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Home Products Alat Kualitas Udara Kebisingan & Getaran GA905 Noise Switch (CASTLE)
GA905 Noise Switch (CASTLE)

GA905_Noise_SwitchThe Castle GA905 Industrial Sound Level Switch is a well established product, which has been in existence since the early 1970's. They have been used for a very varied range of tasks. To suit differing needs, Castle have on many occasions produced special versions, consequently this data sheet is designed to introduce the basic the concept rather than precise details of a fixed product.

 

SPECIFICATION TRIP RANGE
75dB to 112.5dB in 2.5 dB steps switch selectable ±5 dB calibration control (factory set)
TRIP TIME
10 second to 20 seconds user adjustable (potentiometer) When tripped unit automatically resets after a pre-selected trip time
FREQUENCY WEIGHTING
‘A’ weighted in accordance with BS5969 Type 2
THE WEIGHTING
Slow 1000mS in accordance with BS5969 Type 2
MICROPHONE
Type: Pre Polarised Condenser
Sensitivity: -65dB(0dB = 1V/µBar 1000Hz)
CALIBRATION
Factory calibrated.
CONTACT RATINGS
Changeover Contacts: 5A, 30Vdc/250Vac
Switched Mains: 1A 250V (Fuse F1 will blow above 1A)
TEMPERATURE
Operating range: -10ºC to +50ºC
Effect of temperature: < 0.5dB from -10ºC to +50ºC
HUMIDITY
Effect of Humidity: < 0.5dB from 30%RH to 90%RH
OVERALL DIMENSIONS AND WEIGHT
215 W x 120 H x 75 D mm, 550 g
In the interest of continued development Castle Group Ltd reserve the right to change any specification without prior notice.