Tenmars TM-104 Bedienungsanleitung

TM-104

Sound Level Meter

User’s Manual

HB2TM1040000

 
 
Contents: 
1Introduction.......................................................1 
2Accessories.......................................................1 
3Safety................................................................1 
4Meter description...............................................2 
5Operation..........................................................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 
6General Specifications ......................................6 
7Electrical Specifications:....................................7 
8Maintenance .....................................................8 
9Battery Replacement.........................................8 
10 Disposal............................................................9 

- 1 -

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.

- 2 -

4 Meter 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.

- 3 -

5 Operation

Press to turn on or turn off.

Please select dBA for the measurement of

acoustic noise, dBC for the measurement and

analysis of mechanical noise, wherein click

to switch the modes.

Select “FAST” to read the instantaneous noise

level, “SLOW” to read the average noise level,

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 higher than

10m/s, it must mount the windscreen to

prevent the undesirable signals.

- 4 -

5.1 Disable auto power off

The meter is preset to shutdown automatically after

15-minute inactivity.

When powering on, press for 2 seconds to

disable the auto shutdown function which can be set

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 .

- 5 -

5.4 94dB Calibration

Carefully plug the microphone head into the 1/2

inch hole of the standard audio source (94dB,

@1KHz sine wave).

Turn on the power of the standard audio source

(94dB, @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.

- 6 -

6 General Specifications

4 digital LCD.

Frequency weighting: dBA, dBC

Time weighting: FAST, SLOW

Data hold.

Autoranging.

Auto power off(default 15 min)and disable auto

power off.

Maximum and Minimum hold

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 40oC(41 to 104oF); < 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

- 7 -

7 Electrical Specifications:

Environmental conditions at 23°C ± 5°C

Sample rate

1 second

Standard applied

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)

- 8 -

8 Maintenance

1.When the When symbol is displayed on

the LCD, it means that there is insufficient power;

please change the battery immediately in order to

ensure its accuracy.

2.Do not place the meter in locations that have high

temperature, humidity or that are exposed to

direct sunlight.

3.Remember 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 insert six new 9V batteries according to

the polarities.

4.Put the battery cover back in place.

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