High-frequency detectors FMW are a reliable mean of an intruders detectionin sensitive outdoors. FMW are bi-station microwave sensors consisting of atransmitter and a receiver. The principle of operation is to generate anelectromagnetic field in the space between a transmitter and a receiver. Whenthe detection zone is crossed, an alarm is generated by opening output contactsof relay (dry contact) to prevent the intrusion. In comparison with infraredsensors, this system is unaffected by the changeable weather. Snow, rain, fog,moving of small animals, low vegetation will not generate a false alarm. Thedetectors have the following characteristics: zone length -10300 m; zone width- 1, 55 m; zone height - 23 m; frequency - 9,45 GHz, temperature- -50+65C, power source -10-30 V DC; current- 0,045 A.
FMW are bi-station microwave sensors consisting of atransmitter and a receiver. The principle of operation is to generate anelec
FMW are bi-station microwave sensors consisting of atransmitter and a receiver. The principle of operation is to generate anelec |
In the fields of biological sample storage, medical cold chain transportation, and laboratory research, the normal operation of liquid nitrogen tanks is crucial for the cryogenic storage of biological samples such as cells, embryos, and frozen sperm. However, there are many ...
In the laboratory, some samples need to be stored at low temperatures, and liquid nitrogen storage tanks are usually used. Its normal operation requires a certain amount of liquid nitrogen in the container to ensure the safety of the samples. However, liquid nitrogen is easily ...
Come From Tianchi Cryogenic Machinery Equipment Manufacturing
Theliquid nitrogen level alarm is a monitoring instrument used to sense temperature changes and liquid level heights in various low-temperature liquid nitrogen containers. When the liquid level in the liquid nitrogen tank drops to a certain level, the alarm device will be ...