The National Laboratory for pressure and vacuum performs calibration of pressure balances. This is the most accurate and complex calibration performed and is done according to current standards and guides.

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 pressure balance to be calibrated is connected to the National Labratory's reference pressure balance. The calibration takes place at six to eight pressure points over the balance pressure range. At each level, the balances are balanced against each other, whereby a reference pressure is obtained and used for calculation of results.

There are two methods used in pressure balance calibration. The first method gives a result in form of correction terms at certain pressure levels as well as associated measurement uncertainties. According to this method, the weights of the object does not need to be calibrated before the pressure balance calibration but certiain weight compositions are used to set a nominal pressure. This means that the calibration results only covers the specifik calibrated pressure levels.

The second method involves weighing the weights and piston / cylinder combination at the National Laboratory for mass. The result from that calibration is then used to calculate the effective area of ​​the piston / cylinder combination by means of the reference pressure. This means that the pressure balance is calibrated so that the customer receives sufficient information to be able to measure pressure over the entire pressure balance interval, not just the pressure levels covered in the calibration certificate.

Results are reported in a digital calibration certificate in Swedish or English. The result is presented as correction terms with associated measurement uncertainties or as effective area with measurement uncertainties, depending on the method used for the calibration. The certificate also contains information that the calibration was performed at a National Laboratory.

All pressure balances to be calibrated must be cleaned before delivery to the national measurement site.

The pressure and vacuum National Laboratory performs calibrations of all types of vacuum gauges. Calibration at the National Laboratory always guarantees the highest possible traceability in the measurements performed.

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 vacuum gauge is connected to the national Laboratory's standards and the calibration is performed at agreed upon pressure levels. Calibration of vacuum meters always takes place at increasing pressures. The National Laboratory performs calibrations of vacuum gauges from 5·10^-6 Pa and upward.

Since the National Laboratory is the highest calibration body in Sweden, calibrations are performed here with the highest possible traceability.

The pressure media used for calibration of vacuum gauges at the National Laboratory site is nitrogen gas.

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.

All objects handled by the national measurement site for pressure and vacuum have purity requirements. All items calibrated must be cleaned prior to arrival.

The National Laboratory for Volume and Flow offers calibration of different types of flowmeters.

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 fullfils all typical traceability and accreditation requirements that commonly exist in industry and society at large. 

Each type of meter requires its own calibration method and equipment. The National Laboratory för Volume and Flow has about ten measurement equipments to be able to calibrate different types of flowmeters.

Calibration of the entire signal chain

When calibrating it is impotant that the output signal (for example the pulse, the flow or the current display device) that are used normally, also is the one that is being calibrated. Output signals can go through separate amplifiers or converters and they can have different time constants and different zero suppression. Because of that, it is very important that the whole signal chain is calibrated. By calibrating, the error of the flowmeter's display can be determined.

Different flowmeters requires different calibration methods

Each type of meter requires its own calibration method and equipment. Questions regarding the choice of method and equipment include the following:

• type of meter (resolution, type of output signal, integration time, etc.)
• type of liquid (density, viscosity, aggressiveness, temperature, pressure, etc)
• mode of use (continuous operation, dosing volume, installation, etc.)
• accuracy (which measurement uncertainty to be accepted)

We have about ten measurement equipments to be able to calibrate differnet types of flowmeters

To be able to meet different requirements of calibration, we have calibration resources in the form of about ten different types of measuring equipment, several of which are fully or partly self-developed. As a national laboratory, RISE is responsible for the national standards, which means that our measurements are directly traceable to these standards.

Measuring range overview

Liquid                             Min-Max. flow rate (m³/h)              Temp. (⁰C)

Water                                                    0,03-720                                  20... 90

Water                                                    0,006-24                                  10... 90

Exxsol D40 ("Gasoline")              0,00006-150                          ca 20

Exxsol D120 ("Diesel")               0,0006-300                            ca 20

Motor-/hydraulic oil                     0,03-25                                      20... 60

Oil, spirit, glycol etc.                     0,0006-1,2                             ca 20   

Note that the values in the table are approximate.

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.

The National Laboratory for pressure and vacuum performs gauge and absolute mode calibrations on all types of pressure transducers. Calibration at the national measurement site always guarantees the highest possible traceability in the measurements performed.

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 object is connected to the National Laboratory's reference standards and the calibration is carried out in pressure points evenly distributed over the pressure range. The upper range for calibrations is 500 MPa.

