The press instrument has many advantages , for example the measure range is 0 ~ 60mpa , the precision is one percent , and the hydraulic press of two roads was sampled every five minutes . this system makes use of the " data fusion " technique to compensate measuring errors caused by temperature changing . the press instrument has large storage space and can store about thirteen day ' s press data 该测试仪的主要特点是：测量量程为0 60mpa ，精度为1 ；每5分钟采集一次两路通道液压压力值；采用“数据融合”技术进行温度补偿；数据容量大，能存放约13天的压力数据； led显示器可交替显示两路压力值；无线数据通信功能，传输速率为9600kbps ；采用本安设计，可安全的应用于环境复杂的煤矿井下。
