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HBK 2245 User Manual

With work noise partner
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B&K 2245
and HBK 2255
with Work Noise Partner
User Guide
for Version 1.6
BN 2377–18
Copyright © 2025 Hottinger Brüel & Kjær A/S. All rights reserved.
2025.0

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Summary of Contents for HBK 2245

  • Page 1 B&K 2245 and HBK 2255 with Work Noise Partner User Guide for Version 1.6 BN 2377–18 Copyright © 2025 Hottinger Brüel & Kjær A/S. All rights reserved. 2025.0...

  • Page 3: Table Of Contents

    Web server display Connect the mobile app to the instrument CONFIGURE YOUR INSTRUMENT Access instrument settings on the instrument Access instrument settings on the mobile app Setup mode Input settings TEDS, Microphones and HBK 2255 Transducer database Units Measurement control Broadband parameters...
  • Page 4 Table of contents Sound level parameters Vibration parameters Spectrum parameters Sound level parameters Vibration parameters Statistical parameters Audio or signal recording Display settings Regional settings Power management Data management Network settings External devices Voltage output Metadata Lock the settings CALIBRATION CHECK How to perform a calibration check Calibration history Calibration settings...
  • Page 5 Table of contents Delete annotations POST-PROCESS USING THE PC APP PC application GUI Application menu Create a project using the PC application Open a project Import data Project browser Use a dosimeter Hearing protection database Measurements Tasks Exposure groups Jobs Review annotations in the PC application Export a report TERMINOLOGY...

  • Page 6: What's New

    B&K 2245 and HBK 2255, which contain the release notes for all firmware versions. For the mobile app: View release notes where you download the app (App Store® or Google Play™).

  • Page 7: Overview

    The PC application also has facil- ities for applying hearing protection and using a dosimeter. Licences B&K 2245 and HBK 2255 are type-approved sound level meters (SLM). The licences installed on the instrument control its functionality and to which applications it can connect.
  • Page 8 Overview BZ-7300: Noise Partner This licence enables you to make simple, broadband measurements, to make general-purpose sound pressure level measurements, and to make basic occupational, product and environmental measurements. Measure broadband parameters. Connect to Noise Partner mobile apps (for iOS and Android™) and PC application. BZ-7301: Enviro Noise Partner This licence enables you to measure and report on environmental noise concerns.

  • Page 9: About The Instrument

    Overview BZ-7350: Building Acoustics Partner (HBK 2255 only) This licence enables you to perform sound insulation and room background noise tests. Measure broadband parameters. Perform spectrum analysis (1/1- and 1/3-octave). Perform reverberation time measurements. Average and log intervals of broadband and/or spectral data (logging mode).

  • Page 10: About The Mobile App

    Overview The instrument takes audio recordings. Standards Menu location: Menu > About > Metrology > Standards. Here you will see the complete list of standards to which the instrument conforms. About the mobile app The mobile app interfaces with the instrument, which enables you to control the instrument as though you have it in your hand.

  • Page 11: System Requirements

    Overview System requirements The mobile app An iOS phone or tablet See supported iOS versions for current app version in the App Store®, under Work Noise Partner > Information > Compatibility. The PC application System Requirements: Windows® 10 or 11 (64-bit) operating system Microsoft®...

  • Page 12: Service And Support

    Overview Service and support Standard warranty B&K 2245 has a two-year warranty that is valid from the delivery of the product. HBK 2255 has a two-year warranty that is valid from the delivery of the product. Updates Instrument Update firmware and install new licences over the Internet.

  • Page 13: The Instrument

    THE INSTRUMENT Hardware interface The microphone and preamplifier are at the top of the instrument. B&K 2245 has a removable microphone cartridge and a built-in microphone preamplifier. HBK 2255 has a removable microphone preamplifier and supports TEDS (transducer electronic data sheet).
  • Page 14 The instrument is the stop/reset button. Press the button once to stop a measurement. At this point, averaged measurement parameters will stop updating and you can review the results. Press the button again to clear the results and reset the instrument for the next measurement.

