JP5097663B2 - Flow meter converter - Google Patents

Description

  The present invention relates to a flowmeter transducer that is assembled to a flowmeter element for measuring a fluid to be measured.

A flow meter that is connected to a flow tube, detects a physical quantity that is output according to the flow velocity, converts it into an electrical quantity, performs calculations based on this, and outputs and displays the instantaneous flow rate and integrated flow rate. Widely known. The flow meter includes a flow meter element (flow meter main body) that measures a fluid to be measured, and a flow meter converter (converter) that is assembled to the flow meter element and performs the above-described calculation or the like ( For example, see Patent Documents 1 and 2 below).
JP-A-6-102070 JP-A-10-303722

  After installation and maintenance, the flowmeter needs to perform “operational soundness check” and “inspection of nonconformity when nonconformity occurs”. For this reason, a plurality of check terminals for maintenance are provided inside the flowmeter converter. The check terminal is a small terminal to which a probe such as a tester or an oscilloscope can be connected. The check terminal is usually provided at the end of the board (circuit board), and a display indicating the function of the check terminal is written next to the check terminal on the board.

  The place where the flow meter is installed depends on the type of fluid to be measured, but it is usually not installed in an environment where people are indoors, especially in the case of high-temperature fluids such as steam or hazardous fluids. Often installed in high places or underground. For this reason, it is necessary to perform confirmation / inspection work and maintenance work in a relatively dark place.

  On the other hand, there are many cases where it is installed outdoors, but it is rare that dedicated lighting for illuminating the flowmeter is installed, and it is necessary to perform maintenance work in the dark after sunset.

  Workers need to carry out confirmation / inspection work and maintenance work while using lighting means such as a flashlight.Therefore, there is a problem that workability is deteriorated depending on the installation location of the flow meter. Yes.

  The present invention has been made in view of the above circumstances, and an object thereof is to provide a flowmeter converter capable of improving workability during confirmation / inspection work and maintenance work.

  In order to solve the above-mentioned problems, the flowmeter converter of the present invention according to claim 1 is assembled to a flowmeter element for measuring a fluid to be measured with one or a plurality of substrates provided in the case. In the flowmeter converter having a plurality of check terminals provided on the substrate, terminal illumination means for illuminating the check terminals is provided in the vicinity of the check terminals, or integrated with the check terminals. The terminal illumination means is provided.

  According to the present invention having such a feature, when the check terminal is illuminated, for example, even when performing maintenance work in a relatively dark place or maintenance work in a dark place after sunset, the check terminal is immediately As a result, it becomes possible to perform the work satisfactorily.

  According to a second aspect of the present invention, there is provided a flowmeter converter according to the first aspect, wherein the color emitted by the illumination means is changed in accordance with the function of the check terminal.

  According to the present invention having such a feature, the terminal illumination means is, for example, an LED, the LED that emits red light illuminates the check terminal that observes the reference voltage and flow signal of the electronic circuit, and the LED that emits blue light Illuminate a check terminal for inputting a pseudo signal. Since it becomes easy to identify the check terminal for each function, it is possible to perform the work satisfactorily.

A flow meter converter according to a third aspect of the present invention is the flow meter converter according to the first aspect, characterized in that the terminal illumination means emits light according to an abnormal state of the flow meter.

  According to the present invention having such a feature, for example, when a situation where a flow rate signal is not normally input to the flow rate calculation CPU is detected, only the check terminal for observing the flow rate signal is detected by the terminal illumination means. Illuminated. Since the operator can immediately know where to check, the work can be performed satisfactorily.

  A flow meter converter according to a fourth aspect of the present invention is the flow meter converter according to any one of the first to third aspects, wherein the terminal illumination unit emits light when the case lid is removed. Yes.

  According to the present invention having such a feature, it is possible to illuminate the check terminal while minimizing power consumption.

  According to the present invention, since the check terminal is illuminated by the terminal illumination means, confirmation / inspection work and maintenance work can be performed without being influenced by the work environment. Therefore, the workability is improved, and as a result, the workability can be improved as compared with the prior art.

  Hereinafter, description will be given with reference to the drawings. FIG. 1 is an exploded perspective view showing a first embodiment of a flowmeter converter of the present invention. 2 and 3 are diagrams schematically showing the main part of FIG.

