JP7162301B2 - PRESSURE GAUGE INSPECTION METHOD AND PRESSURE GAUGE INSPECTION DEVICE - Google Patents

PRESSURE GAUGE INSPECTION METHOD AND PRESSURE GAUGE INSPECTION DEVICE Download PDF

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JP7162301B2
JP7162301B2 JP2018215440A JP2018215440A JP7162301B2 JP 7162301 B2 JP7162301 B2 JP 7162301B2 JP 2018215440 A JP2018215440 A JP 2018215440A JP 2018215440 A JP2018215440 A JP 2018215440A JP 7162301 B2 JP7162301 B2 JP 7162301B2
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pressure
pressure gauge
temperature
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reference device
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JP2020085485A (en
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健 安部
慎一郎 有馬
康裕 山西
優 佐々木
泰秀 土田
基彦 上原
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AIM TECH CO.,LTD.
Tokyo Gas Engineering Solutions Corp
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Tokyo Gas Engineering Solutions Corp
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本発明は、圧力計を検査する検査方法および検査装置に関するものである。 The present invention relates to an inspection method and inspection apparatus for inspecting pressure gauges.

ガス配管等の気密漏洩試験を行う圧力計などの計測精度の検査・校正は、例えば、検査対象となる圧力計と、基準器となる圧力計とを恒温槽内に設置して一定の温度に保った状態で、両者の計測圧力を比較することによって行われている（例えば、特許文献１参照。）。 Inspection and calibration of the measurement accuracy of pressure gauges for airtight leak testing of gas pipes, for example, involves placing the pressure gauge to be inspected and the pressure gauge that serves as a reference device in a constant temperature bath and keeping them at a constant temperature. This is done by comparing the measured pressures of both while maintaining the pressure (see, for example, Patent Document 1).

特開２０１５－２２４９９７号公報JP 2015-224997 A

しかしながら、上記のような検査方法では、恒温槽を必要とするため、圧力計のユーザなどが行うことは容易でない。そこで、通常、第三者の検査機関などに検査を依頼することが行われている。このため、検査に要する時間や費用が掛かるものとなっていた。 However, since the inspection method as described above requires a constant temperature bath, it is not easy for the user of the pressure gauge. Therefore, usually, inspection is requested to a third-party inspection agency or the like. For this reason, the time and cost required for the inspection have been required.

本発明は、上記の点に鑑み、圧力計のユーザなどでも、圧力計の検査を容易に行えるようにすることを目的としている。 SUMMARY OF THE INVENTION In view of the above, it is an object of the present invention to enable even a user of a pressure gauge to easily inspect the pressure gauge.

上記の目的を達成するため、本発明は、
検査対象の圧力計が所定の基準器と同じ圧力を計測するかどうかを検査する圧力計の検査方法であって、
上記圧力計と上記基準器とを連通させるように接続する接続工程と、
上記連通の内部空間に、大気圧または所定の圧力を印加して封止する圧力印加工程と、
上記圧力計および上記基準器によって計測される圧力の差が所定の許容範囲内であることを確認する計測圧力確認工程と、
上記圧力計測より前の時点から後の時点までの間の期間内に含まれる所定の温度確認期間における上記圧力計および基準器の少なくとも一方の温度、またはこれらの周囲の雰囲気の温度の変動が所定の許容範囲内であることを確認する温度確認工程と、
を有することを特徴とする。 In order to achieve the above objects, the present invention
A pressure gauge inspection method for inspecting whether a pressure gauge to be inspected measures the same pressure as a predetermined reference device,
a connecting step of connecting the pressure gauge and the reference device so as to communicate with each other;
a pressure applying step of applying atmospheric pressure or a predetermined pressure to the communicating internal space to seal it;
a measured pressure confirmation step of confirming that the pressure difference measured by the pressure gauge and the reference device is within a predetermined allowable range;
The temperature of at least one of the pressure gauge and the reference device, or the temperature of the surrounding atmosphere during a predetermined temperature confirmation period included in the period from the time before the pressure measurement to the time after the pressure measurement. A temperature confirmation step to confirm that it is within the allowable range of
characterized by having

