一体化测试麦克风
一体化测试麦克风经过组合以满足我们用户的典型测量需求。无论您的测量系统和应用是什么,您都可以找到适合您需要的套装。这些麦克风组可以直接连接到所有的专业测量系统,如图所示,它们可用于 CCP和 7-pin LEMO 输入.
如果您的测量平台支持符合 IEEE 1451.4 (TEDS) 的智能传感器,您可以简单地插入麦克风,它们将会自动识别其特定的属性、类型和校准数据。这是一个多通道用户特别喜欢的功能。
CCP装置使用高质量的同轴电缆,而LEMO装置则使用一种特殊的、柔软的多芯屏蔽电缆。如果要使用加长的电缆,您应该考虑对上层频率和动态范围的可能影响。
所有一体化测试麦克风都作为一个单元交付,并进行相应的校准。这些套装在交付时附有校准图表,包括整套设备的灵敏度值和频率响应曲线。因此,灵敏度值可以直接用于您的系统设置。
为了经常验证测量链,需要一个声源。GRAS为此提供一个 114 dB 声校准器根据使用情况和您的内部质量控制要求,我们建议每两年至少对设备进行一次重新校准。为了更准确的验证,我们建议用活塞式校音器进行校准。GRAS提供 114dB and 134dB活塞式校准器. 此外,我们建议采用非常可靠的参照物对声源进行校准。GRAS提供 校准服务 并建议每两年进行一次这样的校准。
挑选你所选择的麦克风装置,或从麦克风指南中获得指导。
Freq range: 4 Hz to 100 kHz
Dyn range: 35 dB(A) to 172 dB
Sensitivity: 3.6 mV/Pa
Use: For general acoustic diagnostics
GRAS 46BF-1 1/4" LEMO Free-field Standard Microphone Set
The GRAS 46BF-1 is a 1/4" Traditional Power (LEMO) free-field microphone set for measuring high sound pressure levels at high frequencies. It is terminated with a 5-pin LEMO mini-connector and is TEDS compatible. The equivalent Constant Current Power (CCP) type is GRAS 46BE.
Freq range: 4 Hz to 70 kHz
Dyn range: 39 dB(A) to 172 dB
Sensitivity: 1.5 mV/Pa
GRAS 46BP-1 1/4" LEMO Pressure Standard Microphone Set
The 46BP is a 1/4" LEMO microphone set for pressure measurements.
Freq range (±3 dB): 0.5 Hz to 20 kHz
Dyn range: 17 dB(A) to 149 dB
Sensitivity: 50 mV/Pa
Use: For low frequency acoustic diagnostics
GRAS 46AN 1/2'' LEMO Free-field Standard Microphone Set, Low Frequency
The GRAS 46AN is a 1/2" Traditional Power (LEMO) free-field microphone set for measuring medium sound pressure levels at low frequencies. It is terminated with a 7-pin LEMO connector and is TEDS compatible. The equivalent Constant Current Power (CCP) type is GRAS 46AZ.
Freq range: 3.15 Hz to 20 kHz
Dyn range: 25 dB(A) to 164 dB
Sensitivity: 12 mV/Pa
GRAS 46AG 1/2'' LEMO Pressure Standard Microphone Set
The 46AG is a 1/2" LEMO microphone set for pressure measurements.
Freq range: 3.15 Hz to 10 kHz
Dyn range: 18 dB(A) to 149 dB
Sensitivity: 50 mV/Pa
GRAS 46AP 1/2" LEMO Pressure Standard Microphone Set, High Sensitivity
The GRAS 46AP is a 1/2" traditional 200 V (LEMO) pressure microphone set for measuring medium sound pressure levels at medium frequencies. It is terminated with a LEMO connector and is TEDS compatible. The equivalent Constant Current Power (CCP) type is GRAS 46AD.
Freq range: 3.15 Hz to 16 kHz
Dyn range: 19 dB(A) 149 dB
Sensitivity: 50 mV/Pa
GRAS 46AR 1/2'' LEMO Random Incidence Standard Microphone Set
The 46AR is a 1/2" LEMO microphone set for random-incidence measurements.
