Atec 2250, 2270 User Manual

PRODUCT DATA

120279

Hand-held Analyzer Types 2250 and 2270

with Sound Level Meter Software BZ-7222, Frequency Analysis Software BZ-7223, Logging Software BZ-7224, Enhanced Logging Software BZ-7225, Signal Recording Option BZ-7226 and Tone Assessment Option BZ-7231

Type 2250 and Type 2270 are the innovative, 4th generation hand-held analyzers from Brüel & Kjær. The analyzers’ easy, safe and clever design philosophy is based on extensive research. Type 2250 has been awarded several prizes for its combination of excellent ergonomics and attractive design.

Both analyzers can host a number of applications, including frequency analysis, logging (profiling) and signal recording, but in addition, Type 2270 adds dual-channel capabilities such as sound intensity/sound power measurements and dual-channel building acoustics applications. Applilcations are available separately at any time – or you can order a fully pre-configured instrument from the factory.

The combination of application modules and innovative hardware makes these instruments into dedicated solutions for performing high-precision measurement tasks in environmental, occupational and industrial application areas. As a result, Brüel & Kjær delivers the functionality you need now, plus the capability to add more functionality later – this is a very secure investment.

Uses and Features

Uses

• Environmental noise assessment

• Occupational noise evaluation

• Reverberation Time measurements

• Selection of hearing protection

• Noise reduction

• Product quality control

• Class 1 sound measurements to the latest international standards

• Real-time analysis of sound in 1/1- and 1/3-octave bands

• Tone assessment using 1/3-octave methods

• Loudness and noise rating measurements

• Analysis of time histories for broadband parameters and spectra (Logging)

• Documentation of measurements using text, voice and metadata annotations

• Documentation of measurements through recording of measured signals

• Logging up to 10 broadband parametersand 3 spectral parameters

For more information, please refer to the relevant product data sheet.

Features

• Dual-channel measurement capabillity

• Large, high-resolution, touch-sensitive color screen

• Data storage on high-capacity plug-in memory cards

• Communication via USB, LAN, or GPRS/3G modems

• Dynamic range in excess of 120 dB

• 3 Hz – 20 kHz broadband linear frequency range

• Recording measured signal during all or parts of a measurement (optional)

• Personalized measurement, display and job setup

• Integral digital camera for documentation and reference

• “Smiley” quality indicators with hints and warnings

• Timers for automatic start of measurement

• PC software included for archiving, previewing and exporting data; software maintenance and remote online display

• Automatic detection of and correction for windscreen

• Weather data and GPS input

• Robust and environmentally protected (IP44)

†

Type 2270 only.

†

Applications and Hardware

Introduction

Types 2250 and 2270 have generous hardware and software specifications. They deliver an extremely flexible instrument that can cover your current and future measurement and analysis needs – from the traditional uses in assessing environmental and workplace noise to industrial quality control and development. These analyzers offer a technological platform for performing measurement applications in a compact and robust hand-held instrument.

This data sheet describes different combinations of software modules (applications) available fo r Type 2 250 and Type 2270. All instruments come with the Sound Level Meter Software BZ-7222 enabled. This makes them modern Class 1 Sound Level Meters (SLMs) and fulfill the requirements of the latest standard, IEC 61672–1, as well as earlier standards (see the specifications section for detailed compliance information). Even in their most basic configuration, these analyzers are delivered with a number of predefined measurement and display setups tailored to suit specific requirements.

Optional Applications

Additional applications that can be used in any combination can be purchased when needed and are delivered as easily installed licenses. Your hand-held analyzer investment is securely protected because when your need for measurements and analyses expands, these analyzers can accommodate your needs. Brüel & Kjær is committed to maintaining an ever-growing range of applications on these platforms.

The optional applications described in this data sheet are:

• Frequency Analysis Software BZ-7223 – analyse in real-time the 1/1- and 1/3-octave filter bands over a wide frequency range with a dynamic range from the noise floor in each individual band to 140 dB

• Logging Software BZ-7224 – freely select parameters to log at periods from 1 s to 24 h. Running together with SLM Software, all broadband parameters can be logged. If Freq uency Anal ysis Software i s also enabled, spectra can be logged at the same ra tes. Logging (or noise profiling) is used to develop time histories for use in environmental noise as well as workplace noise assessment

• Enhanced Logging Software BZ-7225 – continuously monitor and log periodic reports in addition to the features of Logging Software. Parameters such as L

• Signal Recording Option BZ-7226 – attach actual samples of the measured signal to your measurements. This option works with all other applications. The recording uses the measurement transducer, while voice annotations (standard) use a separate commentary microphone

• Tone Assessment Option BZ-7231 – identify any 1/3-octave bands with audible tones above a set limit

and L

are calculated

den

Information regarding the following applications can be found in their respective Product Data sheets:

• Reverberation Time Software BZ-7227 – start a basic measurement by clapping your hands. The ‘traffic light’ shows measurement status at a glance, and the resulting reververation time (RT) spectrum is shown as well as the average RT for the room. For assessing the acoustic quality of auditoria, halls, public spaces and workplaces. (Product Data BP 2152)

