HBKShop | Treinamento | Recursos de Suporte

TYPE 4944

1/4" PRESSURE-FIELD MICROPHONE, PREPOLARIZED

Type 4944 is a ¼-inch Prepolarized Pressure-field Microphone designed for high-level and high-frequency measurements over a frequency range of 4 Hz To 70 kHz.

TYPE 4944

expand_more

chevron_left

chevron_right

Prepolarized ¼″ Pressure-field Microphone Type 4944 is specially designed for high-level and high-frequency measurements. By using new materials and a new way of mounting the diaphragm, the microphone is geared to withstand rough handling. The assembly of the microphone in a clean room environment ensures that the microphone can be used in high-humidity environments and still produce reliable results. Type 4944 can be used with sound level meters to measure high sound pressure levels

High-level measurements
High-frequency measurements
Flush mounting
In small closed couplers, close to hard reflective surfaces or flush-mounted
The sensitivity has been optimised to allow measurements of high sound pressure levels without clipping in the built-in CCLD preamplifier.

Code	Frecuencia de corte superior
-4944-A--	70 kHz
-4944-B--	70 kHz
-4944-W-007-	70000 Hz

TEDS Microphones	Data Sheets	English
1/4'' DeltaTron Pressure-field Microphones - Types 4944-A and 4944-B	Data Sheets	English
TEDS Microphones	Data Sheets	Japanese

FAMILY 4944
Standard	IEC 61094
Sound field	Pressure field
Polarization	CCLD
Sensitivity	0.9 mV/Pa
Lower frequency	16 Hz
Higher frequency	70 kHz, 70000 Hz
Lower dynamic range	48 dB
Higher dynamic range	169 dB
Diameter	1/4 inch
Venting	Side
Minimum Temperature	-20 °C
Maximum Temperature	100 °C
Minimum Temperature	-4 °F
Maximum Temperature	212 °F
Output signal (connectivity)	Passive

List of accessories available for all variants of this family

Product Code	Description
-4231---	Calibrador pressão sonora classe 1 e LS,
DB-0264---	ADAPTADOR
DP-0775---	Adaptor 1/4" Mic for 4228/4231
UA-0033---	Electrostatic Actuator 1/2" for HBK Mic
UA-0385---	Nose Cone for 1/4" Mic
UA-1588---	Holder for 1/4" Preamp use with a Tripod

Code	Frecuencia de corte superior
-4944-A--	70 kHz
-4944-B--	70 kHz
-4944-W-007-	70000 Hz

DESIGN E ROBUSTEZ

A forma da frente do microfone garante excelente desempenho do microfone quando montado embutido. O diafragma soldado a laser na carcaça do microfone garante que a sensibilidade resista a manuseios bruscos durante a montagem embutida.

MICROFONE DAT CD

O microfone é fornecido com um mini-CD. Este mini-CD contém todos os dados de calibração individuais, bem como correções de incidência aleatória e de campo livre. A influência do Cone de Nariz de ¼ de polegada UA-0385 também está disponível.

CALIBRAÇÃO

A sensibilidade pode ser calibrada a 250 Hz usando o Pistonphone Tipo 4228 com adaptador de ¼ de polegada DP-0775. A resposta do campo de pressão pode ser medida usando o Atuador UA-0033 com Adaptador DB-0264. A resposta do campo de pressão é igual à resposta do atuador.

Related Services