JPH01102783U - - Google Patents
Info
- Publication number
- JPH01102783U JPH01102783U JP19721887U JP19721887U JPH01102783U JP H01102783 U JPH01102783 U JP H01102783U JP 19721887 U JP19721887 U JP 19721887U JP 19721887 U JP19721887 U JP 19721887U JP H01102783 U JPH01102783 U JP H01102783U
- Authority
- JP
- Japan
- Prior art keywords
- measurement
- reference signal
- range
- measuring device
- electrical measuring
- 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.)
- Granted
Links
- 238000004092 self-diagnosis Methods 0.000 claims description 3
- 238000005259 measurement Methods 0.000 claims 5
- 238000001514 detection method Methods 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 2
Description
第１図はこの考案の一実施例を示すブロツク線
図、第２図は従来の自己診断装置の一例を示すブ
ロツク線図である。
図面において、１は測定部、２は信号発生器、
３は検出器、４，５，６は抵抗、７，８，９は切
換スイツチ、１１は基準抵抗、１２はプログラマ
ブル利得増幅器、１３はＣＰＵ、１４は表示手段
である。
FIG. 1 is a block diagram showing an embodiment of this invention, and FIG. 2 is a block diagram showing an example of a conventional self-diagnosis device. In the drawings, 1 is a measuring section, 2 is a signal generator,
3 is a detector; 4, 5, and 6 are resistors; 7, 8, and 9 are changeover switches; 11 is a reference resistor; 12 is a programmable gain amplifier; 13 is a CPU; and 14 is a display means.
Claims (1)
、得られた応答信号を複数の入力レンジを備えた
検出手段で検出し、その出力を測定手段で計測す
る電気計測装置において、前記被測定体の接続部
に接続される１つの基準信号を発生する基準信号
発生手段と、前記各入力レンジに対応して予め設
定されたゲインで増幅するゲイン増幅器とを有し
、このゲイン増幅器は前記検出手段と前記測定手
段との間に接続されていることを特徴とする電気
計測装置の自己診断装置。 (2) 実用新案登録請求の範囲第１項において、
前記測定手段は基準信号発生手段からの出力レベ
ルが測定範囲となる前記入力レンジの場合はその
許容差を小さくし、それ以外の前記入力レンジの
場合はその許容差を大きくなるように予め設定さ
れた範囲で判定することを特徴とする電気計測装
置の自己診断装置。[Claims for Utility Model Registration] (1) A signal for measurement is applied from a signal source to an object to be measured, the obtained response signal is detected by a detection means equipped with a plurality of input ranges, and the output is sent to the measurement means. In an electrical measuring device for measuring, a reference signal generating means for generating one reference signal connected to a connection part of the object to be measured, and a gain amplifier for amplifying with a preset gain corresponding to each of the input ranges. A self-diagnosis device for an electrical measuring device, characterized in that the gain amplifier is connected between the detection means and the measurement means. (2) In paragraph 1 of the claims for utility model registration,
The measuring means is set in advance so that the output level from the reference signal generating means has a small tolerance when the input range is within the measurement range, and a large tolerance when the output level from the reference signal generating means falls within the measurement range. A self-diagnosis device for an electrical measuring device, characterized in that it makes a judgment within a certain range.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19721887U JPH0623981Y2 (en) | 1987-12-25 | 1987-12-25 | Self-diagnosis device for electrical measuring devices |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19721887U JPH0623981Y2 (en) | 1987-12-25 | 1987-12-25 | Self-diagnosis device for electrical measuring devices |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01102783U true JPH01102783U (en) | 1989-07-11 |
| JPH0623981Y2 JPH0623981Y2 (en) | 1994-06-22 |
Family
ID=31487784
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19721887U Expired - Lifetime JPH0623981Y2 (en) | 1987-12-25 | 1987-12-25 | Self-diagnosis device for electrical measuring devices |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0623981Y2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03200085A (en) * | 1989-12-28 | 1991-09-02 | Sharp Corp | Automatic calibrating system for digital measuring instrument |
| JP2014149282A (en) * | 2013-02-04 | 2014-08-21 | Horiba Advanced Techno Co Ltd | Conductivity measuring instrument and calibrating method therefor |
| CN114137323A (en) * | 2021-10-15 | 2022-03-04 | 国网山东省电力公司昌邑市供电公司 | Method and system for judging accuracy of measurement magnification file |
-
1987
- 1987-12-25 JP JP19721887U patent/JPH0623981Y2/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03200085A (en) * | 1989-12-28 | 1991-09-02 | Sharp Corp | Automatic calibrating system for digital measuring instrument |
| JP2014149282A (en) * | 2013-02-04 | 2014-08-21 | Horiba Advanced Techno Co Ltd | Conductivity measuring instrument and calibrating method therefor |
| CN114137323A (en) * | 2021-10-15 | 2022-03-04 | 国网山东省电力公司昌邑市供电公司 | Method and system for judging accuracy of measurement magnification file |
| CN114137323B (en) * | 2021-10-15 | 2024-02-20 | 国网山东省电力公司昌邑市供电公司 | Metering multiplying power file accuracy judging method and system |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0623981Y2 (en) | 1994-06-22 |
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