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Accreditation scope for

CAL 053

Preqas AS

Postboks 134
1252 Oslo

Telephone: +47 63 87 77 99
E-mail: preqas@preqas.no
Internet: http://www.preqas.no
The laboratory meets the requirements in

NS-EN ISO/IEC 17025:2017




Accreditation includes:
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Calibration and Measurement Capabilities (CMC)

The administrative / geographical unit:
Preqas AS
Rosenholmveien 12
1252 Oslo


Field testing laboratory K05 Mechanical quantities

Pressure: Brake pressure sensor

Range
Uncertainty (k=2)
Range
1,00 - 4,00 bar
Uncertainty (k=2)
± 0,08 bar
Range
4,01-12,00 bar
Uncertainty (k=2)
± 0,09 bar

Remarks/ref. to internal procedure: Calibration of manometers, according to internal method 4.1.2.

Force: Brake tester, dead weight

Range
Uncertainty (k=2)
Range
1 - 8 kN
Uncertainty (k=2)
± 0,050 kN ved 2 kN
Personbil
Range
Uncertainty (k=2)
± 0,050 kN ved 4 kN
Personbil
Range
Uncertainty (k=2)
± 0,050 kN ved 6 kN
Personbil
Range
Uncertainty (k=2)
± 0,060 kN ved 8 kN
Personbil

Remarks/ref. to internal procedure: Stepwise calibration with weight and barbell mounted in brake tester and values is read out from the brake tester, according to internal method 4.1.1.

Force: Brake tester, electronic transducer

Range
Uncertainty (k=2)
Range
1 - 40 kN
Uncertainty (k=2)
± 0,070 kN ved 1 kN
Personbil og lastebil
Range
Uncertainty (k=2)
± 0,080 kN ved 10 kN
Personbil og lastebil
Range
Uncertainty (k=2)
± 0,400 kN ved 40 kN
Lastebil

Remarks/ref. to internal procedure: Stepwise calibration with load cell attached to brake tester. Force is applied on the object, and values is read out from the brake tester, according to internal method 4.1.5. Range 0-40 kN for lorries is calculated from applied force and measured values using a 0-20 kN load cell.

Deceleration measurement (analog instruments)

Range
Uncertainty (k=2)
Range
1,0 - 90,0 %g
Uncertainty (k=2)
± 1,2 %g ved 20 %g
Range
Uncertainty (k=2)
± 1,5 %g ved 45 %g
Range
Uncertainty (k=2)
± 1,6 %g ved 60 %g
Range
Uncertainty (k=2)
± 1,8 %g ved 75 %g

Remarks/ref. to internal procedure: Calibration of analog deceleration instruments, according to internal method 4.1.7.
Permanent facility K05 Mechanical quantities

Deceleration measurement (analog instruments)

Range
Uncertainty (k=2)
Range
1,0 - 90,0 %g
Uncertainty (k=2)
± 1,2 %g ved 20 %g
Range
Uncertainty (k=2)
± 1,5 %g ved 45 %g
Range
Uncertainty (k=2)
± 1,6 %g ved 60 %g
Range
Uncertainty (k=2)
± 1,8 %g ved 75 %g

Remarks/ref. to internal procedure: Calibration of analog deceleration instruments, according to internal method 4.1.7.

Deceleration measurement (digital instruments)

Range
Uncertainty (k=2)
Range
1,0 - 9,82 m/s²
Uncertainty (k=2)
± 0,14 m/s²
Range
1,0 - 100 %g
Uncertainty (k=2)
± 1,6 %g

Remarks/ref. to internal procedure: Calibration of digital deceleration instruments, according to internal method 4.1.7.
Field testing laboratory K07 Fluid quantities

Exhaust gases analyser: Hydrocarbons

Range
Uncertainty (k=2)
Range
200 - 500 vol-ppm
Uncertainty (k=2)
± 10 vol-ppm
Range
501 - 1000 vol-ppm
Uncertainty (k=2)
± 16 vol-ppm
Range
1001 - 1750 vol-ppm
Uncertainty (k=2)
± 26 vol-ppm

Remarks/ref. to internal procedure: Calibration of exhaust gas analysers with reference gases of known compositions, according to internal method 4.1.3. Two different reference gases are applied, one with low concentrations, and one with high concentrations. Propane is used as reference gas, which is converted to hydrocarbons by application of an instrument-dependent PEF value.

Exhaust gases analyser: Carbon monoxide (CO)

Range
Uncertainty (k=2)
Range
0,7 vol% til 5,4 vol%
Uncertainty (k=2)
± 0,04 vol% ved 0,8 vol%
Range
Uncertainty (k=2)
± 0,12 vol% ved 5,2 vol%

Remarks/ref. to internal procedure: Calibration of exhaust gas analysers with reference gases of known compositions, according to internal method 4.1.3. Two different reference gases are applied, one with low concentrations, and one with high concentrations.

