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O₃ MEZUS 410 Analyzer

O₃ MEZUS 410 Analyzer

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Designed for the precise detection of tropospheric ozone, the MEZUS 410 operates on the principle of UV absorption at 254 nm (Beer-Lambert Law). This equipment stands out for its operational simplicity and high stability, making it a key component for the analysis of photochemical pollutants in environmental monitoring networks.

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O₃ MEZUS 410 Analyzer 

TheMEZUS 410is a reference gas analyzer designed to measure minimal concentrations of Ozone (O₃) in ambient air using the method ofUltraviolet (UV) Absorption Photometry.. This equipment has theUS EPA Certification (EQOA-0219-251), which validates its accuracy for regulatory compliance. Its design incorporates a high-efficiency ozone scrubber and sample tubes with special coatings to prevent ozone loss due to adsorption. Managed by a 32-bit ARM11 processor and Linux, it offers stable and multitasking operation for demanding monitoring networks.

Why choose the MEZUS 410?

  • Certification and Accuracy:Backed by the US EPA, it guarantees valid data for environmental reporting. Its lower detection limit is< 0.5 ppb, ideal for tracking background levels and photochemical peaks.

  • Sample Integrity:It uses special materials and coatings in the pneumatic train to prevent premature decomposition of ozone before measurement, ensuring that the displayed data is real.

  • Operational Stability:The automatic zero correction system (Auto Zero) and pressure and temperature compensation maintain the accuracy of the equipment without the need for constant manual interventions.

Features:

  • Measurement Method:Ultraviolet Photometry (UV Absorption).

  • Selectable Ranges:0 - 0.1 / 0.5 / 1 ppm (Configurable).

  • Response Time:Less than 50 seconds (T95).

  • Linearity and Repeatability:±1% of full scale.

  • Accuracy:0.5% of reading or 1 ppb.

  • Sample Flow:Stabilized control through a critical orifice of 800 cc/min.

  • Interface and Communications:7-inch TFT-LCD touchscreen with Ethernet, USB 2.0, and RS-232/485 ports.

  • Storage:Internal memory for 1 year of data and operation logs.

ParameterTechnical Specification
Measurement PrincipleUV Photometry (UV Absorption Method)
Measurement Ranges0-0.1 / 0-0.5 / 0-1 ppm (Selectable)
Detection Limit (LDL)Less than 0.5 ppb
RepeatabilityWithin ±1% of gas span concentration
Zero DriftLess than 1 ppb
Span DriftWithin ±1% of full scale (1 day)
Response Time (T95)Less than 50 seconds
LinearityWithin ±1% of full scale
Accuracy0.5% of reading or 1 ppb
Operating Temperature0°C to 40°C
Analog Output0-1V / 0-5V or 4-20mA (Optional)
Sample FlowStabilized control (800 cc/min) through critical orifice
Particle Filter47 mm Teflon Filter
Display7-inch Graphic LCD (Touchscreen)
Communication PortsEthernet, USB 2.0, RS-232
Internal StorageMeasurement data (5 min / 1 year), History, Alerts
Power Supply110VAC/60Hz or 220VAC/50Hz

What function does the "Scrubber" serve in this equipment? 

The MEZUS 410 operates by comparing the UV light absorption of the direct air sample against a reference sample without ozone. The "Scrubber" is a high-efficiency chemical cartridge responsible for removing ozone to generate that zero reference. Its good condition is vital for the accuracy of the equipment.

Does the equipment comply with international regulations? 

Yes, the MEZUS 410 has the official certification from theUS EPA (Designation EQOA-0219-251)as an Automated Equivalent Method. This means it is legally accepted for air quality compliance reporting in most countries that follow EPA or ISO standards.

Is it sensitive to temperature changes in the enclosure? 

The equipment is designed to operate between 0 and 40°C, but it has internal sensors that mathematically compensate the readings for variations in pressure and ambient temperature. Additionally, its optical bench is thermally insulated to minimize physical drifts.