Expert calibration with support from lab to field

Sound & Acoustic Instrument Calibration

Professional calibration for sound and acoustic measurement equipment from leading manufacturers.

UKAS Available Traceable Available UK Laboratory Express Service
Request Quote Book Collection View UKAS Scope
Calibration Capability

Calibration for professional sound measurement equipment

Campbell Associates calibrates a wide range of professional sound measurement equipment used for environmental noise, occupational noise, building acoustics and general acoustic measurement. We support most makes and models of Class 1 sound level meters and a large range of Class 2 instruments. Equipment does not need to have been supplied by Campbell Associates; send us the make and model and our laboratory can confirm the available service.

Check Your Instrument Arrange collection
Service at a glance
UKAS Accredited calibration available
Traceable Traceable service options available
Express Priority turnaround available
Most Makes Broad manufacturer and model capability
Instrument Types

What we calibrate

We calibrate a wide range of professional sound and acoustic measurement equipment, from complete sound level meters and noise dosemeters to individual microphones, preamplifiers and environmental monitoring systems. We support most leading manufacturers, including both current and legacy instruments.

Can’t see your instrument? Send us the manufacturer and model and our calibration team will confirm capability.

Class 1 Sound Level Meters

Professional integrating sound level meters and acoustic analysers used for environmental, occupational, building and product-noise measurements.

Class 2 Sound Level Meters

Most professional Class 2 meters used for workplace, general survey and compliance applications; capability is model dependent.

Noise Dosimeters

Personal noise exposure meters and wearable dosemeters, including compatible Class 1 and Class 2 systems.

Measurement Microphones & Sets

1 inch, half-inch and quarter-inch measurement microphones where compatible with the laboratory fixtures and required method. Complete microphone and preamplifier combinations, MicSets and compatible measurement front ends.

Low-Frequency Acoustic Systems

Compatible measurement microphone systems requiring extended low-frequency response; exact accredited range to be confirmed.

Environmental Noise Monitors

Fixed, portable and remote noise-monitoring terminals using professional measurement microphones and Class 1 front ends.

Combined Noise / Dust Monitors

Multi parameter monitoring systems incorporating acoustic measurement alongside dust, weather or other environmental sensors, where the noise measurement channel can be calibrated separately.

Specialist Acoustic Instrumentation

Compatible low frequency acoustic systems, frequency analysers and other specialist sound measurement equipment. Contact our laboratory to confirm capability.

Head and Torso

Scope & Certification

Calibration Capabilities

Hello this is our capabilities

Instrument type UKAS Traceable Standards / scope Notes
Class 1 Sound Level Meters Yes Yes Verification to BS EN 61672-3 or BS 7580 Part 1 as appropriate.
Class 2 Sound Level Meters Yes Yes Most professional Class 2 instruments.
Measurement Microphones Yes Yes 1 in, 1/2 in and 1/4 in IEC BS EN 61094-4 measurement microphones; pressure sensitivity and relative frequency response.
Low-frequency microphone response Yes Yes Half-inch low-frequency relative response extended down to 2 Hz as UKAS accredited
Octave / third-octave filters Yes Yes
Reverberation-time functions Yes Yes
Recording / audio functions No Yes
Noise dosemeters Yes Yes
MicSets / Preamplifiers Yes Yes Capsules can be calibrated alone or with their own preamplifier as a MicSet; TEDS update available on request for compatible MicSets.

UKAS available where covered by our accredited scope. Class 1 or 2 calibrations to UKAS will need require a removable microphone capsule.

Most Makes & Models

We calibrate equipment from leading manufacturers

Can’t see your instrument? Ask our team
Norsonic Nor140; Nor145; Nor150. Consider legacy Nor131/Nor132/Nor139.
B&K B&K 2245; HBK 2255; B&K 2250; 2270; legacy 2260/2238 where serviceable.
NTI XL3; XL2; XL2-TA; associated M2230/M2340 microphone systems.
Larson Davis SoundAdvisor 831C; Model 831; SoundExpert 821ENV; Spartan 821IH; Spartan 721/821 variants; SoundTrack/SoundExpert LxT; 824; 820; 812; 720; Spartan 730 dosimeter.
01dB / Acoem SOLO; DUO; FUSION; FUSION 4G; CUBE; CUBE 4G; ACT-400; older SIP95/SOLO variants where serviceable.
Svantek SV 971A; SV 977D; SVAN 979; SV 973A; SVAN 958A; SV 104A noise dosimeter.
Cirrus Research Optimus+ / Optimus Green CR170 family; Red CR160 family; Yellow CR150 family; CR19x; CR260/261S; legacy CR800C; Quantum; doseBadge5.
Sonitus Systems EM2030 Class 1 noise monitor; noise channel in DM30N SiteSens.
Rion NL-43 Class 2; NL-53 Class 1; NL-63 Class 1 low-frequency; older NL-52/NL-62 families; NC-series ecosystems.
AVA Monitoring AVATrace M60, M80, M90 series.
Casella / CEL CEL-63x; CEL-62x; CEL-24x; dBadge / dBadge2 families; older CEL sound meters.
Castle Group Sound level meters, occupational meters and dosemeters.
Sound & Acoustic Instrument Calibration calibration
Accreditation & Traceability

UKAS 0789

Our calibration service includes inspection, testing and calibration of your equipment against appropriate reference standards, with clear certification provided on completion. Where applicable, we can provide UKAS accredited or traceable calibration, with options available to help minimise equipment downtime.

