User manual VAISALA RSA921 DATASHEET

[. . . ] www. vaisala. com Vaisala Ozone Interface Kit RSA921 Features / Benefits Built around Vaisala Digital Interface OIF92 Four-channel digital interface for connecting digital Vaisala Radiosonde RS92 models to ECC-type ozone sensors 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 RSA921, featuring the Vaisala Digital Interface OIF92, is used for ozone sounding with the digital versions of the Vaisala Radiosonde RS92 and an ECC-type ozone sensor (Science Pump Corporation model ECC-6A or EN-SCI Corporation model Z). [. . . ] It is easy to perform simulations and post-ascent processing with the METGRAPH module of the DigiCORA® Sounding Software. System maintenance can be performed by Vaisala under the terms of a Vaisala Service Contract. Technical data Digital Interface OIF92 Science Pump Corporation ECC-6A ozone sensor and EN-SCI Corporation Model Z ozone sensor 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 . . . +60 °C Operating temperature range for all channels - 40 . . . +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 . . . [. . . ] All specifications -- technical included -- are subject to change without notice. [. . . ]