Abstract: A tank weighing transducer is described. In one embodiment, it comprises: a supporting ring, a cover, a gasket, a locking screw, a weighing sensor, a circuit board, a battery, a base, a supporter nut, a supporter screw, and a detachable supporter. The supporting ring and the cover are connected via the locking screw and the gasket. The weighing sensor and the circuit board are fixed on the base via the locking screw. The battery is put in a battery container on the base. The cover and the base are connected via the locking screw and the detachable supporter is fixed on the base via the supporter nut and the supporter screw. The tank weighing transducer is designed to withstand load for a long period, and has a good impact resistance. In addition, the tank weighing transducer is applicable for weighing the tank automatically for the long period.

Abstract: An RF electromagnetic radiation detector has a device that has a first terminal and a second terminal with a PN junction therebetween. The first terminal is connected to the P side of the PN junction and the second terminal is connected to the N side of the PN junction, with the device susceptible to a voltage being built across the PN junction in the presence of RF electromagnetic radiation. The detector is first reverse biased by connecting a first voltage to the first terminal and a second voltage, higher than the first voltage to the second terminal. Current is then measured from the second terminal, where the current measured is indicative of the presence of RF electromagnetic radiation. A temperature sensor has a load, that has a first terminal and a second terminal with the first terminal connectable to a first voltage. A capacitor has a third terminal and a fourth terminal with the third terminal connected to the second terminal and the fourth terminal connectable to a second voltage.