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--- projects:buoy [2013/03/05 19:21]
vrana54 [Sensors]
+++ projects:buoy [2013/03/18 20:05]
vrana54 [Sensors]
@@ Line 33: / Line 33: @@
   * Ammonia
     * Ammonia probes are very expensive (>$400)
-    * Instead, use [[http://www.drsfostersmith.com/product/prod_display.cfm?pcatid=4387|Ammonia Alert Device]] coupled with a [[https://www.atlas-scientific.com/product_pages/sensors/env-rgb.html|color sensor]] to determine concentration. //Will need to place sensor close to the alert device and possible use a light source for accurate readings//
+    * Instead, use [[http://www.drsfostersmith.com/product/prod_display.cfm?pcatid=4387|Ammonia Alert Device]] coupled with a [[https://www.atlas-scientific.com/product_pages/sensors/env-rgb.html|color sensor]] to determine concentration. //Will need to place sensor close (< 3-4 mm) to the alert device and possible use a light source for accurate readings//
   * Nitrate
   * pH

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