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HM Digital DM-2: Commercial In-Line Dual TDS Meter

£38.50£60.00 ex. VAT - £46.20 inc. VAT

  • Designed for commercial/industrial applications.
  • Stronger, water-resistant casing
  • Available with 1/4″, 3/8″ or 1/2″ quick connect fittings
  • Highly efficient and accurate due to its advanced microprocessor technology (Accuracy: ±2%)
  • Auto-off function automatically shuts off meter after 3 minutes of non-use to conserve battery power
  • Displays TDS levels of the feed water and product (pure) water with the In and Out electrode probes
  • Installs quickly and easily
  • Measures from 0-9990ppm (0 – 999 = 1ppm,1000 -9990 =10ppm)


HM Digital DM-2: Commercial In-Line Dual TDS Meter

HM Digital DM-2 dual in-line TDS Meter is suitable for use in industrial applications such as; Window Cleaning, Aquatics, Hydroponics, Manufacturing plus may other pure water applications where you need to monitor the TDS of two different water supplies.

The DM-2 Commercial Dual Inline TDS Meter has a stronger water resistant casing than the DM-1. This meter monitors the TDS of your reverse osmosis system in two places and displays exactly how the system is performing. We suggest installing the dual TDS meter after your membrane and before the D.I unit. These two readings will notify you when it’s time to change the R.O membrane and D.I resin.

This unit features a digital display and comes with two 1/4″ John Guest Quick Connect fittings.

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. The unit shuts off automatically after 20 seconds.
Dual Range – Measures from 0-999 ppm, with a resolution of 1 ppm. From 1000 to 9990 ppm, the resolution is in 10 ppm increments, indicated by a blinking ‘x10’ image.
Factory calibrated: the DM-2 meters are calibrated with a 342 ppm NaCl solution. Meters can be re-calibrated with a mini-screwdriver.
Comes equipped with 1/4 inch John Guest Quick-Connect T-fittings as shown. Also available with 3/8″ fittings.
Installs quickly and easily.

Range: 0-9990 ppm
Accuracy: ±2%
Cable Length: 46″ (including sensor)
Calibration: Factory calibrated with NaCl 342 solution.
Power source: 2 AAA batteries (included)
Battery life: over 1000 hours of continuous use
Size: 11.6 x 6.8 x1.8 cm (4.6 x 2.6 x .7in.)
Weight: 201.3 g (7.1 oz.)

Additional information

Dimensions11.6 × 6.8 × 1.8 cm
Select Option

DM2 1/4" Fittings, DM2 3/8th Fittings, DM2 1/2" Fittings + 1/2" Stems