JPS59146747U - differential pressure transmitter - Google Patents
differential pressure transmitterInfo
- Publication number
- JPS59146747U JPS59146747U JP4122283U JP4122283U JPS59146747U JP S59146747 U JPS59146747 U JP S59146747U JP 4122283 U JP4122283 U JP 4122283U JP 4122283 U JP4122283 U JP 4122283U JP S59146747 U JPS59146747 U JP S59146747U
- Authority
- JP
- Japan
- Prior art keywords
- differential pressure
- signal
- pulse
- circuit
- converts
- 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
Landscapes
- Measuring Fluid Pressure (AREA)
- Optical Transform (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図はこの考案の１実施例を示す差圧伝送器のブロッ
ク図、第２図は他の実施例を示す差圧伝送器の一部回路
を示すブロック図である。
１：差圧センサ、５・６・７：無安定マルチバイブレー
タ、１１：発光ダイオード、１２：光ファイバ、１３：
二次変換部、２０・２１・２２：カウンタ。FIG. 1 is a block diagram of a differential pressure transmitter showing one embodiment of this invention, and FIG. 2 is a block diagram showing a partial circuit of a differential pressure transmitter showing another embodiment. 1: Differential pressure sensor, 5, 6, 7: Astable multivibrator, 11: Light emitting diode, 12: Optical fiber, 13:
Secondary conversion section, 20, 21, 22: counter.
Claims (3)
、この差圧センサで検出される差圧に応じたパルス信号
を出力する手段と、このパルス信号を光信号に変換する
電光変換器と、この電光変換器よりの光信号を伝送する
光ファイバと、この光ファイバよりの光信号を受けて電
気信号に変換する光電変換器と、この光電変換器で変換
された信号を標準電流に変換する信号変換部とからなる
差圧伝送器。(1) A differential pressure sensor that detects differential pressure and converts it into an electrical signal, a means for outputting a pulse signal according to the differential pressure detected by this differential pressure sensor, and an electric light that converts this pulse signal into an optical signal. A converter, an optical fiber that transmits the optical signal from this electro-optical converter, a photoelectric converter that receives the optical signal from this optical fiber and converts it into an electrical signal, and a standard that converts the signal converted by this photoelectric converter into an electrical signal. A differential pressure transmitter consisting of a signal converter that converts into current.
する回路素子であり、前記パルス信号を出力する手段は
、前記回路素子の回路定数の変化で発振周波数が変化す
るパルス発振回路であることを特徴とする実用新案登録
請求の範囲第１項記載の差圧伝送器。(2) The differential pressure sensor is a circuit element whose circuit constant changes according to the differential pressure, and the means for outputting the pulse signal is a pulse oscillation circuit whose oscillation frequency changes with a change in the circuit constant of the circuit element. A differential pressure transmitter according to claim 1, which is a utility model.
する回路素子であり、前記パルス信号を出力する手段は
前記回路素子の回路定数の変化で発振周波数が変化する
パルス発振回路と、このパルス発振回路より出力される
パルス信号をカウントするカウンタとを含むものである
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
差圧伝送器。(3) The differential pressure sensor is a circuit element whose circuit constant changes according to the differential pressure, and the means for outputting the pulse signal is a pulse oscillation circuit whose oscillation frequency changes with a change in the circuit constant of the circuit element. , and a counter for counting the pulse signals output from the pulse oscillation circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4122283U JPS59146747U (en) | 1983-03-22 | 1983-03-22 | differential pressure transmitter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4122283U JPS59146747U (en) | 1983-03-22 | 1983-03-22 | differential pressure transmitter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS59146747U true JPS59146747U (en) | 1984-10-01 |
Family
ID=30171817
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4122283U Pending JPS59146747U (en) | 1983-03-22 | 1983-03-22 | differential pressure transmitter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59146747U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51803A (en) * | 1974-06-21 | 1976-01-07 | Hitachi Ltd |
-
1983
- 1983-03-22 JP JP4122283U patent/JPS59146747U/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51803A (en) * | 1974-06-21 | 1976-01-07 | Hitachi Ltd |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS59146747U (en) | differential pressure transmitter | |
| JPS594405U (en) | distance measuring device | |
| JPS59147293U (en) | temperature transmitter | |
| JPS60111204U (en) | Fiber optic displacement meter | |
| JPS63164820U (en) | ||
| JPS5920398U (en) | transducer | |
| JPS58145574U (en) | Wiring search device | |
| JPS5876243U (en) | electronic timer | |
| JPS5959054U (en) | Fiber optic signal transmission microphone | |
| JPS6092381U (en) | Destructive intrusion detection device | |
| JPS5871898U (en) | Measurement signal transmission device | |
| JPS6451838U (en) | ||
| JPS6057248U (en) | Light receiving circuit for optical cable link | |
| JPS5810016U (en) | Photoelectric encoder failure detection circuit | |
| JPS6128043U (en) | humidity detector | |
| JPS6065689U (en) | object sensing device | |
| JPS6017050U (en) | optical transmitter | |
| JPS60181684U (en) | optical radar device | |
| JPS5824932U (en) | photoelectric switch | |
| JPS6066144U (en) | optical receiver | |
| JPS609352U (en) | isolator | |
| JPS6057247U (en) | Light receiving circuit for optical cable link | |
| JPS59106016U (en) | optical sensor | |
| JPS5824078U (en) | High voltage measuring device | |
| JPS5829855U (en) | photo coupler |