SU781643A1 - Apparatus for dynamic calibrating of pressure sensors - Google Patents

Description

(54) DEVICE FOR DYNAMIC CALIBRATION OF PRESSURE SENSORS

one

The invention relates to safety engineering, in particular to devices for calibrating pressure sensors.

A device for testing pressure sensors is known, in which a 5 pressure pulse is obtained by cutting a conductive element placed in a liquid and with a spiral shape l.

However, the device does not provide for obtaining pressure pulses of sufficiently high amplitude.

The closest in technical essence and the achieved result to the proposed is device 5 for dynamic calibration of pressure sensors, containing a chamber filled with a working body, in which a calibration signal source is installed, made in the form of electrodes, 20 switched on in a capacitor bank circuit, a reference holder and calibrated sensors and sensor signal recorder 2.

However, the device does not provide 25 wide calibration ranges.

The purpose of the invention is the extension of the calibration range.

The goal is achieved by the fact that in the device for dynamic

Calibration of pressure sensors, containing a chamber filled with working fluid, in which the source of the calibration signal is installed, is made as electrodes connected to a circuit of a capacitor block, when pressure is applied to the sensor signal recorder, the camera is elliptical, in one focus the source of the calibration signal, and in another focus, the pressure receiver, made in the form of a sphere, with a tube, is rigid. mounted on the housing for connection with the reference and calibrated sensors. pressure pressure.

The structural scheme of the device shown in the drawing.

The device comprises a housing 1, a source 2 of a calibration signal, a holder 3 of reference and calibrated sensors, a recorder of 4 signals taken from the sensors, a camera 5, a filling-drain connection b, the first focus 7

Ellipsoidal chamber 5, second focus Ellipsoid chamber 5, pressure receiver 9, tube 10, reference 11 and tarey 12 pressure sensors, capacitor tube 13, voltage regulator 14, charging circuit 15 and INPUTS 16 of capacitor unit 13.

Claims (1)

Claim A device for dynamic calibration of pressure sensors, comprising a chamber filled with a working fluid, in which a calibration signal source is installed, made in the form of electrodes included in the capacitor block circuit, a pressure receiver and a sensor signals recorder, characterized in that, in order to expand the calibration range, the camera is made ellipsoidal, in one focus of which a calibration signal source is placed, and in the other focus is a pressure receiver, made in the form of a sphere, with a tube rigidly fixed to the body ce, for connection with reference and tared pressure sensors.