Data Acquisition & Telemetry


Designed for the deep

September 2009 Data Acquisition & Telemetry

Instrotech’s pressure and temperature data collector is 100% waterproof.

The DCX-22 is an autonomous, battery powered instrument made of stainless steel designed to record water depth (pressure) and temperature over long periods. Pressure ranges are 0,8–11 bar with long term stability typically 0,5 mbar. Two versions are available:

DCX-22

The sensor, electronics and battery are housed in a sealed stainless steel tube. For data read-out, the DCX-22 must be recovered from the measurement point. The O-ring sealed end cap is then removed to access the data port. The DCX-22 works with an absolute pressure sensor. In shallow water depths where the influence of barometric pressure changes should be considered, it is recommended that a second data collector DCX-22 (Baro) is placed at the surface, to record the barometric pressure. The PC then calculates the differential pressure (the water depth) by subtracting the two measured values.

DCX-22 SG/VG

The sensor is connected by waterproof cable to a surface mounted housing with the data read-out port. This arrangement allows for easier data recovery from fixed installations. The DCX-22 SG/VG does not have to be removed from the dip pipe for data read out. The DCX-22 SG/VG is supplied with a 50 mm diameter fixing plate to enable mounting at the top of the dip pipe. The sensor can be sealed gauge SG, or vented gauge VG. The cable carries the vent tube for VG version sensors and the vent port in the housing is protected by a permeable Gore-Tex membrane.

For more information contact Pieter Deysel, Instrotech, +27 (0)11 462 1920, info@instrotech.co.za, www.instrotech.co.za



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