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Model 106-H Ozone Monitor

The Model 106-H is a high concentration ozone analyzer designed to control the output of an ozone generator. This instrument is designed to be installed in-line with an ozone generator and ozone process.

  • Measurement range of 0-20 wt% with 0.01 wt% precision
  • Designed to measure the ozone output of generators that use either air or oxygen as feed gas
  • Flow-through configuration with no air pump; designed to sample at either high pressure (up to 50 psig) or partial vacuum


The Model 106-H is a flow-through ozone analyzer designed to measure high concentrations of ozone and provide feedback control of ozone generators. This instrument is meant to sample from a pressurized source (up to 50 psig) and can handle flow rates ranging from 0.5 – 55 L/min. Our Model 106-H is known for being a low-power (3 watt) highly portable analyzer that is available in three different configurations.


About the 106 Series:

  • Designed for industrial ozone applications to cover four different ozone concentration ranges by varying the optical path length.
  • Highly robust and easy to service; all components are mounted directly to the printed circuit board with few wire connection
  • Available in the three following configurations: Standard Enclosure, Industrial Enclosure, or with no enclosure (OEM version)
  • Industrial/NEMA Enclosure is available with single channel, three channel, or six channel sampling manifolds (106-H only available as single channel)


106 Series Comparison:

Model Range Resolution Precision & Accuracy
106-L 0-100 ppm 0.0001 ppm (0.1 ppb) Higher of 0.0015 ppm (1.5 ppb) or 2% of reading
106-M 0-1,000 ppm 0.01 ppm Higher of 0.01 ppm or 2% of reading
106-MH 0-10,000 ppm (0-1 vol%) 0.1 ppm Higher of 0.05 ppm or 2% of reading
106-H 0-20 wt% O2 or Air
0-14 vol%
0.01 wt%
0.01 vol%
Higher of 0.01 wt% or 2% of reading

Product Configurations

Standard Enclosure

Suitable for air pollution studies and university research.

  • Dimensions (Height x Width x Depth): 3.6 x 7.9 x 9.4 inches / 9 x 20 x 24 cm
  • Weight: 4.2 lbs / 1.9 kg
  • Channels: 1
  • Relays: Two 2-level relays
  • Federal Equivalent Method (FEM) [106-L]
  • DewLine™ for Humidity Control
  • Robust and easy to service

Industrial Enclosure

Suitable for workplace health and safety monitoring where ozone is being produced and used in a wide range of applications (see Applications below).

  • Water-resistant
  • Dimensions (Height x Width x Depth): 16 x 14 x 9.3 inches / 40.7 x 35.7 x 23.6 cm
  • Weight: Approx. 14 lb / 6.3 kg (depends on multi-channel options)
  • Channel Options: 1, 3, or 6
  • Relays: Four 2-Level relays
  • Federal Equivalent Method (FEM) [106-L]
  • DewLine™ for Humidity Control
  • Robust and easy to service

OEM Version (No enclosure)

Suitable for either mounting in a custom enclosure or using as a component of a larger system.

