Model 108-L Ozone Monitor™
For Industrial Ozone Applications and Integration into Existing Ozone Systems
Federal Equivalent Method (FEM)
The Model 108-L provides accurate measurements of ozone in air over a wide dynamic range extending from a few parts-per-billion by volume (ppb) to an upper limit of 100 parts-per-million (ppm) based on the well-established technique of absorption of ultraviolet light at 254 nm. The Model 108-L is designed for integration in the user’s ozone system and makes use of the ozone system’s pump to supply the air sample. The Model 108-L Ozone Monitor is lightweight (2.0 lb, 0.89 kg), has a low power consumption (~2 watt) relative to conventional instruments, and requires minimal maintenance, making it well suited for monitoring of ambient ozone and monitoring/control of ozone in industrial settings. The Model 108-L is ideal for the following applications:
- Replacement of HMOS and Electrochemical sensors in an existing ozone system
- Monitoring ozone exposure of individuals in the workplace
- Monitoring and control of ozone in industrial settings
- Incorporation into ozone disinfection systems (see our Application Note below)
- Long-term monitoring at remote locations where power is highly limited (See our Application Note below)
The 2B Technologies Model 108-L Ozone Monitor has been approved by the U.S. Environmental Protection Agency as a modification of Federal Equivalent Method (FEM): EQOA-0914-218. As a designated FEM, the Model 108-L Ozone Monitor may be used by states and other monitoring agencies under 40 CFR Part 58, Ambient Air Quality Surveillance, for monitoring for compliance with the Clean Air Act.
In optional configurations, the Model 108-L is also available in an enclosure with a miniature air pump, or in our AQLite package for ambient air monitoring. Please contact us to discuss the best configuration for your application.
Standard 108-L
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108-L with Enclosure and Pump
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108-L in the AQLite Package for Ambient Air Monitoring
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Specifications
| Measurement Principle | UV Absorption at 254 nm, single beam |
| Federal Equivalent Method (FEM) | Yes, modification to EQOA-0914-218 |
| Linear Dynamic Range | 0-100,000 ppb (0-100 ppm) |
| Resolution | 0.1 ppb |
| Precision (1σ for 10-s average; aka rms noise) | Greater of 1.5 ppb or 2% of Reading |
| Limit of Detection (10-s average, 2σ) | 3.0 ppb |
| Accuracy | Greater of 1.5 ppb or 2% of Reading |
| Calibration | NIST Traceable; Annual calibration recommended |
| Measurement Time, Frequency | 2 s, 0.5 Hz |
| Data Averaging Options | 10 s, 1 min, 5 min, 1 hr |
| Response Time, 100% of Step Change | For 2-s output: 4 s, 2 data points For 10-s output: 20 s, 2 data points |
| Adaptive Filter | Available, user-specified parameters |
| Data Transfer Baud Rate | 2400 |
| Ozone Units | ppb, pphm, ppm, µg m-3, mg m-3 |
| Temperature Units | oC, oF, K |
| Pressure Units | mbar, torr, psi |
| T and P Corrected | Yes |
| DewLine™ for Humidity Control | Yes |
| Operating Temperature Range | 0 to 50oC (20 to 30oC for FEM) |
| Flow Rate | Minimum required: 0.6 L/min; Nominal: 1 L/min; Maximum: 1.5 L/min |
| Data Outputs | RS232; 0-2.5 V, 4-20 mA |
| Power Requirements | 11-28 V DC, nominally 165 mA at 12 V DC, 2 watt |
| Relay with 2 Setpoints | Yes, responds based on user's ozone set points |
| Size | 8.7 x 4.0 x 3.0 inches (22 x 10 x 7.6 cm) |
| Weight | 2.0 lb (0.89 kg) |
| Options | Pump, Enclosure, Bluetooth, WiFi, AQLite packages |
Features
- Accurate measurement based on UV absorption
- Low power consumption (~ 2 watt)
- 2-s measurement interval
- Small footprint (8.7 × 4.0 × 3.0 in; 22 × 10 × 7.6 cm) for easy integration into ozone systems
- RS-232 output
- Analog output (0-2.5 V and 4-20 mA)
- Relay with 2 set points (based on user's ozone set points)
- Options: pump, enclosure, Bluetooth, WiFi
To download a brochure describing the Model 108-L Ozone Monitor or its operation manual, click on the download buttons below.
Application Notes
Other Options in Our Model 108 Series Ozone Monitors
Higher measurement ranges are offered in other instruments in our Model 108 Series Ozone Monitors. Please inquire about our Model 108-M (20 ppb – 1000 ppm), Model 108-MH (100 ppb – 10,000 ppm), or Model 108-H (0.02 wt% – 20wt%).
Confused about which ozone monitor best suits your application?
- Decision Tree: This will help you decide which ozone monitor is best for your application.
- Comparison: See a table that compares the specifications of all of our ozone monitors.
- Applications: The most suitable ozone monitors for different applications are discussed here.