  • Page 15: Instrument Gui

    The instrument The light ring is colour-coded to reflect the status of the instrument. The light ring is solid green while measuring. The light ring flashes yellow slowly while idle or quickly while paused (measuring). The light ring flashes red quickly for intermittent overloads. The light ring is solid purple for latched overloads.
  • Page 16 The instrument When idle, the instrument displays the current time (to the left) and input settings (to the right). : Indicates that the clock is estimated to be more than 2 s wrong. : Indicates that Sound field is set to Free-field and there is not a windscreen. : Indicates that Sound field is set to Free-field and there is a windscreen.
  • Page 17 The instrument In the middle is the measurement display. There are views for broadband para- meters (SLM view and List view), spectrum parameters (Spectrum view), logging pro- files (Profile view) and a view for information about your data (About data view). Press briefly to scroll through measurement displays.
  • Page 18 The instrument Spectrum view displays the 1/1- or 1/3-octave frequency analysis of spectrum para- meters. Press and hold to move the cursor in the display. The readout above the graph shows the location of the cursor and its value. Press and hold to auto-scale the Y-axis to fit the data.

  • Page 19: Charge The Battery

    The instrument The menu Use the buttons on the instrument to interact with the menu. : Open / close the menu; open a response dialog; confirm a setting in a response dialog; enable / disable parameter selection boxes. : Navigate up a list; increment a value in a response dialog. : Navigate down a list;...

  • Page 20: Power Consumption

    The instrument Power consumption Settings for the screen and wireless configuration can have a noticeable effect on the instrument's power consumption. The type of measurement you perform will not have a large effect on battery consumption. To manage power consumption, you can modify these settings: System settings >...
  • Page 21 Also, water may enter the instrument body if, for example, the instru- ment is submerged in water. On B&K 2245, the microphone cartridge attaches to (and detaches from) the microphone preamplifier, which is an integral part of the instrument body.

  • Page 22: Download The Apps

    At least one available USB port Microsoft Office 2016 or later Procedure: 1. Go to: www.hbkworld.com/en/services-support/support/support-bksv/downloads/2245-2255-downloads/2245- 2255-software. 2. Click Install Work Noise Partner Software to start the download. 3. Once the download is complete, double-click the file (Setup.exe) to start installation.
  • Page 23 Download the apps Updates You will be informed of updates via the application.

  • Page 24: Connect Devices

    CONNECT DEVICES Communication between the instrument and the devices running the applications is an essential part of using the instru- ment. Once you understand the ways in which the devices can communicate, you will be able to change connections to suit your circumstances.

  • Page 25: Use The Instrument As A Hotspot

    Connect devices Use the instrument as a hotspot Connect your mobile device and / or PC to the instrument's hotspot so that the devices can communicate. 1. On the instrument, go to: System settings > Network settings > Wi-Fi settings > Wi-Fi mode. 2.

  • Page 26: How To Connect Remotely Via An Ipv4 Address

    Connect devices Is your ISP blocking any instrument ports? ✐ Note: The instrument uses ports 80, 443 and 8700 to 8720. It is not possible to change these ports. There- fore, remote connection is not possible if your ISP blocks any of those ports. What you will need: An instrument that is connected to the network (either by Wi-Fi®...

  • Page 27: Web Server Display

    Connect devices ✐ Note: You can also test the setup using the PC application. Click to open the import dialog then click and select Add instrument from IP address. How to connect remotely via an IPv6 address You do not have to set up port forwarding when using an IPv6 address. To test the remote connection, try to connect to the instrument from a different network.

  • Page 28: Connect The Mobile App To The Instrument

    Connect devices You will need: Your instrument A computer or mobile device with Wi-Fi® and a web browser installed Procedure: 1. Go to: System settings > Network settings > Web server display. 2. Select Enabled. 3. Connect the instrument and the device running the web browser to the Internet. 4.

  • Page 29: How To Add The Instrument Manually

    Connect devices 4. Tap on your instrument to connect. Hint: Give the instrument a nickname (System settings > Network settings > Nickname). A nickname can make it easier to find your instrument in a list. Also, nicknames are fun! 5. The mobile app will prompt you to connect the mobile device and the instrument to the same local network. You have two options: Connect to network: The instrument and the mobile device connect to the Wi-Fi access point of your per- sonal or work network.

