HM Digital Pro Series Pen style pH/TDS/EC/Temp meter

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)