Exhaust gases analyser: Carbon dioxide (CO2)

Range
Uncertainty (k=2)
Range
3,0 vol% til 14,5 vol%
Uncertainty (k=2)
± 0,17 vol% ved 3,5 vol%
Range
Uncertainty (k=2)
± 0,37 vol% ved 14 vol%

Remarks/ref. to internal procedure: Calibration of exhaust gas analysers with reference gases of known compositions, according to internal method 4.1.3. Two different reference gases are applied, one with low concentrations, and one with high concentrations.
Permanent facility K07 Fluid quantities

Exhaust gases analyser: Hydrocarbons

Range
Uncertainty (k=2)
Range
200 - 500 vol-ppm
Uncertainty (k=2)
± 10 vol-ppm
Range
501 - 1000 vol-ppm
Uncertainty (k=2)
± 16 vol-ppm
Range
1001 - 1750 vol-ppm
Uncertainty (k=2)
± 26 vol-ppm

Remarks/ref. to internal procedure: Calibration of exhaust gas analysers with reference gases of known compositions, according to internal method 4.1.3. Two different reference gases are applied, one with low concentrations, and one with high concentrations. Propane is used as reference gas, which is converted to hydrocarbons by application of an instrument-dependent PEF value.

Exhaust gases analyser: Carbon monoxide (CO)

Range
Uncertainty (k=2)
Range
0,7 vol% til 5,4 vol%
Uncertainty (k=2)
± 0,04 vol% ved 0,8 vol%
Range
Uncertainty (k=2)
± 0,12 vol% ved 5,2 vol%

Remarks/ref. to internal procedure: Calibration of exhaust gas analysers with reference gases of known compositions, according to internal method 4.1.3. Two different reference gases are applied, one with low concentrations, and one with high concentrations.

Exhaust gases analyser: Carbon dioxide (CO2)

Range
Uncertainty (k=2)
Range
3,0 vol% til 14,5 vol%
Uncertainty (k=2)
± 0,17 vol% ved 3,5 vol%
Range
Uncertainty (k=2)
± 0,37 vol% ved 14 vol%

Remarks/ref. to internal procedure: Calibration of exhaust gas analysers with reference gases of known compositions, according to internal method 4.1.3. Two different reference gases are applied, one with low concentrations, and one with high concentrations.
Field testing laboratory K08 Optical quantities

Diesel smoke meter: Opacity

Range
Uncertainty (k=2)
Range
10,0 - 92,0% opasitet
Uncertainty (k=2)
± 1,5% opasitet

Remarks/ref. to internal procedure: Calibration with two or more filters, according to internal method 4.1.4.

Diesel smoke meter: K-value

Range
Uncertainty (k=2)
Range
0,07 m-1 til 5,80 m-1
Uncertainty (k=2)
± 0,08 m-1

Remarks/ref. to internal procedure: Calibration with two or more filters, according to internal method 4.1.4.

Headlamp beam tester

Range
Uncertainty (k=2)
Range
0 - 20 mm/m (0-2%) nedvinkling
Uncertainty (k=2)
± 2,1 mm/m (0,21% nedvinkling)
Range
20,1 - 40 mm/m (2-4%) nedvinkling
Uncertainty (k=2)
± 2,4 mm/m (0,24% nedvinkling)

Remarks/ref. to internal procedure: Calibration of headlamp beam tester with calibrated references, according to internal method 4.1.6.
Permanent facility K08 Optical quantities

Diesel smoke meter: Opacity

Range
Uncertainty (k=2)
Range
10,0 - 92,0% opasitet
Uncertainty (k=2)
± 1,5% opasitet

Remarks/ref. to internal procedure: Calibration with two or more filters, according to internal method 4.1.4.

Diesel smoke meter: K-value

Range
Uncertainty (k=2)
Range
0,07 m-1 til 5,80 m-1
Uncertainty (k=2)
± 0,08 m-1

Remarks/ref. to internal procedure: Calibration with two or more filters, according to internal method 4.1.4.

Headlamp beam tester

Range
Uncertainty (k=2)
Range
0 - 20 mm/m (0-2%) nedvinkling
Uncertainty (k=2)
± 2,1 mm/m (0,21% nedvinkling)
Range
20,1 - 40 mm/m (2-4%) nedvinkling
Uncertainty (k=2)
± 2,4 mm/m (0,24% nedvinkling)

Remarks/ref. to internal procedure: Calibration of headlamp beam tester with calibrated references, according to internal method 4.1.6.