校准器配件

GRAS OP0023 包含适用于 GRAS 嵌入式传声器一体装置的 1/2”、1/4” 和 1/8” 规格校准适配器。 这些适配器专为使用 GRAS 活塞式发声器（如 42AP）对 GRAS 47AX、47AD、47BX 和 47DX 传声器进行灵敏度校准而设计。它们不兼容 GRAS 42AG 声校准器。

GRAS OP0025 套件包含用于 GRAS 1/4 英寸精密表面传声器的校准适配器。 GRAS OP0025 套件包含 RA0202 灵敏度校准适配器，专为 GRAS 40LA 和 40LS 1/4 英寸表面传声器设计。该适配器仅与 GRAS 活塞式发声器兼容，例如 42AP。

Coupler for 1” microphones. For use with GRAS pistonphones.

Two-port coupler for 1/2” microphones. Used in comparison calibrations between two 1/2” microphones; one of which is a reference microphone. It can also be used in measuring the P-I (Pressure-Intensity) Index of intensity probes at 250 Hz. For use with GRAS 42AA & 42AP Pistonphones.

Two-port high-pressure coupler for 1/2” microphones. Used in comparison calibrations between two 1/2” microphones; one of which is a reference microphone. It can also be used in measuring the P-I (Pressure-Intensity) Index of intensity probes at 250 Hz. For use with GRAS 42AC Pistonphone.

Pistonphone coupler which is factory mounted on GRAS Pistonphone and they are factory calibrated as one unit.

Adapter for GRAS  1/4" and 7 mm microphones when calibrating using GRAS Pistonphones and Sound Calibrator.

1/2" Adapter for 1/8" microphones when calibrating using GRAS pistonphones and Sound Calibrator.

Octopus couplers for calibrating up to eight 1/2" microphones simultaneously.

一款大容量耦合器，可使 GRAS 42AA/AP 活塞式传声器产生 94 dB 的声压级，而非 114 dB（相对于 20 μPa）。在校准高灵敏度、GRAS 低噪声测量系统时必不可少。 该活塞式传声器耦合器专为校准低底噪传声器而设计，例如 GRAS 40HF、40HH、40HL、40HT 和 47HC 型号。它不适用于低底噪仿真耳，包括 GRAS 43BB 产品系列。作为替代方案，可使用设置为 94 dB 的 GRAS 42AG 声校准器套装，用于校准低底噪仿真耳和传声器。

A pistonphone adapter for calibration checking the Ear Simulator Type 43AE when a pinna simulator is mounted on the IEC 60711 Ear Simulator RA0045.

适用于 GRAS 校准器 42AA/42AP 的适配器，用于校准安装在 GRAS KEMAR（45BB/45BC）、45CB、43AG 或 45CA 测试夹具上的 711 型仿真耳（如 GRAS RA0045），需配合耳道延长管使用。

This precision barometer has an LCD which can display (toggle button) either the static-pressure correction (e.g. -0.13 dB) for a pistonphone or the ambient static pressure (e.g. 997 hPa). This product is intended as optional accessory for pistonphones which as standard has an analogue barometer included i.e. for GRAS 42AA, 42AC & 42AC-S2. When used for correction of these, the accuracy is improved.

This is a pistonphone adapter which is designed for field verification of the 1/2" flush-mount microphone included in GRAS 67AX/67AD Ground Array Microphone kits.

 RA0145 是用于 GRAS 40PS-1 表面传声器灵敏度校准的校准适配器。 此适配器仅可与 GRAS 活塞式发声器（如 42AP 型号）配合使用。