A microphone can alter the sound field in which it is placed. Norsonic’s and Rion’s range of free-field microphones are engineered to compensate for this effect so they can measure the sound pressure as it existed before the microphone was introduced. Because of this compensation, they provide accurate measurements in environments such as outdoors, anechoic chambers, and reverberation rooms.
Available range of microphones and preamplifiers includes both pre-polarized models and externally polarized models requiring a 200 V bias voltage. Options are available for low-noise, low-frequency, and ultrasound measurements, allowing users to select the optimal sensor for the specific application.
Norsonic Microphones and Preamplifiers
Frequency Response: (18 pF/small signal): 20 Hz – 20 kHz: ±0,1 dB
Gain: Typ -0.1 dB (-0.2 with 20 pF)
Input Impedance: 10 GΩ, 1.4 pF
Output Impedance: 50 ohm typical
Noise (20 pF dummy mic.):
i. A-weighted < 2,2μV (typ 1,8μV)
ii. Lin (20 Hz – 20 kHz) <6 μV (typ 3,8 μV)
Power Supply:
i. Single: 28 V (1mA) to 120 V (2.8mA)
ii. Dual: ±14 V(1 mA) to ± 60 V (2.8 mA)
iii. Maximum signal output voltage (peak): ±10 to ±50 V (dep. on supply)
Temperature: -25°C to +70°C (operation)
Relative Humidity: 0 – 90%
Length: 83 mm
Body Diameter: 12.7 mm
Ring Diameter: 14 mm
Weight: 36 g
EC Classification: As for sound level meter Nor140.
Cartridge size: 1/2” inch
Main standard: IEC 61672 Class 1
Polarisation voltage: 0 volt
IEC 61094-4 Designation: WS2F
Nominal sensitivity: 50 mV/Pa
Frequency response: ±1dB 5 Hz – 10k Hz, ±3 dB 3,15 Hz – 20 kHz
Maximum SPL (3% dist): 146 dB re. 20µPa
Self noise: 15 dB(A)
Capacitance: 14 pF
Temperature coeff. (250 Hz): <0.005 dB°C
Max. temperature: 120 °C
Static pressure coeff. (250 Hz): -0.008 dB/kPa
Relative humidity coeff. (no condens.): Not measurable dB/%
Diameter: 13.2 mm
Length: 16.2 mm
Weight: 6 g
Cartridge Size: 1/2″
Main Standard: IEC 61094-4 Type WS2F
Bias Voltage: 0 Volt
IEC 61094-4 Designation: WS2F
Nominal Sensitivity: 50 mV/Pa
Frequency Response: 10 Hz to 20 kHz
Maximum SPL (3% dist): 148 dB re. 20µPa
Self Noise: 16 dB(A)
Capacitance: 13 pF
Temperature Coeff. (1 kHz): ±0.35 dB
Max. Temperature: 60 °C
Static Pressure Coeff. (250 Hz): N/A
Relative Humidity Coeff. (no condens.): < ±0.14 dB max.
Diameter: 13.2 mm
Length: 14.3 mm
Weight: 4.7 g
Rion Microphones and Preamplifiers
Frequency Response: 20 Hz – 100 kHz
Bias Voltage: 200 V
Sensitivity Level: (dB re 1/Pa): -47
Capacitance (pF): 6
Maximum Input Sound Pressure Level (dB): 164 *Distortion rate 3%
A-weighted Inherent Noise (dB): 42
Temperature Coefficient (dB/°C): -0.01
Diaphragm: Titanium
Dimensions (mm): 7.0 (dial) x 10.0
Suggested Preamplifier: NH-05B
Frequency Response: 10 Hz – 20 kHz
Bias Voltage: 200 V
Sensitivity Level (dB re 1/Pa): -25.5
Capacitance (pF): 17
Maximum Input Sound Pressure Level (dB): 144 *Distortion rate 3%
A-weighted Inherent Noise (dB): 20
Temperature Coefficient (dB/°C): -0.007
Diaphragm: Titanium Alloy
Dimensions (mm): 13.2 (dial) x15
Suggested Preamplifier: NH-04B/-5B/12A
Frequency Response: 10 Hz – 35 kHz
Bias Voltage: 200 V
Sensitivity Level (dB re 1/Pa): -37
Capacitance (pF): 20
Maximum Input Sound Pressure Level (dB): 160 *Distortion rate 3%
A-weighted Inherent Noise (dB): 26
Temperature Coefficient (dB/°C): -0.007
Diaphragm: Titanium Alloy
Dimensions (mm): 13.2 (dial) x13.2
Suggested Preamplifier: NH-04B/-5B/12A
Frequency Response: 10 Hz – 12.5 kHz
Bias Voltage: 0 V
Sensitivity Level (dB re 1/Pa): 0
Capacitance (pF): –
Maximum Input Sound Pressure Level (dB): 96 *Distortion rate 3%
A-weighted inherent noise (dB): 4
Temperature Coefficient (dB/°C): –
Diaphragm: Titanium Alloy
Dimensions (mm): 23.8 (dial) x 132.7
