GB1174982A - Method and Device for Calibrating Analysis Apparatus - Google Patents
Method and Device for Calibrating Analysis ApparatusInfo
- Publication number
- GB1174982A GB1174982A GB1064867A GB1064867A GB1174982A GB 1174982 A GB1174982 A GB 1174982A GB 1064867 A GB1064867 A GB 1064867A GB 1064867 A GB1064867 A GB 1064867A GB 1174982 A GB1174982 A GB 1174982A
- Authority
- GB
- United Kingdom
- Prior art keywords
- analyzer
- output
- potentiometer
- difference
- amplifier
- 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.)
- Expired
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D18/00—Testing or calibrating apparatus or arrangements provided for in groups G01D1/00 - G01D15/00
- G01D18/002—Automatic recalibration
- G01D18/006—Intermittent recalibration
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D18/00—Testing or calibrating apparatus or arrangements provided for in groups G01D1/00 - G01D15/00
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0006—Calibrating gas analysers
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Medicinal Chemistry (AREA)
- Food Science & Technology (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Combustion & Propulsion (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Sampling And Sample Adjustment (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
1,174,982. Calibrating infrared analyzers. INSTITUT DE RECHERCHES DE LA SIDERURGIE FRANCAISE. March 7, 1967 [April 1, 1966], No.10648/67. Heading G1A. [Also in Division G4] Apparatus for calibrating an automatic analyzer comprises means for passing a first reference substance having a composition near the bottom of the analyzer scale through the analyzer, means for comparing the output of the analyzer with a fixed reference value and adding a voltage to the analyzer output so as to neutralize the difference, means for passing a second reference substance having a composition near the top of the analyzer scale through the analyzer and means for comparing the analyzer output with a second fixed reference value and multiplying the analyzer output by a factor such that the difference is neutralized. In an infrared gas analyzer the test gas is periodically cut off by a valve 4, Fig. 1, and replaced by a first reference gas. The analyzer output which is fed through an adjustable potentiometer 14 and an adjustable bridge circuit 15, 16 to a recorder 10 is compared in a differential amplifier 19 with a first reference value set on a potentiometer 20. The difference output from amplifier 19 is fed to a motor 24 which adjusts the potentiometer 15 and so adds a voltage to the analyzer output so as to reduce the difference between the inputs to amplifier 19 to zero. Valve 5 then switches over to admit a second reference substance to the analyzer and the output is this time compared with a second reference value set on potentiometer 21. The difference output of amplifier 19 is now connected to a motor 25 which adjusts the potentiometer 14. The switching of the valves 4 and 5 and the relays 51 and 46 are controlled by a motor operated cam circuit, Fig. 2 (not shown). In a modification Fig.3 (not shown) the potentiometers 14 and 15 are replaced by a plurality of fixed resistors in series, appropriate combinations of which are selected by counters which are operated until the output of amplifier 19 is reduced to zero.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR55982A FR1485608A (en) | 1966-04-01 | 1966-04-01 | Method for calibrating analysis apparatus and implementation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1174982A true GB1174982A (en) | 1969-12-17 |
Family
ID=8605284
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1064867A Expired GB1174982A (en) | 1966-04-01 | 1967-03-07 | Method and Device for Calibrating Analysis Apparatus |
Country Status (4)
| Country | Link |
|---|---|
| BE (1) | BE695782A (en) |
| DE (1) | DE1598646A1 (en) |
| FR (1) | FR1485608A (en) |
| GB (1) | GB1174982A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0036280A1 (en) * | 1980-03-10 | 1981-09-23 | Merrill Engineering Laboratories, Inc. | Calibration fault detector and automatic calibrator |
| EP0049345A2 (en) * | 1980-10-08 | 1982-04-14 | Auergesellschaft Gmbh | Apparatus and arrangement for calibrating a gas analysis plant |
| GB2183334A (en) * | 1985-11-20 | 1987-06-03 | Pitcraft Summit Ltd | Gas detector and mining machine |
| GB2204684A (en) * | 1987-05-08 | 1988-11-16 | Mine Safety Appliances Co | Infrared fluid analyzer |
| CN104729557A (en) * | 2013-12-23 | 2015-06-24 | 罗斯蒙特公司 | Analog process variable transmitter with electronic calibration |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3742196A (en) * | 1971-09-09 | 1973-06-26 | American Monitor Corp | Method and electronic control for the analyzation of serum chemistries |
| DE2915557A1 (en) * | 1978-04-20 | 1979-10-31 | Micro Sensors Inc | CAPACITIVE MEASURING SYSTEM WITH AUTOMATIC CALIBRATION DEVICE |
-
1966
- 1966-04-01 FR FR55982A patent/FR1485608A/en not_active Expired
-
1967
- 1967-03-07 GB GB1064867A patent/GB1174982A/en not_active Expired
- 1967-03-20 BE BE695782D patent/BE695782A/xx unknown
- 1967-03-31 DE DE19671598646 patent/DE1598646A1/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0036280A1 (en) * | 1980-03-10 | 1981-09-23 | Merrill Engineering Laboratories, Inc. | Calibration fault detector and automatic calibrator |
| EP0049345A2 (en) * | 1980-10-08 | 1982-04-14 | Auergesellschaft Gmbh | Apparatus and arrangement for calibrating a gas analysis plant |
| EP0049345A3 (en) * | 1980-10-08 | 1984-04-25 | Auergesellschaft Gmbh | Apparatus and arrangement for calibrating a gas analysis plant |
| GB2183334A (en) * | 1985-11-20 | 1987-06-03 | Pitcraft Summit Ltd | Gas detector and mining machine |
| GB2183334B (en) * | 1985-11-20 | 1989-10-04 | Pitcraft Summit Ltd | Gas detector and mining machine |
| GB2204684A (en) * | 1987-05-08 | 1988-11-16 | Mine Safety Appliances Co | Infrared fluid analyzer |
| GB2204684B (en) * | 1987-05-08 | 1992-01-29 | Mine Safety Appliances Co | Infrared fluid analyser |
| CN104729557A (en) * | 2013-12-23 | 2015-06-24 | 罗斯蒙特公司 | Analog process variable transmitter with electronic calibration |
| WO2015099847A1 (en) * | 2013-12-23 | 2015-07-02 | Rosemount Inc. | Analog process variable transmitter with electronic calibration |
| CN111982180A (en) * | 2013-12-23 | 2020-11-24 | 罗斯蒙特公司 | Analog process variable transmitter with electronic calibration |
| US10962622B2 (en) | 2013-12-23 | 2021-03-30 | Rosemount Inc. | Analog process variable transmitter with electronic calibration |
Also Published As
| Publication number | Publication date |
|---|---|
| BE695782A (en) | 1967-09-01 |
| FR1485608A (en) | 1967-06-23 |
| DE1598646A1 (en) | 1971-04-01 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PLNP | Patent lapsed through nonpayment of renewal fees |