OS-3 Ozone Switch™
This model will be discontinued and is replaced by the OS-4 Ozone
Switch™ which has many additional features.
Acts like a thermostat to control ozone generators and alarms
based on an adjustable ozone concentration set-point. Ozone ppm
readout via digital meter. Simple and inexpensive.
Features:
Easy to install. Minimal adjustments.
Sensor is in a replaceable precalibrated module. Separated by a
cable, the instrument is not in the high ozone area.
Operates from 12-24 VDC or from AC adapters available
worldwide.
Hysteresis to avoid system chatter.
Alarms, data loggers, and other accessories available.
Typical Applications:
Monitor ozone levels in treatment storage areas for fruits,
vegetables, and other agricultural products. Monitor supply ducts
of ozonated HVAC systems. General monitoring at .5-10 ppm
Determine the output of small ozone generators using the air flow
rate and ozone concentration formula.
Use as either ozone leak alarm or ozone failure alarm for all sizes
of ozone generators.
Specifications:
Range and Accuracy: .5-10 ppm of ozone.
Accuracy: 20% (Typical, depends on application).
Temperature and humidity: Limits are very application specific.
Measurement Principle: HMOS (heated metal oxide semiconductor)
sensor.
Size: 76 × 64 × 42 mm (3 × 2.5 × 1.625 in).
Weight: 140 gr (5 oz)
Power Requirements: 12-24 VDC, 300 mA. AC adapters available.
Output control: SPDT non-latching relay. Contacts rated at 5 amps,
250 VAC.
Connections: Terminal blocks for relay output and DC input. 2.5 mm
DC power jack for AC adapter.
Indicators: Green LED: instrument on. Red LED: set-point exceeded
and relay activated.
Monitor output: 0-2 V for data logger or other monitoring
equipment.
Case: Flame-resistant ABS with mounting ears and hidden wiring
port.
Not recommended for outdoor use or in presence of strong gases or
strong VOC fumes.