また、
検査対象の圧力計が所定の基準器と同じ圧力を計測するかどうかを検査する圧力計の検査装置であって、
上記圧力計と上記基準器とを連通させるように接続し、上記連通の内部空間に、大気圧または所定の圧力を印加して封止した状態で、
上記圧力計および基準器によって計測される圧力に応じた圧力信号、ならびに上記圧力計および基準器の温度、またはこれらの周囲の雰囲気の温度に応じた温度信号が入力される管理装置を有し、
上記管理装置は、
上記圧力計および上記基準器によって計測される圧力の差が所定の許容範囲内であることを確認するとともに、
上記圧力計測より前の時点から後の時点までの間の期間内に含まれる所定の温度確認期間における上記圧力計および上記基準器の少なくとも一方の温度、またはこれらの周囲の雰囲気の温度の変動が所定の許容範囲内であることを確認することを特徴とする。 again,
A pressure gauge inspection device for inspecting whether a pressure gauge to be inspected measures the same pressure as a predetermined reference device,
In a state in which the pressure gauge and the reference device are connected so as to communicate with each other, and the internal space of the communication is sealed by applying atmospheric pressure or a predetermined pressure,
a management device to which a pressure signal corresponding to the pressure measured by the pressure gauge and the reference device and a temperature signal corresponding to the temperature of the pressure gauge and the reference device or the temperature of the atmosphere surrounding them are input;
The above management device
confirming that the pressure difference measured by the pressure gauge and the reference device is within a predetermined allowable range;
A change in the temperature of at least one of the pressure gauge and the reference device, or the temperature of the surrounding atmosphere during a predetermined temperature confirmation period included in the period from the time before the pressure measurement to the time after the pressure measurement It is characterized by confirming that it is within a predetermined allowable range.

これらにより、結果的に雰囲気温度等の変化が所定の許容範囲内にあることが確認できれば、検査結果は適正と判定することができるので、恒温槽を設けなくても、圧力計の検査を行うことが容易にできる。 As a result, if it can be confirmed that the change in the ambient temperature, etc., is within a predetermined allowable range, the inspection result can be determined to be appropriate, so the pressure gauge can be inspected without providing a constant temperature bath can be done easily.

本発明によれば、圧力計のユーザなどでも、圧力計の検査を容易に行えるようになる。 According to the present invention, even the user of the pressure gauge can easily inspect the pressure gauge.

実施形態１の圧力計および基準器の構成を示すブロック図である。2 is a block diagram showing the configuration of the pressure gauge and reference device of Embodiment 1. FIG. 実施形態２の圧力計および基準器の構成を示すブロック図である。FIG. 10 is a block diagram showing configurations of a pressure gauge and a reference device according to Embodiment 2; 実施形態３の圧力計および基準器の構成を示すブロック図である。FIG. 11 is a block diagram showing the configuration of a pressure gauge and a reference device according to Embodiment 3; 実施形態４の圧力計および基準器の構成を示すブロック図である。FIG. 11 is a block diagram showing the configuration of a pressure gauge and a reference device according to Embodiment 4;

以下、本発明の実施形態を図面に基づいて詳細に説明する。 BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described in detail based on the drawings.

（実施形態１）
ユーザ等によって、図１に示すような検査対象の圧力計１００の検査が基準器２００を用いて行われる例を説明する。上記圧力計１００は、例えばダイヤフラム式の圧力センサ１０１と、圧力計１００全体の動作を制御する制御部１０２と、計測結果等を表示する表示部１０３とを備えている。また、基準器２００は、その計測精度がメーカ等の検査によって確認されていることを除き、圧力計１００と同様に、圧力センサ２０１、制御部２０２、および表示部２０３を備えて構成されている。 (Embodiment 1)
An example in which a user or the like inspects a pressure gauge 100 to be inspected as shown in FIG. 1 using a reference device 200 will be described. The pressure gauge 100 includes, for example, a diaphragm-type pressure sensor 101, a control section 102 that controls the operation of the entire pressure gauge 100, and a display section 103 that displays measurement results and the like. Further, the reference device 200 includes a pressure sensor 201, a control section 202, and a display section 203 in the same manner as the pressure gauge 100, except that its measurement accuracy is confirmed by an inspection by the manufacturer or the like. .

