Pulsar Nova 43 - Data Logging Sound Level Meter Class 1

Model: Model 43

A Class 1 highly accurate data logging sound level meter, part of the Nova range. Buy on its own as part of a complete noise measurement kit.

Features include:

  • Leq, Peak and C-A for hearing protection calculations using the HML method
  • Pause and back erase functions
  • Large dynamic measurement range 20-140 dB(A), plus 143 dB(C)
  • Compliant with IEC 61672


  • Use anywhere you need to measure noise levels with high accuracy. 
  • Workplace noise assessments, occupational & industrial hygiene and much more.
  • Product Details
  • Features & Benefits
  • Technical Data
  • Software & Accessories

Product Details

The Pulsar Nova range of decibel meters combines advanced noise measurement technology with ease of use, practical applications and durability. They are ideal for Workplace Noise, Industrial Hygiene, Construction and Entertainment noise measurement.

The Class 1 Pulsar Nova Model 43 data logging sound level meter is the perfect tool for the Health and Safety Practitioner. Data logging is now included as standard on this Model, which together with our AnalyzerPlus software allows the user to download their measurement data onto a PC or laptop for analysis and to create compliant noise measurement reports in a couple of clicks of the mouse!

This simple to use meter is:

  • Faster. Intuitive design and simultaneous measurement of all key noise measurement parameters means that it's easier to use
  • Stronger. Made with a durable metal case so it is hard-wearing
  • Compliant. Meets IEC 61672-1:2013 and the needs of Noise at Work regulations.
  • Longer. 30-hour battery life so you stay productive
  • Ideal for Workplace Noise, Industrial Hygiene, Construction and Entertainment noise measurement.

The Nova Range consists of six powerful sound level meters. These differ from other noise monitoring equipment, as they offer you the unique opportunity to add features either immediately or at a later date so that your sound level meter will always be suitable for your requirements. Compare the different Pulsar Nova Models within the range.

Find out more about the Pulsar Nova Range on our product video.

Features & Benefits

All of the features of the Class 1 Pulsar Nova Model 41 decibel meter with the addition of:

  • Data Logging. Transforms measurement data into compliant noise measurement reports within 2 clicks of the mouse.
  • Leq, Peak and C-A for the HML method of hearing protection calculation
  • Pause & back erase function
  • 20dB(A) to 140dB(A) & 143dB(C) dynamic measurement range
  • Colour coding for measurement status.


  • Workplace noise
  • Occupational & industrial hygiene
  • Construction noise measurement
  • Machinery noise testing
  • Entertainment noise measurement

Technical Data



  • Class 1 – Model 41, Model 43, Model 45
  • Class 2 – Model 42, Model 44, Model 46

Applicable Standards

  • IEC 61672-1:2013 Class 1 or Class 2, Group X
  • IEC 60651:2001 Type 1 I or Type 2 I
  • IEC 60804:2000 Type 1 or Type 2
  • IEC 61252:1993 Personal Sound Exposure Meters
  • ANSI S1.4 -1983 (R2006), ANSI S1.43 - 1997 (R2007)
  • ANSI S1.25:1991
  • 1:1 Octave Band Filters to IEC 61260 & ANSI S1.11-2004



  • Class 1 PM1 pre-polarized
  • Class 2 PM2 pre-polarized

Microphone Preamplifier

  • PA40 Removable Preamplifier

Measurement Range

  • 20dB -140dB RMS Single Range (143dB peak)

Noise Floor

  • <18dB(A) Class 1, <21dB(A) Class 2

Time Weightings

  • ‘F’ (Fast), ‘S’ (Slow) & ‘I’ (Impulse) all measured simultaneously

Frequency Weightings

  • RMS & Peak: A, C, & Z (un-weighted) all measured simultaneously

Frequency Bands

  • 10 1:1 Octave Bands: 31.5Hz to 16kHz


  • Three simultaneously measuring “virtual” noise meters.
  • Integrator 1 is preset to Q3 for Leq functions.
  • Integrators 2 & 3 can be configured with the following:
  • Exchange Rate: 3, 4 or 5dB
  • Threshold: 70dB to 120dB (1dB steps)
  • Time Weighting: None or Slow
  • Criterion Level: 70dB to 120dB (1dB steps)
  • Criterion Time: 1 to 12 hours in 1-hour steps

Integrator Quick settings (pre-set)

  • EU, OSHA HC & OSHA NC, OSHA HC & ACGIH, MSHA HC & MSHA EC, Custom 1 & Custom 2

Ln Statistical Values

  • 14 independent statistical Ln values calculated from 1/16th LAF
  • 7 are preset to L1.0, L5.0, L10.0, L50.0, L90.0, L95.0 & L99.0
  • 7 user-defined Ln values

Time History Data Rates (Global settings)

  • 10ms, 62.5ms, 125ms, 250ms, 1/2 sec, 1 sec, 2 sec (user selectable)

Language options

  • English, French, German, Italian, Spanish as standard
  • NB. Other language options available on request.