  • Page 30: Troubleshooting Connection Problems

    Connect devices Troubleshooting connection problems Check the network settings on the instrument (System settings > Network settings). Check that Wi-Fi is enabled on the mobile device. Make sure that the two devices are within range. Try turning Wi-Fi off and on again on the mobile device. Try re-entering the network password on the mobile device.

  • Page 31: Configure Your Instrument

    To handle such different applications and to make it easier to set up and use the instrument, HBK 2255 has different setup modes. The Setup mode setting filters the measurement settings on the instrument to provide a dedicated user interface for the different types of applications.

  • Page 32: Input Settings

    B&K 2245 has a built-in preamplifier and is designed for use with Microphone Cartridge Type 4966. Type 4966 is pre- polarized, so it can be used with battery-operated equipment such as B&K 2245, and is optimized for use in free-field environments. By default, the instrument is set up to use the attached Type 4966 microphone cartridge. If you change the microphone cartridge, you will need to change the Microphone setting.

  • Page 33: Sound Field

    HBK 2255 is designed to make vibration measurements using a CCLD adaptor (charge preamplifier) and an accel- erometer. The accelerometers in the accelerometer database populate the options for the Accelerometer setting. Before you can use an accelerometer with HBK 2255, you need to add the accelerometer to the transducer database. Transducer database for more information about the database.

  • Page 34: Frequency Range

    Configure your instrument Frequency range HBK 2255 has a few options for extending the lower limit of the frequency range of your measurements. The options available will vary according to the licences installed and enabled on your instrument. Normal Extended...
  • Page 35 Configure your instrument Microphones supported by HBK 2255 Below is a list of all Brüel & Kjær microphone cartridges, microphone preamplifiers, and microphone cart- ridge/preamplifier combinations which can be used with HBK 2255. 1/2-inch Microphone Preamplifier Type 2669 1/4-inch Microphone Preamplifier Type 2670...

  • Page 36: Transducer Database

    For vibration measurements, the Accelerometers setting is the database for accelerometers. Microphones B&K 2245 has a built-in microphone preamplifier, but you can use different microphone cartridges with the instrument. To use a different microphone cartridge with the instrument, you will first need to add the microphone cartridge to the microphone database manually.
  • Page 37 HBK 2255 is capable of vibration measurements using a CCLD adaptor (charge preamplifier) and an accelerometer. To use an accelerometer with HBK 2255, you need to add the accelerometer and preamplifier (as a single transducer) to the transducer database manually.
  • Page 38 You cannot delete the transducer that the instrument is currently set to use. For HBK 2255, the ability to edit or delete microphones in the database depends on the TEDS scenario which applies to the attached microphone/preamplifier pair. If TEDS only contains information about the microphone preamplifier, it is possible to edit information about the microphone cartridge and/or delete the microphone.

  • Page 39: Units

    Configure your instrument Units The Units setting controls the display of measurement units. The Units setting is enabled if Setup mode = Vibration. See Setup mode for more information. Engineering units Use the setting to display parameters in engineering units or in dB. Yes: Use engineering units.

  • Page 40: Broadband Parameters

    (Leq, Lmax, Lmin, etc.) with frequency weightings and time weightings (F, S or I). B&K 2245 has frequency weightings A, B, C and Z. The instrument can make measurements with up to two frequency weightings simultaneously.
  • Page 41 Configure your instrument How to set sound level parameters on the instrument 1. Enable a frequency weighting. a. Press to navigate to a Weighting box. b. Press to scroll through the frequency weightings. 2. Enable sound level parameters. a. Press to navigate to a parameter.
  • Page 42 Configure your instrument How to set sound level parameters using the mobile app 1. Tap 1 to enable parameters for the first frequency weighting. The instrument can measure broadband parameters with multiple simultaneous frequency weightings, you will enable parameters for each frequency weighting separately. 2.
  • Page 43 Configure your instrument Exponentially averaged levels Exponentially averaged sound levels provide easy-to-read values. A number of parameters are derived from exponential averaging: Lmax = maximum sound level This parameter gives you the highest time-weighted sound level that occurs during the measurement time. Lmax is often used in conjunction with another noise parameter (for example, Leq) to ensure a single noise event does not exceed a limit.
  • Page 44 Configure your instrument About frequency weightings Frequency weightings mimic how humans hear sound. A-weighting Represents the human ear’s response at low to medium sound levels Equal loudness curve: 40 dB The most commonly applied frequency weighting Can be used for all sound levels B-weighting Represents the human ear’s response at medium sound levels Equal loudness curve: 70 dB...