  In FIG. 1, reference numeral 1 denotes a flowmeter converter of the present invention assembled to a flowmeter element (not shown) for measuring a fluid to be measured. A flow meter element (not shown) and the flow meter converter 1 are provided as members constituting a flow meter (not shown). As the flow meter element (not shown), a known one is used here (the form of the flow meter element is not particularly limited). The flow meter is configured so that an instantaneous flow rate or an integrated flow rate can be obtained by calculation and displayed.

  The flowmeter converter 1 includes a converter case 2. The converter case 2 has a case main body 3 and a case lid 4 that covers the front opening of the case main body 3. A known converter case 2 is used. Inside the converter case 2 are accommodated a plurality of substrates 5 on which desired electronic components are mounted. Specifically (assuming an example), a first substrate 6, a second substrate 7, a third substrate 8, and a fourth substrate 9 are accommodated sequentially from the front opening side. ing. Each board | substrate 5 (6-9) is each arrange | positioned so that it may overlap with a predetermined space | interval while being formed in disk shape, respectively. Note that the basic functions of the respective substrates 5 (6 to 9) are not different from the conventional ones.

  The first substrate 6 and the second substrate 7 are arranged so that the back surface of the first substrate 6 and the surface of the second substrate 7 face each other. The first substrate 6 and the second substrate 7 are maintained at a predetermined distance by the four columns 10.

  The second substrate 7 and the third substrate 8 are arranged so that the back surface of the second substrate 7 and the front surface of the third substrate 8 face each other. The second substrate 7 and the third substrate 8 are maintained at a predetermined distance by the four columns 11.

  The third substrate 8 and the fourth substrate 9 are arranged so that the back surface of the third substrate 8 and the front surface of the fourth substrate 9 face each other. The third substrate 8 and the fourth substrate 9 are maintained at a predetermined interval by the four columns 12. Each board | substrate 5 (6-9) is fixed by the four fixing screws 13 which penetrate each support | pillar 10-12.

  Each of the second substrate 7 and the third substrate 8 is provided with a plurality of check terminals 14. The check terminal 14 is provided for performing “operational soundness confirmation” and “inspection of nonconformity when nonconformity occurs” after the flow meter is installed or during maintenance. In this embodiment, the check terminal 14 is formed in a pin shape, but this is not the only case. For example, it is not particularly limited as long as it can be connected to a probe such as a digital multimeter (tester) or an oscilloscope.

  On the surfaces of the second substrate 7 and the third substrate 8, a display indicating the function of the check terminal is written in the vicinity of the check terminal 14 although not particularly shown.

  1 to 3, an LED 15 (terminal illumination means) for illuminating the check terminal 14 is provided in the vicinity of the check terminal 14. The LED 15 is provided for the purpose of enabling a worker to perform confirmation / investigation work and maintenance work without being affected by the work environment when working. By providing the LED 15, the check terminal 14 is illuminated so that the position of the check terminal 14 can be easily understood. In this embodiment, the LEDs 15 are provided so as to correspond one-to-one with the check terminals 14.

  The check terminal 14 provided on the second substrate 7 is illuminated from the front end side of the terminal by the LED 15 provided on the back surface of the first substrate 6. On the other hand, the check terminal 14 provided on the third substrate 8 is illuminated from the lateral direction of the terminal by the LED 15 provided on the surface of the third substrate 8, that is, in the immediate vicinity of the check terminal 14. The LED 15 may be allowed to emit light at all times, or may be made to emit light when the case lid 4 is detached from the case body 3 (a circuit configuration in which the switch is turned on when the case lid 4 is removed). Leave).

  In the above configuration and structure, since the check terminal 14 is illuminated by the LED 15, confirmation / inspection work and maintenance work can be performed without using, for example, a flashlight. Needless to say, if it is not necessary to have a flashlight and the position of the check terminal 14 can be easily understood, the workability is improved.

  In addition to the above flashlight, if you consider working with the lamp fixed to the helmet, in this case you will not be able to move your head much, but you will feel inconvenience. Of course, this is not the case with the invention.

