HS. series

Sound power and sound pressure levels according to application range

The measurements were taken with the refrigerant R22 at an operating frequency of 50 Hz.
The calculated sound pressure level refers to free field conditions with hemispherical sound propagation at a distance of 1 m.
The tolerance for all specifications is +/- 2 dB(A).
For the measured quantities and their units: Introduction

HSK.

Sound power and sound pressure levels for compressors HSK., air conditioning application

Compressor

Sound power level in dB(A)

Sound pressure level in dB(A)

HSK5343-30

78.0

70.0

HSK5353-35

78.0

70.0

HSK5363-40

78.5

70.5

HSK6451-50

82.0

74.0

HSK6461-60

83.0

75.0

HSK7451-70

82.0

74.0

HSK7461-80

82.5

74.5

HSK7471-90

83.0

75.0

HSN.

Sound power and sound pressure levels for compressors HSN., low temperature application

Compressor

Sound power level in dB(A)

Sound pressure level in dB(A)

HSN5343-20

78.5

70.5

HSN5353-25

78.5

70.5

HSN5363-30

80.0

72.0

HSN6451-40

82.5

74.5

HSN6461-50

83.5

75.5

HSN7451-60

82.5

74.5

HSN7461-70

83.0

75.0

HSN7471-75

83.5

75.5

Sound power level (one-third octave band) and sound pressure level

The measurements were taken with the refrigerant R404A at an operating frequency of 50 Hz.
The calculated sound pressure level refers to free field conditions with hemispherical sound propagation at a distance of 1 m.
The tolerance for all specifications is +/- 2 dB(A).
For the measured quantities and their units: Introduction

Sound power and sound pressure levels for screw compressors of series HS.
to: evaporation temperature, tc: condensing temperature





Compressor




to/tc in °C

Sound power level in dB(A) at different frequencies (one-third octave band)

Sound pressure level in dB(A)

100 Hz

125 Hz

160 Hz

200 Hz

250 Hz

315 Hz

400 Hz

500 Hz

630 Hz

800 Hz

1000 Hz

1250 Hz

1600 Hz

2000 Hz

2500 Hz

3150 Hz

4000 Hz

5000 Hz

6300 Hz

8000 Hz

10000 Hz

HSN 7451-60

-35/+40

40.0

35.5

41.0

51.5

69.9

56.5

64.4

82.0

77.2

85.9

75.0

76.6

73.1

66.6

62.4

60.6

57.6

56.4

51.3

48.0

40.8

80.6

HSN 7461-70

-35/+40

36.4

41.7

37.8

46.9

65.7

51.7

61.1

79.5

76.3

86.0

74.0

78.0

76.0

70.9

67.2

67.6

64.5

65.4

65.7

62.0

57.5

80.4

HSK 7471-90

+5/+50

34.4

41.2

47.9

54.7

67.1

64.6

65.5

71.8

74.0

76.1

78.9

85.1

79.3

78.6

76.6

75.8

71.4

69.5

66.0

64.2

60.3

80.8

HSK 7471-90

-10/+45

32.3

35.4

38.5

53.9

69.8

63.4

64.4

76.4

70.9

75.5

78.6

84.1

79.3

79.0

79.2

79.6

74.7

72.4

67.8

65.3

60.1

81.2

HSN 7471-75

-35/+40

37.0

44.3

51.6

59.0

79.8

68.2

64.9

80.0

72.4

81.8

73.0

78.3

74.8

72.7

72.6

74.8

67.5

66.3

63.9

61.8

55.3

79.6

HSN 8571-125

-35/+40

41.1

35.0

37.3

52.8

70.6

60.0

69.5

87.3

72.1

79.4

86.1

77.0

83.0

72.8

62.5

65.4

58.6

54.9

54.6

54.3

50.9

83.3