B&K 2250 Light Instrukcja Użytkownika Strona 195
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- Spis treści
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Oceniono. / 5. Na podstawie oceny klientów
APPENDIX E
Glossary
187
Threshold Level: Any sound levels below the threshold level do not contribute to the Dose
measurement data. For example, if you set the threshold level to 80, any
sound levels below 80 dB are not taking into consideration by the instrument,
when it calculates doses and time weighted averages.
Used for calculation of Dose, ProjDose, TWA, TWA
v
DoseSQ, ProjDoseSQ.
TWA: The Time Weighted Average is the average A-weighted sound level for a
nominal 8-hour working day with Time Weighting S and Exchange Rate 5.
TWA is calculated from the measured LavS5 (taking Threshold Level into
account) and a Reference time of 8 h. Mainly used in the USA for assessing
the noise exposure for a worker during a working day.
TWA
v
: The Time Weighted Average for a user-defined reference period. TWA
v
is
calculated from the measured LavS5 (taking Threshold Level into account)
and the Reference Time. Used, for example, for calculating a Weekly Time
Averaged Level by setting the Reference Time to 40 h.
Underrange Immediate underrange indicates that the broadband sound level is below
the lower limit of the Linear Operating Range and is indicated separately for
the two selectable frequency weightings.
Immediate underrange is only indicated on the screen. No underrange
information is saved with the final result of the measurement.
The underrange indication is implemented as required by ISO 61672–1:2013
and does not account for the influence of self-generated noise from the
microphone because the specifications for the lower limit of the Linear
Operating Range apply for measurements of electrical signal inserted into
the preamplifier through the applicable input device. This makes the
underrange indication a dubious indicator of the quality of the measurement.
Example: Und. A – Immediate underrange for the A-weighted levels
Z-weighting: ‘Zero’- frequency weighting is without any frequency weighting, that is,
equivalent to Linear, LIN or FLAT.
- Technical 1
- Documentation 1
- Hand-held Analyzer 3
- 2250 Light 3
- Safety Considerations 4
- Table of Contents 5
- APPENDIX A 7
- APPENDIX C 7
- Chapter 1 9
- 1.2.2 Beginners 10
- Chapter 2 11
- 2.2 Instrument Components 12
- CHAPTER 2 13
- 2.3 Analyzer Inputs/Outputs 14
- 2.3.2 Hardware Version 4: 15
- 2.4 Hardware Setup 19
- 2.5 Assembling 2250 Light 20
- Chapter 3 23
- 3.3 Making a Measurement 24
- 3.3.2 Switching On 25
- CHAPTER 3 27
- 3.4 Save your Measurement 29
- 3.6 Switching Off 31
- Chapter 4 33
- CHAPTER 4 35
- 4.2.6 Built-in Help 36
- The ‘Star’ navigation concept 38
- 4.4.2 The Display Screen 40
- Typical screen when 41
- Chapter 5 47
- 5.3 Standard Calibration 48
- 5.3.1 Calibration Settings 49
- 5.4 Calibration History 50
- 5.5 Transducer Database 51
- 5.6 Calibration Reminder 52
- CHAPTER 5 53
- ( ) 54
- Chapter 6 57
- 6.1.2 Navigating in Jobs 58
- 6.3 Recalling Measurements 59
- Example of annotations 60
- Chapter 7 61
- Connection overview 62
- 7.2.1 Connect to Your PC 63
- 2250 home page 64
- On-line display and 66
- Chapter 8 67
- 8.1.2 Power Settings 68
- CHAPTER 8 69
- Power Settings overview 69
- 8.1.3 Regional Settings 70
- 8.1.4 Storage Settings 71
- 8.1.5 Headphone Settings 72
- 8.1.6 Printer Settings 72
- 8.2 Modem/DynDNS Settings 73
- 8.2.3 DynDNS 75
- 8.3 Network Settings 76
- 8.4 Notifications 79
- 8.4.2 Text/SMS Notifications 80
- 8.5 Web Server 81
- 8.6.1 Weather Stations 82
- 8.6.2 GPS Receivers 83
- Chapter 9 87
- CHAPTER 9 89
- 9.3 Troubleshooting 90
- 9.3.4 Touch Screen 92
- 9.3.5 Reset Options 93
- 9.4.1 Accredited Calibration 96
- 9.4.2 Initial Calibration 96
- 9.4.3 Regular Recalibration 96
- 9.4.4 Filter Calibration 96
- 9.4.5 Service and Repair 96
- 9.4.7 Rental 97
- 9.4.8 Training 97
- 9.5.1 Handling the Instrument 97
- 9.5.2 Cleaning the Instrument 97
- 9.5.3 Storing the Instrument 98
- Chapter 10 99
- 10.3 Displaying the Results 100
- CHAPTER 10 101
- Displaying the results 101
- – spectrum screen 101
- Spectrum display 102
- Adjusting the X-axis 102
- Scaling the Y-axis on the 102
- Spectrum table 103
- 10.4 Saving Results 104
- Chapter 11 105
- CHAPTER 11 107
- 11.3 Displaying the Results 108
- 11.3.1 The Profile View 109
- Chapter 12 115
- 12.1.3 Playing the Recording 117
- 12.2 With Logging Software 118
- CHAPTER 12 119
- 12.2.4 Playing the Recording 121
- Chapter 13 125
- 13.3 Setting up the Analyzer 127
- 13.4 Measuring 130
- CHAPTER 13 131
- 13.6 Status Codes (Smileys) 132
- Chapter 14 135
- Microphone 136
- Interface 136
- Inputs/Outputs 136
- Environmental 137
- User Interface 137
- Analysis 138
- Measurement Status 139
- Calibration 139
- Signal Monitoring 139
- Aeq,T,mov 141
- Functions with BZ-7133 142
- CHAPTER 14 143
- Ordering Information 144
- Separately 144
- Compliance with Standards 145
- Appendix A 147
- A.2 Frequency Settings 148
- A.3 Statistics 149
- A.4 Measurement Control 150
- A.5 Logged Broadband 151
- A.6 Logged Broadband (100 ms) 153
- A.7 Logged Spectrum 153
- A.8 Markers 154
- A.9 Signal Recording 155
- A.10 Occupational Health 157
- A.11 Tone Assessment 159
- Appendix B 161
- B.1 Total Measurement 162
- APPENDIX B 163
- B.2 Logged Measurement 165
- General Parameters 168
- Table B.2 Statistics 169
- Appendix C 171
- C.2.2 Calibration History 173
- C.3 Calibration Setup 174
- Appendix D 175
- D.2 Power Settings 176
- D.3 Regional Settings 177
- D.4 Storage Settings 178
- D.5 Headphone Settings 178
- APPENDIX D 179
- D.6 Printer Settings 180
- D.7 Modem/DynDNS Settings 181
- D.8 Network Settings 182
- D.9 Notification Settings 184
- D.10 Remote Access Settings 186
- Appendix E 187
- APPENDIX E 189
- Numerics 197
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