Mitsubishi Electronics MUZ-GB50VA service manual Noise Criteria Curves, Band Octave

4

NOISE CRITERIA CURVES

MUZ-GB50VA

FAN SPEED FUNCTION	SPL(dB(A))	LINE
COOLING	52
High
HEATING	55

Test conditions,

Cooling : Dry-bulb temperature 35: Wet-bulb temperature 24:

Heating : Dry-bulb temperature 7: Wet-bulb temperature 6:

	90
0dB=20∝Pa	80
	70								NC-70
LEVEL,
	60
PRESSURE									NC-60
	50
									NC-50
SOUND	40
									NC-40
BAND	30
OCTAVE									NC-30
	20	APPROXIMATE
		THRESHOLD OF
		HEARING FOR							NC-20
		CONTINUOUS
	10	NOISE
		63	125	250	500	1000	2000	4000	8000

OUTDOOR UNIT

1m

MICROPHONE

BAND CENTER FREQUENCIES, Hz

5