  • Page 45: Vibration Parameters

    Setup mode = Vibration. The different parameters that you can measure are combinations of the parameters with integration and frequency range options. HBK 2255 has integration a (acceleration). The frequency range options depend on the type of integ- ration. The instrument can make measurements with one integration filter in one frequency range.
  • Page 46 Configure your instrument How to set vibration parameters on the instrument 1. Enable vibration parameters. a. Use the arrow keys to navigate to a parameter box. b. Press to enable / disable parameters. 2. Navigate to 3. Press to close the parameter selection menu. ✐...
  • Page 47 Configure your instrument Fmin, Smin = minimum vibration level Minimum time-weighted acceleration, velocity or displacement level measured with Linear frequency weighting and F or S time weighting. Fmin and Smin give you the lowest level that occurs during the measurement time. Other names for the para- meters are Fast min and Slow min.

  • Page 48: Spectrum Parameters

    Configure your instrument S = 1 s time constant, decay of 4.3 dB/s The relatively slow rise and decay of this time weighting means it will smooth the variations in the vibration sig- nal. When choosing a time weighting to use, ask yourself if you want to track or smooth the variations in vibration levels over time.

  • Page 49: Sound Level Parameters

    B&K 2245 has frequency weightings A, B, C and Z. The instrument can perform spectral analysis with one frequency weighting. HBK 2255 has frequency weightings A, B, C, and Z. The instrument can perform spectral analysis with up to two fre- quency weightings simultaneously.
  • Page 50 Configure your instrument 2. Enable a frequency weighting. a. Press to navigate to the Weighting box. b. Press to scroll through the frequency weightings. 3. Enable sound level parameters. a. Press to navigate to a parameter. b. Press to enable / disable parameters. 4.
  • Page 51 4. Tap Done to return to the project menu or tap Back to return to the instrument settings menu. About bandwidth The bandwidth of the frequency analysis. You can choose 1/3-octave (third-octave) or 1/1-octave (full-octave). 1/3-octave will give you a finer analysis of the frequency than 1/1-octave. HBK 2255 B&K 2245 Normal Extended Very low 1/3-octave 12.5 Hz to 20 kHz...
  • Page 52 Configure your instrument B-weighting Represents the human ear’s response at medium sound levels Equal loudness curve: 70 dB C-weighting Represents the human ear’s response at fairly high sound levels Equal loudness curve: 100 dB Mainly used to assess peak values of high sound pressure levels (LCpeak) ✐...

  • Page 53: Vibration Parameters

    Setup mode = Vibration. The different parameters that you can measure are combinations of the parameters with integration and frequency range options. HBK 2255 has integration a (acceleration). The frequency range options depend on the type of integ- ration. The instrument can perform frequency analysis for one bandwidth with one integration filter in one frequency range.
  • Page 54 ✐ Note: The integration and frequency range settings are fixed. About bandwidth The bandwidth of the frequency analysis. You can choose 1/3-octave (third-octave) or 1/1-octave (full-octave). 1/3-octave will give you a finer analysis of the frequency than 1/1-octave. HBK 2255 B&K 2245 Normal Extended Very low 1/3-octave 12.5 Hz to 20 kHz...
  • Page 55 Configure your instrument Time-weighted parameters Fmax, Smax = maximum vibration level Maximum time-weighted acceleration, velocity or displacement level measured with Linear frequency weighting and F or S time weighting. Fmax and Smax give you the highest level that occurs during the measurement time. Other names for the para- meters are Fast max and Slow max.

