JPH0167544U - - Google Patents
Info
- Publication number
- JPH0167544U JPH0167544U JP1987162968U JP16296887U JPH0167544U JP H0167544 U JPH0167544 U JP H0167544U JP 1987162968 U JP1987162968 U JP 1987162968U JP 16296887 U JP16296887 U JP 16296887U JP H0167544 U JPH0167544 U JP H0167544U
- Authority
- JP
- Japan
- Prior art keywords
- display
- circuit section
- section
- gas pressure
- pressure gauge
- 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
- 239000013078 crystal Substances 0.000 claims description 6
- 238000006243 chemical reaction Methods 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 5
- 238000011088 calibration curve Methods 0.000 description 1
Landscapes
- Measuring Fluid Pressure (AREA)
Description
第１図は本考案による水晶式気体圧力計の回路
ブロツク図、第２図は従来の水晶式気体圧力計の
回路ブロツク図、第３図は気体圧力―水晶振動子
共振抵抗・共振電流特性図、第４図はガス種の校
正曲線図、第５図は本考案による警報リセツト装
置の回路図を示す。
１１……ＰＬＬ回路部、１２……表示変換回路
部、１３……表示部、２１……コンパレータ、２
２……警報装置、２３……警報リセツト装置。
Fig. 1 is a circuit block diagram of a crystal gas pressure gauge according to the present invention, Fig. 2 is a circuit block diagram of a conventional crystal gas pressure gauge, and Fig. 3 is a gas pressure-crystal oscillator resonance resistance/resonance current characteristic diagram. , FIG. 4 shows a gas type calibration curve diagram, and FIG. 5 shows a circuit diagram of an alarm reset device according to the present invention. 11... PLL circuit section, 12... Display conversion circuit section, 13... Display section, 21... Comparator, 2
2...Alarm device, 23...Alarm reset device.
Claims (1)
数における共振電流を電圧として増幅し出力する
フエーズ・ロツクド・ループ回路部、該フエーズ
・ロツクド・ループ回路部に接続された表示変換
回路部、該表示変換回路部に接続された表示部を
有し、前記表示変換回路部にコンパレータを有し
、かつ前記表示部に警報装置を有する水晶式気体
圧力計において、表示部に警報装置を有する水晶
式気体圧力計において、表示部に警報リセツト装
置を有することを特徴とする水晶式気体圧力計。 A phase locked loop circuit section that includes at least a vibrator and amplifies and outputs a resonant current at the resonant frequency of the vibrator as a voltage, a display conversion circuit section connected to the phase locked loop circuit section, and the display. A crystal gas pressure gauge having a display section connected to a conversion circuit section, a comparator in the display conversion circuit section, and an alarm device in the display section, wherein the crystal gas pressure gauge has an alarm device in the display section. A crystal gas pressure gauge characterized by having an alarm reset device in a display section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987162968U JPH0167544U (en) | 1987-10-23 | 1987-10-23 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987162968U JPH0167544U (en) | 1987-10-23 | 1987-10-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0167544U true JPH0167544U (en) | 1989-05-01 |
Family
ID=31447273
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987162968U Pending JPH0167544U (en) | 1987-10-23 | 1987-10-23 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0167544U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0643053A (en) * | 1991-03-07 | 1994-02-18 | Yokogawa Electric Corp | Vibration sensor |
-
1987
- 1987-10-23 JP JP1987162968U patent/JPH0167544U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0643053A (en) * | 1991-03-07 | 1994-02-18 | Yokogawa Electric Corp | Vibration sensor |