TDJ-814声级计是一款经济实用且功能丰富的声学测量仪器，广泛应用于多种场景，包括噪音工程、品质控制、健康防治以及各种环境噪音监测。例如，在学校、医院、商场、影剧院、办公室、道路交通、家庭和音响等场所，TDJ-814都能提供精准的音量测量。

该声级计采用高精度设计，测量范围宽达30至130分贝，能够满足从安静环境到高噪音场景的测量需求。其测量精度为±1.5分贝，确保了数据的可靠性。TDJ-814配备了LCD显示屏，尺寸为30×50毫米，显示清晰，便于用户读取数据。

此外，TDJ-814还具备多种实用功能。它支持快速和慢速反应速率选择，能够根据测量需求灵活调整。其最大值锁定功能可以记录测量过程中的最高声级，方便用户分析数据。TDJ-814还配备了AC类比信号输出接口，可以连接至频率分析仪或X-Y轴记录器，进行更深入的数据统计分析。

在硬件方面，TDJ-814采用了1/2英寸电容式麦克风，频率响应范围为31.5赫兹至8.5千赫，能够捕捉宽频段的声波信号。设备内置4位数显示，解析度为0.1分贝，取样率为每秒2次，确保了测量数据的实时性和准确性。

TDJ-814的设计注重用户体验。其一体式后支架方便用户在不同场景下使用，无论是手持还是固定测量都能轻松应对。设备采用6F22 9伏碱性电池或直流电源适配器供电，重量约为350克，尺寸为235×70×30毫米，便于携带和操作。工作环境温度范围为0至40摄氏度，相对湿度为10%至70%，适合在多种气候条件下使用。

TDJ-814声级计以其高性价比、精准测量和便捷操作，成为环境噪声监测和声学研究的理想选择。

The TDJ-814 Sound Level Meter is an economical and feature-rich acoustic measurement instrument, widely used in various scenarios, including noise engineering, quality control, health prevention, and environmental noise monitoring. For instance, it can be applied in schools, hospitals, shopping malls, theaters, offices, road traffic, homes, and audio settings to provide precise sound level measurements.

This sound level meter is designed with high precision, offering a wide measurement range from 30 to 130 decibels, which meets the needs of both quiet and high-noise environments. Its measurement accuracy is ±1.5 decibels, ensuring reliable data. The TDJ-814 is equipped with an LCD display, measuring 30×50 millimeters, providing clear and easy-to-read data for users.

In addition, the TDJ-814 features multiple practical functions. It supports both fast and slow response rate options, allowing users to adjust according to their measurement needs. The maximum value lock function can record the highest sound level during the measurement process, facilitating data analysis. The TDJ-814 also comes with an AC analog signal output interface, which can be connected to a frequency analyzer or X-Y axis recorder for more in-depth data statistical analysis.

On the hardware side, the TDJ-814 uses a 1/2-inch condenser microphone, with a frequency response range of 31.5 hertz to 8.5 kilohertz, capable of capturing wide-bandwidth sound wave signals. The device is equipped with a 4-digit display, with a resolution of 0.1 decibels and a sampling rate of 2 times per second, ensuring real-time and accurate measurement data.

The TDJ-814 is designed with user experience in mind. Its integrated rear bracket makes it convenient for users to use in different scenarios, whether for handheld or fixed measurement. The device is powered by a 6F22 9-volt alkaline battery or a DC power adapter, weighing approximately 350 grams, with dimensions of 235×70×30 millimeters, making it portable and easy to operate. The working environment temperature range is 0 to 40 degrees Celsius, with relative humidity of 10% to 70%, suitable for use in various climatic conditions.

With its high cost-effectiveness, precise measurements, and convenient operation, the TDJ-814 Sound Level Meter is an ideal choice for environmental noise monitoring and acoustic research.