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Acoustic Calibrators > SV 33B

Class 1 Sound Calibrator SV 33B

5.0 (20 Reviews)

The SV 33B is a Class 1 acoustic calibrator designed to verify Class 1 and Class 2 sound level meters and dosimeters fitted with ½″ microphones. It produces a stable 114 dB calibration signal at 1 kHz, continuously regulated by an onboard microprocessor. The system uses data from an integrated piezoresistive reference sensor along with built-in pressure and temperature sensors to ensure precise and consistent calibration performance.

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The SV 33B is a Class 1 acoustic calibrator designed for precise field calibration of sound level meters and noise dosimeters. Operating at a stable 114 dB sound pressure level, it meets IEC 60942 requirements and provides dependable reference signals for routine occupational and environmental noise measurements.

Built for everyday professional use, the SV 33B combines reliable output stability, low distortion, and robust environmental tolerance. Its straightforward operation and compatibility with standard microphone sizes make it a practical solution for technicians who require consistent, compliant calibration in field conditions.

Sound measurements features
Sound Pressure Level (SPL)	114 dB
IEC 60942:2003 Accuracy	Class 1
SPL Tolerance	± 0.3 dB
Frequency Tolerance	± 0.2 %
Total Harmonic Distortion (THD)	< 0.75 %
Temperature Range	-10 °C to +50 °C
Atmospheric Pressure Range	65 kPa to 108 kPa
Humidity Range	25 % to 90 % RH
Effective Load Volume Sensitivity	0.00027 dB / mm³
Calibrated Microphones	1/2” and 1/4” with SA 30 adapter

Other Features & Highlights

Complies with IEC 60942:2017 Class 1 accuracy standards.
Stable 114 dB reference tone at 1 kHz.
Automatic signal regulation via onboard microprocessor.
Compatible with standard ½″ microphones.

Downloads

Data Sheet
PDF, Technical Specs

User Manual
PDF, Instructions

Applications

Sound Measurements

Sound level meter calibration for accurate results

Acoustic calibrators produce a defined sound pressure level and frequency, providing a reference standard to verify and adjust the accuracy of sound level meters.

Inteccon - Features

Key Features

The SV 33B is a Class 1 acoustic calibrator built for accurate and reliable field calibration of sound level meters and dosimeters. With automatic signal control and environmental compensation, it ensures stable calibration under varying conditions.

High-accuracy Class 1 Calibration

IEC 60942:2017 compliant Class 1 calibrator generating a precise 114 dB reference signal at 1 kHz.

Automatic Signal Control

Microprocessor-based system continuously monitors and stabilises output without manual level adjustments.

Environmental Compensation

Integrated pressure and temperature sensors maintain calibration accuracy under changing ambient conditions.

Portable Field-ready Design

Compact, lightweight construction with ergonomic housing supports reliable use in both field and laboratory settings.

Reliable Battery-powered Operation

Battery-powered design ensures consistent calibration performance without external power requirements.

Traceable Calibration Certification

Supplied with a calibration certificate traceable to recognised standards for compliant acoustic measurements.

FAQ Component

Frequently asked questions

What is a sound level calibrator used for?

A sound level calibrator is used to verify the accuracy of a sound level meter before and after measurements by generating a precise tone, typically 94 dB at 1 kHz.

How often should I calibrate my sound level meter?

You should check your meter’s calibration daily before and after use, and have it professionally calibrated every two years for certified accuracy.

Can I rely on the meter’s internal calibration check?

No, because internal checks don’t test the microphone, the most sensitive part of the system so an external calibrator is essential.

Why is regular calibration important?

Calibration ensures that environmental factors or wear haven’t affected your meter’s accuracy, maintaining reliable and compliant noise measurements.

Which sound level meters can be calibrated using the SV 33B?

The SV 33B is compatible with Class 1 and Class 2 sound level meters and dosimeters equipped with ½″ microphones.

How often should the SV 33B be verified?

Svantek recommends verification at an accredited laboratory every two years to maintain compliance and traceable accuracy.

Does the SV 33B require manual adjustment during calibration?

No, its automatic signal regulation eliminates the need for manual corrections, ensuring precise and repeatable calibration results.

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Serving customers in Florida, Maryland, Delaware, New Jersey, New York, Connecticut, Rhode Island, Massachusetts, Vermont, New Hampshire & Maine. Local technical support for SVANTEK instruments.