Nor1255 Sound Calibrator
Class 1 precision sound calibrator with single 114 dB output at 1000 Hz for field calibration.
Overview
The Nor1255 is a precision Class 1 sound calibrator providing accurate reference levels for field verification and calibration of sound level meters and measurement microphones. Compliant with IEC 60942:2017 Class 1 requirements, with type approvals from PTB (Germany), LNE (France), and BEV (Austria), the Nor1255 delivers a certified 114.0 dB ± 0.2 dB output at 1000 Hz for traceable field calibrat…
Key Features
- IEC 60942:2017 Class 1 accuracy
- 94 dB and 114 dB dual output levels
- 1 kHz reference frequency
- Type approved by PTB, LNE, and BEV
- 1-inch and 1/2-inch microphone compatible
- Battery powered with over 10 hours operation
- Traceable calibration with certification
Applications
- Pre and post measurement field calibration checks
- Sound level meter verification per IEC 61672
- Laboratory calibration and quality assurance
- Environmental noise monitoring calibration
- Building acoustics testing calibration
- Occupational noise assessment calibration per ISO 9612
Technical Specifications
- Standards: IEC 60942:2017 Class 1
- Output Level: 114.0 ± 0.2 dB
- Frequency: 1000 ± 1 Hz
- Microphone Size: 1" (1/2" with adapter)
- Distortion: Max 2.0%
- Battery: 2 × AAA, >10 hours
- Weight: 125 g
Frequently Asked Questions
- What microphone sizes are compatible?
The Nor1255 is designed for 1-inch measurement microphones and includes an adapter for 1/2-inch microphones, which are standard on most professional sound level meters. - How often should the calibrator be recertified?
Annual recertification at an accredited laboratory is recommended to maintain traceable accuracy and comply with quality management requirements for regulatory noise measurements. - What is the difference between 94 dB and 114 dB levels?
The dual output levels allow verification at both normal measurement levels (94 dB) and higher levels (114 dB) to confirm instrument linearity across a 20 dB range.
Application Guide
The Nor1255 Sound Calibrator belongs to the Norsonic Calibration range. See the Calibration application guide for system configuration, compatible accessories, and applicable measurement standards.
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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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