TYPE 9699
Microphone Primary Calibration System
Our primary level microphone calibration system for calibration of laboratory standard microphones.
問い合わせ・見積依頼A primary level microphone calibration system for calibration of laboratory standard microphones.
Type 9699 applies the pressure reciprocity calibration technique and calibrates to the highest possible accuracy. A free-field system is available as Type 9799. The system performs pressure reciprocity calibration according to the method described in IEC 61094-2 for determining the pressure sensitivity of microphones described in IEC 61094-1 (Laboratory Standard Microphones).
The system is intended for National Metrology Institutes and other high-level laboratories. It is a turnkey system for routine measurements, which can be set up to meet the requirements of the user.
USE SCENARIOS
- Primary open-circuit pressure sensitivity calibration of laboratory standard microphones
- Measurements according to IEC 61094-2 on IEC 61094-1 microphone types:
- LS1P (for example, Type 4160)
- LS2aP (for example, Type 4180)
- Measurement of static pressure coefficient using integral pressure chamber
CALIBRATION SYSTEM FEATURES
- Fast PC-controlled determination of electrical transfer impedance
- Measurement and calibration data stored on disk or printed as hard copy
- Frequency range: 20Hz to 10kHz (LS1), 20Hz to 20kHz (LS2)
- Unique vibration and ambient noise damped microphone mounting stand
- Dimensionally stable plane-wave sapphire couplers
The system can work in a ‘normal’ laboratory environment with no specific precautions with respect to background noise and vibration.