  • 6 x AA

Battery life

  • Typically 30 hours with Alkaline AA
  • Typically 50 hours with Lithium AA
  • Rechargeable battery life is dependent upon the battery type and screen brightness


External power

  • 5v-15v via Multipin I/O socket


  • 440g without batteries


  • 280mm x 80mm x 42mm with preamp and microphone



  • USB 2.0 Mini-B to PC
  • AC output via 3.5mm stereo jack
  • AC & DC output via Multipin I/O socket

Tripod Mount

  • 1/4” Whitworth socket


  • Die-cast aluminium with silicon elastomer keypad and soft touch back


  • High-resolution anti-glare OLED display
  • Ambient light sensor
  • Illuminated keypad

Supplied Accessories

  • Windshield, Wrist Strap, USB Download Cable,
  • AnalyzerPlus software, AA Batteries


Conformance, logging and storage

Conformance Logging and Storage (where available)


  • Operating Temperature: -10°C to +50°C
  • Storage Temperature: -20°C to +60°C
  • Humidity: Up to 95% RH Non-Condensing

Electromagnetic performance

  • IEC 61672-1:2002 & IEC 61672-2:2003
  • Except where modified by EN 61000-6-1:2007
  • & EN 61000-6-1:2007


  • 4GB removable memory card

Audio Note Recording

  • A spoken note (up to 30 seconds) attached to measurements

Audio Recording

  • Manual recording
  • Quality – 48kHz/32bit WAV format

Measurement Control

  • The unit can be set to record and store data over fixed times of:
  • 1 min, 5 min, 10 min, 15 min, 30 mins, 1 hour, Lden (Day, Evening, Night)
  • Automatic Synchronisation & Repeat options
  • Pause
  • Back Erase with user-selectable duration (via AnalyzerPlus software)


Model-specific measurement parameters

Model 41 & Model 42: Model 43 & Model 44: Model 45 & Model 46:

Standard Measurement Parameters

  • Lxy, Lxy Max, Lxy Min
  • Time, date & duration of measurement
  • Extra measurement and stored functions available

Standard Measurement Parameters

  • Lxy, Lxy Max, Lxy Min
  • Lxeq, LCPeak, LZPeak, LAPeak LCeq-LAeq, LxE, LAIeq
  • Graph of Short LAeq, LCPeak
  • Time, date & duration of measurement
  • Extra measurement and stored functions available.


Standard Measurement Parameters

  • Lxy, Lxy Max, LxyMin
  • Lxeq, LCPeak, LZPeak, LAPeak LCeq-LAeq, LxE, LAeqT
  • Graph of Short LAeq, LCPeak
  • Measurement Run Time
  • Integrators 2 & 3: TWA, Dose %, Est Dose %
  • Real-Time 1:1 Octave Bands (Graphical & Numeric)
  • 14 Statistical Values (Ln)

Stored Parameters - Model 45 & Model 46

  • LxyMax & Time History of LxyMax
  • LAeq, LCeq, LZeq, LCPeak, LZPeak, LAPeak, LAIeq
  • Time History of LAeq, LCeq, LZeq, LCPeak, LZPeak, LAPeak, LAIeq
  • Integrators 2 & 3: LAVG , TWA. % Dose
  • Time History of LAVG
  • 1:1 Octave Bands: Overall Leq & Leq Time History for each band
  • Ln Values: 14 independent statistical values
  • Audio recording during measurement
  • Time, date & duration of measurement
  • Where x means the three frequency weightings A, C and Z and y means the three time weightings ‘S’ (Slow), ‘F’ (Fast) and ‘I’ (Impulse). All weightings simultaneously measured where appropriate.
  • Other functions may be calculated by the AnalyzerPlus software.

Software & Accessories

The Models 43 dB meter comes supplied with:

  • 1 year warranty (extendable to 7 years*)
  • User manual
  • Valid calibration certificate
  • AA Batteries (6)
  • Wrist strap
  • 'AnalyzerPlus' - Pulsar download analysis and reporting software
  • USB small download cable

* To qualify for the 7 year warranty, you will need to send your Pulsar Nova sound level meter back to us annually for recalibration and service where upon the warranty is extended for a further 12 months for up to 7 years.

Also available as a noise measurement kit containing:

  • Model 43K (Class 1) meter
  • Model 105 (Class 1) Acoustic Calibrator
  • WS90 Windshield
  • K4 Hard Kit Case
  • Wrist Strap
  • AA batteries
  • Calibration Certificates for the sound level meter and acoustic calibrator and user manual
  • Pulsar ‘AnalyzerPlus’ download, analysis and reporting software
  • USB small download cable

An outdoor weatherproof, dustproof, outdoor kit is available as an additional accessory which enables the user to measure noise outdoors over the mid- to long-term.

The Pulsar Nova range of decibel meters can be supplied with a number of input and output cables, contact us for details.