• Building Acoustics Software BZ-7228 and Dual-channel Building Acoustics Software BZ-7229 – assess sound insulation in buildings and of building elements. Airborne as well as impact sound insulation can be measured, and final results shown on the sp ot to international (ISO) and 12 national standards. The required sound sources and PC reporting software are available, as well as complete building acoustics systems. (Product Data BP 2190)

• FFT Analysis Software BZ-7230 – analyse frequency using the Fast Fourier Transform (FFT) algorithm, the tool of choice for measurement and diagnostics of machinery noise and vibration. The frequency ‘profile’ of a machine is its fingerprint, revealing sources of noise and vibration and their paths to the measurement position. Useful in product development, troubleshooting, quality control and environmental noise measurements. With Tone Assessment Option BZ-7231, FFT Analysis offers objective indication of tonal noise audibility and annoyance (Product Data BP 2183)

• Sound Intensity Software BZ-7233 (Type 2270 only) – make sound intensity measurements from beginning to end. A single user can make complete intensity measurements for total sound power and noise source location. You can use the built-in camera to take a photo to aid in probe placement during measurment and for use as a background for a map of the results (Product Data BP 2341)

Long-term and Continuous Noise Monitoring

For long-term and continuous noise monitoring, Brüel & Kjær offers a wide range of Noise Monitoring Terminal (NMT) and Noise Sentinel solutions that will meet and evolve with your needs. For more information, please consult Product Data BP 2379 for NMT solutions and Product Data BP 2389 for Noise Sentinel solutio ns.

Connectivity

Fig.1

Secure access to measurement data from anywhere

Post-processing Software

Measurement Partner Suite BZ-5503 is the next step in evolution from Utility Software BZ-5503, and its standard configuration is included with your hand-held analyzer. This configuration provides data archive, preview and export capabilities as well as software maintenance and remote online display.

In addition to the free, standard configuration mentioned above, valuable data analysis and post-processing functionalities are now available in a growing suite of optional applications. Measurement Partner Suite offers these applications on a subscription basis: Only pay for what you need, when you need it. For more information on Measurement Partner Suite BZ-5503, please consult Product Data BP 2430.

Additional post-processing applications (available separately) include:

• Noise Explorer™ Type 7815 for data viewing and archiving

• Evaluator™ Type 7820 for advanced environmental noise assessment

• Protector™ Type 7825 for workplace noise assessment

• Qualifier™ Type 7830 for building acoustic measurement analysis

DDNS Service Provider

Office Network

Firewall

Internet

GPRS/3G

Network

GPRS/3G Modem/Router

Smart Phone

120262

Remote Internet Communication

Broadband Internet communication with Type 2250 and Type 2270 allo ws opera tion throug h routers, mobile broadband and firewalls with all the usual security protocols. These analyzers, with their support of IP EDGE or GPRS technologies for remote logging and instrument control, offers speed, price and coverage benefits over the now aging GSM technology.

Alerting the Operator

Email or SMS/text messages can be sent to a PC or mobile device to inform operators instantly of noise events that require a response, battery power levels that require attention, memory storage status, calibration status and many other user-programmed trigger conditions. This is a very low-cost solution for receiving important alerts.

Secure Digital High Capacity (SDHC)

SDHC memory cards complying with the new SD 2.0 standard, offer up to 32 GB of removable data storage. This enables very long signal recordings and measurement profiles to be made.

Using the Platform

120011

Power Switch

Windscreen Sensor

Windscreen

Navigation Pushbuttons:

• Up/down, left/right arrow keys

Microphone/Preamplifier Stage:

• Falcon™ Range ½ microphone and microphone preamplifier stage

• The microphone preamplifier stage is able to drive an extension cable of up to 100 m, a valuable feature when a measurement requires remote location of the microphone

Battery Charge:

• 8 – 24 V DC input from a universal mains adapter or external batteries

Output:

• Output socket for softwaredetermined signals

Display:

• Touch sensitive color screen with backlight

USB 2.0 (On-the-Go) Micro-AB socket:

• Allows data transfer and remote control of the instrument directly with a host PC

High-speed LAN Interface

Trigger/Tacho Input

Slots for Secure Digital (SD) memory cards

Microphone for commentary

Battery Charge Indicator LED

Back Erase/Exclude Pushbutton:

• Allows you to erase the last 5 s of data

• Mark logged data with an exclude marker

Start/Pause Pushbutton:

• Press to start a measurement

• Press to pause a measurement

Store Pushbutton:

• Store measurement results

Battery Compartment for rechargeable battery pack

Reset button

3.5 mm Stereo Socket for Headphones:

• For reviewing recorded comments or listening to measurement signals

Input:

• For AC/DC or CCLD signals. Can be used when analysing electrical signals, for example, sound recordings

Mounting thread

Red, yellow, green Status Indicators

Thread for tripod/wrist strap

Cover for protecting connectors

Non-slip surfaces for safe grip

Event Pushbutton:

• For marking events

Accept Pushbutton:

• Accepts any changes made to parameters/setups

Commentary Pushbutton:

• Allows you to attach recorded messages to measurements

Reset Measurement Pushbutton:

• Allows you to reset Type 2250’s measurement buffers

Stylus (stored)

G4 indicates hardware version 4

USB 2.0 Standard A socket

• For connection to USB peripherals

Great care has been taken to ensure that the hardware is ergonomically optimal in field use. Similarly, the software design has focused not only on making valid measurements but also on making field us e efficient, convenient and intuitive.

