Device for measuring pH and temperature of a liquid, which inclu

Details Device for measuring pH and temperature of a liquid, which inclu Device for measuring pH and temperature of a liquid, which inclu

1976-10-26

1978-08-29

Ruehl, Charles A.

Measuring and testing

Gas analysis

Moisture content or vapor pressure

73344, G01K 102

Patent

active

041095278

ABSTRACT:
Disclosed is a portable electronic probe device, including a memory system, which is useful for measuring the pH and temperature of a liquid. The pH sensor consists of a glass electrode-reference electrode combination. The temperature sensor is made up of a thermistor fitted into a well enclosure at the bottom of the probe. A display box attached to the probe contains a memory system. The pH and temperature value is received by the memory system as an electrical signal. The signals are amplified, converted from analog to digital data, and stored in a digital memory.
The pH and temperature data, and the precise location at which the measurement is taken, appear continuously as digital displays in a transparent panel on the display box. When the memory is full the probe device is placed in a charger stand to re-charge a battery in the memory system by a magnetic "coupling" sequence. At the same time, the data in the memory is clocked into a computer-recorder associated with the charger stand, using an optical "coupling" technique. In this device the memory system can record and store pH and temperature data from up to 192 locations before it becomes full.

REFERENCES:
patent: 3272012 (1966-09-01), Seney
patent: 3880007 (1975-04-01), Emschermann et al.
patent: 3946364 (1976-03-01), Codomo et al.
patent: 3970074 (1976-07-01), Mogos et al.

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