User manual VAISALA RSA922 DATASHEET

[. . . ] www. vaisala. com Vaisala Ozone Interface Kit RSA922 Features / Benefits Built around Vaisala Digital Interface OIF92 Four-channel digital interface for connecting digital Vaisala Radiosonde RS92 models to Brewer-Mast type ozone sensor for ozone sounding Enables accurate measurements, sharp vertical resolution and a fast sampling rate Can be used for 1-2 other sensor measurements within specified ranges The Vaisala Ozone Interface Kit RSA922, featuring the Vaisala Digital Interface OIF92, is used for ozone sounding with the digital versions of the Vaisala Radiosonde RS92 and the MAST corporation 730-10 Brewer-Mast type ozone sensor. [. . . ] System maintenance can be performed by Vaisala under the terms of a Vaisala Service Contract. Technical data Digital Interface OIF92 MAST Corporation 730-10 ozone sensor (Brewer-Mast type) Dimensions 40 (l) x 35 (w) mm Cable length 380 mm Weight with cable Max. 20 g Number of analog input channels 4 Analog-to-digital converter resolution 16-bit Measurement temperature range for all channels -5 . . . +85 °C Sampling rate for all channels Dependent upon the radiosonde: e. g. once per second with the RS92-SGP Synchronization All channels are measured in synchronization with the meteorological measurements (pressure, temperature, humidity, wind) Ozone current measurement range 0 . . . 20 µA For use with Ozone current measurement uncertainty *) 0. 05% of the reading, minimum 1 nA Accuracy examples: ­ for 5 µA measurement the accuracy is 2. 5 nA ­ for 10 µA measurement the accuracy is 5 nA ­ for 20 µA measurement the accuracy is 10 nA Resolution 1 nA (LSB = 0. 35 nA) Typical noise 1 nA (standard deviation) Ozone temperature measurement range -5 . . . +60 °C Temperature measurement uncertainty*) ±0. 2 °C Temperature resolution 0. 01 °C Typical noise 0. 015 °C (standard deviation) Voltage measurement range (both voltage channels) 0 . . . 8 V Voltage measurement uncertainty*) 0. 1 % of the reading, minimum 1 mV Resolution 1 mV (LSB = 0. 13 mV) Typical noise 0. 5 mV (standard deviation) Input resistance 20 k Driving potential for sensor bias is 0. 41V (If used, the other optional (used for MAST corporation voltage channel is 730-10 ozone sensor) reserved for this purpose) Driving potential adjustment range ±20 % Driving potential stability ±1 % Power consumption < 3 mA (from radiosonde battery) * 2-sigma (k=2) confidence level (95. 5 %) For more information, visit www. vaisala. com or contact us at sales@vaisala. com Ref. B210437EN-C ©Vaisala 2010 This material is subject to copyright protection, with all copyrights retained by Vaisala and its individual partners. [. . . ] All specifications -- technical included -- are subject to change without notice. [. . . ]