JPH01139521U - - Google Patents
Info
- Publication number
- JPH01139521U JPH01139521U JP3159488U JP3159488U JPH01139521U JP H01139521 U JPH01139521 U JP H01139521U JP 3159488 U JP3159488 U JP 3159488U JP 3159488 U JP3159488 U JP 3159488U JP H01139521 U JPH01139521 U JP H01139521U
- Authority
- JP
- Japan
- Prior art keywords
- band heater
- comparator
- obtaining
- response
- changes
- 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
- 238000012806 monitoring device Methods 0.000 claims description 6
- 238000001514 detection method Methods 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 5
Description
第１図は本考案のバンドヒータの断線監視装置
の概略全体構成図、第２図はそのバンドヒータの
断線監視装置の設定器の構成図、第３図はそのバ
ンドヒータの断線監視装置の他の設定器の構成図
、第４図は従来のバンドヒータの断線監視装置の
構成図、第５図はそのバンドヒータの断線監視装
置の電流検出器の構成図である。
１０……設定器（電源電圧追従装置付き）、１
１……電子制御装置、１２……Ａ／Ｄ変換器、１
３……ＣＰＵ、１４……メモリ、１５……Ｄ／Ａ
変換器、１６……ヒータ電源電圧検出器、１７…
…可変抵抗器。
FIG. 1 is a schematic overall configuration diagram of the band heater disconnection monitoring device of the present invention, FIG. 2 is a configuration diagram of the setting device of the band heater disconnection monitoring device, and FIG. 3 is a diagram showing other components of the band heater disconnection monitoring device. FIG. 4 is a block diagram of a conventional band heater disconnection monitoring device, and FIG. 5 is a block diagram of a current detector of the band heater disconnection monitoring device. 10...Setting device (with power supply voltage tracking device), 1
1...Electronic control device, 12...A/D converter, 1
3...CPU, 14...Memory, 15...D/A
Converter, 16... Heater power supply voltage detector, 17...
...variable resistor.
Claims (1)
号を得る検出手段と、前記バンドヒータの電源電
圧に対応して変動する基準値を得る設定器と、前
記検出手段と設定器からの出力信号を比較する比
較器と、該比較器の比較結果に基づいて警報を出
力する警報手段とを具備するバンドヒータの断線
監視装置。 A detection means for obtaining an electric signal that changes in response to a disconnection of the band heater, a setting device for obtaining a reference value that changes in response to the power supply voltage of the band heater, and a comparison between the output signals from the detection means and the setting device. A disconnection monitoring device for a band heater, comprising: a comparator that compares the comparator; and an alarm means that outputs an alarm based on the comparison result of the comparator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3159488U JPH01139521U (en) | 1988-03-11 | 1988-03-11 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3159488U JPH01139521U (en) | 1988-03-11 | 1988-03-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01139521U true JPH01139521U (en) | 1989-09-25 |
Family
ID=31257560
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3159488U Pending JPH01139521U (en) | 1988-03-11 | 1988-03-11 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01139521U (en) |
-
1988
- 1988-03-11 JP JP3159488U patent/JPH01139521U/ja active Pending
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