lutron-sl 4001 sound level meter

Nieuw/ongebuikt id doos.

Display: 18 mm LCD, 3 1/2 digits
Function:
dB (A & C frequency weighting)
Time weighting (Fast=200ms / Slow=500ms)
Max. hold, AC output, DC output
Measurement range: 3 ranges: 35 to 130 dB (typical 30 to 130 dB), input signal only
Resolution: 0.1 dB
Accuracy (23 ± 5°C):
Frequency weighting meet IEC 651 type 2, calibrating input signal on 94 dB (31.5 Hz to 8 kHz), then
the accuracy of A weighting is specified as following:
31.5Hz 63Hz 125Hz 250Hz 500 Hz 1kHz 1kHz 2kHz 4kHz 8kHz
±3dB ±2dB ±1.5dB ±1.5dB ±1.5dB ±1.5dB ±1.5dB ±2dB ±3dB ±5dB
Frequency weighting
network:
A weighting: The characteristic is simulated as "Human Ear Listing" response. Typical, if making the
environmental sound level measurement, always select to A weighting.
C weighting: The characteristic is near the "Flat" response. Typical, it is suitable for checking the noise
of machinery (Q.C. check) & knowing the sound pressure level of the tested equipment.
Frequency: 31.5 Hz to 8,000 Hz
Calibrator: B & K (Bruel & k multi-function acoustic calibrator, model: 4226)
Microphone: electric condenser microphone
Size of microphone: 1/2 inch standard size
Range selector:
30 to 80 dB
50 to 100 dB
80 to 130 dB
50 dB on each step, with over & under range indicating
Time weighting:
(Fast & Slow)
Fast: t=200 ms ("Fast" range is simulated the human ear response time weighting)
Slow: t=500 ms ("Slow" range is easy to get the average values of vibration sound level)
Out terminal: 3.5 phone output terminal is provided for connection with analyzer, level recorder, tape recorder
Output signal:
AC output - AC 0.5 Vrms corresponding to each range step
DC output - DC 0.3 to 1.3VDC; 10 mV per dB
Output impedance: 600 Ohm
Calibration: Built-in external calibration VR, easy to calibrate by external screw driver
Internal oscillation system, 1 kHz sine wave generator
Operating temp.: 0°C to 50°C (32°F to 122°F)
Operating humidity: max. 90% RH (0 to 35°C)
Power supply: 006P DC 9V battery (heavy duty type)
Power consumption: approx. DC 6 mA
Dimension: 205 x 80 x 35 mm (8.1 x 3.2 x 1.4 inch)
Weight: 250 gr. including battery