NEW Electrochemical sensor,0-20ppm or 0-50ppm range, RS-232 transmitting module, 10% or better accuracy, humidity compensated, eliminates most VOC interferences,  pre-calibrated field replaceable sensor.


The SM-7 Sensor can be used as a stand-alone oem solution with RS-232 communications, or used as the sensor module with the OS-4 or OS-6 Ozone Monitors.

The SM-7 boasts the SM-EC Electrochemical sensor with a range of 0-20ppm or 0-50 ppm.  This sensor will be more accurate, and work better in high humidity areas than the standard SM-X sensor used in the SM-6 Sensor Module.  This is a great option  for food storage and other industrial applications where cross-sensitivity to ozone is a concern from other gasses in the area.

For calibrating your SM-7, you should replace the sensor annually.


Typical Applications:

     -Laundries using ozone.

     -Large noisy factory environments.

     -Casinos and other ozonated public areas.

     -Agricultural storage areas.


     -Food processing plants.



     -25ppb sensitivity with 5ppb resolution.

     -Wide operating range (.02-50ppm).

     -Electrochemical Sensor

     -Wide detection range

     -Low Power

     -Low Maintenance

     -Uses easily available 8-24 VDC power.

     -Small enough to mount almost anywhere.


The SM-EC is an electrochemical ozone sensor module for use with our OS-6 digital instrument. This new technology from Eco Sensors provides accurate ppb-level detection and resolution over a wide (.2-50 ppm) concentration range. The sensor module is compensated for temperature and humidity effects, with little to no cross sensitivity to VOC’s. The SM-EC makes our digital instruments more accurate at both ppb and high ppm levels of ozone, enabling improved monitoring and control for our users.




EcoSensors Calibration information

General Calibration Information


More Information
Manufacturer Eco Sensors
Call For Price No
Gas Ozone (O3)
Resolution 0.01 ppm
Integrated Relays No
Response Time 1 second
Sensor type Electrochemical
Sampling Method Diffusion
Alarms no
Operational Temperature Range 35 - 100 deg F
Operational RH Range 0 - 85% RH
Power Requirements 12 VDC
Field Replaceable Battery No
Warranty 1 Year
Audible Alarm No
Calibration Replace with Pre-Calibrated Sensor Annually
Sensor Life 1 Year
Range 0-20ppm or 0-50 ppm
Unit Features

-RS-232 Transmitter

-Field Replaceable Sensor

Sensor Range

0-20 ppm

0-50 ppm

Sensor Range

0-20 ppm (O3)

0-50 ppm (O3)

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