Sound Level Meter
EPTIS ID: 941623
PT scheme / program name: Acoustic calibration
PT item type: Sound Level Meter
Sample / item: acoustical measuring equipment
Model: Bruel & Kjaer 2238 Mediator
Reference Laboratory: ISO IEC 17025 accreditated laboratory or NMI
Measurement Points:
- Self generated noise, range (0 – 80) dB, Mode Leq
- Acoustical signal tests of frequency weighting, range (50 – 130) dB, Frequency Weighting setting C, Time Weighting response Slow
- Electrical signal tests of frequency weightings, range (50 – 130) dB
- Frequency and time weightings at 1 kHz, range (50 – 130) dB
- Level linearity on the reference level range, range (50 – 130) dB, Input Frequency 1 kHz SLM, Measuring Mode SPL
- Level linearity including the level range control, Input Frequency 1 kHz SLM, Measuring Mode SPL
- Toneburst response, range (50 – 130) dB
- C-weighted peak sound level, range: (60 – 140) dB
- Overload indication, Range: (60 – 140) dB, SLM Measuring Mode LAEq
Reference Laboratory CMC:
- Sound calibrators , Sound pressure level : 84 dB (reference: 20 µPa)
Sound calibrator, single frequency 1 kHz 0.26 dB - Sound calibrators , Sound pressure level : 124 dB (reference: 20 µPa)
Pistonphone, single frequency 250 Hz 0.12 dB - Sound measuring instruments , Sound pressure response level : 94 dB (reference: 20 µPa) Sound level meter 0.30 dB
- Sound calibrators , Sound pressure level : 94 dB (reference: 20 µPa) to 114 dB (reference: 20 µPa) Sound calibrator, single frequency 1 kHz 0.13 dB
Note: Indications regarding organizational methods, presentation and sending of results will be reported in the PT participation protocol
Scheduled start date for PT: every year in December
Payment: bank transfer