上記圧力計１００の検査は、次のようにして行われる。まず、圧力計１００と基準器２００とを、配管３０１を介して連通するように接続する（接続工程）。なお、配管３０１を介して接続するのに限らず、密閉可能な容器等を介して接続したり、直接接続したりするなど、連通の内部空間を介して接続されればよい。上記配管３０１は、バルブ３０２を介して圧力源３０３に接続されるとともに、バルブ３０４を介して大気に開放され得るようになっている。また、圧力計１００および基準器２００の近傍に、温度計１５１を配置する。なお、温度計１５１は、圧力計１００および基準器２００の内部や近傍にそれぞれ設けられたりしてもよい。 Inspection of the pressure gauge 100 is performed as follows. First, the pressure gauge 100 and the reference device 200 are connected through the pipe 301 so as to communicate with each other (connection step). It should be noted that the connection is not limited to being connected via the pipe 301, and may be connected via a communicating internal space, such as connecting via a sealable container or the like, or connecting directly. The pipe 301 is connected to a pressure source 303 via a valve 302 and can be opened to the atmosphere via a valve 304 . A thermometer 151 is arranged near the pressure gauge 100 and the reference device 200 . Note that the thermometer 151 may be provided inside or near the pressure gauge 100 and the reference device 200, respectively.

次に、バルブ３０２・３０４の一方を閉じ、他方を開いて、配管３０１内を所定の圧力、または大気圧にした後、両方のバルブ３０２・３０４を閉じ、必要に応じて断熱膨張や圧縮に伴う温度変化が安定するまで放置する（圧力印加工程）。その後、圧力計１００および基準器２００による圧力の計測を行う（計測圧力確認工程）。また、上記圧力計測の前、後、または前後に亘る所定の温度確認期間の前後において、温度計１５１により、圧力計１００および基準器２００の温度、またはこれらの周囲の雰囲気の温度を計測する（温度確認工程）。 Next, one of the valves 302 and 304 is closed and the other is opened to bring the inside of the pipe 301 to a predetermined pressure or atmospheric pressure, then both valves 302 and 304 are closed to allow adiabatic expansion or compression as necessary. It is left until the accompanying temperature change is stabilized (pressure applying step). After that, the pressure is measured by the pressure gauge 100 and the reference device 200 (measured pressure confirmation step). In addition, the temperature of the pressure gauge 100 and the reference device 200 or the temperature of the surrounding atmosphere is measured by the thermometer 151 before, after, or before and after a predetermined temperature confirmation period before and after the pressure measurement ( temperature confirmation process).

ここで、上記温度や圧力の計測、確認は、その場で行われるのに限らず、カメラや記録装置によって計測画像（写真や動画）の撮影や、計測信号の記録等がなされて、後に、これらに基づいて確認されるようにしたりしてもよい。また、例えば圧力計の計測画像が撮影されるタイミングで、基準器の計測信号が取得されて記録されるようにしてもよい。 Here, the measurement and confirmation of the temperature and pressure are not limited to being performed on the spot, but the measurement images (photographs and videos) are taken with a camera or recording device, the measurement signals are recorded, etc., and later, You may make it confirm based on these. Further, for example, the measurement signal of the reference device may be acquired and recorded at the timing when the measurement image of the pressure gauge is captured.

上記計測の結果によって、上記温度確認期間の前後における計測温度の差が所定の許容範囲にあって、かつ、圧力計１００と基準器２００との計測圧力の差が所定の許容範囲内にある場合に、圧力計１００の計測精度は適正と判定する。すなわち、恒温槽などを用いなくても、気流や対流、放射熱などの影響が少ない環境を整えることは必ずしも困難とは限らない。そこで、そのような環境に圧力計１００および基準器２００を置いて検査を行うことによって、結果的に雰囲気温度等の変化が所定の許容範囲内にあることが確認できれば、検査結果は適正と判定することができる。それゆえ、恒温槽を設けることや検査機関などに検査を依頼することなく、圧力計の検査を行うことが容易にできる。 When the difference in the measured temperature before and after the temperature confirmation period is within a predetermined allowable range, and the difference in the measured pressure between the pressure gauge 100 and the reference device 200 is within a predetermined allowable range, according to the result of the measurement. Second, it is determined that the measurement accuracy of the pressure gauge 100 is appropriate. That is, it is not always difficult to prepare an environment that is less affected by air currents, convection, radiant heat, etc., without using a constant temperature bath or the like. Therefore, by placing the pressure gauge 100 and the reference device 200 in such an environment and conducting the inspection, if it can be confirmed that the change in the ambient temperature, etc., is within a predetermined allowable range, the inspection result is determined to be appropriate. can do. Therefore, the pressure gauge can be easily inspected without providing a constant temperature bath or requesting inspection from an inspection agency.