  • Page 56: Statistical Parameters

    The Statistical parameters settings allow you to set up the instrument to sample measurement data for statistical ana- lysis. Broadband statistics can be calculated for measurements made with B&K 2245 or HBK 2255. Menu location: Measurement settings > Statistical parameters. Broadband statistics Broadband statistics can be calculated for single measurements.

  • Page 57: Audio Or Signal Recording

    B&K 2245 can record listen-quality audio while measuring. HBK 2255 can record listen-quality audio while measuring. If the BZ-7451 licence is installed and enabled on HBK 2255, the instrument can record analysis-quality audio while meas- uring. The sound signal is recorded as 24 bit samples at 65536 Hz.

  • Page 58: Display Settings

    Configure your instrument Display settings Display settings control how the instrument screen looks (brightness, colour scheme), the brightness of the light ring, and the data that is displayed. Menu location: Display settings. Screen brightness Screen brightness controls how bright the screen on the instrument is. You can choose from six levels of brightness. Light ring brightness Light ring brightness controls the brightness of the light ring on the instrument.

  • Page 59: About Data View

    The Parameter setting defines the parameter for the spectrum display; that is, the display of the sound level for each frequency band. B&K 2245 can display one spectrum parameter. HBK 2255 can display two parameters. Parameter (Profile view) The Parameter setting defines the parameter for the profile display; that is, the display of logged sound levels by time.

  • Page 60: Regional Settings

    Configure your instrument To enable latitude and longitude coordinates in About data view: 1. Enable Service mode on the instrument. a. Press briefly to open the menu. b. Go to: System settings > Advanced settings > Service mode. c. Select Enabled. 2.

  • Page 61: Measurement Units

    Wind speed: Select SI for m/s or US/UK for mph. Temperature: Select SI for °C or US/UK for °F. ✐ Note: Wind speed and temperature data require a weather station. HBK 2255 works with weather station kits MM-0316-A and MM-0256-A, which are based on Vaisala weather stations. See External devices for more information.

  • Page 62: Data Management

    Configure your instrument Data management The Data management settings include settings for storing a backup and for data retention. Go to: System settings > Data management. DATA MANAGEMENT Backup settings > Data retention Manual Retention period 180 days Data storage on the instrument Measurement data is stored automatically on the internal storage disk when you stop a measurement.
  • Page 63 Configure your instrument Store a backup on network storage You will need: Network storage Your instrument ✐ Note: If you are using NAS, you will need to set it up according to the manufacturer's instructions first. Procedure: 1. Go to: Backup settings > Backup. 2.

  • Page 64: Network Settings

    Configure your instrument Network settings Network settings is a group of settings that enables you to control your local (or remote) network connections. There are also settings to give the instrument a nickname, to protect it with a password and to connect to the instrument using a web browser.
  • Page 65 Configure your instrument Add a password using the instrument 1. Go to: System settings > Network settings 2. Select Password. ✐ Note: If the instrument is already password protected, you will need to confirm that you want to enter a new password.

  • Page 66: Reset Network Settings

    1. Select Reset network settings. 2. Select Yes. External devices For HBK 2255, the External devices setting includes settings that allow you to output the analog signal and to connect the instrument to a weather station. Voltage output for information about how to output the analog signal.

  • Page 67: Weather Station

    The atmospheric conditions, such as humidity and wind speed, in which measurements are made are an essential part of environmental measurements. HBK 2255 works with weather station kits MM-0316-A and MM-0256-A, which are based on Vaisala weather stations. MM-0316-A measures wind speed and wind direction.
  • Page 68 Configure your instrument For HBK 2255, the Metadata setting allows you to create custom metadata. Custom metadata is stored with the meas- urement and supported in the Enviro Noise Partner and Building Acoustics Partner PC applications. If you export your measurement data from the PC application, the export file includes the custom metadata.

