitive to local delays, but the equipment must still be calibrated to be considered traceable.
To obtain time from GNSS, a user may employ a GNSS-disciplined oscillator that generates a local signal synchronized and syntonized to a GNSS time scale. Alternatively, the user may connect a time source to a GNSS receiver for time transfer, which compares the user’s time against GNSS time.

The need for calibration depends on the requirements of the specific application. Regular calibration of individual installations is recommended when the requirements for relative frequency accuracy are better than 10⁻¹² over a day. For time, regular calibration is recommended when accuracy requirements are better than 100 ns.

RISE offers calibration of GNSS-disciplined oscillators and GNSS receivers intended for timekeeping. Calibration can be performed either at the customer’s site or in RISE laboratories, depending on the customer’s needs and the specific conditions of the installation.

Delivery is carried out according to agreement with the customer.

RISE verification services cover subsequent verification and calibration for virtually all retail scales, checkweighers, and other types of weighing instruments, directly on-site at your premises.

Through independent subsequent verification and calibration, you can trust that your retail scales, checkweighers, and other weighing instruments operate as intended. Subsequent verification also ensures that you comply with legal requirements as well as the requirements of your internal quality management system.

We operate throughout Sweden, from Malmö in the south to Luleå in the north, offering accredited verification and calibration services on-site across the country. Our services are flexible and can be tailored to your needs. We can also draw on the combined expertise of RISE to create a comprehensive solution that meets your requirements.

Our customer website gives you full control over the status and history of your equipment.

Performed on site at customer according to agreement or contract.

ISO/IEC 17020

ISO/IEC 17025.

We can calibrate PMU (Phase Measurement Unit).

PMUs measure quantities such as voltage, current, harmonics, frequency, and power against a common time reference, which means that measurements can be compared between substations in real time. This is valuable as it can be used for stability monitoring, faster analysis, and more efficient utilization of resources in the power grid. For these measurements to serve as a basis for decision-making, amplitude, phase angle, and frequency must be reported correctly; therefore, regular calibration is essential.

We calibrate Total Vector Error (TVE), Frequency Error (FE) and Rate of Frequency Error (RFE). The uncertainty of TVE is 0.04%

We provide calibration certificates in Swedish or English. You can download the certificate directly from website for calibration and receive all other information that you need regarding your measurement system. Please contact us if you have any questions or to discuss your needs. 

IEEE C37.118.1-2011

IEC/IEEE 60255-118-1:2018

Regular calibration of conductivity meters ensures that electrical conductivity measurements are accurate and reliable. By comparing instrument readings with known standard solutions at specific temperatures, accurate results are ensured for all applications.

Low Conductivity Calibrations: 
Calibrating conductivity meters at low ranges, especially below 10 µS/cm, can be challenging due to atmospheric contaminants. Our innovative, internally developed method (SP2967) and custom-designed flow system ensure reliable calibration with exceptional precision and accuracy.

High Conductivity Calibrations: 
High conductivity calibrations require precise control of solutions and temperatures over a wide range of values. Our internally developed method (SP3489) assures calibration with exceptional precision and accuracy.

On-demand Preparation of Conductivity Solutions: 
We can provide conductivity solutions for your daily control purposes, prepared according to customer needs.

Our methods are based on IUPAC guidelines, OIML Recommendations, and accredited according to ISO/IEC 17025.

Report in Swedish or English.

It depends on the degree of complexity.

Internal methods.

SP2967

SP3489

With ‘Fröken Ur,’ (Miss Time) you get the correct Swedish time read directly over the phone. You can reach 'Fröken Ur', from Sweden, at the phone number 90 510. It costs the same as a regular phone call.

'Fröken Ur’ has been a reliable source of accurate Swedish local time for over 90 years. The service is aimed at both the general public and professional users who need access to accurate time and frequency.

You can reach the service from Sweden at the phone number 90 510. From abroad, you can reach the service via +46 33 90 510.

The current Swedish local time is announced every ten seconds, followed by a beep for precise time indication. The date and year are announced once per minute. The call is terminated after 90 seconds.

The service is directly connected to the Swedish official time scale UTC(SP), which is maintained by RISE using atomic clocks

The service can be considered an acoustic 0.1 PPS signal (PPS = pulse per second) with interleaved time indication. The time indicated is based on UTC(SP), which is traceable to UTC and can be used for, for example, calibration of stopwatches. Note that there may be requirements for a user method that describes execution and measurement uncertainty calculation approved by the supervisory authority or equivalent, and that the end user is responsible for this. Calibration against 'Fröken Ur' results in higher measurement uncertainty than equivalent calibration performed in the national metrology institute’s calibration lab.

Any delay and variance in the time indication are dominated by effects from the telephone network. These effects are beyond RISE’s control and should be considered by the end user in cases where these uncertainties may be significant for the application.

