JPS63159496U - - Google Patents
Info
- Publication number
- JPS63159496U JPS63159496U JP5242287U JP5242287U JPS63159496U JP S63159496 U JPS63159496 U JP S63159496U JP 5242287 U JP5242287 U JP 5242287U JP 5242287 U JP5242287 U JP 5242287U JP S63159496 U JPS63159496 U JP S63159496U
- Authority
- JP
- Japan
- Prior art keywords
- signal
- electrical
- optical
- converts
- conversion circuit
- 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
- 238000006243 chemical reaction Methods 0.000 claims description 7
- 230000003287 optical effect Effects 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
- 239000000945 filler Substances 0.000 description 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Arrangements For Transmission Of Measured Signals (AREA)
Description
第１図は本考案の一実施例の概略構成図、第２
図は第１図の電・空ポジシヨナーの動作原理図、
第３図は第１図の信号変換装置の耐圧防爆構造概
略構成図を示し、同図Ａはその正面断面図、同図
Ｂはその側面図である。
１：光・電気変換回路、２：デイジタル・アナ
ログ変換回路、３：出力回路、４：電・空ボジシ
ヨナー、１１：フオトダイオード、１３：スレシ
ユホールド電圧、１４：コンパレータ、２０：信
号変換装置、３０：耐圧防爆容器、３１：蓋部、
３４：内筒、３９，４１：リード線、４０：プリ
ント基板、４３：外筒、４４：充填剤。
Figure 1 is a schematic diagram of an embodiment of the present invention;
The figure shows the operating principle of the electric/pneumatic positioner in Figure 1.
FIG. 3 shows a schematic block diagram of the pressure-resistant explosion-proof structure of the signal converter shown in FIG. 1, and FIG. 3A is a front sectional view thereof, and FIG. 3B is a side view thereof. 1: Optical/electric conversion circuit, 2: Digital/analog conversion circuit, 3: Output circuit, 4: Electric/air positioner, 11: Photo diode, 13: Threshold voltage, 14: Comparator, 20: Signal converter, 30: Pressure-resistant explosion-proof container, 31: Lid,
34: Inner cylinder, 39, 41: Lead wire, 40: Printed circuit board, 43: Outer cylinder, 44: Filler.
Claims (1)
の光デイジタル信号に変換して伝送する光計装シ
ステムにおいて、前記光デイジタル信号を電気的
デイジタル信号に変換する光・電気変換回路と、
前記電気的デイジタル信号を電気的アナログ信号
に変換するデイジタル・アナログ変換回路と、前
記電気的アナログ信号を所定範囲に統一された信
号に変換し出力する出力回路とを備えたことを特
徴とする信号変換装置。 (2) 実用新案登録請求の範囲第１項に記載の信
号変換装置において、前記信号変換装置は、耐圧
防爆容器に収納され、かつ光・電変換回路を前記
耐圧防爆容器の一部として一体的に構成したこと
を特徴とする信号変換装置。[Claims for Utility Model Registration] (1) In an optical instrumentation system that converts an industrial process quantity to be measured and controlled into a predetermined optical digital signal and transmits the same, the optical digital signal is converted into an electrical digital signal. Optical/electrical conversion circuit,
A signal comprising: a digital-to-analog conversion circuit that converts the electrical digital signal into an electrical analog signal; and an output circuit that converts the electrical analog signal into a signal unified within a predetermined range and outputs the signal. conversion device. (2) Utility Model Registration Scope of Claims In the signal converting device according to claim 1, the signal converting device is housed in a flameproof explosion-proof container, and an optical/electrical conversion circuit is integrated as a part of the flameproof explosion-proof container. A signal conversion device characterized in that it is configured as follows.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5242287U JPS63159496U (en) | 1987-04-07 | 1987-04-07 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5242287U JPS63159496U (en) | 1987-04-07 | 1987-04-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63159496U true JPS63159496U (en) | 1988-10-19 |
Family
ID=30877578
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5242287U Pending JPS63159496U (en) | 1987-04-07 | 1987-04-07 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63159496U (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51143181A (en) * | 1975-06-05 | 1976-12-09 | Yokogawa Hokushin Electric Corp | Process controller |
| JPS61118900A (en) * | 1984-10-25 | 1986-06-06 | シーガー リミテツド | Remote parameter adjustor for electric circuit in housing |
-
1987
- 1987-04-07 JP JP5242287U patent/JPS63159496U/ja active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51143181A (en) * | 1975-06-05 | 1976-12-09 | Yokogawa Hokushin Electric Corp | Process controller |
| JPS61118900A (en) * | 1984-10-25 | 1986-06-06 | シーガー リミテツド | Remote parameter adjustor for electric circuit in housing |
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