Options - UKAS or Traceable

SOUND LEVEL METER

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.

- Additional Channels

- Frequency Filters

- Reverberation Time

Options - UKAS or Traceable 

CALIBRATORS

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.

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

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

Options - UKAS or Traceable

MEASUREMENT MICROPHONES

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.

- Microphone sets - Includes update of TED's data

- Low-frequency calibration 2-100Hz

- Low level calibration

Discounted Rate

BUILDING ACOUSTICS CALIBRATION PACKAGE - UKAS

- Sound Level Meter

- Filters

- Reverberation time

- Calibrator

- Tapping Machine

Accredited verification of the impact velocity, impact rate, stability and hammer profile as per BS EN IOS140-7:1998.

TAPPING MACHINE

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

Verification of dodecahedron loudspeaker directivity in accordance with ISO 16283-1, Annex A.

DODECAHEDRON LOUDSPEAKER

Requires matched power amplifier.

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.

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EAR SIMULATOR

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

Calibration of intensity probe.

SOUND INTENSITY PROBE

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

For single axis accelerometers providing measurement of sensitivity 80Hz or 160Hz as appropriate & a relative frequency response test at fixed frequencies over a total range of 10Hz to 5Hz (depending on accelerometer specification)

ACCELEROMETERS

Options

- Standard, Low or Wide Range frequency 

- Standard, Low or Wide Range Tri-axial 

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VIBRATION CALIBRATORS

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

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

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GEOPHONES

Geophone tested as complete unit on our dedicated shaker.

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VIBRATION METER

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.

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aIR QUALITY MONITORS

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.

 
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