DM-3

The DM-3 is a commercial-grade EC/TDS monitor designed to measure the conductivity (EC) and total dissolved solids (TDS) of feed (input) and product (output) water in a water filtration system. It provides a reliable solution for monitoring water quality in various applications, including Reverse Osmosis (RO) systems, deionized (DI) water filtration, drinking water, aquariums, hydroponics, and water treatment systems.

With its large backlit screen, the DM-3 is perfect for low-light environments. Its shielded cables and diagnostic error messaging make it durable and efficient, offering unparalleled performance in commercial-grade settings.

Key Features

• Advanced Microprocessor Technology: Ensures high efficiency and accuracy.
• Dual Measurement Display: Shows TDS levels for both feed (input) and product (output) water with in-and-out electrode probes.
• Auto-Off Function: Automatically powers off after 3 minutes to conserve battery life.
• Factory Calibrated: Pre-calibrated with a 342 ppm NaCl solution; supports separate digital calibration for each line.
• Diagnostic Messaging: Built-in error messaging for troubleshooting.
• Shielded Cables: Enhances signal accuracy and durability.
• Quick-Connect Fittings: Equipped with two 1/4-inch T-fittings; also available with 3/8-inch or 1/2-inch fittings.

Specifications

Range:

• EC: 0–9999 μS / 0–9.99 mS
• TDS: 0–5000 ppm / 0–5 ppt

Resolution:

• EC:
  • 0.1 μS (0–99.9)
  • 1 μS (100–999)
  • 10 μS (1000–9990)
  • 0.01 mS (0.00–9.99)
• TDS:
  • 0.1 ppm (0–99.9)
  • 1 ppm (100–999)
  • 10 ppm (1000–5000)
  • 0.01 ppt (0.00–5.00)

Accuracy: ±2%
Conversion Factor: NaCl (avg. 0.5)
Cable Length: 1.2 m (3.9 ft), shielded cables
Sensor: Dual, 1/4-inch diameter (model SP-3, included)
Calibration: Digital, pre-calibrated to NaCl 342 ppm; supports re-calibration.
Power Source: 2 × AA batteries (included)
Size: 11.6 × 1.9 × 7.0 cm (4.6 × 0.7 × 2.8 in)
Weight: 225 g (7.9 oz.)
Warranty: One Year

Applications

• Reverse Osmosis (RO) Systems
• Deionized (DI) Water Filtration
• Drinking and Potable Water
• Water Treatment Plants
• Aquariums
• Hydroponics

The DM-3 Commercial In-Line Dual EC/TDS Monitor is the perfect choice for professionals who demand precise and consistent water quality measurements.