なお、上記のような温度計測のタイミングに関しては、圧力計測に影響するような温度変動がないことを確認できれば、圧力計測のタイミングと温度確認期間との間に多少時間差があったりしてもよい。すなわち、一般的には、圧力計測よりも十分に前のタイミングから、圧力計測が行われるまでの間に温度変動が所定の範囲内であることを確認できれば直接的な確認をしやすい点で好ましいが、通常は、特に温度変動の要因がなければ、例えば圧力計測に先立つ所定期間や、圧力計測後の所定期間などに温度変動が所定の範囲内であることを確認できれば、圧力計測が適切であることを推定できると考えられる。ここで、温度変動の確認をするめには、上記のように温度確認期間の前後の温度差を求めるのに限らず、温度確認期間中の最高温度と最低温度との差や温度の変化率などを求めたりしてもよい。 Regarding the timing of temperature measurement as described above, if it can be confirmed that there is no temperature change that affects pressure measurement, there may be a slight time difference between the timing of pressure measurement and the temperature confirmation period. . That is, in general, if it is possible to confirm that the temperature fluctuation is within a predetermined range from the timing sufficiently before the pressure measurement until the pressure measurement is performed, it is preferable in terms of facilitating direct confirmation. Normally, however, pressure measurement is appropriate if it is possible to confirm that the temperature fluctuation is within a predetermined range for a predetermined period of time prior to pressure measurement or for a predetermined period after pressure measurement, unless there is a particular cause of temperature fluctuation. It can be assumed that there is Here, in order to confirm the temperature fluctuation, it is not limited to obtaining the temperature difference before and after the temperature confirmation period as described above. You may ask for

また、圧力計と基準器との計測圧力の比較は、瞬間の圧力に限らず、所定期間内における圧力の平均値や最高、最低となどの代表値などによって行うなどしてもよい。 Moreover, the comparison of the pressure measured by the pressure gauge and the reference device is not limited to the instantaneous pressure, but may be performed using the average value, maximum, minimum, or other representative value of the pressure within a predetermined period.

（実施形態２）
上記実施形態１と同様の検査が自動的に行われる例を説明する。 (Embodiment 2)
An example in which an inspection similar to that of the first embodiment is automatically performed will be described.

本実施形態２の圧力計１００および基準器２００は、図２に示すように、実施形態１の構成に加えて、温度センサ１０４・２０４、および通信部１０５・２０５を有している。温度センサ１０４・２０４は、圧力計１００および基準器２００の内部や近傍の雰囲気の温度を検出するようになっている。通信部１０５・２０５は、別途設けられた管理装置４００との間で通信を行うようになっている。 As shown in FIG. 2, the pressure gauge 100 and the reference device 200 of the second embodiment have temperature sensors 104 and 204 and communication units 105 and 205 in addition to the configuration of the first embodiment. The temperature sensors 104 and 204 detect the temperature of the atmosphere inside and near the pressure gauge 100 and the reference device 200 . The communication units 105 and 205 communicate with a management device 400 provided separately.

上記管理装置４００は、圧力センサ１０１・２０１や温度センサ１０４・２０４で検出された圧力や温度に応じた信号を受信して、実施形態１と同様に圧力計１００の検査を行うようになっている。すなわち、温度確認期間の前後における計測温度の差が所定の許容範囲にあって、かつ、圧力計１００と基準器２００との計測圧力の差が所定の許容範囲内にある場合に、圧力計１００の計測精度は適正と判定するようになっている。なお、上記のように圧力や温度に応じた信号を受信するのに限らず、ユーザの操作などによってこれらの信号が入力されるようにしてもよい。 The management device 400 receives signals corresponding to the pressure and temperature detected by the pressure sensors 101 and 201 and the temperature sensors 104 and 204, and inspects the pressure gauge 100 in the same manner as in the first embodiment. there is That is, when the difference in the measured temperature before and after the temperature confirmation period is within a predetermined allowable range and the difference in the measured pressure between the pressure gauge 100 and the reference device 200 is within a predetermined allowable range, the pressure gauge 100 is determined to be appropriate. It should be noted that these signals may be input by a user's operation or the like instead of receiving signals corresponding to pressure or temperature as described above.

また、管理装置４００は、さらに、計測精度が適正でないと判定した場合、すなわち、上記圧力の差が上記所定の許容範囲内にないか、または上記温度の差が上記所定の許容範囲内にない場合には、圧力計１００に計測動作を停止させたり、検査の結果、計測精度が適正でないと判定されたことを表示部１０３への表示やアラーム音などによって報知させ得るようになっている。これによって、不適切な計測が行われることを容易に防止することなどができる。 Further, when the management device 400 determines that the measurement accuracy is not appropriate, that is, the pressure difference is not within the predetermined allowable range, or the temperature difference is not within the predetermined allowable range. In such a case, the pressure gauge 100 can be made to stop the measurement operation, or can be notified by displaying on the display unit 103 or by an alarm sound that the measurement accuracy is determined to be inappropriate as a result of the inspection. This makes it possible to easily prevent inappropriate measurements.

