The Model 306 Ozone Calibration Source™ (OCS) is a powerful, portable device designed to bring precision to the calibration of ozone monitors. Unlike many calibration tools, the Model 306 isn’t limited to calibrating only specific brands of ozone monitors. It’s a universal calibration source that can support almost any ozone monitor, offering reliable and adjustable ozone levels from 30 to 1,000 ppbv. This flexibility makes it an ideal solution for labs, fieldwork, and any situation where precise ozone monitoring is essential.
Key Features of the Model 306 Ozone Calibration Source™
The Model 306 OCS is designed with usability and versatility in mind. By scrubbing ozone from ambient air, it creates an ozone output at a chosen concentration, all controlled via a user-friendly menu with a rotary switch or remotely via serial communication. Here are some standout features:
- Customizable Ozone Levels: Choose any ozone mixing ratio between 30 to 1,000 ppbv. Adjusting the concentration is simple through the intuitive rotary menu or the serial interface for remote control.
- Stable Output Flow: The Model 306 outputs ozone at a steady flow rate of 3.0 L/min. This rate is unaffected by ambient temperature, pressure, or humidity, ensuring consistent results in varied environments.
- Efficient Connection: The output can connect directly to any ozone monitor’s inlet, with excess flow vented through an internal ozone scrubber, making calibration seamless and efficient.
- Calibrated Precision: The Model 306 is calibrated against a NIST-traceable standard but allows user adjustments for those who wish to customize the calibration relative to a lab standard or another reference instrument.
- Automatic Calibration Scheduling: A daily autocalibration scheduler allows the user to set up to 10 output steps, automating the calibration process to save time and maintain accuracy over long periods.
How Does the Model 306 Produce Ozone?
The Model 306 OCS generates ozone through UV photolysis of oxygen (O₂) at a wavelength of 185 nm. This method is well-regarded for its reliability and precision, especially in lab and field settings.
Applications of the Model 306 Ozone Calibration Source™
The Model 306 is highly versatile and can be employed in a wide range of applications where calibrated ozone concentrations are essential. Some typical uses include:
- Field Calibration of Ozone Monitors: This portable transfer standard is ideal for calibrating networks of ozone monitors, especially in remote or challenging locations.
- Material Testing: The controlled ozone output is perfect for exposing materials like rubber, plastic, and paint to ozone, allowing researchers to study the effects of ozone exposure over time.
- Agricultural and Botanical Research: When studying ozone’s effects on plants, a consistent, calibrated source of ozone is critical to ensure reliable experimental conditions.
Model 306 Specifications
- Method of Ozone Production: UV photolysis at 185 nm
- Ozone Concentration Range: 0, and from 30 to 1,000 ppbv
- Precision & Accuracy: Greater of 2 ppbv or 2% of the ozone concentration
- Response Time: 30 seconds to reach 95% of a concentration change
- Flow Rate: 3.0 L/min volumetric
- Power Requirements: 12 V DC or 120/240 V AC, 18 watts
- Size: 3.5 x 8.5 x 11 inches (9 x 21 x 29 cm)
- Weight: 5.6 lbs. (2.6 kg)
- Autocalibration Scheduler: Yes; features a once-daily autocalibration function with programmable steps
Compact, Rugged Design
The Model 306 OCS shares the same durable, compact design as the Model 202 and Model 205 ozone monitors, with a convenient size (3.5 x 8.5 x 11 inches) and a lightweight frame (5.6 lbs). This portable design ensures easy transport and deployment in both laboratory and field environments.
In summary, the Model 306 Ozone Calibration Source™ is a versatile, precise, and highly reliable tool for anyone needing accurate ozone calibration capabilities. From environmental monitoring and industrial testing to agricultural research, the Model 306 offers the precision and ease of use needed to maintain consistent and accurate ozone measurements.
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