Re: CS615 Probe Datalogger

[M.. G.]

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Since the Watermark acts like a variable resistor, one could use 
circuits similar to those found in a Radio Shack digital volt-ohmmeter.  
The entire meter costs less than twenty dollars, retail.  The basic 
measurement ic must be available for a few dollars or less.

M.. G.

owner-sowacs@aqua.ccwr.ac.za wrote:

> Everyone wants to build a better or cheaper logger. A plc can handle
> that already and it can do the switching for multiple sensors.  What it
> cannot do is create the signal for a Watermark  that I can use for input
> to an analog card.  Does anyone have a simple signal generator or
> schematic that I could use? Thanks     Pete Pankey