Nor1207 1/2" ICP Microphone Preamplifier
ICP-powered preamplifier for 1/2" measurement microphones.
Overview
The Nor1207 is a 1/2" ICP (Integrated Circuit Piezoelectric) powered microphone preamplifier that enables Norsonic condenser microphones to be used with ICP/IEPE constant-current powered input channels commonly found on multi-channel data acquisition systems, vibration analysers, and FFT analysers. By converting the high-impedance microphone signal to a low-impedance ICP-compatible output, the Nor…
Key Features
- ICP/IEPE constant-current power compatible (2-20 mA)
- Enables condenser microphones on ICP data acquisition channels
- 1/2" microphone compatibility with IEC 61094-4 microphones
- Low-impedance output for long cable runs without signal loss
- Wide dynamic range preserving full microphone performance
- No external power supply required beyond ICP current
- Compatible with all major multi-channel data acquisition systems
- Voltage output proportional to acoustic pressure
Applications
- Multi-channel noise and vibration data acquisition systems
- Simultaneous acoustic and vibration measurements in industrial plants
- Automotive NVH testing with mixed sensor configurations
- Integration with third-party ICP/IEPE measurement equipment
- Laboratory multi-channel acoustic measurement setups
- Machinery noise diagnostics alongside vibration monitoring
Technical Specifications
- Input: 1/2" microphone
- Power: ICP (2-20 mA)
- Output: Voltage proportional to pressure
Frequently Asked Questions
- What is ICP?
ICP (Integrated Circuit Piezoelectric), also known as IEPE (Integrated Electronics Piezo-Electric), is a widely adopted standard for powering sensors via a constant current (typically 2-20 mA) supplied through the signal cable. Originally developed for piezoelectric accelerometers, ICP inputs are now standard on most multi-channel data acquisition systems, vibration analysers, and FFT analysers from all major manufacturers. - Can I use the Nor1207 with any ICP-powered input?
Yes, the Nor1207 is compatible with any standard ICP/IEPE constant-current input providing 2-20 mA. This includes data acquisition systems and analysers from manufacturers such as National Instruments, Bruel & Kjaer, HEAD acoustics, Siemens, and others. The output is a standard low-impedance voltage signal proportional to acoustic pressure. - What advantage does ICP powering offer for acoustic measurements?
ICP powering allows acoustic microphone channels to be seamlessly integrated alongside accelerometer channels in multi-channel data acquisition systems without requiring separate microphone power supplies. This simplifies cabling, reduces equipment count, and enables simultaneous noise and vibration measurements through a single acquisition platform, which is particularly valuable for industrial diagnostics and NVH testing.
Application Guide
The Nor1207 1/2" ICP Microphone Preamplifier belongs to the Norsonic Microphones range. See the Microphones application guide for system configuration, compatible accessories, and applicable measurement standards.
Related Norsonic Products
- Nor1203 1/2" Insert Voltage Preamplifier — Insert voltage preamplifier for 1/2" measurement microphones.…
- Nor1225 Free-field Microphone — Class 1 free-field measurement microphone.…
Why Norsonic?
- Manufactured in Norway — decades of acoustic measurement heritage; all instruments designed and built in Norsonic AS, Lierskogen, Norway
- IEC 61672 Class 1 — highest accuracy class for professional and regulatory acoustic measurement
- International type approvals — PTB (Germany) and LNE (France); accepted by environmental authorities across the region
- 3-year manufacturer warranty — covers parts and labour; Norsonic Asia authorized service center support throughout the region
- Open data formats — .nox files work with NorReview and can be exported to CSV, Excel, and third-party analysis software
Calibration and Compliance
- All Norsonic instruments require periodic IEC 61672-3 calibration — Norsonic Asia provides factory-authorized calibration services with full DANAK-traceable certificates
- Calibration interval: 1 year for ISO 17025 accredited laboratories; 2 years for field instruments in non-accredited applications
- Field calibration check: use an IEC 60942 Class 1 sound calibrator (94 dB or 114 dB) before and after each measurement session
- Loaner instruments available during calibration to minimize project downtime — contact Norsonic Asia for loaner availability
Availability & Regional Support
Available from Norsonic Asia — the factory-authorized distributor for ASEAN, GCC, and South Asia. Instrument supply includes 3-year manufacturer warranty, factory-authorized calibration services, operator training, and after-sales technical support.
- Typical lead time: 3–6 weeks from order confirmation (ex-factory Norway)
- Countries served: Singapore, Malaysia, Thailand, Vietnam, Philippines, Indonesia, UAE, Saudi Arabia, Qatar, Kuwait, India, Bangladesh, Sri Lanka, and more
- Technical support: English and Arabic; response within 1 business day
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