To share a display means for displaying measurement results of the quantity of flow of gas by a plurality of types of gas meters in a printed circuit board, capable of being built in a gas meter for measuring the quantity of gas flow.
A circuit shared by gas meters of two types, a mechanical type counter for mechanically displaying the counted value of the quantity of flow of gas and a liquid crystal type counter for displaying the counted value of the quantity of flow of gas in a liquid crystal display, is formed in the printed circuit board (PCB) 30. In the case of the mechanical counter type, a liquid crystal display part 31 for displaying security information (and a sub-counter) is mounted. In the case of the liquid crystal counter type, a liquid crystal display part 32 for displaying a liquid crystal counter and security information is mounted. By selectively mounting the liquid crystal display parts to the PCB 30, the PCB 30 can be commonized by the two types of gas meters.
AIHARA TOSHIYUKI
SHOJI MASASHI
| JPH11108731A | 1999-04-23 | |||
| JPH0481014A | 1992-03-13 | |||
| JPH07234144A | 1995-09-05 | |||
| JPH11173895A | 1999-07-02 | |||
| JP2004132891A | 2004-04-30 | |||
| JPH11232582A | 1999-08-27 | |||
| JPH09283872A | 1997-10-31 | |||
| JP2003337057A | 2003-11-28 |
Susumu Iwano
Next Patent: ROTATION ANGLE DETECTOR