Bruel & Kjaer 2250-L-D21 Class 1 Sound Level Meter
Overview
The Bruel & Kjaer 2250-L-D21 is a hand-held Class 1 sound level meter from the 2250 series, configured for workplace and environmental noise assessment. The 2250-L is the light version of the series, offering the core Class 1 sound level measurement functions in an efficient package for everyday noise surveys and compliance checks. The D21 order code identifies the specific configuration supplied.
The 2250-L light version covers the core noise measurement functions used in most surveys, keeping the instrument efficient and easy to operate. The D21 order code fixes the configuration at the factory, so the instrument arrives ready for the measurement tasks it was specified for. Seven Star LLC supplies the 2250-L with the accessories and calibration documentation needed for a compliant measurement programme. The instrument is aimed at organisations that need dependable Class 1 readings without the full analysis feature set, keeping operator training short and the survey workflow efficient. The light configuration remains fully compatible with the B&K calibrator and the PC reporting software.
Engineering and Design
As a Class 1 instrument, the 2250-L meets the IEC 61672-1 requirements for precision sound level meters, providing broadband measurement of the standard noise parameters used in occupational and environmental surveys. The instrument is battery powered and hand-held, with a clear display showing the measured level, and stores the results for transfer to the PC software. The measurement chain is calibrated with the matching acoustic calibrator to keep readings traceable.
Typical use begins with calibration of the microphone chain, followed by measurements at the defined positions for the required time intervals. The logged results are transferred to the analysis software for reporting, giving the Lp, Leq and statistical parameters required by the survey procedure. The light configuration keeps the field workflow simple while retaining the Class 1 accuracy needed for compliance documentation.
Typical use begins with calibration of the microphone chain, followed by measurements at the defined positions for the required time intervals. The logged results are transferred to the analysis software for reporting, giving the statistical parameters required by the survey procedure. The light configuration keeps the field workflow simple while retaining the Class 1 accuracy needed for compliance documentation. Battery life and memory capacity are checked before the measurement series, and the calibrator certificate is kept with the measurement records. For routine surveys, the instrument is stored in its carry case with the microphone protection cap fitted between uses. The instrument menu guides the operator through the measurement setup, and the most recent configuration is retained after power off. Training and demonstration units are available for teams adopting the 2250-L for the first time. The 2250-L display shows the active measurement together with the battery and memory status, and the backlight is adjustable for outdoor use. The instrument is supplied with the operator manual and the B&K starter documentation, and the microphone chain is verified with the calibrator before the first survey. The carry case keeps the meter and accessories organised for daily field use.
Key Features
- Class 1 sound level meter per IEC 61672-1
- Light configuration of the 2250 series
- Battery powered hand-held operation
- Data storage for reporting and archiving
- Calibrator-compatible measurement chain
- Suitable for daily noise surveys
Applications
The 2250-L-D21 is used for occupational noise exposure measurements, environmental noise surveys and industrial compliance checks. It suits EHS teams, acoustics consultants and plant maintenance departments performing regular noise assessments in the GCC region.
Specifications
| Product | Bruel & Kjaer 2250-L series sound level meter |
| Order code | 2250-L-D21 |
| Accuracy class | Class 1 (IEC 61672-1) |
| Application | workplace and environmental noise assessment |
| Measurement | broadband sound level parameters |
| Power | internal battery, field portable |
| Configuration | light version of the 2250 series |
Why Seven Star LLC
Seven Star LLC supplies Bruel & Kjaer sound level meters and acoustic instruments to EHS, laboratory and maintenance teams across Oman and the GCC. Every instrument is verified against the original B&K product and order code before your order is confirmed.
Technical Specifications
This unit is based on the Brüel & Kjær (HBK) Type 2250-L (“2250 Light”), the Class 1 sound level meter variant of the Type 2250 platform. The exact “-D21” ordering suffix on this listing does not appear in B&K’s own published Type 2250-L ordering nomenclature (which documents 2250-L-S and 2250-L-SC variants plus separate optional software modules), so Seven Star LLC confirms the exact configuration and accessory bundle against the customer’s requirement directly rather than assuming a specific meaning for this suffix.
Based on the documented Type 2250-L platform specifications, the meter complies with IEC 61672-1 (2002-05) Class 1, with a dynamic range exceeding 120dB (up to 140dB with the supplied microphone), and supports A, B, C, and Z frequency weightings alongside F, S, and I time weightings. Standard hardware includes the Type 4950 microphone, ZC-0032 preamplifier, and QB-0061 battery pack, with a Li-Ion battery rated for more than 8 hours of continuous operation. The instrument is rated for -10°C to +50°C operation and carries an IP44 ingress protection rating.
Applications
The Type 2250-L is used for occupational noise and hearing-conservation surveys, environmental noise monitoring under standards such as ISO 1996 and DIN 45645, and general product/QC noise testing — a Class 1 instrument suited to formal regulatory compliance measurements as well as day-to-day industrial noise assessments across Oman and the GCC.
Why Seven Star LLC
Seven Star LLC supplies genuine Brüel & Kjær acoustic instrumentation, including the Type 2250-L sound level meter, to consultancies, industrial safety teams, and EPC customers across Oman and the wider GCC, and confirms the exact accessory bundle, calibration certificate, and optional software modules (such as SLM, Tone Assessment, or Noise Monitoring) required before confirming an order.
Request a Quote for Bruel & Kjaer 2250-L-D21 Class 1 Sound Level Meter
Submit a formal inquiry through our RFQ page with the sound level meter order code 2250-L-D21, your required accessories and the noise standard you follow. We will confirm the configuration and respond with a formal quotation. | Inquiry Form
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