· Accuracy: +/- 1.0dB (125Hz ~ 4Khz)
· Resolution: 0.1dB
· Frequency: 31.5Hz to 8Khz)
· Display: Large 0.7” (2000 count) LCD
· A & C Frequency Weighting
· Sound Meter Range: 30dB to 130dB (3 Ranges)
· Meets IEC 651 Type 1 Standards

Specifications

Display 18mm (0.7") LCD, 3 1/2 Digits
Function dB (A & C frequency weighting), Time weighting (Fast, Slow),
Max. hold, Max. hold reset, AC output
Measurement Range 3 Ranges, (30dB ~ 70dB, 60dB ~ 100dB, 90dB ~ 130dB)
Resolution 0.1 db
Accuracy
(23 ± 5°C) Time weighting & frequency weighting meet IEC 651 type 1, calibrating input signal on 94 dB(31.5 Hz to 8 kHz), then the accuracy of A weighting is specified as following:.
31.5Hz ~ ± 1.5dB, 63Hz ~ ± 1.5dB, 125Hz ~ ± 1dB, 250Hz ~ ± 1dB,
500Hz ~ ± 1dB, 1kHz ~ ± 1dB, 2kHz ~ ± 1dB, 4kHz ~ ± 1dB,
8kHz ~ ± 2dB to -3dB
Frequency Weighting Network Characteristics of A & C.
A weighting - The characteristic is simulated as "Human Ear Listening" response. Typical, if making the environmental sound level management, 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 ~ 8,000 Hz
Calibrator B & K (Bruel & Kjaer), multi-function acoustic calibrator, model: 4226
Microphone Electric condenser microphone
Size of Microphone 0.5" standard size
Range Selector 30 to 70dB, 60 to 100dB, 90 to 130dB, 40dB on each step, with over & under range indicating.
Time Weighting
(Fast & Slow) Fast - t=200ms, Slow - t=500ms
*Fast range is simulated the human ear response time weighting.
*Slow range is easy to get the average values of vibration sound
 level.
*The "Fast" & "Slow" time weighting range are designed to IEC 651
 type 2 requirement.
Output Signal AC output - AC 0.4 Vrms corresponding to each range step.
Calibration Build in external calibration. VR, easy to calibrate on 94 dB level by screw driver. Internal oscillation system, 1 KHz sine wave generator.
Out Terminal 3.5mm dia. phone output terminal is provided for connection with analyzer, level recorder, tape recorder.
Operating Temperature 0°C ~ 50°C (32°F to 122°F)
Operating Humidity Max. 90% RH (0°C ~ 35°C)
Power Supply DC 9V battery x 2 PCs, 006P, MN1604 (PP3) or equivalent, heavy duty or alkaline type.
Power Consumption Approx. DC 17mA
Dimension 260 x 87 x 36mm (10.2 x 3.4 x 1.4 inch)

Weight 450g/0.99 LB
Standard Accessories Instruction Manual, Carrying case
Optional Accessories 94dB Sound Calibrator, Model: SC-940, model: SC-941