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XRX 420/620 Ten Channel CTD

XRX-420 and 620 autonomous data logger come equipped with sensors for Conductivity, Temperature & Depth, and supports a maximum of 7 additional sensors (up to 6 for the XRX with freshwater conductivity), may be configured so that further sensors can be added at any time.
Additional sensors include: pH, ORP (RedOx), Dissolved Oxygen, Fluorescence, Turbidity, Transmittance, PAR and many others in any combination. C, T, D and DO are measured to WOCE standard.

The XRX-620 is the profiling version of the standard XRX-420 logger; it includes all of the above features, plus 6Hz maximum sampling rate, fast Thermistor (0.095s time constant), thresholding capability (logger only samples while submerged) and optionally, a fast response dissolved oxygen sensor, approximately 1 sec for 63% at 25ēC.


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Features:
  • Depth ranges up to 740 m
  • XRX-420: 1Hz maximum sampling rate
  • XRX-620: 6Hz maximum sampling rate. Fast Thermistor (0.095s time constant). Thresholding capability (logger only samples while submerged)
  • End cap is predrilled for six sensors on the face and six connectors on the rear
  • All calibration constants are stored in the logger
  • 8 MB Flash memory standard (2.4M samples), up to 8 GB option
  • Battery is 1.3Ah internal with external battery options or power supplied over the cable from the deck
  • RS232 or RS485 serial communication allows real-time operation over long cable links
XRX 420/620 RBR
XRX 420/620 RBR

 
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