RU8473U1 - DEVICE FOR MEASURING VIBRATION IN EXPLOSIVE ZONES - Google Patents

Abstract

A device for measuring vibration in hazardous areas, containing a primary Converter, a preamplifier, the output of which is connected to one input of the switch, the output of which is connected to an amplifier, characterized in that it further comprises a calibration voltage source, a separation element, providing galvanic isolation, spark protection unit, and the primary the converter is connected to a separation element connected through the spark protection unit to the preamplifier, the output of the calibration voltage source is connected nen to another input of the switch control input coupled to a remote control system.

Description

DEVICE FOR MEASURING VIBRATION IN EXPLOSIVE ZONES The utility model relates to vibro-modern equipment and may be

used in measuring parameters of broadband vibration and diagnosing aggregate defects.

A device for controlling vibration 1, comprising a vibration converter; Power Supply; a measuring unit consisting of an amplifier, a filter, a device for obtaining a rms-square value of vibration velocity, an indicator device.

As a prototype of the utility model, vibration meter 2 was selected, which contains 10 measuring transducers of channels, the outputs of which are connected through preamplifiers to one corresponding input of the channel switch, the output of which is connected to an amplifier, it is possible to connect external filters and external recording and analyzing devices.

The disadvantage of analogue and prototype is the lack of calibration of the measuring path.

The utility model is aimed at creating a vibration meter for working day in hazardous areas with the possibility of remote calibration of the measuring path by an internal calibrator.

Technological solution: The advantage of using MODBLI is to increase the reliability and accuracy of measurements, increase the verification interval, expand the field of application (the possibility of use in explosive rooms).

MPKb G01 N / A

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A device is proposed for measuring vibration in hazardous areas containing, a primary converter, a preamplifier, the output of which is connected to one input of the switch. The output of the switch is connected to an amplifier.

Distinctive from the prototype are the following features:

The device further comprises a calibration voltage source, a separation element providing galvanic isolation, an intrinsic protection unit, the primary converter being connected to an isolation element connected via a non-protection unit to a preamplifier, the output of the calibration voltage source is connected to another input of the switch. The control input of the switch is connected to a remote control system.

The implementation of the device for measuring vibration using all the features of the claimed device allows the calibration of the measuring path by introducing a source of calibration voltage, which in turn provides an increase in the reliability of measurements, as well as by introducing galvanic isolation and the protection block, it can be used in hazardous areas.

The utility model is illustrated by a figure, which shows a structural diagram of the device.

The device comprises a primary converter 1, a preamplifier 2, the output of which is connected to a single input of the switch 3. The output of the switch 3 is connected to an amplifier 4. The device additionally contains a dividing element 5, which provides galvanic isolation, isolation unit b,

source of calibration voltage 7. Primary Converter 1

connected to the other input of the switch 3. The control input of the switch 3 is connected to the remote control system (not shown in FIG.).

As a separation element 5, which disables galvanic isolation, isolation transformers, optoelectronic and similar devices 3 can be used.

As a spark protection unit 6, electrical circuit elements that meet the requirements of GOST 22782.5-78 4 can be used.

In this case, an isolation transformer was used as a disconnect element 5, the design of which meets the requirements of GOST 22782.5-78 5, and as a protection block, a chain of series-connected resistors and pre-defenses and shunt zener diodes 6.

The device operates as follows:

in the mode of measuring the vibration velocity, the voltage from the primary transducer 1, proportional to the vibration velocity, through the separation element 5, the spark protection unit 6, the amplifier 2 and the switch 3 is supplied to the amplifier 4, which produces an amplified voltage to a normalized level and a signal is output to the output line.

- in the calibration mode, a switch 3 receives a signal from the remote control system connecting a calibration voltage source 7 to the input of the amplifier 4. The calibration voltage of the amplifier 4 is amplified to a well-known well-known value and is output to the output line.

A device for measuring vibrations in hazardous areas is used in vibration velocity sensors.

The device, which uses a device for measuring vibration in hazardous areas, has great accuracy and reliability of measuring vibration velocity, a large muffling interval.

LITERATURE

1. GOST 25275-82 (art. CMEA 3173-81), p. 1.

2. Reference book under the editorship of V.V. Klyueva Instruments and systems of the day for measuring vibration, noise and shock, M., Mashiiostroyeyie, 1978, x.1, p. 400, Fig. 12.

3.GOST22782.5-78 (STSEV 3143-81), p. 12.

4.GOST22782.5-78 (STSEV 3143-81), p. 9.

5.GOST22782.5-78 (STSEV 3143-81). p. 13.

6.GOST 22782.5-78 (ST SEV 3143-81), p. 32

Claims (1)

A device for measuring vibration in hazardous areas, comprising a primary converter, a preamplifier, the output of which is connected to one input of the switch, the output of which is connected to an amplifier, characterized in that it further comprises a calibration voltage source, a separation element that provides galvanic isolation, an intrinsic protection unit, the primary the converter is connected to a separation element connected through the spark protection unit to the preamplifier, the output of the calibration voltage source is connected nen to another input of the switch control input coupled to a remote control system.