intrinsically safe 378b02 microphone and preamplifier, atex, iecex, etl, anzex, approved

INTRINSICALLY SAFE MIC ATEX IECEx ETL

Model EX378B02

Retrieving Price...

(Pricing valid only in the U.S.)

Units in Stock	Lead Times
More on the way	Call for Lead Time

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

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.

	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]