Montréal, Quebec H3A 3C2
Telephone: 514-288-1551
Fax: 514-288-9632
Email: Cherifa.Lakhal-Ayat@irsst.qc.ca
- All interested parties
- Acoustic and vibration
- Flow
- Standards Council of Canada (SCC)
- SCC file number: 15162
- First issued 1994-09-23 for calibration
- Issue 12.0e 2024-11-22
This CLAS Certificate is published by the CLAS service of the National Research Council of Canada (NRC) in cooperation with the laboratory accreditation program of the accreditation body. The accreditation body recognizes the capability of the named laboratory for being able to perform calibrations as per the listed Calibration and Measurement Capabilities with metrological traceability to the International System of Units (SI) or to standards acceptable to CLAS. See supplementary notes.
Acoustic and vibration
Acoustic calibrators
For the calibration of acoustic calibrators, Class 1, using IRSST's work instruction I-ACO-005.
| Measured Quantity & Range or Instrument | Expanded Measurement Uncertainty | Type of Service |
|---|---|---|
|
Sound pressure level, 90 dB to 124 dB (ref: 20 µPa), at 250 Hz or 1000 Hz |
0.14 dB |
II |
|
Frequency 250 Hz, 1000 Hz |
0.3 % |
II |
Sound level meters
For the calibration of class 1 sound level meters in accordance with international standard IEC 61672-3 (2006-10) Ed. 1.0 for periodic tests.
| Measured Quantity & Range or Instrument | Expanded Measurement Uncertainty | Type of Service |
|---|---|---|
|
Indication of reference level at the calibration check SPL frequency |
0.2 dB |
II |
Acoustical Frequency weightings A, C and Z
For the calibration of class 1 sound level meters in accordance with international standard IEC 61672-3 (2006-10) Ed. 1.0 for periodic tests.
| Measured Quantity & Range or Instrument | Expanded Measurement Uncertainty | Type of Service |
|---|---|---|
|
125 Hz to 1.25 kHz |
0.4 dB |
II |
|
>1.25 kHz to 10 kHz |
0.5 dB |
II |
|
>10 kHz to 20 kHz |
0.8 dB |
II |
Electrical Frequency weightings A, C and Z
For the calibration of class 1 sound level meters in accordance with international standard IEC 61672-3 (2006-10) Ed. 1.0 for periodic tests.
| Measured Quantity & Range or Instrument | Expanded Measurement Uncertainty | Type of Service |
|---|---|---|
|
63 Hz to 1.25 kHz |
0.3 dB |
II |
|
>1.25 kHz to 10 kHz |
0.4 dB |
II |
|
>10 kHz to 16 kHz |
0.5 dB |
II |
|
Frequency and time weightings at 1 kHz |
0.2 dB |
II |
Level linearity at 8 kHz
For the calibration of class 1 sound level meters in accordance with international standard IEC 61672-3 (2006-10) Ed. 1.0 for periodic tests.
| Measured Quantity & Range or Instrument | Expanded Measurement Uncertainty | Type of Service |
|---|---|---|
|
25 dBA to 39 dBA |
0.3 dB |
II |
|
>39 dBA to 143 dBA |
0.2 dB |
II |
Level linearity at 1 kHz
For the calibration of class 1 sound level meters in accordance with international standard IEC 61672-3 (2006-10) Ed. 1.0 for periodic tests.
| Measured Quantity & Range or Instrument | Expanded Measurement Uncertainty | Type of Service |
|---|---|---|
|
including the level range control |
0.2 dB |
II |
|
Response to a 4 kHz |
0.2 dB |
II |
|
Peak C sound levels |
0.2 dB |
II |
|
Overload indication |
0.3 dB |
II |
Flow
Gas Flow
For the calibration of flowmeter using the instruction I-DEBIT-001.
| Measured Quantity & Range or Instrument | Expanded Measurement Uncertainty | Type of Service |
|---|---|---|
|
0.05 slpm to 5 slpm |
4.0 % |
II |