The HM Digital DM-2EC is the conductivity version of the DM-2: it reads in µS rather than ppm, which is what most industrial and laboratory specifications are written in. Two permanently installed ¼" sensors read feed and product water; a switch selects IN or OUT.
Commercial build: water-resistant casing, long shielded cables, oversized LCD, variable mounting bracket, and independent digital calibration on each line.
| SKU / Model | DM-2EC |
| Product Type | In-line dual (feed vs. product) EC monitor, commercial grade |
| EC Range | 0–9990 µS, dual range |
| Resolution | 0–999: 1 µS · 1000–9990: 10 µS (blinking ‘x10’ icon) |
| Accuracy | ±2% of reading |
| Factory Calibration | 700 µS (digital) — IN and OUT sensors calibrate separately |
| Sensors | Dual, ¼" diameter for quick-connect fittings |
| Sensor Cable Length | 46" (116.8 cm) including sensor, shielded |
| Power Source | 2 × AA batteries |
| Low-Battery Indicator | ‘bat’ shown for 3 seconds at power-on |
| Auto Shut-Off | After 3 minutes |
| Dimensions | 4.6 × 2.6 × 0.7 in (11.6 × 6.8 × 1.8 cm) |
| Weight | 7.9 oz (224.3 g) including batteries |
| Warranty | 1 Year Limited Warranty |
Specifications transcribed from the HM Digital DM-2EC User’s Guide.
📖 DM-2EC Manual (PDF)Installation, calibration, battery replacement and troubleshooting. Published by HM Digital, Inc.
