Published May 1981
| Version v1
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Development of conductivity probe and temperature probe for in-situ measurements in hydrological studies
Description
A conductivity probe and a temperature probe have been developed for in-situ measurements in various hydrological field studies. The conductivity probe has platinum electrodes and is powered with two 12 volt batteries. The sensing element of the temperature probe consists of a resistor of high coefficient of temperature. Response of the conductivity probe is measured in a milliampere mater while the resistance of the thermistor is read by a digital meter. The values of conductivity and temperature are derived from respective calibration. The probes are prototype and their range of measurement can be improved depending upon the requirement of the field problem. (Author)
Availability note (English)
MF available from INIS under the Report Number.Abstract (Portuguese)
Desenvolveram-se uma sonda de condutividade e outra de temperatura para medicoes in-situ, nos varios estudos hidrologicos de campo. A sonda de condutividade tem eletrodos de platina e e alimentada por duas baterias de 12 Volts. O elemento-sensor da sonda de temperatura consiste em um resistor de alto coeficiente de temperatura (NTC). A resposta da sonda de condutividade e medida com um miliamperimetro, enquanto a resistencia do termistor e indicada por um meter digital. Os valores de condutividade e temperatura sao deduzidos da calibracao respectiva. As sondas sao prototipos e seu intervalo de medicao pode ser melhorado, dependendo dos requerimentos do problema de campo. (Autor)Files
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Additional details
Publishing Information
- Imprint Pagination
- 14 p.
- Report number
- IPEN-PUB--27
INIS
- Country of Publication
- Brazil
- Country of Input or Organization
- Brazil
- INIS RN
- 13702413
- Subject category
- S58: GEOSCIENCES;
- Resource subtype / Literary indicator
- Numerical Data
- Descriptors DEI
- CALIBRATION; ELECTRIC CONDUCTIVITY; EXPERIMENTAL DATA; HYDROLOGY; PROBES; TEMPERATURE MEASUREMENT; THERMISTORS
- Descriptors DEC
- DATA; ELECTRICAL PROPERTIES; INFORMATION; NUMERICAL DATA; PHYSICAL PROPERTIES; SEMICONDUCTOR DEVICES