Sauter GmbH
Ziegelei 1
SU
D-72336 Balingen
E-Mail: info@sauter.eu
Instruction Manual
DIGITAL SOUND LEVEL METER
Thank you for buying a SAUTER sound level Meter. We
hope you are pleased with your high quality instrument and
its big functional range. Although this Sound Meter is a
complex and advanced instrument, its ruggedness will
allow many years of use if you will care for an appropriate
operating technique and maintenance. Please read the
following operating instructions carefully and always keep
this manual within easy reach.
If there are any queries, wishes or helpful suggestions, do
not hesitate to call our service number.
Table of contents
1. Features
2. Specifications
3. Front panel description
4. Measuring procedure
5. Storing and recalling readings
6. How to set the “Leq” Time
7. How to set the alarm value
8. How to set the time of Auto Power off
9. Calibration
10. Considerations
11. Battery replacement
12. Takeover of data memory into software
13. Declaration of Conformity
1. Features
* Widely used to test the sound level of the environment,
machinery, vehicle, ships and other noise
* Multi functional: it offers 4 measurement parameters:
Lp (sound level), Lmax (maximum sound level),
Leq (equivalent continuous A sound level) and
Ln (percentage of all readings over alarm value set).
* With alarm set and alarm output
* This instrument permits choice of “A”, “C” or “Flat”
Weighting and “Slow” / “Fast” response times
* DC output: 0 up to 1.3V 10mV / dB
* Auto range selection and digital display with no reading
Errors
* Manual or automatic shut down. The tester can be
switched off by pressing the power key at any time.
On the other hand, the tester can be set to “Auto Power
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Off” between 1 to 9 minutes or disable Auto Power Off.
* The instrument can memorize 30 measurement
result s and measuring conditions for later use or down load to PC
* Can communicate with PC computer for statistics,
printing and analysing by the optional cable and the
software for RS 232C interface.
2. Specifications
Display: 14mm (0.5”) LCD with backlight
Parameters measured: Lp, Lmax, Leq, Ln
Measurement range: Lp: 30~130dB (A)
35~130dB (C)
35~130dB (F)
Leq: 30~130dB (10 s, 1 min, 5 min,
10 min, 15 min, 30 min, 1 h,
8 h, 24 h)
Ln: 0-100%
Resolution: 0.1dB
Accuracy: ± 1dB
Frequency weighting: “A”, “C”, “F” (Flat)
Time weighting: Fast (125ms)
Slow (1 second)
Microphone: ½ inch electret condenser type
Memory: 30 values with measuring conditions
Inbuilt calibration signal: 94dB at 1kHz (sinusoidal)
Frequency range: 20 to 12,500 Hz
Alarm value set: 30-130 dB
Alarm output: LED and optional relay contact (NC)
PC interface: RS 232C
Low battery indication
Power supply: 4 x 1.5V AAA (UM-4 battery)
External DC power supply: 6V DC, 100mA
Dimensions: 236 x 63 x 26 mm (9.3 x 2.5 x 1.0 inch)
Weight: 170 g (including batteries)
Standard equipment: Main unit
Carrying case
Instruction Manual
Foam cover
SU-BA-e-1311 1
Sauter GmbH
Ziegelei 1
SU
D-72336 Balingen
E-Mail: info@sauter.eu
Instruction Manual
Optional Accessories: Sound level meter calibrator
(ASU- 01) Cable and software
for RS 232C (ATC 01)
External relay, AC adapter
3. Front panel description
3-1 Calibration Mark
3-2 Time Weighting
3-3 Memory state
3-4 Mark for
3-5 Weighting Icon
3-6 Function Mark
3-7 Battery indicator
3-8 Max Hold
3-9 Number memorized
3-10 Browsing Icon
3-11 Microphone
3-12 Display
3-13 Alarm LED
3-14 Weighting key
3-15 Fast/Slow key
3-16 Up/Save key
3-17 Down/Read key
3-18 Function key
3-19 Max Hold key
3-20 Power key
3-21 Delete/Menu
3-22 Cal. Adjusting
3-23 Jack for RS 232C interface
3-24 Jack for output
3-25 Jack for AC
3-26 Battery compartment / cover
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Fax: +49-[0]7433-9933-149
Internet: www.kern-sohn.com
4. Measuring procedure
4.1 The
switch on the instrument.
4.2 It has to be checked whether the function selected is
right. If not, it can be changed by pressing the
3-18.
The default setting is Lp, weighting A, Fast.
Lp – current sound pressure level
Leq – Equivalent Continuous A Sound pressure Level, i.e.
arithmetically mean value in a period of time set.
Ln – Statistic analysis, i.e. which percentage of all
measurement values is larger than or equal to the alarm
value set by the user. For setting t he alarm value, please
see chapter 7.
4.3 It has to be checked whether the weighting is right. If
not, it can be changed by pressing the
select “A”, “C” or “Flat”.
With the “A” weighting selected, the frequency respons e of
the device is similar to the response of the human ear. “A”
weighting is commonly used for environmental or hearing
conversation programs such as OSHA regulatory testing
and noise Ordinance law.
“C” weighting is a much flatter response and is suitable for
the sound level analysis of machines, engines etc.
Note: Weighting “A” will be automatically selected
when measuring “Leq”.
4.4 The
(125ms) or a Slow (1 second) response time.
Fast has to be selected to capture noise peaks and noises
that occur very quickly.
Slow response has to be selected to monitor a sound
source that has a consistent noise level or to average
quickly changing levels. Slow response is selected for
most applications.