  • Page 69: Lock The Settings

    Configure your instrument Lock the settings After you have finished setting up the instrument, you can lock the measurement, display and system settings to pre- vent changes. ✐ Note: This setting is only accessible on the instrument. 1. Go to: System settings > Advanced settings > Service mode. 2.

  • Page 70: Calibration Check

    CALIBRATION CHECK It is a best practice to check the accuracy of your instrument before and after a measurement by performing a cal- ibration check. A calibration check is not a calibration. Calibration includes an adjustment of the instrument's sensitivity. A calibration check compares the current sensitivity of the instrument with the sensitivity from its most recent and ini- tial calibrations, checking that it has not changed too much.
  • Page 71 4. After a short period the instrument will initiate a calibration check, choose Yes. Hint: You can respond to the calibration dialog using the mobile app if you are using B&K 2245 with firm- ware versions greater than 1.1.3.1653 or HBK 2255 with firmware versions greater than 1.2.1325.

  • Page 72: Calibration History

    Calibration check Calibration history To view the history of calibrations and calibration checks, go to: Menu > Calibration history. Calibration settings Menu location: Menu > System settings > Advanced settings > Calibration. Automatic calibration check By default, the instrument is set to perform a calibration check automatically when it detects the constant sound level produced by the calibrator.

  • Page 73: Projects (Mobile)

    PROJECTS (MOBILE) A project is a collection of jobs, tasks, exposure groups, measurements and annotations for testing workplace noise according to a specific standard for a nominal workday. A job is the overall occupational activity of the worker. A job includes all the tasks that a worker performs throughout their workday.

  • Page 74: About Settings For The Standards

    Projects (mobile) About settings for the standards Uncertainty (ISO 9612:2009, Slovene regulation, Czech, Western Australian) Estimate the uncertainty of your measurements. 1.65 (p=95%): Coverage factor of 1.65 and a confidence interval of 95%. In other words, you expect one out of every twenty measurements to fail.

  • Page 75: Create A Task

    Projects (mobile) On the bottom of the project screen, tap Tasks to open the list of all tasks and exposure groups which have been cre- ated for the project. The list is empty at first. Create a task 1. Tap + New Task. 2.

  • Page 76: Jobs

    Projects (mobile) Create an exposure group 1. Tap + New Exposure Group. 2. Enter a name. 3. Set the number of workers in the exposure group. Use left and right arrows or tap on the text box or use the keypad. 4.
  • Page 77 Projects (mobile) Add tasks and exposure groups to a job A job consists of the tasks and/or exposure groups that add up to a nominal workday, which is defined as an 8 hour working day. A working day includes working times and positions, the number and duration of breaks, and the work pat- tern.

  • Page 78: Measurements

    MEASUREMENTS The exact steps of a measurement will vary depending on the settings you use in Measurement control. A basic overview is as follows: 1. Press to start a measurement. 2. If necessary, press to pause. 3. Press to resume. 4.

  • Page 79: Data Explorer

    Measurements Data explorer Menu location: Menu > Data explorer Folder structure There are two top-level folders in the data explorer: Data and Trash. Within the two folders are subfolders, named by date. Within each date folder are all measurements made that day. Data folder Trash folder Date folders...

  • Page 80: Delete Data

    Measurements Delete data There are two stages to remove data from the instrument forever. The first stage is to send the data to the Trash folder and the second stage is to delete data from the Trash folder. By default, you will need to move data to the Trash folder manually.
  • Page 81 Measurements 3. Add a task or an exposure group. Tasks Exposure groups for more information. 4. Tap the task or exposure group to expand it. 5. Tap Measure. 6. Use the controls at the bottom of the screen to start a measurement. How to control measurements Use the controls at the bottom of the screen to start, stop and pause measurements.

  • Page 82: Delete Measurements

    Measurements Delete measurements Swipe left on a measurement for the option to delete it from a project. ✐ Note: The measurement is only removed from the project, it is not deleted from the instrument.

