Measurement, monitoring and recording of the environmental condition is the essential and sometimes statutory requirements, to observe the small change or deviation in the results of measurements in calibration and testing laboratories as well as other scientific applications. This motivated the authors to develop a precision wireless environment conditions, measurement, monitoring and recording (WEMMR) device. The present paper describes the design and development of an indigenous precision WEMMR device. The WEMMR is comprised of a micro-electromechanical sensor (MEMS; BME-280) capable to measure, monitor and record three parameters related to prevailing environmental conditions in the room, i.e., ambient temperature (T) in the range (0–100) °C, ambient pressure (P) in the range (300–1100) mbar and relative humidity (H) from (0–100)%. The system was developed using microcontroller (ATmega328) and Wi-Fi module (ESP8266) for wireless operation. These environmental conditions were also used to determine the prevailing air density (ρ_air) in the room and display the same on the monitoring panel. The monitoring and recording of ρ_air are extremely important parameters in measurement and realization of mass and mass-related quantities, i.e., force, pressure, flow and ultrasonic power. Apart from monitoring, recording of the data device is also capable to transmit the data to remotely located computer through internet connectivity. The developed WEMMR device had been calibrated against national standards available at the National Physical Laboratory, India, for ambient temperature, ambient pressure and humidity ranged for (10–50) °C, (300–1100) mbar and (30–80)%, respectively. The uncertainty in the ambient temperature, ambient pressure and relative humidity has been evaluated as ± 0.37 °C, ± 0.31 mbar and ± 0.71%, respectively.

中文翻译：

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用于计量和其他科学应用的远程无线环境条件测量，监视和记录设备的开发

测量，监视和记录环境条件是必要的，有时甚至是法定要求，以观察校准和测试实验室以及其他科学应用中测量结果的微小变化或偏差。这激发了作者开发一种精确的无线环境条件，测量，监视和记录（WEMMR）设备。本文介绍了本地精密WEMMR设备的设计和开发。WEMMR由微机电传感器（MEMS; BME-280）组成，该传感器能够测量，监视和记录与室内主要环境条件相关的三个参数，即环境温度（T）在（0-100）范围内°C，环境压力（P）在（300–1100）毫巴范围内，相对湿度（H）为（0–100）％。该系统是使用微控制器（ATmega328）和Wi-Fi模块（ESP8266）进行无线操作而开发的。这些环境条件也被用来确定当时的空气密度（ρ_空气在室内），并显示在监视面板上相同。的监测和记录ρ_空气在测量和实现质量以及与质量有关的量（即力，压力，流量和超声功率）中，是非常重要的参数。除了监视之外，记录数据设备还能够通过Internet连接将数据传输到远程计算机。已开发的WEMMR设备已根据印度国家物理实验室的国家标准进行了校准，其环境温度，环境压力和湿度范围为（10–50）°C，（300–1100）mbar和（30–80）％ ， 分别。评估环境温度，环境压力和相对湿度的不确定度分别为±0.37°C，±0.31 mbar和±0.71％。