4.5 The reading is the highest one if the icon “max”
appears on the display. The reading is an instant value if
“max” does not appear. This appearance is controlled by
pressing the
measurement.
5. Storing and recalling readings
5.1 In
together with measuring conditions by pressing the
key 3-16. Then the icon
automatically, while the number of memorized readings
increases for 1.
key 3-20 has to be pressed and released to
key
key 3-14 to
key 3-15 has to be used to select a Fast
key 3-19 during the process of
state, the reading can be saved to the instrument
changes to state
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Sauter GmbH
Ziegelei 1
SU
D-72336 Balingen
E-Mail: info@sauter.eu
Instruction Manual
5.2 No matter, in or in state, the memorized data
can be browsed by pressing the
browsing state is marked by `R` on the display.
In `R` state, all the readings memorized, can be recalled
by pressing the
5.3 To delete the memorized value in memory, the
browsing state has just to be entered and the reading to be
deleted has to be located by pressing the
Then the
“Err0” on the display, this indicates that there is no more
reading to delete.
6. How to set the “Leq” Time
Leq is used to access the rms average noise l evel over a
preset period of time, often the staring point of a noise
assessment. To take the Leq measurement, the period of
time which has to be tested, must be selec ted. The longer
the period of measurement time, the more accurate the
Leq reading will be. To set the period of measurement
time, the
seconds until “Leq” appears on the display. Then t he key
has to be released and the time has to be select ed among
10s, 1 min, 5 min, 10 min, 15 min, 30 mi n, 1 hour, 8 hours
or 24 hours by pressing the Up (3-16) or Down (3-17) key.
To quit, any key except
7. How to set the alarm value
The alarm LED is on when the inst ant measurement value
is bigger than or equal to the alarm value set. The default
setting value at the factory is 85dB. It can be changed to
any value between 30 and 130dB by the following steps:
The
It has to be released after “AL” is shown on the display.
Then
alarm value as desired.
To quit, any key except
8. How to set the time of Auto Power off
The def ault setting for auto power off at the factory is 5
minutes, which means that the device will auto power off 5
minutes from the time of the last key operation. This can
be changed by the user to any value between 1 to 9
minutes by the following steps:
The
and it can be released after “AUTO” is shown on the
display. Then the
preset the time as desired. To stop the function of auto
power off, time just has to be pre set to “0”. So the devic e
key 3-21 has to be pressed for about 5 seconds.
key or key have to be pressed to preset the
key 3-21 has to be pressed for about 10 seconds
or key.
key 3-21 has to be pressed. If there appears
key 3-21 just has to be pressed for about 8
or key can be pressed.
or key can be pressed.
or key has to be pressed to
key 3-17. The
or key.
Tel: +49-[0]7433- 9933-199
Fax: +49-[0]7433-9933-149
Internet: www.kern-sohn.com
will not be powered off automatically, it can only be shut
down manually in that case.
9. Calibration
The standard method to calibrate the instrument requires
an external calibrator (ASU-01) in addition to a small
screw-driver.
9.1 Calibration of the device :
a) The device has to be turned on.
b) It has to be preset in the “A” weighting mode
c) It also has to be preset the “SLOW” response mode
d) Then the microphone has to be placed into the cali brator. The calibrator has to be switched ON.
e) The CAL potentiometer of the device has to be
adjusted in the way that the device’s display matches the
output of the calibrator.
9.2 Calibration of the device by the inbuilt signal
The instrument has to be switched on to enter the
calibration state. Then the
pressed until the icon “CAL” is to be seen on the display.
The screw-driver has to be used to adjust the CAL
potentiometer of the device in the way that the device
shows 94dB.
10. Considerations
10.1 Wind blowing across the microphone increases the
noise measurement. The supplied foam cover has to be
used to cover the microphone when applicable.
10.2 The instrument may not be dismantled by
inexperienced staff. There are no parts inside which might
serve the user.
11. Battery replacement
11.1 When the battery voltage is less than approx. 5V, it is
necessary to replace batteries.
11.2 The 4 x 1.5 V batteries have to be installed correctly
into the case .
11.3 If the device is not going to be used for an extended
period, batteries have to be removed.
Note: If the AC adapter is used, batteries should be taken
out.
12. Takeover of data memory into software
Important:
read out the stored data!
1. Connect the SU 130 to the PC (cable is optional
available with software ATC 01).
2. Put the SU 130 into the Memory Read Mode (by
pressing the READ-button).
First start the continuous data l oggi ng and then
key 3-18 has to be
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Sauter GmbH
SU
3. Start the appropriate software.
Ziegelei 1
D-72336 Balingen
E-Mail: info@sauter.eu
Instruction Manual
8. Pres s Continue Button- press button on SU 130 (e.g.
FAST/SLOW) – Data acquisition Real Time starts
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4. Select Port at System Settings at Interface Setup
(e.g. COM1, USB4 or similar).
5. Select Product Sound Level Meter.
6. Press Save (A) button and leave this window by Exit (X).
7. Open Data Collection.
9. Press READ- button on the SU 130- data in memory.
Readout of data starts and ends automatically with the
last stored memory.
10. Select data (all which appears after “data in
memory”)accordingly and continue processing.
SU-BA-e-1311 4
Sauter GmbH
SU
13. Declaration of Conformity
Ziegelei 1
D-72336 Balingen
E-Mail: info@sauter.eu
Instruction Manual
Tel: +49-[0]7433- 9933-199
Fax: +49-[0]7433-9933-149
Internet: www.kern-sohn.com
SU-BA-e-1311 5
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