  • Page 83: Annotations

    ANNOTATIONS Use the mobile app to annotate your measurement. Annotations are comments you can attach to a measurement. There are four types of annotations: photo, video, note, and commentary. Every measurement can have multiple annotations of different types. You can attach annotations to the measurements on the measurement screen or later once the measurement is attached to a task or exposure group.

  • Page 84: Edit Annotations

    Annotations ✐ Note: Only one annotation at a time can be expanded. To view a video annotation or listen to an audio annotation tap the play button. You can also navigate through video / audio by using the slider at the bottom. Edit annotations 1.

  • Page 85: Post-Process Using The Pc App

    POST-PROCESS USING THE PC APP PC application GUI This is the Work Noise Partner PC application with a project open. The application tab opens / closes the application menu where you will find tools for the project and the application. Options: Change the language of the GUI.
  • Page 86 Post-process Using the PC App These are the tools that control the operation of the application. : Create a new project. : Open an existing project. : Save the current project. : Save the current project under a new name or in another location. : Import data from the instrument or network storage.
  • Page 87 Post-process Using the PC App When you open a project or import data, you will see the individual measurements in the project browser window. Select measurements to view them. : Open the Edit project properties dialog. : Add a task. : Add an exposure group.

  • Page 88: Application Menu

    Post-process Using the PC App In this panel, you will find collapsible windows for viewing annotations. Notes: Read the notes attached to the measurement. Commentary: Listen to voice memos attached to the measurement. Gallery : View photos and videos attached to the measurement. Application menu The application menu in the PC application gives you access to select project tools, as well as options for and inform- ation about the application.

  • Page 89: About The Application

    Post-process Using the PC App About the application The About section is where you will find open source licences, the EULA (end user licence agreement), release notes and version numbers. Create a project using the PC application In general, projects are created on the mobile app. Projects, including their measurement data and annotations, are stored on the instrument.

  • Page 90: Open A Project

    Post-process Using the PC App About settings for the standards Uncertainty (ISO 9612:2009, Slovene regulation, Czech, Western Australian) Estimate the uncertainty of your measurements. 1.65 (p=95%): Coverage factor of 1.65 and a confidence interval of 95%. In other words, you expect one out of every twenty measurements to fail.

  • Page 91: Import A Project

    Post-process Using the PC App Basic import instructions 1. In the PC application, click to open the Import dialog. 2. On the left, select the source for the import. You can import from an instrument or a backup storage device, such as a network attached storage (NAS) device or a USB stick.
  • Page 92 Post-process Using the PC App 4. Find your instrument in the dialog and select it. ✐ Note: To import from a backup, click on one of the locations under Network Attached Storage. 5. Click Connect. A progress bar will indicate that the software is connecting to the instrument. 6.

  • Page 93: Import Measurements

    Post-process Using the PC App 8. Click Import. A progress bar will indicate that the project is importing. Import measurements Import measurements to add them to a project. You can add measurements to empty projects or to projects that already contain measurements. You will need: A project open in the PC application One or more measurements...
  • Page 94 Post-process Using the PC App 3. Find your instrument in the dialog and select it. 4. Click Connect. 5. Select the data you want to transfer. You can import projects, measurements and annotations. Hint: Use <Ctrl> or <Shift> to select multiple items. 6.
  • Page 95 Post-process Using the PC App Import from an IP address If you want to find an instrument that is not in the list of instruments in the import dialog, such as an instrument on another network, you can manually add the instrument to the list using its IP address. ✐...

  • Page 96: Project Browser

    Post-process Using the PC App Import from Measurement Partner Suite You can import measurements made using Type 2250 or 2270 into the Work Noise Partner PC app by exporting the data from Measurement Partner Suite (MPS). 1. Decide where you want the data to go: To an existing project: Open the Work Noise Partner project before you export from MPS.

  • Page 97: Use A Dosimeter

    Post-process Using the PC App Use a dosimeter You can use Personal Noise Dose Meter Type 4448 with Work Noise Partner. Connect to a dosimeter Infrared (IR) communication establishes the short-range connection between a dosimeter and a PC. 1. Connect the infrared download adaptor (AO-1492) to your PC. 2.
  • Page 98 Post-process Using the PC App Configure a dosimeter 1. Click the Configure tab. 2. Edit the desired settings. 3. Click one of the following: Apply to send the settings to the dosimeter. Close to cancel the changes. About the settings Language: Controls the display language.