Freq range: 3.15 Hz to 40 kHz
Dyn range: 20 dB(A) to 164 dB
Sensitivity: 12.5 mV/Pa
Use: For general acoustic diagnostics
GRAS 46AC 1/2'' LEMO Free-field Standard Microphone Set, Wide Frequency
The GRAS 46AC is a 1/2" Traditional Power LEMO free-field microphone set for measuring medium sound pressure levels at a wide range of frequencies. It is terminated with a 7-pin LEMO connector and is TEDS compatible. The equivalent Constant Current Power (CCP) type is GRAS 46AM.
Freq range: 3.15 Hz to 20 kHz
Dyn range: 17 dB(A) to 149 dB
Sensitivity: 50 mV/Pa
Use: For general acoustic diagnostics
GRAS 46AF 1/2'' LEMO Free-field Standard Microphone Set
The GRAS 46AF is a 1/2" Traditional Power (LEMO) free-field microphone set for measuring medium sound pressure levels at medium frequencies. It is terminated with a 7-pin LEMO connector and is TEDS compatible. The equivalent Constant Current Power (CCP) type is GRAS 46AE.
Freq range: 10 Hz to 20 kHz
Dyn range: 54 dB(A) to 193 dB
Sensitivity: 0.4 mV/Pa
GRAS 46BH-1 1/4" LEMO Pressure Standard Microphone Set, High pressure
GRAS 46BH 1/4"' LEMO Pressure Microphone Set, High Pressure
Freq range: 6.5 Hz to 140 kHz
Dyn range: 52 dB(A) to 178 dB
Sensitivity: 0.9 mV/Pa
GRAS 46DP-1 1/8" LEMO Pressure Standard Microphone Set
The 46DP-1 is a 1/8” LEMO microphone set for pressure measurements.
Freq range: 3.15 Hz to 20 kHz
Dyn range: 18 dB(A) to 133 dB
Sensitivity: 50 mV/Pa
Temperature: -40 to +125°C
Humidity: 10 – 90%
IP67
GRAS 146AE 1/2'' CCP Free-field Microphone Set
The GRAS 146AE is a 1/2" free-field measurement microphone set for measurements in extreme environments. It is terminated with a BNC connector and is optimzed for use under rough conditions at temperatures from -40 to 125°C. It provides accurate data under the most challenging conditions - it can resist shock, vibration, water, dust and extreme temperatures.
Freq range: 3.15 Hz to 20 kHz
Dyn range: 19 dB(A) to 133 dB
Sensitivity: 42 mV/Pa
Temperature: -40 to +125°C
Humidity: 0 – 90%
IP67
GRAS 147AX CCP Rugged Pressure Microphone
The GRAS 147AX is a rugged CCP surface-mounted pressure microphone optimized for automotive engine compartment testing. It has an integrated cable with BNC connector and comes with a novel magnetic mounting system for easy and precise mounting even in difficult-to-access locations.
Freq range: 3.15 Hz to 20 kHz
Dyn range: 18 dB(A) to 133 dB
Sensitivity: 50 mV/Pa
Temperature: -40 to +125°C
Humidity: 0 – 90%
IEC 61672 class 2
IP67
GRAS 147EB CCP X-Rugged Microphone Set
The GRAS 147EB is a free-field microphone set optimized for automotive brake noise testing. With a rugged design and extra protection of the diaphragm it is ideal for prolonged driving tests on public roads. It provides accurate data under the most challenging conditions - it can resist shock, vibration, water, dust and extreme temperatures. It has a watertight BNC connector.
Freq range: 3.15 Hz to 20 kHz
Dyn range: 17 dB(A) to 138 dB
Sensitivity: 50 mV/Pa
IEC 61672 Class 1
Use: For general acoustic testing—
SysCheck2-enabled measurement chains
GRAS 246AE 1/2" CCP Free-field Standard SysCheck2™ Microphone Set
GRAS 246AE is a ½″ Constant Current Power (CCP) free-field microphone set with SysCheck2™ and is optimized for all acoustic applications, where the location of the main sound source is known and the microphone can be pointed directly at it ensuring 0° incidence. It is terminated with a BNC connector and is TEDS compatible.
