GRAS 67SB Đầu micrô đo xung nổ theo chuẩn ANSI S12.42

GRAS 67SB Blast Probe Microphone according to ANSI S12.42

Part Number: 67SB

Category: GRAS Sound & Vibration

Status: Available

Freq range: 10 Hz to 20 kHz
Dyn range: 52 dB(A) to 174 dB

Sale Price: Liên hệ

0903368648

+84903368648

1. 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.

2. Specifications

Polarization/Connection	200 V / Traditional
Frequency range (±2 dB)	10Hz to 20kHz
Dynamic range (mic. thermal noise - upper limit)	52 dB(A) - 174 dB
Microphone venting	Rear venting
Output Impedance	75 Ohm
Operating temperature	-30 to 70 °C
Storage temperature	-40 to 85 °C
Static pressure coefficient @250 Hz	-0.01 dB/kPa at 25°C
Humidity range non condensing	0 tới 95 % RH
Humidity coefficient @250 Hz	-0.1 dB/% RH
Influence of axial vibration @1 m/s²	59 dB re 20 µPa
Connector type	7-pin LEMO (FGG.1B,307)
CE/RoHS compliant/WEEE registered	Yes/Yes/Yes
Weight	650 g