  • Pistonphones & sound calibrators
  • Sound level meters
  • Filters – sound level meter based octave and one third octave band filters
  • Reverberation time - one third octave band
  • Pressure sensitivity of 1”, ½” & ¼” microphones @ reference frequency
  • Electrostatic actuator response of 1” microphones, ½” microphones & ¼” microphones
  • Low frequency response of ½” microphones (with pressure equalisation vent exposed to sound field)
  • Calibration of insertion loss level and relative frequency response of sound level meter case reflections and/ or front end accessories.
  • Free-field sensitivity level and relative frequency response*. WSM type microphones, WSM microphone and pre-amplifier sets and/ or used with Sound Level Meters.
View UKAS Scope
Your Calibration Service

What is included

<p>Our calibration service includes inspection, testing and calibration of your equipment against appropriate reference standards, with clear certification provided on completion. Where applicable, we can provide UKAS accredited or traceable calibration, with options available to help minimise equipment downtime.</p>

  • Instrument inspection and functional checks before calibration.
  • Calibration against appropriate reference equipment and procedures.
  • Digital access to calibration certificates through the Campbell Associates certificate portal.
  • Advice where an instrument is outside tolerance or further investigation is recommended.
  • Collection and return options for mainland UK.
  • Reduced hire rates may be available while equipment is away for calibration, subject to availability.
Simple Process

From booking to return

01
Book

Request a quote or arrange collection for your equipment.

02
Receive

Your equipment is logged, inspected and prepared for calibration.

03
Calibrate

Our technicians calibrate the instrument to the agreed service level.

04
Return

Your equipment is returned with its calibration documentation.

Calibration Certificates

Your Certificates on Demand

Access, download and manage your Campbell Associates calibration certificates through our secure online certificate portal. Your calibration records are available whenever you need them.

Access Certificate Portal
Campbell Associates calibration certificate portal
Collection & Return

Collection & Return Made Easy

Arrange collection of your equipment from your premises and let us manage its journey to our calibration laboratories. Once calibration is complete, your equipment can be returned with the appropriate calibration documentation.

Book Collection
Campbell Associates calibration collection service
Campbell Associates calibration collection and laboratory service
Calibration With Campbell Associates

Calibration expertise built around your operation

Campbell Associates has provided specialist calibration services since 1999. Our UK based team combines laboratory expertise with practical support for organisations managing individual instruments, specialist measurement systems and larger equipment fleets.

  • Specialist UK laboratories

    Experienced calibration technicians working with professional sound, vibration, building acoustics and environmental measurement instrumentation.

  • Minimise equipment downtime

    Standard and express service options help keep critical measurement equipment available when you need it.

  • Fleet & contract support

    Talk to us about planned calibration programmes, multiple instruments, recurring requirements and contract pricing.

Keep your operation moving

Need equipment while yours is being calibrated?

Reduced hire rates of up to 50% may be available while your equipment is with us for calibration or repair, subject to equipment availability.

Request Calibration Quote Book Collection

Our experienced technicians support a wide range of makes and models, helping customers maintain accurate, reliable and compliant instruments with practical turnaround and technical support.

Customers who trust Campbell Associates

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Questions & Answers

Frequently asked questions

Do you calibrate sound level meters you did not supply?

Yes. Campbell Associates calibrates a wide range of manufacturers. Send the make and model and the laboratory can confirm the appropriate service.

Do you calibrate both Class 1 and Class 2 meters?

The site can state that Campbell supports Class 1 instruments and most professional Class 2 instruments, with the exact certificate option dependent on model and scope.

Can you provide UKAS calibration?

UKAS accredited calibration is available where the instrument and required measurements are covered by Campbell Associates’ current UKAS scope. Traceable calibration may also be available.

Can you calibrate the microphone as well as the meter?

Campbell’s published capability includes measurement microphone calibration and complete MicSet calibration for compatible systems.

What if the microphone is not removable?

Use a model-dependent note. The laboratory may be able to calibrate the complete instrument configuration, but the available tests can differ from a removable microphone system.

Can you calibrate older or discontinued meters?

Often, yes. Capability depends on condition, connection, microphone/preamp configuration and whether the required tests can still be performed.

Calibration Enquiry

Request a calibration quote

Tell us the manufacturer, model and quantity of instruments you need calibrated. Our team can confirm capability, certification options and the next steps.