SU518740A1 - Conductometer - Google Patents

Description

(54) CONDUCT1

The invention is based on a co-conduct office.

Devices are known for measuring the concentration and the control of the composition of a solution by changing the conductivity

The main devices contain a high-frequency generator with a pingangg circuit, measurements, and a ferrite stern sensor with an ENDUITIEN sensor, an imbalance signal from the measuring circuit, and a variable frequency source.

The use of additional converters in known devices, UBELNCHY ™, measures the well-known devices. The complexity of these devices cxesvsj E reduces the stability of the device.

The purpose of the invention is to increase accuracy, stability: and hope, but measurement.

This is achieved by the fact that the keeper of the nitgan-sh generator is connected in series with a source of alternating voltage of a given frequency,

: The drawing shows a device.

Aeoy device consists of a geICOKOU frequency 1 meter2 with ICD;

More than 3, variable peaacTq30 sensitive-detector: G1 on the signal of the rebalance measure & : se; v: r; j with thermal resistor 7. blo | 8 with rectifier 9 and source-j

; th voltage of a given time i

i

. Scheme 2

n one of the shoulders of which is on-i

A sensor on the {ferrnt wiped out IiepBOifice taller j balancing of the measurement circuit is carried out with a variable pebKCTopi 4, a device in the other arm of the bridge,

: The nyrequiae of an electropower-controlled medium changes the equivalent iHoe resistance of an inductive sensor, | Which causes a transient frequency} load; The rabakance of the bridge in its measuring / gnoy diagonal. This voltage is detected by a phase-sensitive detector.