Triplett SONICHEK PRO 3550 Instruction Manual

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99 Washington Street Melrose, MA 02176 Phone 781-665-1400 Toll Free 1-800-517-8431
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SONICHEK
Professional Sound
Level Meter
Instruction Manual
1. Introduction
The Triplett Model 3550 Sound Level Meter is a quality sound level
measuring instrument with a set of functions that make it useful for a vari­
ety of professionals. With a backlight LCD display, 130dB full scale mea­
surement capability, both A and C-weighting measurement support, and
peak capture functions, it can help make many measurement tasks easier
2. Product Features
• Sound level range: 30dB to 130dB(Auto Ranging)
• A and C weighting for measurements
• Fast and Slow time response selection
• Max Hold function
• High accuracy
• Bar graph and large numeric display
• AC/DC output voltage function
• White LCD Backlight
• Over / Under Range indicator
• lime and date display
• Automatic Power-off function to conserve battery life
• Low Battery Alert
• Threaded tripod mount (Tripod not included)
• Soft carrying case, USB cable (power line function only), instruction
manual, AC/DC output leads, batteries included
• CE Certified & RoHS Compliant
3. Product Specifications
Designed according to standards
CallbraUon sound source
Measurement range
Accuracy
Frequency Response
Resolution
Measurement weighting
Bar graph dlsplay
Meter Response time
Numeric Display Response Rate
AC signal output
DC signal output
Power Source
Physical Dimensions
Weight
PRO
M
IEC651 (Type 2) and ANSI S1 .4
(Type 2)
94dB@1KHz
30-130dB
+1.5dB (reference sound pressure
standard, 94dB@1 KHz)
31.5Hz - 8.5KHz
0.1dB
A or C weighting
2dB/8ar graph increment
Fast (125 milliseconds),
Slow (1 second)
Fast (2 updates/second),
Slow (1 update/second)
2V(RMS) full scale (130 dB), out-
put impedance is approximately
600 Ohms
33mV/dB (per dB above 30dB
threshold detection level)
(4) AA (1.5V) batteries
(RS or LR6 or GR6M)
245mm x 70mm x 45 mm
Approximately 240 grams
(with batteries)
4. Product Description
1. Sponge ball (Mandatory for outdoor use to reduce wind noise)
2. USB socket (used for USB power only)
3. Capacitive microphone
4. LCD display with backlight
5. Power on/off switch
6. A/C frequency weighting selection button
7. MAX reading button
8. FAST/SLOW response button
9. Backlight button
10. Date and time switch button
11. Tripod mounting thread
12. Battery cover
13. AC output socket (for analog output)
14. DC output socket (for analog output)
5. LCD Display Features
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1. UNDER: Alarm symbol, if the reading below minimum, this symbol will
display.
2. MAX: When in this mode only the highest noise reading will display on
the main reading display
3. FAST: Fast time weighting (refer to respond speed)
4. SLOW: Slow time weighting (refer to respond speed)
5. OVER: Alarm symbol, if the measurement is over the maximum range
(130dB), this symbol will display.
6. Bar Graph: Sound levels are displayed via this graph and via the digital
display reading (see 8)
7. Date and Time Display (display current date and time)
8. Numeric measurement dlsplay
9. AUTO: Permanently displayed to indicate the meter is in auto ranging
mode
10. dBA: Measurement unit (A-weighting)
11. dBC: Measurement unit (C-weighting)
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12. Auto off symbol
13. � Low battery warning symbol-indicates that battery voltage is low
and that the batteries should be changed. If operating the unit from USB
cable-supplied power (5V), this symbol will also be activate.
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