YX-160B Explosion proof Electric Contact Pressure Gauge

NegotiableUpdate on 12/18

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Nature of the Manufacturer: Producers

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Place of Origin

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Overview

Product Model: YX-160B Theme Features: Manufacturer: Hongqi Instrument Co., Ltd

Product Details

Product Overview

The YX-160B explosion-proof electric contact pressure gauge is suitable for measuring the pressure of non crystalline, non solidified explosive mixtures or various non explosive media in places with explosive hazards. Instruments can be used in conjunction with electrical components (such as relays and contactors) with corresponding explosion-proof properties or safety measures to achieve automatic control and signaling (alarm) of the controlled system.The explosion-proof category of the instrument is Class II explosion-proof type B level T4 group, with the symbol Exd Ⅱ BT4.

technical indicators

Accuracy level: 1.5

Scale range: 0-0.16; 0~0.25； 0～0.4； 0～0.6； 0～1； 0～1.6； 0~2.5； 0～4； 0～6； 0～10； 0～16； 0～25； 0～40； 0~60； -0.1～0.06； -0.1～0.15； -0.1～0.3； -0.1～0.5； -0.1~0.9； -0.1～1.5； -0.1～2.4MPa -0.2-3.6MPA

Control mode: upper and lower limit slow contact switch

Maximum operating voltage: DC 220V or AC 380V;

Contact power: 10VA

Working position: Vertical installation

Environmental conditions for use: -10~50 ℃, relative humidity not exceeding 80%, and explosive mixtures should belong to Class IIB T4 or below. The working vibration and rapid pulsation of the measured medium should not affect the reliable operation of the instrument contacts.

Temperature effect: The displayed value should not exceed 0.4%/10 ℃, and the set point should not exceed 0.6%/10 ℃ (with a temperature deviation of 20 ± 5 ℃).

Insulation strength: 50Hz sine AC 2000V for one minute

Weight: 6kg

Types and basic parameters of explosion-proof joint surfaces

Shell volumeV(L)	＞0.5
Joint surface type	plane	cylinder(Movable part)
Minimum effective length of explosion-proof joint surfaceL(mm)	15
Minimum effective length from the edge of the screw through-hole to the explosion-proof joint surfaceL1	8
Maximum gap or diameter difference of explosion-proof joint surfaceW(mm)	0.15
Surface roughness of explosion-proof joint surfaceRa	3.2	1.6

Note: An example of the effective length and gap width of the explosion-proof joint surface can be found in the schematic diagram of the explosion-proof shell structure.

Explosion proof shell and pressure guiding system components and materials

Part Name	Material grade or name	Part Name	Material grade or name
Drive shell outlet box	ZL102 (orZL-102，ZL-101)
joint	20
bushing	QAJ9-2	Bourdon tube	3J53
window glass	Tempered glass

Note: The material of the observation window has an impact resistance strength of not less than4JOnce the observation window is damaged, it cannot be used.

structural principle

The instrument consists of an explosion-proof shell, a measurement system, an electrical contact group, a regulating device, and an outlet box.The explosion-proof shell of the instrument has good explosion-proof performance, so it can not only withstand the explosive pressure generated by the explosive gas mixture inside the shell in the event of an explosion due to the influence of sparks or arcs during normal operation, but also effectively prevent the heat energy generated from spreading smoothly outward, and can only slowly diffuse outward along the small gaps of the explosion-proof joint surface inside the shell. At this point, the instantaneous temperature transmitted to the outside of the shell has dropped below the ignition temperature of the explosive gas mixture, so it will not cause detonation.

The working principle of the instrument is based on the elastic deformation of the detection element (spring tube in the measurement system), which drives the contacts in the electrical contact group to produce corresponding actions (closing or opening) through mechanical transmission, so as to connect or disconnect the circuit in the voltage control system, thereby achieving the purpose of automatic control alarm and on-site indication.