Reliable Quality Explosion Proof Electric Contact Pressure Gauge

Explosion Proof YX-160B Explosion-proof Electric Contact Pressure Gauge With Reliable Quality .

DATA SHEET / PRODUCT DESCRIPTIONS:

When there is an explosive hazardous environment (such as chemical industry, oil and gas, coal mine) and automatic control or alarm of the pressure system is required, an electric contact explosion-proof pressure gauge must be selected.

The selection of this instrument must meet the following two key conditions at the same time:

The environment has explosion risks: there are flammable and explosive gases, steam or dust in the workplace, such as chemical plants, oil and gas drilling sites, refineries, coal mines, etc.
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. Electric sparks generated by ordinary electric contact pressure gauges may cause explosions, so equipment with explosion-proof qualifications (such as ExdⅡB/ⅡC level) must be used.
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Need automatic control or alarm: not only pressure measurement, but also electrical contacts and relays, contactors and other electrical devices are required to achieve automatic pressure control, over-limit alarm or interlock shutdown
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Key indicators for selection
To ensure safety and compliance, you need to focus on:

Explosion-proof qualification: Must have a valid explosion-proof certificate issued by an authoritative organization, and the level must match the on-site working conditions (such as ExdⅡCT6 is suitable for higher risk environments)
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Material adaptation: Select the wetted material according to the corrosiveness of the medium. For strongly corrosive media, 316L stainless steel or PTFE lining should be used to avoid instrument failure.
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Range and accuracy: Normal working pressure should be between 1/3 and 2/3 of the instrument range. For general industrial control, 1.6-level accuracy can be selected.

The selection of explosion-proof electric contact pressure gauges must follow the four core principles of "priority in compliance qualifications, material adaptation to working conditions, accurate range matching, and reliable functional interlocking" to ensure safe operation in flammable and explosive environments and pass safety inspection acceptance.

Core selection principles
Compliance and explosion-proof qualifications are a prerequisite
Products with a valid explosion-proof certificate issued by an authoritative organization must be selected, and the explosion-proof grade (such as ExdⅡBT4, ExdⅡCT6, etc.) must strictly match the on-site hazardous area division. Products without compliance qualifications cannot pass safety supervision inspection and have major safety hazards
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Material adaptation media properties
Select the wetted material according to the corrosiveness of the medium being measured: 304 stainless steel can be selected for ordinary media, and 316L stainless steel or PTFE lining should be used for highly corrosive media; the case material should be cast aluminum or stainless steel according to the environment to ensure long-term stable operation.

Accurate matching of measuring range and accuracy

Range selection: Normal working pressure should be between 1/3 and 2/3 of the instrument range to avoid insufficient accuracy caused by too large a range or overload damage caused by too small a range.
The accuracy level is 1.6 for general industrial control scenarios, and 0.4 or higher for high-precision requirements.
Function and installation adaptation site

Contact type: Confirm the matching of normally open/normally closed contacts and control loops, support dual or triple control of upper and lower limits, and can be interlocked with PLC/DCS systems
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Installation method: Choose radial or axial installation methods based on the space. For environments with large vibrations, it is recommended to use vibration-resistant types or fill with damping fluid.

The electric contact pressure gauge needs to be installed vertically. When measuring stable pressure, use 3/4 of the range, and when measuring alternating pressure, use 2/3. The contacts must be regularly calibrated and kept clean.

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