HALT- the G.R.A.S. quality mark for your Data Safety HALT refers to the Highly Accelerated Lifetime Tests, which is also the quality mark of G.R.A.S. The HALT test of G.R.A.S. is created to confirm their microphones can perform under a real life situations. S&V Samford Instrument Ltd More Details: HALT
G.R.A.S. has developed a wide range of acoustic sensors and dedicated accessories for testing in both anechoic and hard-walled wind tunnels in the near and far field, at low and high wind speeds. GRAS 开发了各种声学传感器和专用配件，专用于在近场和远场的消声和硬壁风洞中进行低风速和高风速的测试。 S&V Samford Instruments Ltd. More Deatails: Acoustic sensors Brochure
Typical applications and use 典型应用和使用 - Very Low Sound pressure measurements 极低的声压测量- Lownoise product measurements 低噪音产品测量- Lowlevel Sound power measurements 低水平声功率测量- Measurements on hard-disk drives, computer products, quiet rooms etc. 硬盘驱动器、计算机产品、安静房间等的测量 G.R.A.S.
SV 103 Personal Human Vibration Exposure meter is dedicated to hand-arm vibration measurements. The instrument meets ISO 8041:2005 and is the ideal choice for making measurements according to ISO 5349 and European Directive 2002/44/EC. --- SV 103 Personal Human Vibration Exposure meter专用于手臂振动测量。 该仪器符合ISO 8041：2005标准，是根据ISO 5349和欧洲指令2002/44 / EC进行测量的理想选择。
The 42AC is an extremely stable laboratory standard sound source which can also be used for field calibrations – it retains its high accuracy even under hostile environmental conditions. 42AC是一种非常稳定的实验室标准声源，也可用于现场校准 - 即使在恶劣的环境条件下也能保持高精度。
The G.R.A.S. Accredited Calibration Laboratory is accredited by DANAK, the Danish Accreditation Fund. This accreditation is a quality label that proves that our calibration laboratory complies with the ISO 17025 standard for laboratories. GRAS 认可的校准实验室获得丹麦认证基金DANAK的认可。 该认证是一种质量标签，证明GRAS的校准实验室符合实验室的ISO 17025标准。 ----Brochure
The GRAS 46DE is a 1/8'' CCP Pressure Microphone Set. The preamplifier is 1/8", making it the world's smallest microphone set. G.R.A.S. 46DE是1/8寸CCP压力麦克风。 前置放大器为1/8寸，使其成为世界上最小的麦克风。 --- Frequency Range 频率范围 : 6.5Hz to 140kHz Dynamic Range 动态范围 : 47 dB(A) to 175dB Sensitivity 灵敏度 : 0.62 V/Pa
The GRAS 47AC is a 1/2" CCP precision condenser microphone set for infra-sound measurements in open acoustic fields. G.RAS 47AC是1/2寸 CCP精度电容式传声器，例如，开放的声场红外声音测量设置。
The GRAS 42AG Multifunction Sound Calibrator is a portable, battery operated sound source for calibration and check of microphones and sound level meters. It is designed for field use and comes with a protective casing. It conforms to the requirements in IEC 60942 for a class 1 sound calibrator. GRAS 42AG多功能声音校准器是一种便携式电池供电声源，用于校准和检查麦克风和声级计。...
MB-2200M10 is an ultra compact and lightweight microphone that enables measurement in narrow spaces, where have been difficult to install, without giving influence to the sound field.
Piccolo II The 2nd generation Piccolo Sound Level Meter Piccolo Professional Integrating SLM Class 2 and Data logger Fully Complies with IEC 61672 and ANSI S1.4; Frequency span 20Hz to 16kHz; Level ranges: Lo: 30 dBA to 110 dBzPk —> Hi: 40 dBA to 130 dBzPk Piccolo II More Details: Piccolo II Sound Level Meter