Description
The HM Digital COM-300 is a professional pH/EC/TDS/temperature meter for water-quality testing, hydroponics, water purification, wastewater regulation, aquaculture, colloidal silver, laboratory and scientific testing, pools and spas, ecology testing, boilers, cooling towers, and water treatment.
Features
- Measures pH, electrical conductivity (EC), total dissolved solids (TDS), and temperature.
- Five scales: pH, µS, mS, ppm 0.5 (NaCl), and ppm 0.7 (442).
- Automatic Temperature Compensation (ATC) using three temperature coefficients.
- Digital push-button calibration to any point within the meter’s range.
- Auto-off, data-hold, and low-battery indicator.
- Large, easy-to-read LCD with simultaneous temperature display.
- IP67 waterproof housing; submersible and floats.
- Replaceable SP-C3 sensor.
- Factory calibrated for pH, EC, and TDS.
- Includes a translucent cap, two AAA alkaline batteries, pH 4 and pH 7 calibration solutions, pH storage solution, and a lanyard.
Technical specifications
- pH range: 0–14 pH
- EC range: 0–9990 µS; 0–9.99 mS
- TDS range: 0–8560 ppm (0.7 scale); 0–5000 ppm (0.5 scale)
- Temperature range: 0–55°C; 32–130°F
- pH resolution: 0.1 pH
- EC resolution: 1 µS from 0–999 µS; 0.01 mS on the 0–9.99 mS range
- TDS resolution: 1 ppm from 0–999 ppm; 10 ppm from 1000–9990 ppm
- Temperature resolution: 0.1°C/°F
- Accuracy: ±2%
- EC-to-TDS conversion: User-selected nonlinear conversions for KCl,442, or NaCl solutions
- Probe: Detachable platinum electrodes and glass pH sensor with reference tube electrodes
- Power: Two AAA batteries, included
- Dimensions: 18.5 × 3.4 × 3.4 cm (7.3 × 1.3 × 1.3 inches)
- Weight: 101.5 g (3.6 oz)