Overview
Enviro Test Construct Noise Level Decibel Meter is a complex and precise device for precise measurement of sound. The instrument has a durable structure and can be used normally for several years under proper operation conditions.
Features
- High Sensitivity
- Fast response
- Low consumption
- Excellent stability
- Long service life
Technical Specifications
| Measurement range | Range | 30 dB to 130 dB |
| Signal output mode | RS 485 | |
| Accuracy | 64.4 °F to 82.4 °F (23 ℃ to ±5 ℃) The frequency weighting accords with the IEC 61672 type 2 standard and calibrated under the condition of input signal 94 dB (31.5 Hz to 8 kHz). | |
| Frequency range | 31.5 Hz to 8 kHz | |
| Time response | Quick response: T = 200 ms Time response simulate human ear’s time response | |
| Calibrator | B&K (Bruel & Kjaer company), multi-function sound calibrator model: 4226. | |
| Microphone | Capacitor microphone | |
| Size of Microphone | 0.5 in (12.7 mm) | |
| Range | 30 dB to 130 dB | |
| Maximum output resistance | 200 Ω | |
| The power supply mode | DC 12 V | |
| Power consumption | DC 12 V: ≈ 20 mW | |
| Installation method | The transfer plate is placed in a round black pipe with a length of 7.0 in (180 mm), an outer diameter of 0.98 in (25 mm), and an inner diameter of 0.708 in (18 mm), seal treatment on both sides | |
| External packaging | ABS plastics | |
| Working temperature | 32 °F to 122 °F (0 ℃ to 50 ℃) | |
| Working humidity | <80% relative humidity | |
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