RS PRO RS-1151 User manual

Instruction Manual
RS-1151
146-4651
Datalogger Sound Level Meter

Datalogger Sound Level Meter / EN
09/15/17 Version No. 00
CONTENTS
Title Page
1. INSTRUMENT CARE............................................................................1
2. FEATURES...........................................................................................2
3. SPECIFICATIONS................................................................................3
4. CONTROLS AND FUNCTIONS............................................................5
5. DISPLAY DESCRIPTION.....................................................................8
6. PREPARATION FOR USE ...................................................................9
7. CALIBRATION PROCEDURE............................................................10
8. OPERATING INSTRUCTIONS...........................................................11
8-1 Setting the Real-Time...................................................................11
8-2 Taking Sound Level Measurement................................................11
8-3 Auto Datalogging ..........................................................................12
8-4 Auto-Cycle Timer Datalogging ......................................................13
8-5 No-Cycle Timer Datalogging.........................................................14
9. OUTPUT CONNECTORS...................................................................15
10. SOFTWARE INSTALLATION AND OPERATION.............................15

Datalogger Sound Level Meter / EN
09/15/17 Version No. 00 1
1. INSTRUMENT CARE
Do not attempt to remove the mesh cover from the microphone as this will
cause damage and affect the accuracy of the instrument.
Protect the instrument from impact. Do not drop it or subject it to rough handling.
Transport it in the supplied carrying case.
Protect the instrument from water, dust, extreme temperatures, high humidity
and direct sunlight during storage and use.
Protect the instrument from air with high salt or sulphur content, gases and
stored chemicals, as this may damage the delicate microphone and sensitive
electronics.
Always turn the instrument off after use. Remove the batteries from the
instrument if it is not to be used for a long time. Do not leave exhausted
batteries in the instrument, as they may leak and cause damage.
Clean the instrument only by wiping it with a soft, dry cloth or, when necessary,
with a cloth lightly moistened with water. Do not use any solvents, alcohol or
cleaning agents.

Datalogger Sound Level Meter / EN
2 09/15/17 Version No. 00
2. FEATURES
The Sound Level Meter complies with the requirements of IEC 61672-1: 2013
standard for a Class 2 instrument.
The instrument contains several features which permit sound level
measurements under a variety of conditions.
Features include:
Ease of use
Easy to read large display
Three measurement ranges
Fast, Slow and Impulse time weightings
A, C and Z frequency weightings
Maximum, Minimum and Peak hold sound pressure level
Both AC and DC signal outputs are available from a single standard 3.5mm
coaxial socket suitable for use with a frequency analyzer, level recorder, FFT
analyzer, graphic recorder, etc.
Micro-USB interface
Auto data memory micro SD CARD 4GB
Back-screw for tripod fixture
※ Protected by:
Taiwan: D170349
U.S.A. : US D741,733
China : ZL 2014 3 0449747.6

Datalogger Sound Level Meter / EN
09/15/17 Version No. 00 3
3. SPECIFICATIONS
Applicable standards: IEC 61672-1: 2013 Class 2
ANSI S1.4: 1983 Type 2
Measurement functions:
•Main processing functions
Current time-weighted sound pressure level A, C or Z
MaxL: Maximum time-weighted sound pressure level A, C or Z
MinL: Minimum time-weighted sound pressure level A, C or Z
PK: Peak sound pressure level A, C or Z
•Total range: 30 to 130dB
•Max. measurement level: 130dB
•Total linear operating range:In accordance with IEC 61672-1, A-weighted,
1000Hz: 30dB to 130dB
•Level range selection: 3 range in steps 30 to 90dB, 45 to 110dB, 65 to 130dB
Frequency range: Overall characteristics including microphone: 31.5 to
8000Hz
Frequency weighting: A, C and Z filter weightings satisfying IEC 61672-1
Class 2
Time weighting (RMS detection):Fast (F), Slow (S) and Impulse (I)
according to IEC 61672-1 class 2
•Reference conditions:
Type of the acoustic field:Free
Reference sound pressure level: 114.0dB (related to 20µPa)
Reference level range:65 to 130dB
Reference frequency:1000Hz
Reference temperature:+23℃
Reference relative humidity:50%RH
Reference static pressure:101.325 kPa
Reference incidence direction: Perpendicular to the front of the microphone
diaphragm.
•Calibration: Acoustic using sound calibrator.
Calibration check frequency is 1000Hz
Nominal calibration level for the free field: 114.1dB
Nominal calibration level for the diffuse field: 114.0dB
•Frequency for acoustic testing:8000Hz
•Warm-up time:≦2min

Datalogger Sound Level Meter / EN
4 09/15/17 Version No. 00
Display LCD
•Display screens:
4 digit numerical indication of sound level, from 30.0 to 130.0dB with 0.1dB
resolution.
Bar-graph indication of current sound level with 2dB resolution.
Sound level range indicator: 30 – 90dB, 45 – 110dB or 65 –130dB in 3 ranges.
•Display update rate: 0.5 second
•Display first indication: Depends on the condition the instrument when it was
last turned off.
•Warning indications:
Out-of-range indications: OVER displayed at upper limit of the range
UNDER displayed at lower limit of the range
Data logger capacity: micro SD CARD 4GB (Maximum 99 blocks).
Outputs
•AC output (using selected frequency weighting)
Output voltage:1Vrms (at full-scale of the range)
Output impedance: 5kΩ
Load impedance:≧1MΩ
•DC output
Output voltage: 10mV/dB
Output impedance: 5kΩ
Load impedance: ≧1MΩ
Power requirements
•One 006P 9V or IEC 6F22 or NEDA 1604 battery.
•Battery life: Approx. 7 hours
•Power consumption: ~25mA
Ambient conditions:
•Operating conditions:-10℃to+50℃,30%to90%RH non-condensing,65kPato
108 kPa
•Storage conditions: -10℃to +60℃, <70%RH non-condensing, 65 kPa to
108 kPa
•Effect of temperature: < 0.5dB (-10 to +50℃)
•Effect of humidity: < 0.5dB (for 30%RH to 90%RH at 40℃, 1000Hz)
Dimensions: Approx. 235(L) ×64(W) ×26(H) mm
Weight (including battery): Approx. 190g
Supplied accessories: Instruction manual, Battery, Adjustment screwdriver,
Windscreen, 3.5φplug, Carrying case, CD Software, micro-USB cable.
Optional accessory: AC adaptor DC 9V 100mA

