TYPE 4944-A
1/4" Pressure-field Microphone With CCLD DeltaTron Preamplifier
Pressure-field Microphone for measuring in small closed couplers, close to hard reflective surfaces or flush-mounted, with a frequency response of 16 Hz To 70 kHz.
견적 요청하기Type 4944-A is designed to be used in small closed couplers, close to hard reflective surfaces or flush mounted. It is a ¼-inch prepolarized pressure-field microphones laser welded to ¼-inch CCLD preamplifiers. The preamplifier connects to CCLD input conditioning and supports IEEEP1451.4V 0.9 TEDS (Transducer Electronic Data Sheet).
USE SCENARIOS
- High-level measurements
- High-frequency measurements
- Flush mounting
- Arrays in wind tunnels
DESIGN AND ROBUSTNESS
The shape of the microphone front ensures excellent microphone performance when flush-mounted. The laser-welded diaphragm on the microphone housing ensures that the sensitivity is resistant to rough handling during flush mounting.
MICROPHONE DATA CD
The microphone is supplied with a mini-CD. This mini-CD carries all individual calibration data as well as random-incidence and free-field corrections. The influence of ¼-inch Nose Cone UA-0385 is also available.
CALIBRATION
The sensitivity can be calibrated at 250 Hz using Pistonphone Type 4228 with ¼-inch Adaptor DP-0775. The pressure-field response can be measured using Actuator UA-0033 with Adaptor DB-0264. The pressure-field response is equal to the actuator response.
- Capacitance
- pF
- Diameter
- 1/4
- Dyn. range
- 48 – 169 dB
- Freq. range
- 16 – 70000 Hz
- Inherent noise
- 48 dB A
- Lower limiting frequency -3dB
- 16 Hz
- Optimised
- Pressure Field
- Polarization
- Prepolarized
- Polarization voltages
- V
- Pressure coefficient
- -0.003 dB/kPa
- Sensitivity
- 0.9 mV/Pa
- Temperature coefficient
- 0.009 dB/ºC
- Temperature range
- -20 – 100 ℃
- Venting
- Side
- Weight
- gram
- Sound field
- Pressure-field
- Input type
- CCLD IEPE
- Microphone type
- Pressure Field
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