Fast deep sea temperature measuring thermistor

A thermistor, varistor technology, used in resistors with negative temperature coefficients, measuring heat, thermometers with electrical/magnetic components directly sensitive to heat, etc.

Inactive Publication Date: 2002-07-10
XINJIANG TECHN INST OF PHYSICS & CHEM CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no sensitive component that can measure te

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] First, weigh the three metal oxides of cobalt trioxide, manganese dioxide and nickel trioxide according to the ratio of metal atomic percentage cobalt: manganese: nickel = 30:40:30, mix and grind for 24 hours, and use platinum wire as the inner Electrode lead wire, spot-made sensitive body bead green body (bead body diameter after sintering <0.3 mm), bead green body is sintered at 1150 ° C in air for 1 hour;

[0013] Coat the surface of the sintered miniature sensitive body beads with a glass glaze layer, then age at 120°C for 200 hours, and then weld the platinum wire of the beads to the thin enamelled parallel wires;

Embodiment 2

[0015] First, weigh the three metal oxides of cobalt trioxide, manganese dioxide and nickel trioxide according to the ratio of metal atomic percentage cobalt: manganese: nickel = 40:40:20, mix and grind for 20 hours, and use platinum wire as the inner Electrode lead wire, spot-made sensitive body bead green body (bead body diameter after sintering <0.3 mm), bead green body is sintered at 1200 ° C in air for 45 minutes;

[0016] The sintered miniature sensitive body beads are spot-welded with Dumet wire leads with platinum wire, and then sealed in a glass rod with a thin glass layer on the surface of the miniature sensitive body at one end, and subjected to twice aging, aging at 240°C for 200 hours , Aged at 120°C for 200 hours.

Embodiment 3

[0018] First, weigh the three metal oxides of cobalt trioxide, manganese dioxide and nickel trioxide according to the ratio of metal atomic percentage cobalt: manganese: nickel = 50:40:10, mix and grind for 30 hours, and use platinum wire as the inner Electrode lead wire, spot-made sensitive body bead green body (bead body diameter after sintering <0.3 mm), bead green body is sintered at 1100 ° C in air for 0.5 hours;

[0019] Coat the surface of the sintered miniature sensitive body beads with a glass glaze layer, then age at 100°C for 100 hours, and then weld the platinum wire of the beads to the thin enamelled parallel wires;

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PUM

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Abstract

The present invention relates to a high stability thermistor capable of being used in fast temperature measurement of deep sea up to 3000 m. The thermistor prepared by using the oxides of Co, Mn and Ni and through compounding, grinding, dropping to form bead, sintering, painting and baking glass glaze, welding, soldering glass rod and aging. Test shows it has time constant of 20-50 ms in sea water, deep sea pressure resistance over 30 MPa and stability up to 0.001 deg.c per month.

Description

technical field [0001] The invention relates to a high-stability thermistor capable of rapid temperature measurement in 3000-meter deep sea with negative temperature coefficient Background technique [0002] Accurate and rapid temperature measurement of deep-sea water below 3000 meters is a very difficult technical problem, because components measured in deep-sea water below 3000 meters not only have to withstand the huge pressure generated by deep-sea water, but also have to generate The "pressure effect" in which pressure causes a change in the properties of the measuring cell. At present, there is no sensitive component that can measure temperature quickly and accurately in deep sea with high stability. According to the characteristics and requirements of deep seawater, the present invention develops a high-stability thermistor with a negative temperature coefficient that can quickly measure temperature in 3000-meter deep seawater through years of r...

Claims

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Application Information

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IPC IPC(8): G01K7/22H01C7/04
Inventor 妥万禄王伟王燕
Owner XINJIANG TECHN INST OF PHYSICS & CHEM CHINESE ACAD OF SCI
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