KR-12A便携式粒子计数器是一款由日本理音（RION）公司生产的高性能空气粒子检测设备。该设备广泛应用于洁净室、制药工业、电子制造、食品加工、航空航天等领域，用于监测空气中的颗粒物浓度，确保环境质量符合相关要求。

KR-12A具有6通道颗粒范围，可检测0.3、0.5、0.7、1.0、2.0和5.0微米的颗粒。其光学系统采用90°侧面散射方式，配备激光二极管光源，确保测量结果的高精度和高可靠性。设备内置温度和湿度探头，能够实时监测环境温湿度，为用户提供更全面的环境信息。

该粒子计数器采用压力探头反馈电路自动控制流量，确保采样流量稳定在2.83升/分钟。其内部电池可支持连续运行8小时，充电时间仅需2小时，适合长时间户外或移动监测。此外，设备可保存500组数据，并通过RS-232C接口将数据传输至计算机，方便用户进行数据分析和记录。

KR-12A便携式粒子计数器还具备连接多个监测系统和串口打印机的功能，便于用户根据实际需求进行扩展。其尺寸为116毫米（宽）×211毫米（高）×65毫米（深），重量约为1千克，便于携带和操作。

The KR-12A portable particle counter is a high-performance air particle detection device produced by RION, a renowned Japanese company. Widely used in cleanrooms, pharmaceutical industries, electronics manufacturing, food processing, and aerospace fields, it monitors airborne particle concentrations to ensure environmental quality meets relevant requirements.

The KR-12A features a six-channel particle size range, capable of detecting particles of 0.3, 0.5, 0.7, 1.0, 2.0, and 5.0 micrometers. Its optical system employs a 90° sideway light-scattering method with a laser diode light source, ensuring high-precision and reliable measurement results. The device is equipped with an integrated temperature and humidity sensor, providing users with comprehensive environmental information.

The particle counter uses a pressure sensor feedback circuit to automatically control the flow rate, maintaining a stable sampling flow of 2.83 liters per minute. Its internal battery supports continuous operation for up to eight hours, with a charging time of only two hours, making it suitable for long-term outdoor or mobile monitoring. Additionally, the device can store 500 data sets and transfer data to a computer via an RS-232C interface, facilitating data analysis and record-keeping for users.

The KR-12A portable particle counter also has the capability to connect to multiple monitoring systems and serial printers, allowing users to expand according to their actual needs. With dimensions of 116 mm (W) × 211 mm (H) × 65 mm (D) and a weight of approximately 1 kg, it is easy to carry and operate.

KR-12A便携式粒子计数器由日本理音（RION）公司生产。其价格因销售渠道和促销活动等因素而有所不同。例如，上海路阳公司官网显示该产品价格为0元，但实际购买时需联系客服获取详细报价。建议用户根据自身需求，联系相关经销商或厂家获取最新的价格信息。