  • Dimensions (Height x Width x Depth):  2.5 x 7 x 9 inches / 6.2 x 17.8 x 22.9 cm
  • Weight: 2.8 lb / 1.3 kg
  • Channel Options: 1
  • Relays: Two 2-level relays
  • Federal Equivalent Method (FEM) [106-L]
  • DewLine™ for Humidity Control
  • Robust and easy to service
  • Measurement based on UV absorption at 254 nm, single beam
  • Low power consumption; can be battery operated (optional external lithium-ion battery)
  • Internal data logger with real-time clock
  • 2-s measurement interval
  • On-board microprocessor with interactive menus includes data averaging options of 10 s, 1 m, 5 m, 1 hr
  • USB and RS-232 output of time/date, O3 concentration, internal temperature and pressure
  • Analog output (0-2.5 V and 4-20 mA) of ozone concentration in user-selected units and scaling factors
  • Two 2-level relays for control purposes (e.g., control of ozone source or turn warning light on and off); Four relays provided on Industrial model
  • Lithium-ion battery available for purchase
  • Bluetooth for wireless data transmission
  • Serial-USB converter available for purchase (not included)
  • Model 106-H Ozone Monitor
  • 1.25A power adapter
  • Serial port cable (9PinF-9PinF)
  • USB cable
  • Relay connectors
  • USB flash drive preloaded with operation manual and other useful documentation
  • KI Method-traceable calibration certificate
  • Monitoring of ozone generator output
  • Monitoring of residual ozone after a cleaning or oxidation process
  • Control of industrial ozone processes
  • Accelerating Ozonolysis Reactions Using Supplemental RF-Activation of Ions in a Linear Ion Trap Mass Spectrometer, B.L.J. Poad, R.S.E. Young, D.L. Marshall, A.J. Trevitt and S.J. Blanksby, Analytical Chemistry (2022) 94, 9, 3897-3903.  ACS Link
  • Experimental Study of the Gas Flow Path for a Dielectric Barrier Discharge Ozone Generator Using for Wastewater Fish Hatchery Depollution, T.M. Layati, K. Nassour, S. Nemmich, N.E.H. Zenagui, M. Jbilou and A. Tilmatine, International Journal of Plasma Environmental Science and Technology (2022) 16, e01005. ResearchGate
  • A New Ozonated Cassava Film with the Addition of Cellulose Nanofibres: Production and Characterization of Mechanical, Barrier and Functional Properties, C.I.A. La Fuente, A.T. de Souza, C.C. Tadini and P.E.D. Augusto, Journal of Polymers and the Environment (2021) 29, 1908-1920.  SpringerLink
  • Evaluation of Ozone Technology as an Alternative for Degradation of Free Gossypol in Cottonseed Meal: A Prospective Study, A. de Cássia Romero, M.A. Calori-Domingues, A.L. Abdalla and P.E.D. Augusto, Food Additives & Contaminants: Part A (2021) 38, 4, 659-669.  Taylor&Francis


Spec Sheet
Measurement Principle UV Absorption at 254 nm, single beam
Measurement Interval 2 s
Linear Dynamic Range 0-20 wt%
Resolution 0.01 wt%
Precision (1σ for 10-s average; aka rms noise) 0.01 wt% or 2% of Reading
Limit of Detection (10-s averaging, 2σ) 0.02 wt%
Accuracy 0.01 wt% or 2% of Reading
Baseline Drift < 0.02 wt%/day, < 0.05 wt%/month
Sensitivity Drift < 1%/day, < 3%/year
Calibration Iodide Titration; annual calibration recommended
Measurement Time and 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
Flow Rate Nominal: Up to 20 L/min; Maximum: 55 L/min
0.5 L/min required for 4-s response time at 2-s output
Data Logger Capacity 32,736 lines (10 s avg. = 3.8 days; 5 min avg = 113 days)
Data Transfer Baud Rates 2400, 4800, 19200
Ozone Units g m-3, g Nm-3, vol%, wt% air, wt% O2
Temperature Units oC, oF, K
Pressure Units mbar, psi, torr
T and P Corrected Yes
Operating Temperature Range 0 to 50oC
Power Requirements 100-240 V AC, 50/60 Hz;
11-28 V DC, nominally 250 mA at 12 V DC, 3 watt
Digital Data Outputs USB, RS232, LCD Display
Analog Data Outputs 0-2.5 V Analog, 4-20 mA, User-Scalable in Menu
Relays with 2 Setpoints Two available:
Relay 1 responds based on user’s ozone set points
Relay 2 responds based on user’s ozone set points OR responds based on diagnostics (T, P, flow, lamp voltage)
Four relays provided on Industrial model
Bluetooth Option Available Yes
Size Standard: 3.6 x 7.9 x 9.4 inches (9 x 20 x 24 cm)
OEM: 2.5 x 7 x 9 inches (6.4 x 17.8 x 22.9 cm)
Industrial: 16 x 14 x 9.3 inches (40.7 x 35.7 x 23.6 cm) H x W x D
Weight Standard: 4.8 lb (2.2 kg)
OEM: 3.0 lb (1.5 kg)
Industrial: ~14 lb (6.4 kg) depending on multi-channel options present
Options Battery; Bluetooth


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