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Hand-held Analyzer Types 2250 and 2270 – User Manual

212

MEASURING RANGES

The full level measuring range is covered in two range

settings: High Range for the least sensitive range and

Low Range for the most sensitive range

When using Microphone Type 4189:

Broadband Analysis

Dynamic Range: From typical noise floor to max.

level for a 1 kHz pure tone signal, A-weighted:

• High Range: 28.5 to 140 dB

• Low Range: 16.6 to 110 dB

Primary Indicator Range: In accordance with IEC

60651, A-weighted:

• High Range: 41.7 dB to 122.3 dB

• Low Range: 23.5 dB to 92.3 dB

Linearity Range: In accordance with IEC 60804,

A-weighted:

• High Range: 39.6 to 140.8 dB

• Low Range: 21.4 to 110.8 dB

Linear Operating Range: In accordance with

IEC 61672:

• A-weighted: 1 kHz

– High Range: 43.0 dB to 139.7 dB

– Low Range: 24.8 dB to 109.7 dB

• C-weighted: 1 kHz

– High Range: 41.7 dB to 139.7 dB

– Low Range: 25.5 dB to 109.7 dB

• Z-weighted: 1 kHz

– High Range: 45.9 dB to 139.7 dB

– Low Range: 30.6 dB to 109.7 dB

Peak C Range: In accordance with IEC 61672, 1 kHz:

• High Range: 58.5 dB to 142.7 dB

• Low Range: 42.3 dB to 112.7 dB

Frequency Analysis

Dynamic Range: From typical noise floor to max.

level for a pure tone signal at 1 kHz 1/3-octave:

• High Range: 18.5 to 140 dB

• Low Range: 1.3 to 110 dB

Linear Operating Range: In accordance with

IEC 61260:

• High Range:  39.3 to 140 dB

• Low Range:  20.6 to 110 dB

Measurements with BZ-7222 and

BZ-7223

Two channels, each with all the data from the single

channel measurement, except for common

housekeeping parameters like Start Time, Elapsed

Time etc. and weather and GPS data.

Underrange Detector: Monitors the underrange of all

the frequency-weighted detectors when set to High

Range. Underrange is set if level is below lower limit of

Linear Operating Range. Detectors available for both

Ch. 1 and Ch. 2

AUTORANGE

Manual and automatic range controls are provided

Spectrum Display (for BZ-7223)

Spectra from both channels can be superimposed.

Data from different transducer types are displayed with

individual Y-axis

Spectra for Display (Microphone Input):

• Ch.1 - Ch.2 LX

• Ch.2 - Ch.1 LX

X = A,B,C,Z

Spectra for Display (Accelerometer or Direct

Input):

• Ch.1 - Ch.2 Linear

• Ch.2 - Ch.1 Linear

Single Values for Display (Microphone Input):

• Ch.1-Ch.2 LX

• Ch.2-Ch.1 LX

• Ch.1-Ch.2 LY

• Ch.2-Ch.1 LY

X = A, B. Y = C, Z

Single Values for Display (accelerometer or direct

input):

• Ch.1 - Ch.2 Linear

• Ch.2 - Ch.1 Linear

Measurements with BZ-7224 and

BZ-7225

Fast Logging: Up to a total of four of the 100 ms

parameters from the two channels can be logged.

Broadband Data Stored at Each Logging Interval:

All, or up to 10 selectable broadband values from the

two channels.

Spectrum Data Stored at each Logging Interval:

All, or up to four selectable spectra from the two

channels (license for BZ-7223 required)

2-channel Signal Recording (license for BZ-7226

required):

2-channel Signal Recording is available in Sound

Level Meter, Frequency Analysis, Logging and

Enhanced Logging Software

The signals from the two channels can be recorded

into a “stereo” wave file of either 2 × 24-bit or 2 × 16-bit

Note: 2 × 24-bit at 48 kHz is not available for hardware

versions 1–3

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B&K 2250 Light Manual de usuario Pagina 224

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B&K 2250 Light Manual de usuario Pagina 224

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