JPH0466527U

JPH0466527U -

Info

Publication number: JPH0466527U
Application number: JP11119790U
Authority: JP
Priority date: 1990-10-23
Filing date: 1990-10-23
Publication date: 1992-06-11

Description

[Brief explanation of the drawing]

第１図は本考案の一実施例における流量計用ア
ナログ出力回路の回路ブロツク図、第２図は別の
実施例における流量計用アナログ出力回路の回路
ブロツク図、第３図は従来の流量計用アナログ出
力回路の回路ブロツク図である。１ａ，１ｂ……電源端子、３……電源回路、５
……電流出力回路、７……定電流回路、８……信
号処理回路、９……検出器、１１……Ｆ／Ｉコン
バータ（電流出力回路）。 Fig. 1 is a circuit block diagram of an analog output circuit for a flowmeter in one embodiment of the present invention, Fig. 2 is a circuit block diagram of an analog output circuit for a flowmeter in another embodiment, and Fig. 3 is a circuit diagram of a conventional flowmeter. FIG. 2 is a circuit block diagram of an analog output circuit for use in a computer. 1a, 1b...Power terminal, 3...Power circuit, 5
... Current output circuit, 7 ... Constant current circuit, 8 ... Signal processing circuit, 9 ... Detector, 11 ... F/I converter (current output circuit).

Claims

[Scope of utility model registration request]

a detector that outputs a signal according to the flow rate of the fluid;
In a flowmeter equipped with a signal processing circuit that processes signals from this detector and outputs a pulse signal according to the flow rate of the fluid, there is a power supply terminal to which DC power of a constant voltage is supplied from the outside, and this power supply terminal. a power supply circuit consisting of a converter that converts DC power from the source into DC power of a predetermined voltage, and a power supply circuit connected in parallel with the power supply circuit to the power supply terminal to convert the pulse signal from the signal processing circuit into a current corresponding to the power supply circuit. A current output circuit including a converter for conversion and a constant current circuit connected in series with the power supply circuit to supply current to the power supply circuit are provided. Supplying a power supply to a processing circuit and a current output circuit, setting the drive current of the power supply circuit to a minimum current of the current signal output or less, and adjusting the current value of the DC power supplied to the power supply terminal according to the flow rate of the fluid. An analog output circuit for a flowmeter, characterized by having a configuration that changes the flowmeter.