JPH0462429A - Method and device for setting pulse constant of fluidic flowmeter - Google Patents
Method and device for setting pulse constant of fluidic flowmeterInfo
- Publication number
- JPH0462429A JPH0462429A JP17237990A JP17237990A JPH0462429A JP H0462429 A JPH0462429 A JP H0462429A JP 17237990 A JP17237990 A JP 17237990A JP 17237990 A JP17237990 A JP 17237990A JP H0462429 A JPH0462429 A JP H0462429A
- Authority
- JP
- Japan
- Prior art keywords
- flow rate
- flowmeter
- pulse
- pulse constant
- fluidic flowmeter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims description 8
- 239000012530 fluid Substances 0.000 claims abstract description 30
- 230000007423 decrease Effects 0.000 claims abstract description 6
- 238000005259 measurement Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Measuring Volume Flow (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は、フルイディック流量計において、その流量演
算の基礎となるパルス定数を設定する方法とその装置に
関するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method and apparatus for setting a pulse constant, which is the basis of flow rate calculation, in a fluidic flow meter.
［従来の技術］
フルイディック流量計は、フルイディック素子内におい
て流体振動を発生させ、この流体振動周波数と夫々のフ
ルイディック流量計に設定されたパスル定数を基に流量
を演算するものである。通常、同一規格て造られたフル
イディック流量計の場合、パルス定数は同一のものとし
て流量演算することは可能であるか、都市ガスメータの
ように、器差が定められている流量計においては、この
ようにパルス定数を一定にして演算した場合、フルイデ
ィック素子の加工精度等の関係て器差が大きく出てしま
うこともある。[Prior Art] A fluidic flowmeter generates fluid vibration within a fluidic element, and calculates a flow rate based on the fluid vibration frequency and a pulse constant set for each fluidic flowmeter. Normally, in the case of fluidic flowmeters manufactured to the same standard, is it possible to calculate the flow rate by assuming that the pulse constant is the same?For flowmeters such as city gas meters that have a defined instrumental error, When performing calculations with a constant pulse constant in this manner, large instrumental errors may occur due to the processing accuracy of the fluidic element.
そこて、従来は第２図に示すように、基準流量発生器ｌ
から流出した流体を設定対象フルイディック流量計２内
に通過させる。その際、設定対象フルイディック流量計
２ては流体振動を発生するので、その周波数を周波数分
析計３で測定し、その時の通過流量Ｑ （ｃｃ／５ｅｃ
）を周波数ｆＨｚ（＝１／５ｅｅ）て除した値（パルス
定数ｃｃ／パルス）を求める。Therefore, conventionally, as shown in Fig. 2, a reference flow rate generator l
The fluid flowing out is passed into the fluidic flowmeter 2 to be set. At this time, since the fluidic flowmeter 2 to be set generates fluid vibration, its frequency is measured by the frequency analyzer 3, and the passing flow rate Q (cc/5ec
) divided by the frequency fHz (=1/5ee) (pulse constant cc/pulse) is calculated.
更に、基準流量発生器１から流出させる流量を変更し、
同様の操作を行う。これらを何度か繰り返し、ある流量
範囲における各流量に対するパルス定数を求める。さら
に、これらのパルス定数の平均値を求めてその値を設定
対象フルイディック流量計のパルス定数として設定する
という方法を採用している。図中５は流量設定器である
。Furthermore, the flow rate flowing out from the reference flow rate generator 1 is changed,
Perform the same operation. Repeat these steps several times to find the pulse constant for each flow rate within a certain flow rate range. Furthermore, a method is adopted in which the average value of these pulse constants is determined and that value is set as the pulse constant of the fluidic flowmeter to be set. 5 in the figure is a flow rate setting device.
［従来技術の課題］
このため、−台のパルス定数の設定には、多くの労力と
時間かかかるという問題かある。[Problems with the Prior Art] Therefore, there is a problem in that it takes a lot of effort and time to set a pulse constant on the order of -.
［課題を解決するための手段］
本発明は、斯る点に鑑みて提案されるもので、その構成
は次のとおりである。[Means for Solving the Problems] The present invention is proposed in view of the above points, and has the following configuration.
１、設定対象フルイディック流量計に対して流体の流量
が連続的に増加又は減少するように流体を流してこのと
き当該設定対象フルイディック流量計から発振される流
体振動の波の数を計測し、この値と、同様にして求めた
パルス定数既知のフルイディック流量計から発振される
流体振動の波の数の比の逆数を、既知のパルス定数に乗
じて得られた値を設定対象フルイディック流量計のパル
ス定数として設定する、フルイディック流量計における
パルス定数設定方法。1. Flow the fluid through the fluidic flowmeter to be set so that the fluid flow rate increases or decreases continuously, and measure the number of fluid vibration waves oscillated from the fluidic flowmeter to be set at this time. , and the value obtained by multiplying the known pulse constant by the reciprocal of the ratio of the number of fluid vibration waves oscillated from a fluidic flowmeter with a known pulse constant obtained in the same manner. How to set the pulse constant in a fluidic flowmeter, which is set as the pulse constant of the flowmeter.
