Verification of sound level meters to BS EN 61672/3 or BS 7580 part 1 as appropriate. Includes a full calibration of the measurement microphone; this covers sensitivity at 250Hz, relative frequency response 100-20kHz and polarised self-capacitance. UKAS will be accredited verification with conformance statement.

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- Additional Channels

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- Frequency Filters

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- Reverberation Time

Verification of sound calibrators to BS EN IEC 60942 in half inch configuration; this provides the sound pressure level, level stability, frequency stability and distortion.

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- Additional level or frequency (separate certificate supplied for each level & frequency)

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- Multi-level & multi-frequency calibrators - B & K 4226, GenRod 1986

Calibration of standardised measurement microphones; includes three independent measurements of open-circuit sensitivity, three independent measurements of polarised capacitance & a relative frequency response within the range 100Hz-20Hz. Includes the update of TED's data within the set.

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- Microphone sets - Includes update of TED's data

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- Low-frequency calibration 2-100Hz

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- Low level calibration

- Sound Level Meter

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- Filters

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- Reverberation time

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- Calibrator

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- Tapping Machine

Meets the requirements of UKAS LAB23 for floor tapping machine calibration. Standard service includes cleaning of the device as required before calibration.

Requires matched power amplifier.

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Campbell Associates calibration laboratory have developed a verification procedure to comply with these requirements; it mounts the dodecahedron speaker on a rotating spigot in an anechoic chamber which is then rotated through 360° passed a measurement microphone.  Measurements are made for each 1°rotation and the gliding arc calculated and compared with the specifications.  The example shows the effect of faulty speakers, i.e. no output, damaged speaker, such as scraping coils or damaged cone, and finally the return to normal operation after repair.

Calibration of ear simulators to BS EN ISO 60711 or 60318 as appropriate.

Included verification of the sensitivity, frequency response and capacitance of each measurement microphone and the measurement of their relative phase response.

Options

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- Standard, Low or Wide Range frequency 

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​- Standard, Low or Wide Range Tri-axial 

Calibration of level, level stability, frequency, frequency stability & distortion of most types of portable single level and frequency vibration calibration units.

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Demonstrates conformance to BS EN ISO 8041 Annexe A as appropriate.

Geophone tested as complete unit on our dedicated shaker.

Single-channel portable vibration meter - Electrical verification of frequency and amplitude response of the instrument. Includes dynamic check of sensitivity if performed in conjunction with transducer calibration.

Conformance check by comparison 

We have a fully maintained reference station at our offices.  This is measuring Particulates, NOx and Ozone.

Replacement of sensors

Replace your old particle engines/ counters with new or calibrated service exchange sensors.

Calibration with reference gases

Option for calibration of NO2 using reference gas canisters of certified concentrations.