The service is sometimes used for marketing purposes for RISE. This means that the spoken messages may periodically differ from the normal ones. Neither the functionality of the service nor the accuracy of the time indication is affected by this

Instant, 24/7.

Free of charge. Telephone call costs may apply.

We provide accredited calibration services for your laboratory or industrial scales. We meet your needs for accredited and traceable calibrations of instruments used directly in production. The calibration is performed on-site at your facility to minimize disruption to your operations.

We offer fast and flexible calibration services designed to minimize the impact on your business. Calibration of your scales is carried out on-site using our mobile equipment.

For calibrations outside the areas we cover, or where stricter measurement uncertainty requirements apply, we are happy to connect you with the national metrology institute, which is also part of the RISE organization. This allows us to offer a complete calibration resource with access to RISE’s combined metrological expertise, tailored to all conceivable needs and requirements.

As an accredited calibration laboratory, we work with methods that have been reviewed and approved by Swedac.

Calibrations are carried out at our customers’ premises.

By Agreement with the Customer.

Calibration blocks, or moisture content blocks, are used to check moisture content meters.

The blocks are used to check the moisture content meter when measuring in pine and spruce. A moisture content meter is suitably checked every six weeks against the block. The block in turn should be checked at intervals of about 1-2 years. RISE provides blocks to all companies that need to check their moisture content meters.

The blocks are checked on RISE with calibrated resistance meters.

Proof of inspection

The National Laboratory for Length and Dimensional Metrology offers calibration and measurements of objects in a coordinate measuring machine.

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. 

As industrial products rise in complexity the reference objects needed follow the same trend. This means that everything from small holes with dimensions in the µm-level to custom made standards with complex form need to be measured with metrological traceability and low measurement uncertainty. This is not always achievable in traditional measuring machines.

The National Laboratory for Length and Dimensional Metrology is in possession of a coordinate measuring machine (CMM) for this purpose. Our CMM is equipped with a multisensory system capable of both optical and tactile measurements. This enables precise geometry measurements in our laboratory of both hard and soft materials.

Which approach is suitable for measuring is unique for each objects and mainly depend on the quality of the object in question and it’s intended use. This also means that the measurement uncertainty that is achievable is unique for the object, but in general measurement result in an expanded measurement uncertainty on the µm-level

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

Price on request.

Schematics, photos, files and detailed information of the object and measurands of interest are to be submitted in the request.

We provide accredited calibration of laboratory sieves according to ISO 3310-1 (metal wire cloth sieves) and ISO 3310-2 (perforated metal plate sieves). The calibration is carried out in our accredited laboratory in Borås, Sweden.

The calibration illustrates whether your sieves reach the set requirements according to  ISO 3310-1 and ISO 3310-2 or not.

The calibration is carried out according to ISO 3310-1 and ISO 3310-2.

Calibration certificate according to method is obtained.

To order, please contact RISE in advance through the contact form. When ordering, please fill in the ordering form and enclose this to your order/shipment.

See general and special terms and conditions applying to projects and accredited assignments Terms and conditions | RISE.

Delivery time is ca 3 weeks from the arrival of the sieves to RISE sieve calibration laboratory, Borås. Delivery time can only be guaranteed after agreed order/date of calibration. If the calibration service is ordered well in advance, the delivery time might be significantly shortened.

If possible, the sieves are cleaned before they are sent in for calibration (cleaning costs will be added if necessary). Make sure the sieves are well packed and protected before shipping. Please fill in the ordering form for easier/more correct management of the calibration commission.

ISO 3310-1

ISO 3310-2

The field-calibration department is a complement to RISE National Laboratories and contributes to the effective calibration services offered by RISE. The field-calibration resources are primarely intended to meet the need of accredited and traceable calibrations of instruments, which are used directly in production.

With the close co-operation between the National Laboratories and the field-calibration, an unique and complete calibration resource is established, which has access to all of RISE expertise concerning calibration. Our mobile measurement equipment gives us the possibility to perform most of our measurements, not only in the laboratory in Borås, but also directly at our customers facilities. The field-calibration department is accredited within five different technical areas. The results of our measurements are always documented in reports, with stated traceability and measurement uncertainty. We are also always pleased to assist with advice in the areas of calibration, traceability and quality systems.

RISE field-calibration department offers traceable and ISO/IEC 17025 accredited calibration of gauges and transducers in a range of disciplines including torque, force, pressure/vacuum and mass/weight. We are vendor independent and able to support most brands and instrument types.

As a part of the National Metrology Institute (NMI) and accredited measurement sites, we work with methods reviewed and approved by Swedac. Calibrations are performed both in laboratories and, in certain areas, even on-site at our customers.

Customer website Calibration (KWP) is our customer website, that gives you full control over your measuring devices. Log in to your own site and see your measurement record, calibration status, calibration history and calibration certificate for each object.

Customer Website Calibration

Normally within five working days after the agreed start date for the assignment.