なお、管理装置４００は、上記のように圧力計１００や基準器２００とは別個に設けられるのに限らず、圧力計１００または基準器２００の内部に設けられたり、管理装置４００の機能が圧力計１００および基準器２００に分散して設けられたりしてもよい。また、管理装置４００によって、バルブ３０２・３０４や圧力源３０３の動作も制御できるようにしてもよい。 Note that the management device 400 is not limited to being provided separately from the pressure gauge 100 and the reference device 200 as described above. It may be provided separately in the total 100 and the reference device 200 . Further, the operation of the valves 302 and 304 and the pressure source 303 may also be controlled by the management device 400 .

（実施形態３）
圧力計１００と基準器２００とは、上記のように１台ずつが組にして用いられるのに限らず、図３に示すように、１台の基準器２００を用いて複数台の圧力計１００の検査を行い得るようにしてもよい。すなわち、複数台の圧力計１００が配管３０１に接続されるとともに、例えば、製造番号などの機器ＩＤ（識別情報）等によって管理装置４００が各圧力計１００を識別可能にすることによって、複数台の圧力計１００の検査を同時に行うことが容易にできる。これによって、検査の手間や時間を低減することが容易にできる。 (Embodiment 3)
The pressure gauge 100 and the reference device 200 are not limited to being used in pairs as described above, and as shown in FIG. can be inspected. That is, a plurality of pressure gauges 100 are connected to the pipe 301, and the management device 400 can identify each pressure gauge 100 by, for example, a device ID (identification information) such as a manufacturing number. Inspection of the pressure gauge 100 can be easily performed at the same time. As a result, it is possible to easily reduce the labor and time required for inspection.

（実施形態４）
管理装置４００は、図４に示すように、インターネット５００等を介して、例えばメーカサーバ６００と通信可能に構成し、上記のような検査による判定結果が製造番号などとともにメーカサーバ６００に送られるようにしてもよい。これによって、計測精度が適正と判定された圧力計１００に対する校正証書の発行や、計測精度が適正でないと判定された圧力計１００に対する修理対応を自動的に行わせたりすることができる。また、メーカ等において、各圧力計１００の状態等を一元的に把握、管理したりすることなども容易にできる。 (Embodiment 4)
As shown in FIG. 4, the management device 400 is configured to be able to communicate with, for example, the manufacturer server 600 via the Internet 500 or the like, so that the determination result of the inspection as described above is sent to the manufacturer server 600 together with the serial number. can be As a result, it is possible to automatically issue a calibration certificate for the pressure gauge 100 whose measurement accuracy is determined to be adequate, and to automatically repair the pressure gauge 100 whose measurement accuracy is determined to be inappropriate. In addition, the manufacturer or the like can easily grasp and manage the state of each pressure gauge 100 in an integrated manner.

なお、上記のように検査による判定結果がメーカサーバ６００等に送られるのに限らず、圧力センサ１０１・２０１や温度センサ１０４・２０４による計測結果自体がメーカサーバ６００に送られるようにして、上記管理装置４００と同様の処理がメーカサーバ６００によって行われるようにしてもよい。その場合、通信部１０５・２０５が直接、インターネット５００等に接続できるようにすれば、管理装置４００を省略することもできる。 It should be noted that not only the result of determination by the inspection is sent to the manufacturer server 600 or the like as described above, but also the measurement results themselves of the pressure sensors 101 and 201 and the temperature sensors 104 and 204 are sent to the manufacturer server 600. The maker server 600 may perform the same processing as the management device 400 . In that case, if the communication units 105 and 205 can be directly connected to the Internet 500 or the like, the management device 400 can be omitted.

また、圧力センサ１０１・２０１等の計測結果や管理装置４００による判定結果などが、一旦、ユーザのサーバ等に保存され、必要に応じてメーカサーバ６００に送られるようにしたりしてもよい。 Also, the measurement results of the pressure sensors 101 and 201 and the determination results of the management device 400 may be temporarily stored in a user's server or the like, and sent to the manufacturer server 600 as necessary.

