Sound Level Meter Calibration

Uniquely Yours
Custom Fashion wear Manufacturer

In our customization process, we value the communication of details with our clients to ensure a thorough understanding of your needs and expectations.

Uniquely Yours
Custom Fashion wear Manufacturer

In our customization process, we value the communication of details with our clients to ensure a thorough understanding of your needs and expectations.

Sound Level Meter Calibration

Every reading a sound level meter produces is only as good as its last calibration. A stable, traceable acoustic calibrator is what turns a number on a screen into evidence you can stand behind.

94 & 114 dB

Standard dual-level output at 1000 Hz — checking the meter at two points confirms it's linear, not just accurate at one level
2

Times to calibrate every session — immediately before and immediately after the measurement, not just one or the other

A Reading Is Only as Trustworthy as Its Calibration

A sound level meter can drift out of tolerance from a knock, a battery change, humidity, or simple age — often with no visible sign that anything's wrong. The only way to know a reading is accurate is to check the meter against a known, stable reference immediately before and after it's used.

Every acoustic calibrator is built to a class under IEC 60942 — Class 1 or Class 2 — and as a rule, a calibrator should match or exceed the class of the meter it's checking. A Class 2 calibrator can't properly verify a Class 1 meter, but a Class 1 calibrator works for either.

Aihua's sound level calibrators cover the full range — from a fast, everyday field check to multi-frequency verification for a more thorough lab-level review.

Two Levels of Calibration Coverage

01

Compliance-Grade Calibration

Environmental permits, legal disputes, and precision occupational surveys need a calibrator that matches Class 1 accuracy — and can also verify a Class 2 meter when needed.Link Text

AWA6021A Class 1 Acoustic Sound Calibrator
02

General-Purpose Field Calibration

Routine workplace noise checks, equipment surveys and day-to-day field work are well covered by a Class 2 calibrator matched to a Class 2 meter.

AWA6022A IEC Class 2 Sound Level Calibrator

Typical Workflow Calibrating a Sound Level Meter

1. Match the Class

Confirm the calibrator's class meets or exceeds the meter being checked before relying on the result.
2. Check Before

Fit the calibrator to the microphone and confirm the meter reads the calibrator's reference level before starting.
3. Measure

Carry out the measurement session with the meter, without adjusting or removing the microphone in between.
4. Check After

Repeat the calibration check afterward — if the reading has drifted, the session's data needs to be flagged and reviewed.

Recommended Product
All two are built to IEC 60942, with a dual-level 94 dB / 114 dB output at 1000 Hz for confirming linearity, not just a single point.

Compliance

Built Around the Standards Your Reports Reference

IEC 60942 Sound calibrators, Class 1 & Class 2

IEC 61672-1 Sound level meters

Common Questions About Sound Level Meter Calibration
1. Can I use a Class 2 calibrator on a Class 1 meter?

No — a calibrator needs to match or exceed the accuracy class of the meter it's checking. A Class 2 calibrator isn't precise enough to properly verify a Class 1 meter, but a Class 1 calibrator like the AWA6021A works fine for either a Class 1 or a Class 2 instrument.
2. Why does the calibrator output two levels — 94 dB and 114 dB?

Checking a single level only confirms the meter reads correctly at that one point. Two levels 20 dB apart confirm the meter's response is linear across a wider range, which is a much stronger check than a single-point verification.
3. Do I need to calibrate before every measurement, or is once a day enough?

Calibrate immediately before and immediately after every measurement session, not once at the start of the day. If the after-check shows drift, you know that specific session's data needs review — a single morning check wouldn't catch that.
4. What's the difference between a field check and a full recalibration?

A field check with a calibrator takes a minute and confirms nothing has drifted since the last verified state. A full laboratory recalibration — typically every 1–2 years — is a more thorough process that issues a traceable certificate and can catch a gradual drift a quick field check wouldn't reveal.

Not sure which instrument fits your site?
We look forward to hearing from you.

phone-5 Tel: +86-19012832378

Contact Aihua Instruments


Uniquely Yours Custom Fashion wear Manufacturer

Uniquely Yours Custom Fashion wear Manufacturer

Sound Level Meter Calibration

Sound Level Meter Calibration

94 & 114 dB

2

A Reading Is Only as Trustworthy as Its Calibration

Two Levels of Calibration Coverage

Compliance-Grade Calibration

General-Purpose Field Calibration

Typical Workflow Calibrating a Sound Level Meter

1. Match the Class

2. Check Before

3. Measure

4. Check After

Recommended Product All two are built to IEC 60942, with a dual-level 94 dB / 114 dB output at 1000 Hz for confirming linearity, not just a single point.

Residential PV Systemd

Residential PV System

Residential PV System

Explosion proof cobot

AWA6021A Class 1 Sound Level Calibrator

AWA6022A Class 2 Sound Level Meter Calibrator

Built Around the Standards Your Reports Reference

Common Questions About Sound Level Meter Calibration

1. Can I use a Class 2 calibrator on a Class 1 meter?

2. Why does the calibrator output two levels — 94 dB and 114 dB?

3. Do I need to calibrate before every measurement, or is once a day enough?

4. What's the difference between a field check and a full recalibration?

Not sure which instrument fits your site?We look forward to hearing from you.

Uniquely Yours
Custom Fashion wear Manufacturer

Uniquely Yours
Custom Fashion wear Manufacturer

Recommended Product
All two are built to IEC 60942, with a dual-level 94 dB / 114 dB output at 1000 Hz for confirming linearity, not just a single point.

Not sure which instrument fits your site?
We look forward to hearing from you.