DTR131微波流量探测器:
DTR131是一个利用多普勒效应的非接触式微波运动探测器。电子器件发射一个信号，该信号被运动的物料反射。当物料运动时，返回信号的频率或高或低于发射信号频率。如果这两个信号的频率相同，则认为物料没有运动。
DTR131发射的微波的能量为0.15mw/cm（天线的角），该水平远远低于的安全指标10mw/cm，DTR经过FCC-15F认证。
DTR131能测量发射微波与反射微波之间频率的不同。所能接收到的微波能量的改变（例如由于天线前有堆积物料）对有料流/无料流探测没有影响。
工作参数：
探测范围： 0到5英尺(根据用途)
工作频率(微波)： 24.124GHz
工作压力: 15psi
环境温度: -20~60℃
传感器表面温度: 80℃
供电电压: 220VAC/50Hz
继电器输出触点: 4A/500VA/250V
开关延迟: 2到10秒
外壳材质: 铝
防爆认证: FM认可,防尘,放火Ⅱ级,Div.1,GrpsE-G
适用的行业：
建材：水泥（石灰石、熟料、白云石），石膏、木屑
化学：添加剂，包括化肥，粉末，油漆，塑料颗粒，硅石等
食品：咖啡，快餐，茶叶，干果，谷物，动物饲料等
能源：碎煤，飞灰，焦炭等
DTR131 is a contactless microwave motion detector using doppler effect. The electronic device emits a signal which is reflected by moving material. When the material moves, the frequency of the return signal is either high or lower than that of the transmitted signal. If the frequency of the two signals is the same, it is considered that the material does not move. DTR131 the energy of the emitted microwave is 0.15 mw/cm( the angle of the antenna), which is far below the internationally recognized safety indicator 10 mw/cm,DTR certified by FCC-15F. DTR131 can measure the frequency difference between the emitted microwave and the reflected microwave. the change in the microwave energy that can be received (e.g. due to the accumulation of material in front of the antenna) has no effect on the material flow/no material flow detection. Working parameters: Range :0 to 5 feet (for use) Frequency of operation (microwave): GHz 24.124 Maximum working pressure :15 psi Ambient temperature :-20~60℃ Highest temperature on sensor surface :80℃ Voltage supply :220 VAC/50Hz Relay output contacts :4 A/500VA/250V Switch delay :2 to 10 seconds Material: Aluminum Explosion proof: FM approval, dust proof, fire class II, Div.1,GrpsE-G. Applicable industries: Building materials: cement (limestone, clinker, dolomite), gypsum, sawdust Chemistry: Additives, including fertilizers, powders, paints, plastic particles, silica, etc. Food: Coffee, fast food, tea, dried fruit, grain, animal feed, etc. Energy: coal, fly ash, coke, etc.