All user choices for setups (what to measure) and preferences (how to display it) are controlled using easy to understand lists, that can be expanded and collapsed. No more cluttered displays, choose only the parameters you want to see.

Fig.2 Key features of Hand-held Analyzer Type 2250

Fig.3 Key features of Hand-held Analyzer Type 2270

120261

Power Switch

Windscreen Sensor

Windscreen

Navigation Pushbuttons:

• Up/down, left/right arrow keys

Microphone/Preamplifier Stage:

• Falcon™ Range ½ microphone and microphone preamplifier stage

• The microphone preamplifier stage is able to drive an extension cable of up to 100 m, a valuable feature when a measurement requires remote location of the microphone

Battery Charge:

• 8 – 24 V DC input from a universal mains adapter or external batteries

Output:

• Output socket for softwaredetermined signals

Display:

• Touch sensitive color screen with backlight

USB 2.0 (On-the-Go) Micro-AB socket:

• Allows data transfer and remote control of the instrument directly with a host PC

High-speed LAN Interface

Trigger/Tacho Input

Slots for Secure Digital (SD) memory cards

Microphone for commentary

Battery Charge Indicator LED

Back Erase/Exclude Pushbutton:

• Allows you to erase the last 5 s of data

• Mark logged data with an exclude marker

Start/Pause Pushbutton:

• Press to start a measurement

• Press to pause a measurement

Store Pushbutton:

• Store measurement results

Battery Compartment for rechargeable battery pack

Reset button

3.5 mm Stereo Socket for Headphones:

• For reviewing recorded comments or listening to measurement signals

Input Channels 1 and 2:

• For AC/DC or CCLD signals. Can be used when analysing electrical signals

Mounting thread

Red, yellow, green Status Indicators

Thread for tripod/wrist strap

Cover for protecting connectors

Non-slip surfaces for safe grip

Event Pushbutton:

• For marking events

Accept Pushbutton:

• Accepts any changes made to parameters/setups

Commentary Pushbutton:

• Allows you to attach recorded messages to measurements

Reset Measurement Pushbutton:

• Allows you to reset Type 2270’s measurement buffers

Stylus (stored)

G4 indicates hardware version 4

USB 2.0 Standard A socket

• For connection to USB peripherals

Camera

070135/1

Type 2270 (with BZ-7229)

Dual

10-pole

Adaptor

JP-1041

Cable AO-0679

Preamp ZC-0032

Microphone

4189

Microphone

4189

Fig.4

Setup for dual-channel measurements as used with Dual-channel Building Acoustics Software BZ-7229

Dual-channel Measurement

• Reducing measurement time in multi-point tasks in building acoustics

• Allowing real-time operations on two channels in sound intensity measurements

Type 2270 is designed with two independent measurement channels with the potential to measure all the usual acoustic parameters, including third-octave frequency content at two locations simultaneously. This capability has a number of benefits, such as:

Display Capabilities

View area:

• Contains all the parameters and results in numerical or graphical format

• More than one view can be used for displaying the information

• Select view using the View Tabs at bottom of view area

Selected project template (including display and measurement setup)

Status field:

• Path and name of current project

• Immediate textual feedback when pressing buttons

• Information on measurement status

Shortcut bar:

• Main menu button, brightness adjust, help, battery level, clock

View tabs

View area

Close and return to measurement

Parameter values:

• Changed via drop-downs

• Active element is highlighted

As a user, you have several ways of tailoring the display to suit your specific needs. However, standard display elements are used to ensure uniformity, not only across different applications, but also across different users, setups and preferences. Once you have set up your measurement and display parameters the way you wish, you can save the setup in user-defined templates.

Fig.5 Typical display when (Left) measuring and (Right ) modifying/updating the measurement setup.

Appearance

Fig.6

Alternative display colour schemes – the left-hand display shows the maximumcontrast bright sunlight display. The right-hand display shows the night time display, which is optimised to take into account the physiology of human vision, allowing you to read the display without ruining your night vision.

The analyzer applies a default color scheme for the display, as seen in most examples in this data sheet. However, you can adjust color schemes to suit your needs – for example, for very bright light (where maximum contrast is needed) or for night-time use (where no interference with night-vision is wanted).

Fig.7

Logging Software BZ-7224 displays (from left to right): Profile with online sound marker, spoken commentary and note; current spectrum; and current broadband values. Select freely between these displays at any time

Data Display

The analyzers make a distinction between the measurement made and how i t is displayed. The anazlyzers measure all quantities in parallel; however, you can choose to view any measured quantity during or after measurement without affecting your measured data.

For example, if logging broadband values and spectra, you can observe the profile, time history, overall or current spectrum, or overall or current broadband values. The di splay choice has no influence on what is measured or stored.

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