（変形例）
なお、上記のように温度計１５１や温度センサ１０４・２０４を用いるのに変えて、圧力センサ１０１・２０１による圧力の計測によって、実質的（間接的）に温度が計測されるようにしてもよい。すなわち、配管３０１にリークがなければ、温度変化があれば圧力変化が生じることになるので、圧力の計測によって温度変動の有無等を確認することができる。具体的には、例えば、上記検査のための圧力計測前後の少なくとも一方の所定時間内に、配管３０１内の圧力を所定の圧力、または大気圧にして封止した状態で、計測される圧力の変動が所定の許容範囲内であれば、検査のための圧力計測の際の温度変動も所定以下であることが推定される。それゆえ、上記のように圧力の計測によって温度変動の有無等を確認することができることになる。なお、上記圧力の計測による温度変動の有無等の確認は、別途設けられた圧力計や基準器を用いて行うようにしてもよい。この場合には、検査のための圧力の計測中、または計測中にかかる期間にも、温度変動の確認のための計測を行うことが容易にできる。また、配管３０１内の圧力等が大気圧にされる場合には、多少のリークがあったとしても、配管３０１内外への空気の移動はほとんど生じないので、やはり、温度変動の有無等を確認することができる。 (Modification)
Instead of using the thermometer 151 and the temperature sensors 104 and 204 as described above, the temperature may be substantially (indirectly) measured by pressure measurement by the pressure sensors 101 and 201. . That is, if there is no leak in the pipe 301, a change in temperature will cause a change in pressure, so it is possible to check whether there is a change in temperature or the like by measuring the pressure. Specifically, for example, within at least one of the predetermined time before and after the pressure measurement for the inspection, the pressure in the pipe 301 is set to a predetermined pressure or atmospheric pressure and sealed, and the measured pressure is If the variation is within the predetermined allowable range, it is estimated that the temperature variation during pressure measurement for inspection is also less than the predetermined value. Therefore, the presence or absence of temperature fluctuations can be confirmed by measuring the pressure as described above. It should be noted that confirmation of the presence or absence of temperature fluctuations by measuring the pressure may be performed using a separately provided pressure gauge or reference device. In this case, it is possible to easily perform the measurement for confirming the temperature fluctuation during the pressure measurement for the inspection or during the period during the measurement. Also, when the pressure in the pipe 301 is set to the atmospheric pressure, even if there is some leakage, there is almost no movement of air inside or outside the pipe 301. Therefore, it is necessary to check the presence or absence of temperature fluctuations. can do.

なお、上記各実施形態や変形例で説明した構成要素等は、論理的に可能な範囲で種々組み合わされてもよい。 Note that the components and the like described in each of the above embodiments and modifications may be combined in various ways within a logically possible range.

１００ 圧力計
１０１ 圧力センサ
１０２ 制御部
１０３ 表示部
１０４ 温度センサ
１０５ 通信部
１５１ 温度計
２００ 基準器
２０１ 圧力センサ
２０２ 制御部
２０３ 表示部
２０４ 温度センサ
２０５ 通信部
３０１ 配管
３０２ バルブ
３０３ 圧力源
３０４ バルブ
４００ 管理装置
５００ インターネット
６００ メーカサーバ 100 pressure gauge 101 pressure sensor 102 control unit 103 display unit 104 temperature sensor 105 communication unit 151 thermometer 200 reference device 201 pressure sensor 202 control unit 203 display unit 204 temperature sensor 205 communication unit 301 piping 302 valve 303 pressure source 304 valve 400 management Device 500 Internet 600 Maker server

Claims (12)

