JPH02122331U - - Google Patents
Info
- Publication number
- JPH02122331U JPH02122331U JP3222889U JP3222889U JPH02122331U JP H02122331 U JPH02122331 U JP H02122331U JP 3222889 U JP3222889 U JP 3222889U JP 3222889 U JP3222889 U JP 3222889U JP H02122331 U JPH02122331 U JP H02122331U
- Authority
- JP
- Japan
- Prior art keywords
- sensor
- counter
- circuit
- alarm circuit
- mode
- 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
- 238000001514 detection method Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
Description
第１図は本考案に係る炎検知装置の斜視図、第
２図は回路の説明図である。
２……第１センサー、３……第２センサー、１
３……警報表示装置、１６……カウンタ、１７…
…タイマー、１８……アラーム回路、１９，２０
，２２……モード切換用第１、第２、第３スイツ
チ。
FIG. 1 is a perspective view of a flame detection device according to the present invention, and FIG. 2 is an explanatory diagram of a circuit. 2...First sensor, 3...Second sensor, 1
3...Alarm display device, 16...Counter, 17...
...Timer, 18...Alarm circuit, 19,20
, 22...First, second, and third switches for mode switching.
Claims (1)
第１センサー及び第２センサーからの信号を入力
するカウンタと、第２センサーとカウンタの間に
介装するタイマーと、カウンタからの信号を入力
するアラーム回路と、アラーム回路からの出力に
より動作する警報表示装置と、第１センサー及び
第２センサーとアラーム回路の間の回路をＡ，Ｂ
，Ｃの３モードに切換えるモード切換スイツチと
からなり、Ａモードに切換えたとき第２センサー
とカウンタとの回路が開くと共に、第１センサー
とアラーム回路がバイパス回路により接続され、
Ｂモードに切換えたとき第１センサーとアラーム
回路とが接続されると共に、第２センサーとカウ
ンタがバイパス回路により接続され、Ｃモードに
切換えたとき、第１センサーとカウンタ及びアラ
ーム回路が接続されると共に、第２センサーとカ
ウンタがタイマーを介して接続されるように構成
してなる炎検知装置。 a first sensor and a second sensor for flame detection;
A counter that inputs signals from the first sensor and the second sensor, a timer interposed between the second sensor and the counter, an alarm circuit that inputs the signals from the counter, and an alarm activated by the output from the alarm circuit. The circuits between the display device, the first sensor, the second sensor, and the alarm circuit are connected to A and B.
, C, and a mode changeover switch for switching to three modes: , C. When switched to A mode, the circuit between the second sensor and the counter is opened, and the first sensor and alarm circuit are connected by a bypass circuit.
When switching to B mode, the first sensor and alarm circuit are connected, and the second sensor and counter are connected by a bypass circuit, and when switching to C mode, the first sensor, counter, and alarm circuit are connected. In addition, a flame detection device configured such that the second sensor and the counter are connected via a timer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3222889U JPH02122331U (en) | 1989-03-22 | 1989-03-22 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3222889U JPH02122331U (en) | 1989-03-22 | 1989-03-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02122331U true JPH02122331U (en) | 1990-10-05 |
Family
ID=31258592
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3222889U Pending JPH02122331U (en) | 1989-03-22 | 1989-03-22 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02122331U (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53143284A (en) * | 1977-05-19 | 1978-12-13 | Nittan Co Ltd | Flame detector |
| JPS5939079A (en) * | 1982-08-27 | 1984-03-03 | Matsushita Electric Works Ltd | Piezoelectric bimorph |
-
1989
- 1989-03-22 JP JP3222889U patent/JPH02122331U/ja active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53143284A (en) * | 1977-05-19 | 1978-12-13 | Nittan Co Ltd | Flame detector |
| JPS5939079A (en) * | 1982-08-27 | 1984-03-03 | Matsushita Electric Works Ltd | Piezoelectric bimorph |