２、流体の流量を連続的に増加又は減少させて流すこと
かてきる基準流量発生器と、
前記基準流量発生器に対して発生する流量を設定する流
量設定器と、
前記基準流量発生器から発生した流体の流量を流した際
に発生する設定対象フルイディック流量計の流体振動の
波の数を計測するパルスカウンタと、
前記パルスカウンタにより計測された波の数と、同様に
して求めたパルス定数既知のフルイディック流量計の波
の数の比の逆数を、既知のパルス定数に乗じて設定対象
フルイディック流量計のパルス定数を求める演算器と
から成るフルイディック流量計におけるパルス定数設定
装置。2. A reference flow rate generator that can continuously increase or decrease the flow rate of fluid; a flow rate setting device that sets the flow rate generated with respect to the reference flow generator; A pulse counter that measures the number of waves of fluid vibration of the fluidic flowmeter to be set that occurs when the generated fluid flow rate flows, and a pulse that is obtained in the same manner as the number of waves measured by the pulse counter. A pulse constant setting device for a fluidic flowmeter, comprising a calculator that calculates a pulse constant of a fluidic flowmeter to be set by multiplying a known pulse constant by the reciprocal of the ratio of the number of waves of a fluidic flowmeter with a known constant.
［作用］
基準流量発生器から設定対象フルイディック流量計にあ
る流量範囲において増大又は減少する流体か流されると
、設定対象フルイディック流量計から流体振動か出力さ
れる。この流体振動の波の数をパルスカウンタて計測し
、この計測値が演算器に入力される。[Operation] When a fluid that increases or decreases in a certain flow rate range is flowed from the reference flow rate generator to the fluidic flowmeter to be set, fluidic vibrations are output from the fluidic flowmeter to be set. The number of waves of this fluid vibration is measured by a pulse counter, and this measured value is input to a computing unit.
次に、パルス定数既知のフルイディック流量計に対して
同様に流体を流し、この流量計から発振される波の数を
パルスカウンタて計測し、この値も演算器に入力される
。Next, fluid is similarly caused to flow through a fluidic flowmeter with a known pulse constant, and the number of waves oscillated from this flowmeter is measured using a pulse counter, and this value is also input to the calculator.
演算器は、設定対象フルイディック流量計の値と、パル
ス定数既知のフルイディック流量計の波の数の比の逆数
を既知のパルス定数に乗じて得た値を求め、この値を設
定対象フルイディック流量計のパルス定数とする演算を
行う。The calculator multiplies the known pulse constant by the reciprocal of the ratio of the number of waves of the fluidic flowmeter whose pulse constant is known and the value of the fluidic flowmeter to be set, and calculates the value obtained by multiplying the known pulse constant. Perform calculations to determine the pulse constant of the Dick flow meter.
［実施例］
第１図に本発明の実施例を示す。符号１は基準流量発生
器にして、一定範囲の流量を小流量から大流量へ又は大
流量から小流量に変化させて発生することがてきる。[Example] FIG. 1 shows an example of the present invention. Reference numeral 1 designates a reference flow rate generator, which can generate a flow rate within a certain range by changing it from a small flow rate to a large flow rate or from a large flow rate to a small flow rate.
２は設定対象フルイディック流量計にして、前記基準流
量発生器ｌで発生した流量はこの設定対象フルイディッ
ク流量計２内を通過する。2 is a fluidic flowmeter to be set, and the flow rate generated by the reference flow rate generator 1 passes through this fluidic flowmeter 2 to be set.
４は設定対象フルイディック流量計２から出力される流
体振動の波を計測するパルスカウンタ、５は前記基準流
量発生器ｌて発生する流量を設定するための流量設定器
、６はパルスカウンタ４からの出力に基づいてパルス定
数の演算を行う演算器である。4 is a pulse counter that measures the wave of fluid vibration output from the fluidic flowmeter 2 to be set; 5 is a flow rate setting device for setting the flow rate generated by the reference flow rate generator; 6 is a pulse counter from pulse counter 4; This is an arithmetic unit that calculates a pulse constant based on the output of the .
次に、基準流量発生器１から流出する流体の流量が小流
量から大流量まで所要時間１００秒て変化した場合のパ
ルス定数演算例を説明する。Next, an example of pulse constant calculation will be described when the flow rate of the fluid flowing out from the reference flow rate generator 1 changes from a small flow rate to a large flow rate over a required time of 100 seconds.
■ 設定対象フルイディック流量計２から得られた流体
振動の波の数は４８４５
■ パルス定数か１０．０ｃｃ／パルスのフルイディッ
ク流量計から得られた流体振動の波の数は４７したがっ
て、設定対象フルイディック流量計２のパルス定数Ｐは
と求まる。■ The number of fluid vibration waves obtained from the fluidic flowmeter 2 to be set is 4845. ■ The number of fluid vibration waves obtained from the fluidic flowmeter with a pulse constant of 10.0 cc/pulse is 47. Therefore, the setting target is The pulse constant P of the fluidic flowmeter 2 is determined as follows.
