You are here:  Instrumentation  •  Products  •  Characteristics and water quality  •  Multi-channel loggers  •  XRX-420/620


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.

Read more Read more
  • 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

Buoys and plataforms Characteristics and water quality Comunication and control Data acquisition systems Gas sensor Geophysics Level, tide and wave Monitoring structures Naval Robotics Sediment samplers Sounds Water and plankton samplers Water velocity

Site Map - Policies - Pol. Indus. "La Pedrera" c/ Watt nē9 - Tlf: (00 34) 965 731 073 - Fax: (00 34) 965 733 982
SIDMAR Oceanographic Studies and Services
Espaņol English Contact