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1 Introduction 

This sound level meter is a digital noise meter 

auto-shifting function that can be applied to the 

measurements for both environmental noise and 

mechanical noise. 

 

2 Accessories 

Meter 

User’s Manual 

9V battery 

Carrying case 

Windscreen 

 
 

3  Safety 

 

Caution! Please refer to this manual.   

Improper  use  may  damage  the  meter 

and its components.   

 

Compliance with European Directive 

 

Do  not  operate  in  environments  with  flammable  gas  or 
humid environments. 

 

Do not place the meter in locations with high temperature, 
humid, or exposed to direct sunlight. 

 

Operating altitude: 2000 meters below sea level. 

 

Operation  environment:  Indoor  use;  contamination  level 
class 2. 

 

EMC: EN61326-1:CISPR 11:Group 1, Class B 

 

Class B

 

– Equipment is suitable for use in domestic 

establishments and outside facilities. 

 

Group 1

 

– RF energy generated is needed for internal 

functioning. 

Summary of Contents for TM-104

Page 1: ...TM 104 Sound Level Meter User s Manual HB2TM1040000 ...

Page 2: ...ty 1 4 Meter description 2 5 Operation 3 5 1 Disable auto power off 4 5 2 Maximum and Minimum hold 4 5 3 Data hold 4 5 4 94dB Calibration 5 6 General Specifications 6 7 Electrical Specifications 7 8 Maintenance 8 9 Battery Replacement 8 10 Disposal 9 ...

Page 3: ... the meter and its components Compliance with European Directive Do not operate in environments with flammable gas or humid environments Do not place the meter in locations with high temperature humid or exposed to direct sunlight Operating altitude 2000 meters below sea level Operation environment Indoor use contamination level class 2 EMC EN61326 1 CISPR 11 Group 1 Class B Class B Equipment is s...

Page 4: ... description 1 Microphone 2 LCD display 3 A C weighting select button 4 Power button 5 Maximum and Minimum hold button 6 Data hold button 7 Time weighting select button 8 Tripod nut 9 Battery cover 10 Windscreen ...

Page 5: ...el wherein click to switch the modes Press to capture the maximum or minimum noise level and lock the readings When measuring noise with the sound level meter by hand keep the distance between the microphone and the sound source by about 1 1 5 meters Warning Wind blowing across the microphone would bring additional extraneous noise Once using the instrument in the presence of wind with speed highe...

Page 6: ...to disable or enable as needed 5 2 Maximum and Minimum hold Click for less than 1 second to view the maximum and minimum values cyclically while pressing and for switching frequency weighting and time weighting Press and hold for more than 1 second to quit the function 5 3 Data hold Click to enable or disable the data hold function When HOLD is activated all buttons will be disabled except for ...

Page 7: ...B 1KHz sine wave Press and hold for more than 1 second and enter the 94dB correction function Press for auto calibration Press to select frequency weighting Use the to manually adjust the deviation value 3 5dB Press to quit the 94dB correction function Auto correction range is 90 5 97 5dB The meter has been calibrated as ex factory The calibration period is recommended as 1 year ...

Page 8: ...old Overloading OVER or UNDER Low battery indication Battery 9V NEDA 1604 IEC 6F22 or JIS 006P Battery life About 50 hrs alkaline Battery Standby power consumption 9uW Operating power consumption 90mW Operation temperature and humidity 5 to 40o C 41 to 104o F 80 RH Storage temperature and humidity 10ºC to 60ºC 14 to 140 70 RH Weight about 200g including battery Dimension 235 L x 56 W x 40 H mm ...

Page 9: ... IEC 61672 1 class 2 IEC651 Type2 ANSI1 4 Type2 Microphone 1 2 inch Electret condenser microphone Dynamic Range 50 dB Measuring range 35 130 dBA 40 130 dBC Frequency response 31 5 Hz 8 KHz Resolution 0 1 dB Time weighting FAST 125 ms SLOW 1s Frequency weighting A C Accuracy 1 8 dB reference SPL 94 dB 1KHZ ...

Page 10: ...member to turn off the power after usage remove the battery if not used for a long period of time in order to prevent battery leakage and causing damages to internal components 4 When the instrument failure only by the authorized service provider or return the original repair 9 Battery Replacement 1 Turn off the power 2 Open the battery cover at the back of the meter remove the batteries 3 Please ...

Page 11: ...9 10 Disposal Note This symbol indicates that the meter and its accessories must be separated and processed properly ...

Page 12: ...TENMARS ELECTRONICS CO LTD 6F NO 586 Ruiguang Rd Neihu Dist Taipei City Taiwan E mail service tenmars com http www tenmars com ...

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