JPS62201034U - - Google Patents
Info
- Publication number
- JPS62201034U JPS62201034U JP9026286U JP9026286U JPS62201034U JP S62201034 U JPS62201034 U JP S62201034U JP 9026286 U JP9026286 U JP 9026286U JP 9026286 U JP9026286 U JP 9026286U JP S62201034 U JPS62201034 U JP S62201034U
- Authority
- JP
- Japan
- Prior art keywords
- pressure
- measurement
- display
- signal
- initial value
- 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
- 238000009530 blood pressure measurement Methods 0.000 claims 3
- 238000005259 measurement Methods 0.000 claims 2
- 238000000691 measurement method Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
- 238000007689 inspection Methods 0.000 description 1
Landscapes
- Measuring Fluid Pressure (AREA)
Description
第１図は本考案のガス配管用圧力検査装置の正
面図、第２図は同ブロツク図、第３図は動作フロ
ー図である。
尚、図中、Ａ：ガス配管用圧力検査装置、１：
圧力センサー、４：機能切換スイツチ、５：比較
演算装置、６：Ａ／Ｄ変換器、７：表示装置、８
：比較演算機、９：発振器、１０：減算カウンタ
ー、１１：差動増幅器を夫々示す。
FIG. 1 is a front view of the gas piping pressure testing device of the present invention, FIG. 2 is a block diagram thereof, and FIG. 3 is an operation flow diagram. In addition, in the figure, A: pressure inspection device for gas piping, 1:
Pressure sensor, 4: Function changeover switch, 5: Comparison calculation device, 6: A/D converter, 7: Display device, 8
: Comparison calculator, 9: Oscillator, 10: Subtraction counter, and 11: Differential amplifier.
Claims (1)
の圧力に応じた電圧を出力する圧力センサーと、
その測定方法により通常の供給圧測定、漏洩測定
、最低圧測定に切換える機能切換スイツチと、比
較演算機、発振器減算カウンター及び差動増幅器
とにより構成されると共に前記圧力センサーと電
気的に接続され、漏洩測定の場合は圧力センサー
から出力される電圧に応じた圧力と、減算カウン
ターで設定された最高圧力との比較演算値を配管
内の圧力の初期値として記憶すると共に、該初期
値と所定時間後の圧力の差を比較演算し、その値
を表示用圧力信号として出力する一方、最低圧測
定の場合は圧力センサーから出力される電圧に応
じた圧力の初期値と、その後の圧力とを比較演算
して常時最低圧の表示用圧力信号を出力し続ける
比較演算装置と、該比較演算装置からの表示用圧
力信号を入力し、それをデジタル信号に変換する
Ａ／Ｄ変換器と、該デジタル信号を入力しそれに
対応する数値を表示部に表示する表示装置とによ
りなるガス配管用圧力検査装置。 A pressure sensor that is connected to the gas supplied in the gas pipe and outputs a voltage according to the pressure;
It is composed of a function changeover switch that switches between normal supply pressure measurement, leakage measurement, and minimum pressure measurement depending on the measurement method, a comparator, an oscillator subtraction counter, and a differential amplifier, and is electrically connected to the pressure sensor, In the case of leakage measurement, the calculated value of the pressure corresponding to the voltage output from the pressure sensor and the maximum pressure set by the subtraction counter is stored as the initial value of the pressure in the piping, and the initial value and the predetermined time are stored. Compare and calculate the difference in subsequent pressures and output that value as a pressure signal for display.In the case of minimum pressure measurement, compare the initial value of pressure according to the voltage output from the pressure sensor with the subsequent pressure. A comparison calculation device that calculates and constantly outputs a display pressure signal of the lowest pressure, an A/D converter that inputs the display pressure signal from the comparison calculation device and converts it into a digital signal, and the digital A pressure testing device for gas piping that includes a display device that inputs a signal and displays the corresponding numerical value on a display section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9026286U JPS62201034U (en) | 1986-06-12 | 1986-06-12 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9026286U JPS62201034U (en) | 1986-06-12 | 1986-06-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62201034U true JPS62201034U (en) | 1987-12-22 |
Family
ID=30949967
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9026286U Pending JPS62201034U (en) | 1986-06-12 | 1986-06-12 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62201034U (en) |
-
1986
- 1986-06-12 JP JP9026286U patent/JPS62201034U/ja active Pending
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