The world has seven continents, each with its highest mountain peak. It is becoming more and more popular for climbers to try and climb all seven summits, which are also known as the Seven Sisters. Only a handful of people has succeeded. To reach the top of any of these is a huge achievement.
A load cell is a transducer that is used to create an electrical signal whose magnitude is directly proportional to the force being measured. The various load cell types include hydraulic, pneumatic, and strain gauge.
Load-weighing apparatus in elevators serve the purpose of generating load-proportional signals which are required for the elevator control. In simpler designs of elevator systems it is generally sufficient to generate signals which indicate the conditions occupied, full load, and overload.