検査対象の圧力計が所定の基準器と同じ圧力を計測するかどうかを検査する圧力計の検査方法であって、
上記圧力計と上記基準器とを連通させるように接続する接続工程と、
上記連通の内部空間に、大気圧または所定の圧力を印加して封止する圧力印加工程と、
恒温槽外の環境中で、 上記圧力計および上記基準器によって計測される圧力の差が所定の許容範囲内であることを確認する計測圧力確認工程と、
上記圧力計測より前の時点から後の時点までの間の期間内に含まれる所定の温度確認期間における上記圧力計および基準器の少なくとも一方の温度、またはこれらの周囲の雰囲気の温度の変動が所定の許容範囲内であることを確認する温度確認工程と、
を有することを特徴とする圧力計の検査方法。 A pressure gauge inspection method for inspecting whether a pressure gauge to be inspected measures the same pressure as a predetermined reference device,
a connecting step of connecting the pressure gauge and the reference device so as to communicate with each other;
a pressure applying step of applying atmospheric pressure or a predetermined pressure to the communicating internal space to seal it;
In the environment outside the constant temperature bath, a measured pressure confirmation step of confirming that the pressure difference measured by the pressure gauge and the reference device is within a predetermined allowable range;
The temperature of at least one of the pressure gauge and the reference device, or the temperature of the surrounding atmosphere during a predetermined temperature confirmation period included in the period from the time before the pressure measurement to the time after the pressure measurement. A temperature confirmation step to confirm that it is within the allowable range of
A method of inspecting a pressure gauge, comprising: 請求項１の圧力計の検査方法であって、
上記計測圧力確認工程、および温度確認工程を管理装置に行わせることを特徴とする圧力計の検査方法。 A pressure gauge inspection method according to claim 1,
A method of inspecting a pressure gauge, characterized in that the measured pressure confirming step and the temperature confirming step are performed by a management device. 請求項２の圧力計の検査方法であって、
上記圧力の差が上記所定の許容範囲内にないか、または上記温度の変動が上記所定の許容範囲内にない場合に、上記管理装置によって、上記検査対象の圧力計に計測動作を停止させ、または検査結果を報知させることを特徴とする圧力計の検査方法。 The pressure gauge inspection method according to claim 2,
If the pressure difference is not within the predetermined allowable range or the temperature fluctuation is not within the predetermined allowable range, the management device causes the pressure gauge to be inspected to stop measuring operation; Alternatively, a method of inspecting a pressure gauge, characterized in that an inspection result is notified. 請求項１から請求項３のうち何れか１項の圧力計の検査方法であって、
上記温度確認工程は、上記計測圧力確認工程が行われる際の所定の温度確認期間に、上記内部空間内、または別途設けられた圧力計または基準器の内部空間内の圧力を所定の圧力、または大気圧にして封止した状態で、上記圧力計または基準器によって計測される圧力の変動が所定の許容変動範囲内であることを確認することにより行われることを特徴とする圧力計の検査方法。 A pressure gauge inspection method according to any one of claims 1 to 3,
In the temperature confirmation step, during a predetermined temperature confirmation period when the measured pressure confirmation step is performed, the pressure in the internal space or the internal space of a separately provided pressure gauge or reference device is set to a predetermined pressure, or A method of inspecting a pressure gauge, characterized in that it is carried out by confirming that fluctuations in pressure measured by the pressure gauge or reference device are within a predetermined allowable fluctuation range in a sealed state at atmospheric pressure. . 請求項１から請求項４のうち何れか１項の圧力計の検査方法であって、
１台の基準器に対して、複数台の圧力計を同時に検査することを特徴とする圧力計の検査方法。 A pressure gauge inspection method according to any one of claims 1 to 4,
A pressure gauge inspection method comprising simultaneously inspecting a plurality of pressure gauges with respect to one reference device. 検査対象の圧力計が所定の基準器と同じ圧力を計測するかどうかを検査する圧力計の検査装置であって、
上記圧力計と上記基準器とを連通させるように接続し、上記連通の内部空間に、大気圧または所定の圧力を印加して封止した状態で、
上記圧力計および基準器によって計測される圧力に応じた圧力信号、ならびに上記圧力計および基準器の温度、またはこれらの周囲の雰囲気の温度に応じた温度信号が入力される管理装置を有し、
上記管理装置は、
恒温槽外の環境中で、 上記圧力計および上記基準器によって計測される圧力の差が所定の許容範囲内であることを確認するとともに、
上記圧力計測より前の時点から後の時点までの間の期間内に含まれる所定の温度確認期間における上記圧力計および上記基準器の少なくとも一方の温度、またはこれらの周囲の雰囲気の温度の変動が所定の許容範囲内であることを確認することを特徴とする圧力計の検査装置。 A pressure gauge inspection device for inspecting whether a pressure gauge to be inspected measures the same pressure as a predetermined reference device,
In a state in which the pressure gauge and the reference device are connected so as to communicate with each other, and the internal space of the communication is sealed by applying atmospheric pressure or a predetermined pressure,
a management device to which a pressure signal corresponding to the pressure measured by the pressure gauge and the reference device and a temperature signal corresponding to the temperature of the pressure gauge and the reference device or the temperature of the atmosphere surrounding them are input;
The above management device