Freq range: 3.15 Hz to 10 kHz
Dyn range: 18 dB(A) to 138 dB
Sensitivity: 50 mV/Pa
GRAS 46AD 1/2" CCP Pressure Standard Microphone Set, High Sensitivity
The GRAS 46AD is a 1/2" Constant Current Power (CCP) pressure microphone set for measuring medium sound pressure levels at medium frequencies. It is terminated with a BNC connector and is TEDS compatible. The equivalent traditional 200 V (LEMO) type is GRAS 46AP.
Freq range: 3.15 Hz to 20 kHz
Dyn range: 17 dB(A) to 138 dB
Sensitivity: 50 mV/Pa
IEC 61672 Class 1
Use: For general acoustic diagnostics
GRAS 46AE 1/2'' CCP Free-field Standard Microphone Set
The GRAS 46AE is a 1/2" Constant Current Power (CCP) free-field microphone set for measuring medium sound pressure levels at medium frequencies. It is terminated with a BNC connector and is TEDS compatible. The equivalent traditional 200 V (LEMO) type is GRAS 46AF.
Freq range: 3.15 Hz to 31.5 kHz
Dyn range: 25 dB(A) to 149 dB
Sensitivity: 14.5 mV/Pa
Use: For general acoustic diagnostics
GRAS 46AM 1/2'' CCP Free-field Standard Microphone Set, Wide Frequency
The GRAS 46AM is a 1/2" Constant Current Power (CCP) free-field microphone set for measuring medium sound pressure levels at a wide range of frequencies. It is terminated with a BNC connector and is TEDS compatible. The equivalent traditional 200 V LEMO type is GRAS 46AC.
Freq range: 3.15 Hz to 20 kHz
Dyn range: 25 dB(A) to 150 dB
Sensitivity: 12 mV/Pa
GRAS 46AO 1/2'' CCP Pressure Standard Microphone Set
The 46AO is a 1/2" CCP microphone set for wide-frequency pressure measurements. Its LEMO equivalent is 46AG.
Freq range: 3.15 Hz to 20 kHz
Dyn range: 25 dB(A) to 150 dB
Sensitivity: 12 mV/Pa
GRAS 46AO-S2 1/2'' CCP Pressure Microphone Set, very short
The 46AO-S2 is a 1/2" CCP microphone set for wide-frequency pressure measurements with very short preamplifier for confined spaces.
Freq range: 3.15 Hz to 12.5 kHz
Dyn range: 17 dB(A) to 138 dB
Sensitivity: 50 mV/Pa
GRAS 46AQ 1/2'' CCP Random Incidence Standard Microphone Set
The 46AQ is a 1/2" CCP microphone set for random-incidence measurements.
Freq range (±3 dB): 0.5 Hz to 20 kHz
Dyn range: 17 dB(A) to 138 dB
Sensitivity: 50 mV/Pa
Use: For low frequency acoustic diagnostics
GRAS 46AZ 1/2'' CCP Free-field Standard Microphone Set, Low Frequency
The GRAS 46AZ is a 1/2" Constant Current Power (CCP) free-field microphone set for measuring medium sound pressure levels at low frequencies. It is terminated with a BNC connector and is TEDS compatible. The equivalent traditional 200 V (LEMO) type is GRAS 46AN.
Freq range: 4 Hz to 20 kHz
Dyn range: 24 dB(A) to 145 dB
Sensitivity: 20 mV/Pa
GRAS 46BC 1/4" CCP Multifield Microphone Set, High Sensitivity
The 46BC is a high-sensitivity, low-noise, multifield ¼″ CCP condenser microphone set with rear venting and is optimized for use with the protection grid.
