Flow meter monitoring device and flow meter monitoring method

摘要

The present invention provides an apparatus capable of making a monitoring function only when necessary when using a flow meter such as an oxygen flow meter. A flowmeter monitoring device 10 is a device for monitoring the flow rate of a float type flowmeter 20, and includes at least one limit value setting unit 3 for setting a flow rate range and the limit value setting unit 3. The control unit 5 controls the display of the positional relationship between the set flow rate range and the float 21 and the display unit 8 controlled by the control unit 5 to display the positional relationship, and the limit value setting unit 3 Is provided with at least one light emitting unit 1 and at least one light receiving unit 2 (light emitting / receiving unit 12) corresponding thereto, and the light emitting unit 1 and the light receiving unit 2 of the light emitting / receiving unit 12 It arrange | positions so that it may oppose on both sides of the pipe | tube 23 of twenty. [Selected figure] Figure 1