Suggested Preamplifier: NH-17/17A/21/22A
Frequency Response: 20 Hz – 8 kHz
Bias Voltage: 0 V
Sensitivity Level (dB re 1/Pa): -33
Capacitance (pF): 13
Maximum Input Sound Pressure Level (dB): 148 *Distortion rate 3%
A-weighted Inherent Noise (dB): 24
Temperature Coefficient (dB/°C): -.008
Diaphragm: Titanium Alloy
Dimensions (mm): 13.2 (dial) x12.0
Suggested Preamplifier: NH-17/17A/22A/24*
*UC-52 and NH-24 are the most common microphone and preamplifier set for Rion Class 2 Meters
Frequency Response: 10 Hz – 20 kHz
Bias Voltage: 0 V
Sensitivity Level (dB re 1/Pa): -27
Capacitance (pF): 13
Maximum Input Sound Pressure Level (dB): 148 *Distortion rate 3%
A-weighted Inherent Noise (dB): 18
Temperature Coefficient (dB/°C): <±0.35 dB (at 1 kHz)
Diaphragm: Titanium Alloy
Dimensions (mm): 13.2 (dial) x14.3
Compatible Preamplifier: NH-17/17A/22A/25*
*UC-59 and NH-25 are the most common microphone and preamplifier set for Rion Class 1 Meters
Frequency Response: 10 Hz – 100 kHz
Bias Voltage: 200 V
Input Impedance (GΩ): 10
Capacitance (pF): 0.2
Gain (dB): -0.5 (6pF) (UC-29*)
A-weighted Inherent Noise (dB): 42 (UC-29)
Output Impedance: ≤ 100
Cable Type: EC-04 series (7p)
*The UA-12 Conversion Adapter enables 1/4″ Rion microphones to connect seamlessly to 1/2″ preamplifiers while maintaining full calibration accuracy and connection integrity. This compact yet essential accessory broadens your measurement capabilities by allowing the use of smaller 1/4″ microphones in standard 1/2″ setups.
Frequency response: 10 Hz – 100 kHz
Bias Voltage: 200 V
Input Impedance (GΩ): 3
Capacitance (pF): 0.25
Gain (dB): -0.2 (17pF) (UC-30)
A-weighted Inherent Noise (dB): 20 (UC-30)
Output Impedance: ≤ 100
Cable Type: EC-04 series (7p)
*The UA-12 Conversion Adapter enables 1/4″ Rion microphones to connect seamlessly to 1/2″ preamplifiers while maintaining full calibration accuracy and connection integrity. This compact yet essential accessory broadens your measurement capabilities by allowing the use of smaller 1/4″ microphones in standard 1/2″ setups.
Frequency Response: 10 Hz – 100 kHz
Bias Voltage: 200 V
Input Impedance (GΩ): 3
Capacitance (pF): 0.25
Gain (dB): -0.2 (17pF) (UC-30)
A-weighted Inherent Noise (dB): 20 (UC-30)
Output Impedance: ≤ 100
Cable Type: 1.5m integrated (7p)
*The UA-12 Conversion Adapter enables 1/4″ Rion microphones to connect seamlessly to 1/2″ preamplifiers while maintaining full calibration accuracy and connection integrity. This compact yet essential accessory broadens your measurement capabilities by allowing the use of smaller 1/4″ microphones in standard 1/2″ setups.
Frequency Response: 10 Hz – 100 kHz
Bias Voltage: 0 V
Input Impedance (GΩ): 3
Capacitance (pF): 0.8
Gain (dB): -0.5 (13pF) (UC-59)
A-weighted Inherent Noise (dB): 18 (UC-59)
Output Impedance: ≤ 300
Cable Type:
NH-17: 5m integrated (7p)
NH-17A: EC-04 series (7p)
*The UA-12 Conversion Adapter enables 1/4″ Rion microphones to connect seamlessly to 1/2″ preamplifiers while maintaining full calibration accuracy and connection integrity. This compact yet essential accessory broadens your measurement capabilities by allowing the use of smaller 1/4″ microphones in standard 1/2″ setups.
Frequency Response: 10 Hz – 100 kHz
Bias Voltage: 0 V
Input Impedance (GΩ): 6
Capacitance (pF): 0.7
Gain (dB): -0.5 (13pF) (UC-59)
A-weighted Inherent Noise (dB): 18 (UC-59)
Output Impedance: Approx. 30
Cable Type: EC-90 series (BNC)
*The UA-12 Conversion Adapter enables 1/4″ Rion microphones to connect seamlessly to 1/2″ preamplifiers while maintaining full calibration accuracy and connection integrity. This compact yet essential accessory broadens your measurement capabilities by allowing the use of smaller 1/4″ microphones in standard 1/2″ setups.
