Digital Sound Level Meter Manufacturer,Supplier and Exporter in China
Product Code : EL-PLE-11892
Features:
• Large LCD display, easy to read
• Frequency weighting networks are designed to meet the IEC 651 type 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
Technical Specification:
• Display: 18mm (0.7") LCD (Liquid Crystal Display), 3 1/2 digits
• Function: dB (A & C frequency weighting), Time weighting(Fast, Slow), Max. hold, AC & DC output
• Measurement Range: 3 ranges, 30 to 130 dB, input signal only
• Resolution: 0.1 dB
• Accuracy(23 ± 5):
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:
• 31.5 Hz - ± 3 dB, 63 Hz - ± 2 dB, 125 Hz - ± 1.5 dB
• 250 Hz - ± 1.5 dB, 500 Hz - ± 1.5 dB, 1 kHz - ± 1.5 dB
• 2 kHz - ± 2 dB, 4 kHz - ± 3 dB, 8 kHz - ± 5 dB
• Frequency 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.
• Frequency: 31.5 Hz to 8,000 Hz
• Calibrator: B & K: (Bruel & kjaer), multi-fuction 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, Slow - t = 500 ms,
• "Fast" range is simulated the human ear response time weighting.
• "Slow" range is easy to get the average values of vibration sound level
• Calibration:
• Build in external calibration VR, easy to calibrate by external screw driver.
• Internal oscillation system, 1 KHz sine wave generator
• 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.
• Out put impedance - 600 ohm
• Out terminal: 3.5 phone output terminal is provided for connection with analyzer, level recorder, tape
recorder
• Operating Temp.: 0ºC to 50ºC ( 32ºF to 122ºF )
• Operating Humidity: Less than 80% RH
• Power Supply: 006P DC 9V battery(heavy duty type)
• Power Consumption: Approx. DC 6mA
• Dimension: 205 x 80 x 35 mm ( 8.1 x 3.2 x 1.4 inch)
• Weight: 280 g/0.62 LB (including battery)
