Intrinsically Safe Magnetic Level Indicator

Flameproof explosion-proof magnetic level gauges rely on thick shells to block sparks and can only be deployed in Zone 1 and Zone 2. In Zone 0 environments where flammable gas exists continuously all day, even tiny spark leakage risks will cause major safety hazards, so flameproof products cannot meet safety requirements.

Our Intrinsically Safe Magnetic Level Indicator adopts intrinsic safety energy-limiting circuit technology. The voltage, current and stored energy of matched transmitters and switches are strictly controlled within safe thresholds. No electric sparks or high-temperature hot surfaces will be generated whether in normal operation or circuit failure state, which fundamentally avoids explosion risks and can be safely used in Zone 0 hazardous areas.

Clear distinction against flameproof explosion-proof type:

• Flameproof explosion-proof: Contain sparks inside the housing, Zone 1/2 use only, high power output;
• Intrinsically safe: Limit circuit energy to prevent sparks fundamentally, suitable for Zone 0/1/2, low power consumption, must be used with safety barriers in control cabinets.

This product retains the pressure-resistant and anti-corrosion mechanical performance of standard magnetic level gauges, supports optional intrinsically safe transmitters and passive alarm switches, realizes local visual display + intrinsically safe remote signal transmission, and is the preferred liquid level instrument for high-safety hazardous working conditions.

• Full Range Ex Certification for Zone 0/1/2 Support IA intrinsic safety certification, applicable to Zone 0 dangerous areas with continuous flammable gas, higher safety grade than flameproof products.
• Source Spark-Free Safety Design Low-energy circuit structure never produces ignition sources even during short circuit or component damage, realizing true intrinsic safety.
• Dual Monitoring Function Bicolor magnetic flip plate for on-site reading; intrinsically safe transmitter outputs 4–20mA/HART signals to DCS system for remote centralized monitoring.
• Excellent Anti-Corrosion & High-Pressure Performance Optional 304SS, 316L, Titanium, Hastelloy C276, Inconel 625, 310S wetted parts, working range from vacuum to 16MPa, customized maximum design pressure up to 32MPa.
• Wide Temperature Adaptability Nylon aluminum flip plates (-40℃~150℃), all-metal high-temperature flip plates (-40℃~400℃), compatible with various high-temperature medium working conditions.
• Expandable Intrinsically Safe Modules Support intrinsically safe magnetic transmitter, magnetostrictive transmitter, differential pressure transmitter and limit switches to realize high/low liquid level interlock alarm.
• Multiple Installation Options Flange, welded and threaded installation modes, convenient for new tank installation and renovation of Zone 0 hazardous area storage tanks.

This intrinsically safe magnetic level indicator inherits the heavy-duty pressure-resistant cylinder structure and is equipped with certified intrinsically safe electronic accessories. It combines mechanical reliability, corrosion resistance and intrinsic safety design to realize safe liquid level measurement in continuously explosive Zone 0 environments. All technical parameters are listed below:

• Zone 0 Hazardous Storage Tanks Storage tanks for gasoline, liquefied hydrocarbons and volatile solvents with permanent flammable gas atmosphere.
• Fine Chemical & Pharmaceutical Production Lines Reaction kettles and solvent tanks storing flammable pharmaceutical intermediates, alcohols and esters.
• Offshore Oil & Gas Platforms Intrinsically safe liquid level monitoring for offshore processing vessels with strict safety codes.
• Lithium Battery New Energy Factories Level measurement of flammable electrolyte storage tanks inside battery workshops.
• Paint & Biochemical Factories Closed solvent tank level detection in workshops filled with volatile flammable vapor.

Q1: What is the core difference between intrinsically safe type and flameproof explosion-proof magnetic level gauge?

A: Intrinsically safe type: Limit circuit energy to prevent sparks fundamentally, usable for Zone 0/1/2, low power, safety barrier must be matched inside the control cabinet; Flameproof explosion-proof type: Adopt thick sealed enclosure to isolate internal sparks, only applicable for Zone 1/2, supports high-power transmitters, safety barriers are generally unnecessary.

Q2: Can intrinsically safe transmitters be mounted in Zone 0?

A: Yes. Our matched IA intrinsically safe accessories have complete certification and are allowed for Zone 0 areas with continuous combustible gas.

Q3: Does intrinsic safety design affect measuring accuracy?

A: No. Intrinsically safe transmitters are installed externally on the cylinder without touching internal floats. The mechanical magnetic flip measurement structure works independently and retains original precision.

Q4: Must the intrinsically safe system be equipped with safety barriers?

A: To meet standard intrinsic safety installation specifications, safety barriers must be installed on the control cabinet side of signal cables. We can provide matching safety barrier models upon demand.

Q5: Can this intrinsically safe gauge run at 400℃ high temperature?

A: Yes. Equipped with all-metal high-temperature flip assembly and heat insulation structure for electronic components, it supports intrinsically safe measurement under 400℃ high-temperature medium conditions.

Q6: Can ordinary magnetic level gauges be upgraded to intrinsically safe versions?

A: Yes. Replace common transmitters and junction boxes with certified intrinsically safe parts, there is no need to replace the main cylinder body of the level gauge.

Share your tank parameters, explosion grade and signal demands with us, we offer free customized technical proposals & factory pricing. Click the contact button to start your inquiry.

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