  • Page 99: Hearing Protection Database

    Post-process Using the PC App Hearing protection database You can account for the use of hearing protection in Work Noise Partner. Create a database for different types of hear- ing protection so that you can apply hearing protection to jobs in your project. The database file is created and stored locally upon installation of the application.

  • Page 100: Import A Database

    Post-process Using the PC App Delete items from the database 1. Select an item. 2. Click 3. Confirm or cancel the action. Edit items in the database 1. Select an item. 2. Click Import a database 1. Click 2. Browse to the location of the file you wish to import. 3.

  • Page 101: Context-Sensitive Menu

    Post-process Using the PC App Add measurements to a project Click to import measurements from the instrument or from a backup. See Import measurements for details. View a measurement Click on a measurement in the project browser on the left to open the Measurement tab. Add measurements to a task 1.

  • Page 102: Tasks

    Post-process Using the PC App Tasks A task is a distinct activity performed by a worker or a group of workers. Tasks are defined by the content and duration of the activity. Tasks (and their measured sound levels) are added to jobs to calculate exposure levels for a nominal workday.

  • Page 103: Exposure Groups

    Post-process Using the PC App Exposure groups An exposure group is a group of workers who have similar roles and exposure levels. Exposure groups (and their meas- urements) are added to jobs to calculate exposure levels for a nominal workday. ✐...

  • Page 104: Jobs

    Post-process Using the PC App Context-sensitive menu Right-click on an exposure group in the project browser to open the context-sensitive menu. Rename: Give the exposure group a different name. Delete: Remove the exposure group from the project. Insert into: Add the exposure group to a job. Jobs A job is the overall occupational activity of the worker.

  • Page 105: About The Methods

    Post-process Using the PC App Add tasks or exposure groups to a job Work Noise Partner calculates noise exposure levels based on the exposure time of each task and exposure group (if used) that has been added to the job. ✐...
  • Page 106 Post-process Using the PC App Definitions Where: LAeq' is the effective A-weighted equivalent continuous noise level at the ear. LAeq is the measured A-weighted equivalent continuous noise level. PNR: Predicted noise level reduction Use SNR if the noise is not tonal or dominated by low frequencies. There are different methods for calculating the effect of NRR.

  • Page 107: Review Annotations In The Pc Application

    Post-process Using the PC App Delete hearing protection Click to remove the hearing protection from the job. Context-sensitive menu Right-click on a job in the project browser to open the context-sensitive menu. Rename: Give the job a different name. Delete: Remove the job from the project. Review annotations in the PC application If you created annotations using the mobile app, you can review them in the PC application.

  • Page 108: Export A Report

    Post-process Using the PC App Export a report A report is data that has been exported from the project to a Microsoft® Excel® workbook. 1. In the project browser, click on the job you want to export. 2. Click to open the Excel Report dialog. 3.

  • Page 109: Terminology

    TERMINOLOGY Frequency weighting corresponding approximately to the 40 dB equal loudness curve, that A-weighting filter is to say, the human ear’s response at low to medium sound levels. It is by far the most com- monly applied frequency weighting and is used for all levels of sound. Frequency weighting corresponding approximately to the 70 dB equal loudness curve, that B-weighting filter is to say, the human ear’s response at medium sound levels.
  • Page 110 Terminology Sound Exposure Level - sometimes abbreviated SEL and sometimes called Single Event Level, is the Sound Exposure expressed as a level. The letter 'A' denotes that the A-weight- ing has been included. A widely used noise parameter that calculates a constant level of noise with the same energy content as the varying acoustic noise signal being measured.
  • Page 111 Terminology When the broadband sound level is above the measuring range of the instrument. The light Overload ring will flash red quickly for intermittent overloads and will be solid purple for latched over- loads. Maximum peak of the acceleration, velocity, displacement signal or voltage input with fre- Peak quency weighting Linear.

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