SDI db checker User manual

dbchecker
TM
Sound Level Meter
 Ideal for maintenance of fire and security alarm systems
 Easy to use
 Unit conforms to the IEC651 type 2, ANSI S1.4 Type 2
(Required by NFPA 72 Chapter 14, 14.4.2.2.(15))
 Designed to meet the requirements of Life Safety Engineers
 Range from 32dB to 130 dB at frequencies between
31.5Hz and 8 KHz
 Display with 01.dB steps on a 4-digit LCD
 Two equivalent weighted sound pressure levels, A and C
AC Signal output available
is ideal for testing audible appliances for the
public operating mode of an emergency voice/alarm system
in accordance with manufacturers instructions.
dbchecker
TM

INSTRUCTIONS
Open battery cover and install a 9V battery in the battery
compartment.
Turn power ON and select the desired response time and
weighting. If the sound source consists of short bursts or
only catching sound peak, set response to FAST. To
measure average sound level, use the SLOW setting.
Select desired Level.
Hold the instrument comfortably in hand and point the
microphone at the suspected noise source, the sound
pressure level will be displayed.
When MAX/MIN ( maximum, minimum hold ) mode is
chosen. The instrument captures and holds the maximum
noise level for a long period using any of the time
weightings and ranges.
Press the MAX/MIN button 2 seconds to clear the
MAX/MIN reading. “MAX/MIN” symbol disappears.
Turn OFF the instrument.
(1)
(2)
(3)
(4)
(5)
(6)
SPECIFICATIONS
Standard Applied: IEC651 Type2, ANSI S1.4 Type2.
31.5Hz to 8KHzFrequency Range:
32dB to 130dBMeasuring Level Range:
A / CFrequency Weighting:
½ inch electrical condenser microphoneMicrophone:
LCDDisplay:
4 digitDigital Display:
0.1dBResolution:
0.5 sec.Display Update:
FAST ( 125mS ), SLOW ( 1 sec. )Time Weighting:
Lo: 32 dB to 80 dBLevel Ranges:
Med: 50 dB to 100 dB
Hi: 80 dB to 130 dB
Accuracy:
±1.5dB ( under reference conditions, 94dB@1kHz )
50 dBDynamic Range:
“OVER” is when the input is more than upper Alarm Function:
limit of range.
“UNDER” is when input is less than lower limit of range.
MAX / MIN Hold:
Hold readings the Maximum and Minimum Value.
1 Vms at FS ( full scale ).AC Output:
Output impedence: Approx 100 Ohms
FS: means the upper limit of each level range.
Power Supply:
One 9V battery, 006P or IEC 6F22 or NEDA 1604.
Approximately 70hours ( Alkaline Battery )Power Life:
0 to 40°C ( 32 to 104°F )Operation Temperature:
Operation Humidity: 10 to 75%RH
9.1” L x 2.1” W x 1.3” HDimensions:
23.1 cm x 5.3 cm x 3.3 cm
.75 lbs (.34kg) (including battery)Weight:
9V battery, screwdriver, instruction manual and Accessories:
windscreen.
WHY dBchecker?
Merely "listening" or utilizing any sound level meter available is not a
reliable method for testing audible alarm notification appliances. Many
of the meters currently on the market do not meet the requirements for
NFPA 72. dBchecker™ conforms to ANSI S1.4a, which is required to
meet the standard set forth in the latest edition of the National Fire
Alarm Code. (NFPA 72)
HIGHEST STANDARDS
" ….only sound level meters that comply with ANSI S1.42 should be
used for the assessment of fore alarm systems…"
" …Testing of Audible Alarm Notification Appliances shall be done upon
initial acceptance and semi-annually"
" …Sound pressure shall be measured with sound level meter meeting
ANSI S1.4a, Specifications for Sound Level Meters, Type 2
Requirements. Levels throughout the protected area shall be
measured and recorded…." NFPA 72 14.4.2.2 (15)
CAN/ULC S536-04, G1.1
" The sound level meter shall have a measurement range that permits
readings as low as 35 dBA..." "The use of a quality meter to minimize
any measurement errors. ANSI S1.40, Specifications for Acoustic
Calibrators, is one standard that can provide guidance on the subject."
LN, Oct
LT, Oct
Fire Alarm
Frequency (Hz)
10 100 1000 10,000
35
40
45
50
55
60
65
70
75
Sound Pressure Level (dB)
LI32187-4
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SDi,
1345 Campus Parkway, Neptune, NJ 07753-6815 USA
Tel: [phone] Fax: [phone]
Email: [email protected] Web: www.sdifire.com
Specialized Fire Products