Titanium S2 - Dual Inline TDS Meter

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For anyone serious about producing quality RO/DI water for their reef tanks, AutoAqua now has four great TDS meter options built on a compact, feature-rich, and easy to install platform! BRS recommends using a TDS meter as one of the most useful tools for ensuring your RO or RO/DI system is functioning at its best. A TDS meter can not only provide peace of mind in monitoring your final product water, but it can also clue you in to when it's time to replace filter media. The Titanium S2 model features two remote TDS probes and cords, along with a magnetic display that makes for easy installation on the metal frame common on most RO and RO/DI systems. This allows for readings at two locations in the system, such as after the RO membrane and after the DI resin stage, which is where water quality will most often change with filter performance.


The Titanium series of TDS meters from AutoAqua are the smallest inline TDS meter in the hobby, making it very easy to find a spot to mount the display, and as the name would suggest, the TDS probes have titanium conductors, which provide great longevity and protection from corrosion. In addition, each Titanium TDS meter features a big backlit LCD display that activates with a single button push, giving you quick access to water quality readings. They also include push-connect union tees with each meter for fast and simple installation on your system lines. 


To conserve battery life, the unit will turn off automatically after 3 minutes when not in use. They use a common CR2032 lithium battery so when it comes time to change it, you should have no problem finding a replacement. Under normal use, the battery should last a year or more! There is also a low battery indicator on the display so you’ll never be left high and dry. 



  • Backlit LCD Display
  • Simple installation with a 1/4 in. push connect union tee included
  • Magnetic display mount
  • High quality titanium probe
  • Compact design
  • Auto-off function
  • Calibratable
  • Low battery indicator



  • Probes: 2
  • Range: 0-999 ppm
  • Resolution: 1 ppm
  • Accuracy: +/- 2%
  • Power Source: CR2032 battery
  • Battery Life: Approx. 1 Year


What's Included?

  • Titanium S2 (Model TDS-200S) Inline TDS Meter
  • Battery
  • 1/4" Push-Connect Union Tee (x2)
More Information
SKU 213047
Out of stock message DISCONTINUED
UPC 4714041211900
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