Model : EX378B02 | ICP MICROPHONE SYSTEM

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$ 1,700.00 USD
(Pricing valid in US only!)

Intrinsically safe 378B02 microphone and preamplifier, ATEX, IECEx, ETL approved

INDUSTRY EXCLUSIVE 1/2" prepolarized condenser microphone system. It is Hazardous Locations & Explosive Atmospheres compliant and can safely be employed in gaseous hazardous environments where standard microphones may cause a spark and fire. 


The EX378B02 includes a 1/2" Free-field microphone cartridge, preamplifier, and system calibration,  compliant with Intrinsic Safe

  • Nominal Microphone Diameter: 1/2"
  • Frequency Response Characteristic: Free-Field
  • Frequency Range: (±2dB)3.75 to 20000 Hz (3.75 to 20000 Hz)
  • Inherent Noise: 15.5 dB(A) re 20 µPa
  • Dynamic Range: 137 dB re 20 µPa

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English: SI:
Performance
Nominal Microphone Diameter 1/2" 1/2"
Frequency Response Characteristic (at 0° incidence) Free-Field Free-Field
Sensitivity (±1.5 dB) -26 dB re 1 V/Pa -26 dB re 1 V/Pa [2]
Sensitivity 50 mV/Pa 50 mV/Pa [2]
Frequency Range (±2 dB) 3.75 to 20000 Hz 3.75 to 20000 Hz
Frequency Range (±1 dB) 7 to 10000 Hz 7 to 10000 Hz
Lower Limiting Frequency (3) 1.0 to 3.0 Hz 1.0 to 3.0 Hz
Inherent Noise 15.5 dB(A) re 20 µPa 15.5 dB(A) re 20 µPa [1]
Dynamic Range (3% Distortion Limit) 137 dB re 20 µPa 137 dB re 20 µPa [1]
Environmental
Temperature Range (Operating) -40 to +176 °F -40 to +80 °C
Temperature Coefficient of Sensitivity (+14 to +158°F (-10 to +70°C)) 0.005 dB/°F 0.009 dB/°C [1] [2]
Static Pressure Coefficient -0.013 dB/kPa -0.013 dB/kPa [1] [2]
Humidity Coefficient of Sensitivity (0 to 100%, non-condensing) ±0.001 dB/%RH ±0.001 dB/%RH [2]
Influence of Axial Vibration (0.1g (1 m/s²)) 63 dB re 20 µPa 63 dB re 20 µPa [1]
Electrical
Polarization Voltage 0 V 0 V [3]
Excitation Voltage 20 to 30 VDC 20 to 30 VDC
Constant Current Excitation 2 to 20 mA 2 to 20 mA
Output Bias Voltage 10 to 14 VDC 10 to 14 VDC
Maximum Output Voltage ±7 Vpk ±7 Vpk
Output Impedance <50 Ohm <50 Ohm
Physical
Housing Material Stainless Alloy Stainless Alloy
Venting Rear Rear [4]
Electrical Connector BNC Jack BNC Jack
Mounting Thread (Grid) 0.5 - 60 UNS 0.5 - 60 UNS
Size - Diameter (with grid) 0.52 in 13.2 mm
Size - Diameter (without grid) 0.50 in 12.7 mm
Size - Height (with grid) 4.02 in 102.1 mm
Size - Height (without grid) 3.99 in 101.2 mm
Weight 1.87 oz 53 gm [1]
* All specifications are at room temperature unless otherwise specified
.


Specification Notes


[1] Typical.
[2] re 250 Hz
[1] Typical.
[2] re 250 Hz
[3] Prepolarized
[1] Typical.
[4] Venting through Preamp.
[5] See PCB Declaration of Conformance PS172 for details.


Accessories


Supplied
ACS-63 Calibration for microphone/preamplifier with TEDS programming 1