Freq range: 5 Hz to 70 kHz
Dyn range: 44 dB(A) to 166 dB
Sensitivity: 1.45 mV/Pa
GRAS 46BD 1/4" CCP Pressure Standard Microphone Set
The 46BD is a 1/4" CCP microphone set for pressure measurements.
Freq range: 5 Hz to 70 kHz
Dyn range: 44 dB(A) to 166 dB
Sensitivity: 1.45 mV/Pa
GRAS 46BD-FV 1/4" CCP Pressure Standard Microphone Set, Front Vented
The 46BD-FV is a front vented 1/4” CCP microphone set for pressure measurements.
Freq range: 5 Hz to 70 kHz
Dyn range: 44 dB(A) to 166 dB
Sensitivity: 1.45 mV/Pa
GRAS 46BD-S1 1/4" CCP Pressure Standard Microphone Set with SMB connector
The 46BD-S1 is a 1/4" CCP microphone set for pressure measurements. It is terminated with a SMB connector.
Freq range: 4 Hz to 80 kHz
Dyn range: 35 dB(A) to 160 dB
Sensitivity: 3.6 mV/Pa
Use: For general acoustic diagnostics
GRAS 46BE 1/4" CCP Free-field Standard Microphone Set
The GRAS 46BE is a ¼″ Constant Current Power CCP free-field microphone set for measuring high sound pressure levels at high frequencies. It is terminated with a 10/32 UNC microdot female connector and is TEDS compatible. The equivalent traditional 200 V LEMO type is GRAS 46BF NOTE: Optimized for use without protection grid—remove grid before measuring.
Freq range: 3.15 Hz to 70 kHz
Dyn range: 60 dB(A) to 184 dB
Sensitivity: 0.25 mV/Pa
GRAS 46BG 1/4" CCP Pressure Standard Microphone Set, High Pressure
The GRAS 46BG is a 1/4" CCP pressure microphone set for measuring very high sound pressure levels.
Freq range: 3.15 Hz to 70 kHz
Dyn range: 60 dB(A) to 184 dB
Sensitivity: 0.25 mV/Pa
GRAS 46BG-FV 1/4" CCP Pressure Front Vented Microphone Set, High Pressure
The GRAS 46BG-FV is a front-vented 1/4" CCP pressure microphone set for measuring very high sound pressure levels.
Freq range: 4 Hz to 20 kHz
Dyn range: 24 dB(A) to 146 dB
Sensitivity: 20 mV/Pa
GRAS 46BL-1 1/4" CCP Pressure Standard Microphone Set, High Sensitivity
GRAS 46BL-1 is a high-sensitivity, low-noise ¼″ CCP condenser microphone set with rear-venting.
Freq range: 4 Hz to 20 kHz
Dyn range: 24 dB(A) to 146 dB
Sensitivity: 20 mV/Pa
GRAS 46BL-1-FV 1/4" CCP Pressure Standard Microphone Set, High Sensitivity, Front-vented
GRAS 46BL-1-FV is a high-sensitivity, low-noise ¼″ CCP condenser microphone set with front-venting.
Freq range: 6.5 Hz to 140 kHz
Dyn range: 52 dB(A) to 174 dB
Sensitivity: 0.8 mV/Pa
GRAS 46DD 1/8'' CCP Pressure Standard Microphone Set
GRAS 46DD 1/8'' CCP Pressure Microphone Set
Freq range: 6.5 Hz to 70 kHz
Dyn range: 52 dB(A) to 175 dB
Sensitivity: 0.8 mV/Pa
GRAS 46DD-FV 1/8'' CCP Pressure Standard Microphone Set, Front Vented
GRAS 46DD-FV is a 1/8'' CCP Pressure Microphone Set with front venting
Freq range: 6.5 Hz to 140 kHz
Dyn range: 52 dB(A) to 174 dB
Sensitivity: 0.8 mV/Pa
GRAS 46DE 1/8'' CCP Pressure Standard Microphone Set
The GRAS 46DE is a 1/8'' CCP Pressure Microphone Set. The preamplifier is 1/8", making it the world's smallest microphone set.