KERN & SOHN SU 130 User Manual
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
Tel: +49-[0]7433- 9933-199
Fax: +49-[0]7433-9933-149
Internet: www.kern-sohn.com
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
Tel: +49-[0]7433- 9933-199
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
SU-BA-e-1311 2
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