EN-SCI ECC Ozonesonde

A lightweight, compact, and inexpensive balloon-borne instrument for measuring atmospheric ozone.


The EN-SCI ECC Ozonesonde is available in several models to accommodate different types of radiosondes or operating environments.

Model Z

Model 1Z

Model 2Z


Model Z Fits Vaisala RS92 digital and analog radiosondes
Model 1Z Fits older Vaisala radiosondes
Model 2Z Model 2Z-V7 fits InterMet radiosondes (http://intermetsystems.com/index.php/products/imet-1-rsb)
and Graw DFM-97 radiosondes (http://www.graw.de/home/products2/radiosondes0/dfm-97/)

Included Items

  • Ozonesondes
  • Operator manual
  • One-year warranty
  • Email and phone technical support

Accessories (Purchased separately)


Information about the accuracy, precision and resolution of the EN-SCI ECC Ozonesonde appears below.

At 1000 hPa: ±5% accuracy, ±4% precision, 0.3 km resolution
At 200 hPa: ±12% accuracy, ±12% precision, 0.3 km resolution
At 100 hPa: ±5% accuracy, ±3% precision, 0.3 km resolution
At 10 hPa: ±5% accuracy, ±3% precision, 0.4 km resolution
At 4 hPa: ±10% accuracy, ±10% precision, 0.4 km resolution

Resolution figures correspond to approximately a 90% step change in ozone in one minute. Additional specifications appear below.

Parameter Specification
Technique Electrochemical process that generates electrical current in proportion to ozone concentrations
Measured Parameters Ozone partial pressure, sonde housekeeping parameters
Operating Pressure 1050-4 hPa
Operating Temperature 0 – 40 °C
Inside flight box ambient temperature to -90 °C
Power Requirements 12 – 18 VDC, 120 mA
Weight (including battery) 480 g for instrument, including wet battery
240 g for polystyrene flight box
Instrument Dimensions 7.6 cm x 7.9 cm x 13.3 cm
Flight Box Dimensions 19.1 cm x 19.1 cm x 25.4 cm

Specifications are subject to change without notice.

How it Works

Unlike some ozonesondes, ECC sondes do not require an external electrical potential. The ECC gets its driving electromotive force from the difference in the concentration of the potassium iodide solutions in the instrument’s cathode and anode chambers. When ozone enters the sensor, iodine is formed in the cathode half cell. The cell then converts the iodine to iodide, a process during which electrons flow in the cell’s external circuit. By measuring the electron flow (i.e., the cell current) and the rate at which ozone enters the cell per unit time, ozone concentrations can be calculated.


How to Order

Contact EN-SCI for pricing or more information.

mailicon  info@en-sci.com

infoicon Phone: +303 484 9774