Home > Products > Water Quality Tester > Monitor / Controller > HM Digital DM-2 Commercial In-Line Dual TDS Monitor
HM Digital DM-2 Commercial In-Line Dual TDS Monitor
  • NULL
  • NULL
  • NULL

HM Digital DM-2 Commercial In-Line Dual TDS Monitor

Rating: 0 out of 100 - based on 0 review(s) | Write Review | Add to Compare
Item details

Stock: Stock available

Brand: HM Digital
Product Options
 * required
  Share This   Add To Facebook

HM Digital DM-2
Commercial In-Line Dual TDS Monitor

Quality Product ~ Designed in USA and Korea

Know when to change your water filter

The DM-2 is a commercial grade monitor measuring TDS feed (input) water vs. product (output) water of a water filtration system at any time. With its shielded cables and diagnostic messaging this robust device is ideal for Reverse Osmosis (RO), Deionized water (DI) filtration systems that work well in applications such as drinking or potable water, Water treatment, Aquariums, Hydroponics and many more.


  • Highly efficient and accurate due to its advanced microprocessor technology
  • Displays TDS levels of the Feed Water and Product Water with in & out electrode probes
  • Auto-Off function conserves battery power (Shuts off automatically after 3 minutes)
  • Factory Calibrated: our meters are calibrated with a 342 ppm NaCl solution. The DM-2 features digital calibration.
  • Diagnostic error messaging
  • Shielded sensor cables
  • Comes equipped with two 1/4 inch (1/4"x1/4"x1/4") or two 1/2 inch (1/2"x1/2"x1/4") T-fitting
  • Designed for commercial/industrial applications
  • Stronger, water-resistant casing
  • Digital calibration can be done individually on each line.
  • Improved design, including an extra-large, easy-to-read LCD display
  • Longer, waterproof, shielded cables
  • Variable mounting bracket


  • Aquaculture
  • Aquarium
  • Drinking Water
  • Food & Beverage
  • Hydroponics
  • Industrial
  • Water Treatment
  • Window Cleaning/Carwash


  • Dual Range: 0-9990 ppm (mg/L)
    • 0-999 ppm, with a resolution of 1 ppm.
    • 1000 to 9990 ppm, the resolution is in 10 ppm increments, indicated by a blinking ‘x10’ image.
  • Accuracy: ±2%
  • Conversion Factor: NaCl (avg. 0.5)
  • Cable Length: 46″ (including sensor), shielded cables
  • Sensor: Dual, 1/4″ diameter for quick-connect fittings
  • Digital Calibration: Digitally factory calibrated to NaCl 342 ppm. Re-calibration can be done separately for each line.
  • Power source: 2 x AA batteries (included)
  • Battery life: Approx. 2 years
  • Size: 11.6 x 6.8 x1.8 cm (4.6 x 2.6 x .7in.)
  • Weight: 201.3 g (7.1 oz.)