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SL-4001

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���q�d�� : 30dB ~ 130dB (����)

���q�W�v�d�� : 31.5 ~ 8000Hz

��T�� : ��1.5dB (94dB/1KHz)

�ŦX��ڳW�dIEC61672 Class2

�����ɶ� : �ֳt : 0.2�� ' �C�t : 1.5��

A/C�[�v�������q���(Weighting)

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Size : 245x80x35mm.

FEATURES

Large LCD display, easy to read.

Frequency weighting networks are designed to meet the IEC 61672 CLASS 2.

A & C weighting networks are conformity to standards.

Time weighting(FAST & SLOW) dynamic characteristic modes.

AC/DC output for system expansion.

Build in adj. VR is available for easy calibration.

Condenser microphone for high accuracy & long-term stability.

Max. Hold function for stored the maximum value on display.

Warning indicator for over and under load.

LCD display for low power consumption & clear read-out even in bright ambient light condition.

Used the durable, long-lasting components, including a strong, light weight ABS-plastic housing case.

Small and light weight design allow one hand operation.

Low battery indicator.

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��� (Display)

18mm (0.7") LCD (Liquid Crystal Display), 3 1/2 digits.

�\�� (Function)

dB (A & C weighting), Time weighting (Fast, Slow), Max. hold, AC output, DC output.

���q�d�� (Measurement Range)

3 ranges, 30 to 130 dB, input signal only..

�ѪR�� (Resolution)

0.1 dB.

��T�� (Accuracy) (23�� 5 �J)

Frequency weighting meet IEC 61672 class 2, calibrating input signal on 94 dB ( 31.5 Hz to 8 kHz), the accuracy of frequency weighting is specified as following:

31.5 Hz : �� 3.5 dB

63 Hz �� 2.5 dB

125 Hz �� 2.0 dB

250 Hz �� 1.9 dB

500 Hz �� 1.9 dB

1 K Hz �� 1.4 dB

2 K Hz �� 2.6 dB

4 K Hz �� 3.6 dB

8 K Hz �� 5.6 dB

�[�v���� (Weighting Network)

Characteristics of A & C.

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.

���q�W�v (Measurement Frequency)

31.5 Hz to 8,000 Hz.

�ե��� (Calibrator)

B & K (Bruel & kjaer), multi-fuction acoustic calibrator, model : 4226.

���J�� (Microphone type)

Electric condenser microphone.

���J���ؤo (Size of microphone)

1/2 inch standard size.

�d���� (Range selector)

30 to 80 dB, 50 to 100 dB, 80 to 130 dB, 50 dB on each step, with over & under range indicating.

�ֺC�ɶ��[�v Time weighting (Fast, Slow)

Fast - t= 200 ms, Slow - t = 500 ms,

* "Fast" range is simulated the human ear response time.

* "Slow" range is easy to get the avg. values of vibration sound level.

�ե� (Calibration)

* Build in external calibration VR, easy to calibrate by external screw driver.

* Internal oscillation system, 1 KHz sine wave generator.

��X�T�� (Output Signal)

AC output - AC 0.5 Vrms corresponding to each range step.

DC output - DC 0.3 to 1.3 VDC, 10 mV / per dB.

Output impedance - 600 ohm.

��X�ݤl (Output terminal)

3.5 mm dia. phone output terminal is provided for connection with analyzer, level recorder, tape recorder.

�ާ@�ū� (Operating Temp. )

 0 to 50 �J.

�ާ@�ë� (Operating Humidity)

Less than 80% R.H.

�q������ (Power Supply)

006P DC 9V battery (heavy duty type)

�q���l�� (Power Consumption)

Approx. DC 6 mA.

���q (Weight)

280 g/0.62 LB (including battery).

�ؤo (Size)

205 x 80 x 35 mm ( 8.1 x 3.2 x 1.4 inch).

���� (Standard Accessory)

Instruction manual.................... 1 PC

Calibration screw driver.............. 1 PC.

���ʪ��� (Optional & accessories Temp. Probe)

94 dB sound calibrator, SC-941

94 dB/114 dB sound calibrator, SC-942

Hard carrying case, Model : CA-06.

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