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3M 1100 SLM User Manual

Manual is about: sound level meter

Summary of 1100 SLM

  • Page 1

    3m occupational health & environmental safety division 1100/2100 sound level meter models functionality 1100/2100 slm user manual easy to use.

  • Page 2: Owner’S Manual

    056-652, rev.D 1100/2100 slm models 1100/2100 sound level meters owner’s manual introduction the 1100 sound level meter is a light weight easy-to-use type 1 instrument. The 2100 is a type 2 model. The purpose of this manual is to provide you with the necessary information to operate the 1100/2100 so...

  • Page 3: Table Of Contents

    Table of contents 056-652, rev.D 1100/2100 slm models ii table of contents introduction ...................................................................................................................... 1 1100/2100 models .............................................................................

  • Page 4: Figures

    Table of contents 056-652, rev.D 1100/2100 slm models iii weighting characteristics ................................................................................................. 14 internal electrical noise ............................................................................................

  • Page 5: Introduction

    1 introduction 1100/2100 models 056-652, rev.D 1100/2100 slm models introduction the quest models 1100 and 2100 sound level meters and their remote versions (1100r/2100r) measure frequency weighted and time averaged sound pressure level and are shown in figures l-1 and 1-2. Applications include labo...

  • Page 6

    2 introduction 1100/2100 models 056-652, rev.D 1100/2100 slm models figure 1-2: model 1100r/2100r.

  • Page 7: Getting Started

    3 getting started the display 056-652, rev.D 1100/2100 slm models getting started the display the lcd display provides a numeric readout of sound level in 0.1 db increments along with a lobat (low battery) indicator. In the spl mode the numeric display provides a reading of the maximum sound pressur...

  • Page 8

    4 getting started meter controls 056-652, rev.D 1100/2100 slm models weighting a/c switch the weighting switch controls the frequency response of the meter. Weightings a or c may be selected. See “microphone preamplifier”, page 13 weighting characteristics, for further information. Range (db) switch...

  • Page 9: Output Jack

    5 getting started overload detection and underrange 056-652, rev.D 1100/2100 slm models overload detection and underrange the overload indicator is displayed whenever the incoming signal saturates (overloads) the circuitry. It is the + sign on the left side of the display. If the overload indicator ...

  • Page 10: Checking The Battery

    6 checking the battery battery check 056-652, rev.D 1100/2100 slm models checking the battery battery check at any time other than initial turn on, if the lobat indicator on the display is activated the user must replace the battery. A 9 volt alkaline battery is recommended for best performance. Ref...

  • Page 11: Calibration

    Checking the battery calibration 056-652, rev.D 1100/2100 slm models 7  note: if the reset and cal buttons are continuously held down after the dashes appear, the unit will interpret this as a command to exit calibration level set mode and exit without changing the calibration level. 3. To edit the...

  • Page 12: Operating And Measurements

    8 operating and measurements operation 056-652, rev.D 1100/2100 slm models operating and measurements operation before taking measurements with the model 1100, there is a series of quick checks and considerations that should be performed or noted. After switching the unit on, check for a lobat indic...

  • Page 13: Background Noise Example

    9 operating and measurements background noise example 056-652, rev.D 1100/2100 slm models background noise example for example, if the background noise is 45 db and the sound of interest measures 51 db, the difference between measurement and background noise is 6 db. From figure 4, for a 6 db differ...

  • Page 14: Chart Recording/datalogging

    10 operating and measurements chart recording/datalogging 056-652, rev.D 1100/2100 slm models chart recording/datalogging the model 1100 has a dc output that is linearly related to the decibel reading on the lcd display by 16.7mv/db (1v/60db). This output, capable of driving up to 100 feet of shield...

  • Page 15: Technical Information

    11 technical information principles of operation 056-652, rev.D 1100/2100 slm models technical information principles of operation the quest model 1100 uses low noise, low power analog and digital integrated circuitry to ensure long battery life, maximum stability, and superior reliability over a wi...

  • Page 16: Microphone

    12 technical information microphone 056-652, rev.D 1100/2100 slm models microphone the model 1100 is designed to accept a pre-polarized (electret) type 1 microphone quest part number #059-523 bk 4936. The impedance of this microphone is approximately 12pf. The microphone screws directly onto either ...

  • Page 17: Input Buffer Circuitry

    Technical information microphone preamplifier extension cables 056-652, rev.D 1100/2100 slm models 13 microphone preamplifier extension cables on 1100r (remote) units the preamplifier is removable by unscrewing the black plastic collar below the preamplifier housing. The 1100 will drive up to a 10 f...

  • Page 18: Weighting Characteristics

    Technical information weighting characteristics 056-652, rev.D 1100/2100 slm models 14 weighting characteristics the weighting characteristics (frequency response) for a and c are shown in figure 11. The "a" weighting response emulates the low level response of the human ear and is used for most ind...

  • Page 19: Tone Burst Response

    Technical information tone burst response 056-652, rev.D 1100/2100 slm models 15 tone burst response figures 12 and 13 show the meter response to a sine-wave input of various pulse durations for fast and slow settings. Figure 12: fast response figure 13: slow response nominal decay times for each ti...

  • Page 20: Specifications

    Specifications tone burst response 056-652, rev.D 1100/2100 slm models 16 specifications standards: model 1100 : type 1 ; model 2100 : type 2 ansi s1.4-1983(r1997), iec 651-1979 en60651 display: 3 1/2 digit liquid crystal display. Level display indicates to 0.1 db resolution. Annunciator is included...

  • Page 21

    Technical informationspecifications tone burst response 056-652, rev.D 1100/2100 slm models 17 crest factor: greater than 26db (crest factor = 20) if peak of signal does not cause an overload. Crest factor is sufficient to handle the signal if the overload indicator does not light. Operating tempera...

  • Page 22: Accessories

    Technical informationaccessories tone burst response 056-652, rev.D 1100/2100 slm models 18 accessories 58-928 calibrator adapter for 0.52 inch diameter microphone for use with quest "ca-" series calibrators 56-990 calibrator adapter for 0.52 inch diameter microphone for use with quest "qc-" series ...

  • Page 23: Quest Service

    19 quest service contacting 056-652, rev.D 1100/2100 slm models quest service contacting quest technologies should your quest technologies equipment need to be returned for repair or for recalibration, please contact the service department at the following number or access the online form via the we...

  • Page 24

    Quest technologies, a 3m company, is a world class manufacturer and leader in the field of occupational safety, industrial hygiene and environmental instrumentation. Quest prod- ucts are used in more than 80 countries worldwide. Quest has a strong reputation of rugged, reliable instrumentation and s...