GRAS 67SB Blast Probe Microphone according to ANSI S12.42
Freq range: 10 Hz to 20 kHz
Dyn range: 52 dB(A) to 174 dB
Technology
The 67SB Blast Probe is designed as a reference microphone for impulse measurements according to the ANSI S12.42 standard. The 67SB can measure impulse signals with an A-duration of 0.5 ms ≤ impulse ≤ 2.0 ms, and it has a working range of 10 Hz – 20 kHz. The 1/8” reference microphone inside the 67SB is ideally suited for capturing impulsive signals with a very fine time resolution. This microphone has an upper limit of 174 dB in the dynamic range.
The 67SB is equipped with a 1/8" reference microphone which is designed to capture impulsive noise with a very short duration. The 67SB is provided with a 1/4" threaded hole for monting the 67SB directly on a tripod e.g. AL0006.
The design and concept of the 67SB, and the microphone and preamplifier, comply with the following standards:
• ANSI S12.42 – “Methods for the Measurement of Insertion Loss of Hearing Protection Devices in Continuous or Impulsive Noise Using Microphone-in-Real Ear or Acoustic Test Fixture Procedures”
• IEC Standard 61094-1 – “Specifications for Laboratory Standard Microphones”
The 67SB has a length of 410 mm.
Specifications
GRAS Sound & Vibration reserves the right to change specifications and accessories without notice.
Ordering info
Included
| GRAS RA0246 | Calibration clip for use with Pistonphone |
| GRAS GR1243 | Pistonphone adapter |
| GRAS YY0012 | 1.5 mm Hex key |
| GRAS LI0056 | Manual |
Optional
| GRAS 12AK | 1-ch LEMO Power Module with gain, filters and SysCheck generator |
| GRAS AA0008 | 3 m LEMO extension cable |
| GRAS AA0009 | 10 m LEMO extension cable |
| GRAS 42AP | Intelligent Pistonphone |
| GRAS AL0006 | Tripod |
GRAS Sound & Vibration reserves the right to change specifications and accessories without notice.
