I am looking for RF power meter to measure the output power of RF based PCB board which is estimated to give an output power of 45dBm at 868MHz.  

While searching for meter I have come across specification "Dynamic Range" which is about 70dB and the power meter comes along with the power sensor which says that the measurement range of power sensors I have seen is around -60 to +20 dBm. Can anyone help me whether these specifications are suitable for my application ?