Correction weather protection WP30-90/-150

The following correction data apply for the WP30 weather protection with either 90 mm or 150 mm windscreen.

Horizontal sound incidence (ambient noise)

Frequency [Hz]	200	250	315	400	500	630	800	1000
Correction [dB]	0.00	0.00	0.00	0.01	0.01	0.02	0.04	0.07
Frequency [Hz]	1060	1120	1180	1250	1320	1400	1500	1600
Correction [dB]	0.08	0.09	0.10	0.12	0.13	0.16	0.19	0.22
Frequency [Hz]	1700	1800	1900	2000	2120	2240	2360	2500
Correction [dB]	0.26	0.31	0.36	0.41	0.48	0.55	0.64	0.74
Frequency [Hz]	2650	2800	3000	3150	3350	3550	3750	4000
Correction [dB]	0.86	0.98	1.15	1.29	1.47	1.64	1.81	2.02
Frequency [Hz]	4250	4500	4750	5000	5300	5600	6000	6300
Correction [dB]	2.20	2.35	2.48	2.58	2.67	2.73	2.78	2.81
Frequency [Hz]	6700	7100	7560	8000	8500	9000	9500	10000
Correction [dB]	2.86	2.94	3.05	3.24	3.43	3.60	3.72	3.79
Frequency [Hz]	10600	11200	11800	12500	13200	14000	15000	16000
Correction [dB]	3.82	3.86	3.96	4.22	4.62	5.15	5.79	6.26
Frequency [Hz]	17000	18000	19000	20000
Correction [dB]	6.50	6.57	6.55	6.50

Measurement uncertainty 63 Hz – 4 kHz ±0.2 dB

Measurement uncertainty 4 kHz – 20 kHz ±0.3 dB

Vertical sound incidence (e.g aircraft noise)

For 0° vertical sound incidences (e.g. aircraft noise during overflight) no correction is needed.