Elmo Rietschle G-BH7 Operating instructions - Manual (Page 9)

Technical Data
© Gardner Denver Deutschland GmbH 9 / 28 610.44436.40.000
Noise level
Measuring-surface sound-pressure level as per
EN ISO 3744, measured at a distance of 1 m
[3.28 ft] at an operating point of approximately
2/3 of the permissible total pressure difference
with the lines connected without a vacuum or
pressure relief valve, tolerance ±3 dB (A).
Single-impeller design
Model 1-m measuring-surface
sound pressure level L
[dB (A)]
50 Hz 60 Hz
2BH7210-0..1.-. 70
2BH7310-0..1.-. 70
2BH7310-0..2.-. 70
2BH7410-0..1.-. 70
2BH7510-0..1.-. 70
2BH7510-0..2.-. 70
2BH7610-0..1.-. 71
2BH7610-0..3.-.
70
71
Two-impeller design
Model 1-m measuring-surface
sound pressure level L
[dB (A)]
50 Hz 60 Hz
2BH7220-0..2.-. 70
2BH7220-0..5.-. 70
2BH7320-0..5.-. 70
2BH7420-0..2.-. 70
2BH7420-0..5.-. 70
2BH7520-0..2.-. 70
2BH7520-0..7.-. 71
2BH7620-0..3.-. 71
2BH7620-0..5.-.
70
72
Three-impeller design
Model
1-m measuring-surface
sound pressure level L
[dB (A)]
50 Hz 60 Hz
2BH7530-0..8.-. 67 73
2BH7630-0..6.-. 77 80
Temperature increase
The information listed in the following tables
corresponds to the heating of vacuum
pump/compressor housings and the air exiting
compared to the ambient temperature during
operation with a permissible total pressure
difference and an air pressure of 1,013 mbar
[14.7 psi]. At lower air pressures these values
increase.
Single-impeller design
Model Temperature increase
∆T [K]
approx.
∆  [F]
approx.
50 Hz 60 Hz 50 Hz 60 Hz
2BH7210-0..1.-. 52 61 94 110
2BH7310-0..1.-. 61 61 110 110
2BH7310-0..2.-. 81 86 146 155
2BH7410-0..1.-. 90 101 162 182
2BH7510-0..1.-. 93 111 167 200
2BH7510-0..2.-. 120 112 216 202
2BH7610-0..1.-. 118 124 212 223
2BH7610-0..3.-. 118 124 212 223
Two-impeller design
Model Temperature increase
∆T [K]
approx.
∆  [F]
approx.
50 Hz 60 Hz 50 Hz 60 Hz
2BH7220-0..2.-. 55 77 99 139
2BH7220-0..5.-. 74 110 133 198
2BH7320-0..5.-. 81 124 146 223
2BH7420-0..2.-. 89 80 160 144
2BH7420-0..5.-. 121 117 218 211
2BH7520-0..2.-. 89 102 160 184
2BH7520-0..7.-. 125 110 225 198
2BH7620-0..3.-. 124 126 223 227
2BH7620-0..5.-. 124 128 223 230
Three-impeller design
Model Temperature increase
∆T [K]
approx.
∆  [F]
approx.
50 Hz 60 Hz 50 Hz 60 Hz
2BH7530-0..8.-. 120 120 216 216
2BH7630-0..6.-. 120 120 216 216