The HHSL402SD is a generalpurpose
handheld instrument that
measures the noise level of an
environment or the sound level
produced by a piece of machinery.
Using an integrated 13 mm (0.5")
condenser microphone, the meter
can measure sound levels from
30 to 130 dB with a resolution of
0.1 dB and show the results on a
front-panel liquid-crystal display.
Several features and capabilities
enhance the meter’s versatility.
Among them are autoranging,
the ability to hold readings and
display maximum and minimum
readings, and user-settable
measurement parameters such
as frequency weighting (using the
“A” and “C” standards) and time
weighting (fast or slow). Because
it is microprocessor-based, the
HHSL402SD can make full use of
the portability, reliability and large
storage capacities that SD memory
cards offer.
Measurements can be made
automatically at any sampling rate
between one second and one hour.
After timestamping and storing
the measurements on an SD card
plugged into the instrument, the
user can remove the card and
plug it into to a laptop or desktop
computer either directly or via a
USB card reader. The data points
are stored on the card as files
with the .xls extension, which can
be opened by Microsoft’s Excel
application. The HHSL402SD has
a backlit 64 mm (2.5") diagonal
display and is powered by six “AA”
alkaline batteries or an optional
9V AC/DC adaptor.
SPECIFICATIONS Display Type: LCD with green backlight Display Size: 52 x 38 mm (2.05 x 1.5") Parameter Measured:dB Frequency Range: 31.5 Hz to 8 kHz Measurement Range: 30 to 130 dB in autoranging mode User can also select fixed range of 30 to 80 dB, 50 to 100 dB, or 80 to 130 dB Measurement Weighting: By Frequency: Frequency weighing uses “A” or “C” standard By Time: Time weighting is fast or slow (200 or 500 ms response time) Measurement Accuracy: With “A” frequency weighting: ± 3.5 dB @ 31.5 Hz, 2.5 dB @ 63 Hz, 2 dB @ 125 Hz, 1.9 dB @ 250 Hz, 1.9 dB @ 500 Hz, 1.4 dB @ 1 kHz, 2.6 dB @ 2 kHz, 3.6 dB @ 4 kHz, 5.6 dB @ 8 kHz Measurement Resolution: 0.1 dB Data Logging Sampling Time: 1 second to 1 hour Settable Parameters: Date, time, auto power off, beep sound, sampling time, decimal point or comma decimal division, “A” or “C” frequency weighting, fast or slow time weighting Storable/Recallable Readings: Maximum, minimum SD Card Capacity: 1 to 16 GB Operating Temperature: 0 to 50°C (32 to 122°F) Operating Relative Humidity: 0 to 85% Power Supply: Six alkaline “AA” batteries or optional 9 Vdc AC adaptor Power Consumption: • 8 mADC (normal operation, with backlight off and SD card not saving data) • 30 mADC with backlight on and card saving data • 44 mADC with backlight on and card saving data Dimensions of Meter: 245 x 68 x 45 mm (9.65 x 2.68 x 1.77") Weight of Meter: 489 g (1.08 lbs)
† All dollar amounts on this site are shown in Singapore currency.
Note: Comes complete with sound wind shield ball, 6 “AA” batteries, hard carrying case, 2 GB SD memory card, and operator’s manual.