なお、設定対象フルイディック流量計２とパルス定数既
知のフルイディック流量計の波の数をカウントする際、
付は替えるのてはなく、直列に接続して同時に測定を行
うことも可能てあり、このようにすると計測時間をさら
に短縮することか可能である。In addition, when counting the number of waves of the fluidic flowmeter 2 to be set and the fluidic flowmeter with a known pulse constant,
Instead of simply replacing the attachments, it is also possible to connect them in series and perform measurements at the same time, and in this way it is possible to further shorten the measurement time.
［本発明の効果コ
本発明は以上の如き方法にてパルス定数を設定するため
５次の如き効果を奏する。[Effects of the Present Invention] Since the present invention sets the pulse constant using the method described above, the following five-order effects are achieved.
ａ、従来のパルス定数設定作業の場合、パルス定数演算
まてに約３０分の作業時間を要したか、本発明方法によ
ると約４分、直列て同時測定を行うとこの半分て終る。a. In the case of conventional pulse constant setting work, it took about 30 minutes to calculate the pulse constant, but according to the method of the present invention, it takes about 4 minutes, and when simultaneous measurements are carried out in series, it takes about half this time.
ｂ、従来のパルス定数設定作業において、基準流量発生
器から流体を流出させる回数は１８回てあったか、本発
明方法によると２回でよく、又、直列の場合は１回て終
り、大幅な労力の削減か可能である。b. In the conventional pulse constant setting work, the number of times the fluid was flowed out from the reference flow rate generator was 18 times, but according to the method of the present invention, it only needs to be done twice, and in the case of series, it only needs to be done once, which requires a lot of labor. It is possible to reduce
第１図は本発明に係るパルス定数設定方法とその装置の
説明図、第２図は従来例の説明図である。
１ ・・・ 基準流量発生器
２ ・・・ 設定対象フルイディック流量計４ ・・・
パルスカウンタ
５ ・・・ 流量設定器
６ ・・・ 演算器
第１図FIG. 1 is an explanatory diagram of a pulse constant setting method and apparatus according to the present invention, and FIG. 2 is an explanatory diagram of a conventional example. 1... Reference flow generator 2... Fluidic flowmeter to be set 4...
Pulse counter 5 ... Flow rate setting device 6 ... Calculator Fig. 1
Claims (1)
が連続的に増加又は減少するように流体を流してこのと
き当該設定対象フルイディック流量計から発振される流
体振動の波の数を計測し、この値と、同様にして求めた
パルス定数既知のフルイディック流量計から発振される
流体振動の波の数の比の逆数を、既知のパルス定数に乗
じて得られた値を設定対象フルイディック流量計のパル
ス定数として設定する、フルイディック流量計における
パルス定数設定方法。 ２、流体の流量を連続的に増加又は減少させて流すこと
ができる基準流量発生器と、 前記基準流量発生器に対して発生する流量を設定する流
量設定器と、 前記基準流量発生器から発生した流体の流量を流した際
に発生する設定対象フルイディック流量計の流体振動の
波の数を計測するパルスカウンタと、 前記パルスカウンタにより計測された波の数と、同様に
して求めたパルス定数既知のフルイディック流量計の波
の数の比の逆数を、既知のパルス定数に乗じて設定対象
フルイディック流量計のパルス定数を求める演算器と、 から成るフルイディック流量計におけるパルス定数設定
装置。[Claims] 1. Fluid is caused to flow through the fluidic flowmeter to be set so that the flow rate of the fluid continuously increases or decreases, and at this time, the fluidic vibrations oscillated from the fluidic flowmeter to be set are The number of waves was measured, and the pulse constant was multiplied by the reciprocal of the ratio of this value to the number of waves of fluid vibration oscillated by a fluidic flowmeter with a known pulse constant, which was obtained in the same way. A pulse constant setting method for a fluidic flowmeter that sets the value as the pulse constant of the target fluidic flowmeter. 2. A reference flow rate generator that can continuously increase or decrease the flow rate of fluid, a flow rate setting device that sets the flow rate generated with respect to the reference flow generator, and a flow rate generated from the reference flow rate generator. A pulse counter that measures the number of waves of fluid vibration of the fluidic flowmeter to be set that occurs when the fluid flow rate is flowing; and the number of waves measured by the pulse counter and a pulse constant obtained in the same manner. A pulse constant setting device for a fluidic flowmeter, comprising: an arithmetic unit that calculates a pulse constant of a fluidic flowmeter to be set by multiplying a known pulse constant by the reciprocal of the ratio of the number of waves of a known fluidic flowmeter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17237990A JPH0462429A (en) | 1990-06-29 | 1990-06-29 | Method and device for setting pulse constant of fluidic flowmeter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17237990A JPH0462429A (en) | 1990-06-29 | 1990-06-29 | Method and device for setting pulse constant of fluidic flowmeter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0462429A true JPH0462429A (en) | 1992-02-27 |
Family
ID=15940820
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17237990A Pending JPH0462429A (en) | 1990-06-29 | 1990-06-29 | Method and device for setting pulse constant of fluidic flowmeter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0462429A (en) |
-
1990
- 1990-06-29 JP JP17237990A patent/JPH0462429A/en active Pending
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