Since the National Laboratory is the highest calibration body in Sweden, calibrations are performed here with the highest possible traceability.

The pressure media used at the National Laboratory are nitrogen gas, air, oil and water.

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.

All objects handled by the National Laboratory for pressure and vacuum have a purity requirement. All items calibrated must be cleaned before shipment.

The National Laboratory for Volume and Flow offers calibration of flow measurement in field

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. 

Sometimes best results are achieved if you can calibrate on site at customers as you do not need to move the meter or container from its regular location. The calibration can then take into account sources of error as, such as installation, flow profile, signal processing and peripherals. Calibration on site at customers also implies that the calibration is carried out with the right fluid and that interruptions in the customer’s production can be completely avoided.

The National Laboratory for Volume and Flow holds a high level of competence, which is required to perform accurate calibrations in the field. For smaller meters, mobile volume normals can be used. For larger meters, master meters or mobile calibration equipment are used, so-called provers that have a measurement uncertainty less than ±0.1%.

Meters for most media can be tested, such as water, gasoline, oil and condensed gas (LPG). Our equipment handle flow rates up to 26,000 liters / minute and with a average temperature up to +120 degrees.

Calibration of two meters in series can be done simultaneously and measurement results can be correlated. In addition, the measuring equipment can be used within a classified area (zone 1) regarding a potentially explosive environment.

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.

The National Laboratory for Volume and Flow offers calibration of different kinds of volume vessels, such as volume normals, pipettes and tanks.

The national laboratories have 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. 

The appropriate calibration method is selected in consideration of of the size, design and use of the volume vessel. It often involves gravimetric calibration for smaller volumes, i.e. weighing a liquid with known density. Larger volumes are normally calibrated volumetrically, e.g. by filling from a volume standard with a known volume.

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.

The National Laboratory for Length and Dimensional Metrology offers calibration of measuring wheels.

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. 

We offer calibration of measuring wheels which are used in several areas and are divided into two main categories:

• Measuring wheels which are rolled on the ground to measure for example football fields or roadwork.
• Measuring wheels which are used in industry to measure the length of cables or fabrics

Measuring wheels come in various sizes (often 500 mm in diameter and 10 to 80 mm in width) with wear surface in different materials, most often aluminum or rubber. If the measuring wheel being calibrated has a counting device attached this is also checked at the time of calibration.

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.

Price at request.

The National Laboratory for Photometry and Radiometry offers calibration of optical materials.

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 national laboratory calibrates a wide range of optical materials. The calibrations involve the following measurement quantities: 

• Transmittance
• Aborbance or optical dampening
• Reflectance
• Wavelength
• Index or refraction

Typical objects that are calibrated include: 

• Neutral density filters
• Smoke meter filters
• Band-pass filters
• Interference filters
• Standards for absorbance, transmittance, reflectance or wavelength
• Cuvettes
• Optical liquids
• Colour standards
• Mirrors

Objects are calibrated using a spectrophotometer in a range of 200 nm to 2500 nm. 

Index of refraction is calibrated using an Abbe refractometer. 

The calibrations 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 Photometry and Radiometry offers calibration of glossmeters and gloss reference standards.

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. 

RISE performs calibrations of gloss in accordance with ISO standard 2813 (or ASTMD523). 

Gloss reference standards are calibrated using a glossmeter that has been calibrated against RISE high gloss standard. Calibration of glossmeters are done by direct measurement against RISE high gloss standard. 

Calibration of medium gloss is calibrated in comparison with a high gloss standard as measured with a glossmeter. The transference to medium gloss increases the measurement uncertainty. The measurement uncertainty is ±1 GU for high gloss and ±2 GU for medium gloss. The measurement uncertainty also depends on the device under test. 

The calibrations 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

Determination of mass for weights according to OIML's system in accuracy class E1, E2, F1, F2, M1 and M2

The national laboratories have 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.

Weight calibration ensures traceable calibration in everything from medical technology to food and environmental management. We offer calibration with history and stability monitoring for all sizes of weights from 1 mg to 5000 kg.

We help you to secure your measurements / checks by assessing that your reference weights fulfills the required class and stability.

We can also adjust weights to meet tolerance requirements in OIML class F2, M1 and M2.

Calibration and tolerance check according to OIML R111

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

Customer website RISE Calibration is our customer website on the Internet that gives you full control over your measuring instruments. Log in to your own page and see your metering register, calibration status, calibration history and calibration certificate for each measuring instrument.

5 to 10 working days depending on accuracy class