Datalogger Sound Level Meter / EN
09/15/17 Version No. 00 5
4. CONTROLS AND FUNCTIONS
1. Microphone: Electret Condenser microphone
2. Display: The LCD shows the sound level as a numeric value and a bar graph.
The display also shows the operation mode of the instrument, the
selected measurement parameters and warning indications.
3.
Power key: Press key to turn on the meter.
Press key for 3 seconds to turn off the meter.

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4. key:
TIME key: Press this key to switch the minute:second (m:s), day-hour (d-h)
and Year÷Month (Y÷M) display.
LOG key: Press this key for 3 seconds to enter or exit the auto datalogging
mode.
 ► key : In the setting mode, press this key to move cursor to the desired position.
5. key: Sets the time weighting to FAST (F), SLOW (S) or Impulse (I).
FAST: Uses a 125ms time-constant. This setting is used in most situations.
SLOW: Uses a 1s time constant, which smoothes out fluctuating levels.
Impulse: Uses a 35ms time constant. Which was traditionallyused to displayan
impulsive type noise, allowing the maximum levels to be more easily
seen on a changing display.
6. key: Sets the frequency weighting to A,C or Z.
7. key:
LEVEL key: Level range key: Select the level range for the measurement.
The following 3 settings are available: 30 to 90dB, 45 to 110dB,
65 to 130dB.
▲key: In the setting mode, press this key to change the parameter.
8. key:
MAX key: Used for reading the Maximum (MaxL blinking display), Minimum
(MinL blinking display) and Current (MaxL and MinL are blinking
display) time-weighted sound level encountered during a
measurement and it’s occurred date and time.
MAX measurement:
a. Press MAX key to enter the maximum recording mode, the “MaxL” mark
is blinking displayed.
b. Press ▲key to circulate the display of the Maximum (MaxL), Minimum
(MinL) and Current (MaxL MinL) reading and its occurred date and time.
Press TIME key to switch display the date and time m:s, d-h and Y÷M.
c. Press MAX again to restart the maximum recording mode.
d. Press MAX key for 3 seconds to exit this mode.

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09/15/17 Version No. 00 7
PEAK key: The maximum level in dB reached by the sound pressure at any
instant during a measurement period. It is the true peak level of the
pressure wave, which should not be confused with the highest
sound pressure level, termed MaxL.
Sets the Peak frequency weighting and measurement:
a. Press and hold down PEAK key then Press key to turn on the meter,
until the “ ” mark is displayed.
b. Press key to sets the desired peak frequencyweighting A, C or Z.
c. Press ↵key to exit and the “ ” mark is displayed.
d. Press PEAK key again to restart the peak measurement.
PEAK and Maximum recording measurement:
a. In the peak measurement mode, press MAX key to enter the maximum
recording mode.
b. Press ▲key to circulate the display of the Maximum (MaxL blinking),
Minimum (MinL blinking), Current (MaxL and MinL blinking) and Peak
(dBPK blinking) reading and its occurred date and time. Press TIME key
to switch display the occurred date and time m:s, d-h and Y÷M.
c. Press MAX again to restart the peak and maximum recording mode.
d. Press MAX key for 3 seconds to exit this mode.
↵key: In the setting mode, press this key to store the setting data and exit.
9. CAL potentiometer: Calibration potentiometer for level adjustment.
10. Micro-USB socket
11. DC/AC output socket:
DC output signal corresponding to sound level.
AC output signal with frequency weighting.
12. AC adapter power input jack (DC 9V 100mA).
13. Tripod mounting: ¼” - 20 UNC Female thread.
14. Battery cover.
15. microSD CARD 4GB.

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5. DISPLAY DESCRIPTION
: No-cycle timer datalogging mode indication.
 : Auto-cycle timer datalogging mode indication.
: No-cycle timer datalogging stop indication.
A: Datalogging mode indication.
M: Disappeared or appeared one time store one sets data into the memory.
FULL: Data records full indication.
÷ Y÷M: Year÷Month indication.
-d-h: Day-Hour indication.
: m:s: Minute:second indication.
: Battery capacity indication.
: Sound level range indication.
: Bar graph shows the current sound level (2dB resolution) indication.
UNDER: Under - range indication.
OVER: Over - range indication.
: A, C or Z frequency weighted PEAK sound level indication.
FSI: Fast, Slow or Impulse time weighting indication.
MaxL: Maximum time-weighted sound level reading indication. (blink displayed)
MinL: Minimum time-weighted sound level reading indication. (blink displayed)
dB: Sound level reading (0.1dB resolution) indication.
ACZ: A, C or Z frequency weighting indication.