In the environment outside the constant temperature bath, While confirming that the pressure difference measured by the pressure gauge and the reference device is within a predetermined allowable range,
A change in the temperature of at least one of the pressure gauge and the reference device, or the temperature of the surrounding atmosphere during a predetermined temperature confirmation period included in the period from the time before the pressure measurement to the time after the pressure measurement An inspection device for a pressure gauge, characterized by checking that it is within a predetermined allowable range. 請求項６の圧力計の検査装置であって、
上記管理装置は、
上記圧力の差が上記所定の許容範囲内にないか、または上記温度の変動が上記所定の許容範囲内にない場合に、上記検査対象の圧力計に計測動作を停止させ、または検査結果を報知させることを特徴とする圧力計の検査装置。 The pressure gauge inspection device according to claim 6,
The above management device
When the pressure difference is not within the predetermined allowable range or the temperature fluctuation is not within the predetermined allowable range, the measuring operation of the pressure gauge to be inspected is stopped or the inspection result is notified. A pressure gauge inspection device characterized by: 請求項６から請求項７のうち何れか１項の圧力計の検査装置であって、
上記管理装置は、
圧力の差が確認される際の所定の温度確認期間に、上記内部空間内、または別途設けられた圧力計または基準器の内部空間内の圧力を所定の圧力、または大気圧にして封止した状態で、上記圧力計または基準器によって計測される圧力の変動が所定の許容変動範囲内であることを確認することにより、上記温度の変動の確認を行うことを特徴とする圧力計の検査装置。 The pressure gauge inspection device according to any one of claims 6 to 7,
The above management device
During the predetermined temperature confirmation period when the pressure difference is confirmed, the pressure in the internal space or the internal space of the separately provided pressure gauge or reference device is set to a predetermined pressure or atmospheric pressure and sealed. A pressure gauge inspection device characterized by checking the temperature fluctuation by confirming that the pressure fluctuation measured by the pressure gauge or the reference device is within a predetermined allowable fluctuation range. . 請求項６から請求項８のうち何れか１項の圧力計の検査装置であって、
上記管理装置は、１台の基準器に対して、複数台の圧力計を同時に検査することを特徴とする圧力計の検査装置。 The pressure gauge inspection device according to any one of claims 6 to 8,
A pressure gauge inspection device, wherein the management device simultaneously inspects a plurality of pressure gauges with respect to one reference device. 請求項６から請求項９のうち何れか１項の圧力計の検査装置であって、
上記管理装置が、上記検査対象の圧力計、および上記基準器の少なくとも一方に設けられて成ることを特徴とする圧力計の検査装置。 The pressure gauge inspection device according to any one of claims 6 to 9,
A pressure gauge inspection device, wherein the management device is provided in at least one of the pressure gauge to be inspected and the reference device. 請求項６から請求項１０のうち何れか１項の圧力計の検査装置であって、
上記管理装置は、
上記圧力の差が上記所定の許容範囲内にあり、かつ、上記温度の変動が上記所定の許容範囲内にある場合に、その旨を示す情報、および上記検査対象の圧力計を特定する情報を所定のサーバ装置に送信することを特徴とする圧力計の検査装置。 The pressure gauge inspection device according to any one of claims 6 to 10,
The above management device
When the pressure difference is within the predetermined allowable range and the temperature fluctuation is within the predetermined allowable range, information indicating that fact and information specifying the pressure gauge to be inspected are provided. A pressure gauge inspection device characterized by transmitting to a predetermined server device. 請求項６から請求項１０のうち何れか１項の圧力計の検査装置であって、
上記管理装置は、
上記圧力計および基準器によって計測される圧力に応じた圧力信号、上記圧力計および基準器の温度、またはこれらの周囲の雰囲気の温度に応じた温度信号、並びに上記検査対象の圧力計を特定する情報を所定のサーバ装置に送信することを特徴とする圧力計の検査装置。 The pressure gauge inspection device according to any one of claims 6 to 10,
The above management device
A pressure signal corresponding to the pressure measured by the pressure gauge and the reference device, a temperature of the pressure gauge and the reference device, or a temperature signal corresponding to the temperature of the atmosphere surrounding them, and the pressure gauge to be inspected are specified. A pressure gauge inspection device characterized by transmitting information to a predetermined server device.
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JP4950603B2 (en) 2006-09-08 2012-06-13 株式会社東芝 Plant pressure transmitter inspection system
JP6370113B2 (en) 2014-05-29 2018-08-08 株式会社エイムテック Pressure gauge inspection method

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JP2002286576A (en) 2001-03-26 2002-10-03 Mitsubishi Heavy Ind Ltd Pressure-calibrating apparatus
JP4950603B2 (en) 2006-09-08 2012-06-13 株式会社東芝 Plant pressure transmitter inspection system
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