  Next, another embodiment that can be applied to the flowmeter converter 1 will be described with reference to FIGS. 4 to 7. 4 is a schematic diagram showing the second embodiment, FIG. 5 is a schematic diagram showing the third embodiment, FIG. 6 is a schematic diagram showing the fourth embodiment, and FIG. 7 is a fifth embodiment. It is a schematic diagram shown.

  In FIG. 4, a check terminal 14 is provided on the substrate 5. Further, an LED 15 is provided next to the check terminal 14. The LED 15 on the right side in the drawing emits red light, for example, and illuminates the check terminal 14 for observing the reference voltage and flow rate signal of the electronic circuit (assumed as an example). On the other hand, the LED 15 on the left side in the drawing emits blue light, for example, and illuminates the check terminal 14 for inputting a pseudo signal (assumed as an example). In the second embodiment, since it becomes easy to identify the check terminal 14 for each function, there is an effect that the work can be performed satisfactorily.

  In FIG. 5, the check terminal 14 is an integrated LED 15. The end portion 14a of the check terminal 14 surrounded by a broken-line circle and the two leads 15a of the LED 15 are inserted into a substrate (not shown) and soldered to a predetermined circuit. In the third embodiment, not only the position of the check terminal 14 is easily understood, but also the mounting space of the LED 15 can be considered.

  In FIG. 6, the check terminal 14 is formed by integrating a transparent light guide member 16. In the vicinity of the light guide member 16, an LED 15 is provided so as to emit light with respect to the light guide member 16. In the fourth embodiment, there is an effect that the check terminal 14 itself can be seen as shining. That is, there is an effect that the position of the check terminal 14 can be easily understood even with the arrangement as described above.

  In FIG. 7, a check terminal 14 is provided on the substrate 5. Further, an LED 15 is provided next to the check terminal 14. The LED 15 is set to emit light according to an abnormal state. For example, if only the right LED 15 in the figure emits light, the right check terminal 14 illuminated by this indicates that it should be checked. In the fifth embodiment, only the check terminal 14 for observing the flow rate signal is illuminated by the LED 15 when, for example, a situation where the flow rate signal is not normally input to the flow rate calculation CPU is detected. Therefore, since the operator can immediately know where to check, there is an effect that the work can be performed satisfactorily.

  As described above with reference to FIGS. 1 to 7, according to the present invention, the terminal illumination means such as the LED 15 (small lamps and the like in addition to the LED can be mentioned. Since the check terminal 14 is illuminated by the light emission, the confirmation / inspection work and the maintenance work can be performed regardless of the work environment. Therefore, the workability is improved, and as a result, the workability can be improved as compared with the prior art.

  It goes without saying that the present invention can be variously modified without departing from the spirit of the present invention.

It is a disassembled perspective view which shows 1st embodiment of the flowmeter converter of this invention. It is the figure which showed the 1st principal part of FIG. 1 typically. It is the figure which showed the 2nd principal part of FIG. 1 typically. It is a schematic diagram showing a second embodiment. It is a schematic diagram showing a third embodiment. It is a schematic diagram which shows 4th embodiment. It is a schematic diagram showing a fifth embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Flowmeter converter 2 Converter case 3 Case main body 4 Case cover part 5 Board | substrate 6 1st board | substrate (board | substrate)
7 Second substrate (substrate)
8 Third substrate (substrate)
9 Fourth substrate (substrate)
10-12 support 13 fixing screw 14 check terminal 14a end 15 LED (terminal illumination means)
15a Lead 16 Light guide member

Claims (4)

In a flow meter converter having a structure in which a plurality of check terminals are provided on the substrate, assembled to a flow meter element for measuring a fluid to be measured, with one or a plurality of substrates provided inside the case,
A flow meter converter, wherein a terminal illumination unit for illuminating the check terminal is provided in the vicinity of the check terminal, or the terminal illumination unit is provided so as to be integrated with the check terminal. The flowmeter converter according to claim 1,
The flowmeter converter characterized by changing the color of light emitted from the illumination means according to the function of the check terminal. The flowmeter converter according to claim 1,
The flow meter converter, wherein the terminal illumination unit emits light according to an abnormal state of the flow meter. In the flowmeter converter according to any one of claims 1 to 3,
The flowmeter converter, wherein the terminal illumination means emits light when the case lid is removed.

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