JPS6397832U - - Google Patents
Info
- Publication number
- JPS6397832U JPS6397832U JP19334186U JP19334186U JPS6397832U JP S6397832 U JPS6397832 U JP S6397832U JP 19334186 U JP19334186 U JP 19334186U JP 19334186 U JP19334186 U JP 19334186U JP S6397832 U JPS6397832 U JP S6397832U
- Authority
- JP
- Japan
- Prior art keywords
- gas pressure
- pressure gauge
- alarm device
- circuit section
- section
- 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 9
- 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図は本考案による第１の実施例を示す水晶
式気体圧力計の回路ブロツク図、第２図は本考案
による第２の実施例を示す水晶式気体圧力計の回
路ブロツク図、第３図は従来の水晶式気体圧力計
の回路ブロツク図、第４，５，６図は本考案によ
る警報装置の実施例を示す図、第７図は気体圧力
−水晶振動子共振抵抗、共振電流特性図、第８図
はガス種の校正曲線を示す図である。
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。
FIG. 1 is a circuit block diagram of a crystal gas pressure gauge showing a first embodiment of the present invention, FIG. 2 is a circuit block diagram of a crystal gas pressure gauge showing a second embodiment of the invention, and FIG. The figure is a circuit block diagram of a conventional crystal gas pressure gauge, Figures 4, 5, and 6 are diagrams showing an embodiment of the alarm device according to the present invention, and Figure 7 is the gas pressure-crystal oscillator resonance resistance and resonance current characteristics. 8 are diagrams showing calibration curves for gas types. 11... PLL circuit section, 12... Display conversion circuit section, 13... Display section, 21... Comparator, 2
2...Alarm device.
Claims (1)
器、低域通過濾波器及び増幅器より成るフエーズ
・ロツクド・ループ回路部と、前記周波数可変発
振器に接続された水晶振動子と前記フエーズ・ロ
ツクド・ループ回路部に接続された表示変換回路
部と、前記表示変換回路部に接続された表示部と
を有する水晶式気体圧力計において、前記表示変
換部にコンパレータを有し、かつ前記表示部に警
報装置を有することを特徴とする水晶式気体圧力
計。 (2) 前記警報装置が照光式であることを特徴と
する実用新案登録請求の範囲第１項記載の水晶式
気体圧力計。 (3) 前記警報装置が発音式であることを特徴と
する実用新案登録請求の範囲第１項記載の水晶式
気体圧力計。 (4) 前記警報装置が照光式と、発音式の両者を
備えたことを特徴とする実用新案登録請求の範囲
第１項記載の水晶式気体圧力計。[Claims for Utility Model Registration] (1) A phase-locked loop circuit section consisting of at least a variable frequency oscillator, a phase comparator, a low-pass filter, and an amplifier, and a crystal resonator connected to the variable frequency oscillator. a display conversion circuit section connected to the phase locked loop circuit section; and a display section connected to the display conversion circuit section, the display conversion section having a comparator; A crystal gas pressure gauge, further comprising an alarm device in the display section. (2) The crystal gas pressure gauge according to claim 1, wherein the alarm device is of an illuminated type. (3) The crystal gas pressure gauge according to claim 1, wherein the alarm device is a sounding type. (4) The crystal gas pressure gauge according to claim 1, wherein the alarm device is of both an illuminated type and a sound type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19334186U JPS6397832U (en) | 1986-12-16 | 1986-12-16 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19334186U JPS6397832U (en) | 1986-12-16 | 1986-12-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6397832U true JPS6397832U (en) | 1988-06-24 |
Family
ID=31149276
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19334186U Pending JPS6397832U (en) | 1986-12-16 | 1986-12-16 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6397832U (en) |
-
1986
- 1986-12-16 JP JP19334186U patent/JPS6397832U/ja active Pending