介绍：
AST900是一种高性能的低无线通信温度计，基于我们的高精度温度变送器平台，结合低功耗技术，高可靠性的RF通信模块和大容量锂离子电池。 PC可以通过ASC400X数据采集终端读取变送器的实时温度数据，该终端有两种通讯接口：USB和MODBUS
AST900可以在没有外部电源的情况下正常工作，因此无需单独的电缆运行到现场
该仪器特别适用于无电源条件和传输实时数据，如油田，冶金等领域
技术参数：

• 动力电池：3.6V锂电池
• 工作时间：1 - 2年
• 范围：200-850℃
• 环境温度：25-60℃
• 功耗：通信瞬间峰值电流≤100mA，睡眠电流≤10uA
• 通信频段：470MHz（470MHz-510MHz可设置）
• 射频发射功率：17dBm
• 射频接收灵敏度：-105dBm
• 无线传输距离：开放距离300m，1500m
• 过程连接：M27x2（常规螺纹可定制）
• 侵入防护：IP54

Introduction:
The AST900 is a high-performance lower wireless communication temperature gauge which is based on our high accuracy temperature transmitter platform and combined with low power consumption technology, high reliability of RF communication modules and high-capacity Li-ion battery. PC can read the transmitter' s real-time temperature data by the ASC400X data collection terminal which has two kinds of communication interface: USB and MODBUS
The AST900 can work normally without external power supply so that no separate cable needs to be run to the field
The instrument is especially suitable for no power supply condition and transmission of real-time data, such as oil fields, metallurgy and other areas
Technical parameters:

• Power battery: 3.6V Lithium Cell
• Working time: 1-2 years
• Range: 200-850°C
• Ambient temperature: 25-60°C
• Power consumption: communication instantaneous peak current ≤100mA, sleep current ≤10uA
• Communication bands: 470MHz (470MHz-510MHz can be set)
• RF transmit power: 17dBm
• RF receiver sensitivity: -105dBm
• Wireless transmission distance: Open distance 300m, 1500m
• Process connection: M27x2 (Conventional thread can be customized)
• Ingress protection: IP54