HM Digital HM-200
Hydromaster Portable
pH/EC/TDS/Temp Monitor

The HM-200 is a versatile portable pH/EC/TDS/Temp monitor ideal for all water quality testing, hydroponics, water purification applications, wastewater regulation, aquaculture, colloidal silver, labs & scientific testing, pools & spas, ecology testing, boilers & cooling towers, water treatment and more.

Features:

• Measures Potential Hydrogen (pH), Electrical Conductivity (EC), Total Dissolved Solids (TDS), Salinity and Temperature
• Five scales: pH, µS, mS, ppm 0.5 (NaCl) Scale & 0.7 (442™) Scale
• Automatic Temperature Compensation (ATC) using three temperature coefficients
• Digital Calibration (push button) to any point within the meter’s range
• Auto-off function, data-hold function and low-battery indicator
• Large and easy-to-read LCD Screen
• Displays 3 parameters (pH/EC or TDS/Temp) simultaneously.
• Replaceable Sensors (model SP-C2 for Conductivity, SP-P5 for pH)
• Factory Calibrated (pH/EC/TDS)
• Includes protective rubber boot, 2 (AA) alkaline batteries, pH 4 & 7 calibration solutions.

Specifications:

• Measurement Range:
• pH: 0.00 - 14.00 pH
• Temperature: 0.0 - 55.0 °C / 32.0 - 130 °F
• TDS: 0 - 9999 ppm / 0 -10 ppt
• EC: 0 - 9999 µS / 0 - 20.00ms
• ATC at range: 25°C (77°F) with accuracy:
• pH: ± 0.1 pH
• Temp: ± 1 °C
• TDS: ± 2%
• EC: ± 2 %
• Measurement Scales:
• pH: pH
• Temp: °C, °F
• TDS: ppm (0.5) / ppm (0.7)
• EC: µS / mS
• Resolution:
• pH: 0.1 pH
• Temp: 0.1°C / 0.1 °F
• TDS: ppm: 0.1 ppm (0 - 99.9 ppm) / 1 ppm (100 - 9999 ppm) / ppt: 0.01 ppt (0 - 10.00 ppt)
• EC: µS: 0.1 µS (0 - 99.9 µS) / 1 µS  (100 - 9999 µS) / mS: 0.01 mS  (0 - 20.00 mS)
• Power Source: 2 x AA Battery
• Function Environment:  0 - 50°C (0-122°C) / RH 80 % (EC Probe: 0 - 80°C)
• Sensor Cable: 609mm (24-inch) shielded Coaxial Cable
• Dimensions: About 140 x 66 x 28mm (5.5 x 2.6 x 1.1 inches)
• Weight: 200g (7 ounces) for body / 140g (5 ounces) for two probes (without case)

Package includes:

• 1 x HM-200 monitor with rubber boot
• 1 x pH probe (SP-P5)
• 1 x TDS/EC probe (SP-C2)
• 1 x packet of pH 7 Buffer Solution (PH-P7)
• 1 x packet of pH 4 Buffer Solution (PH-P4)
• 1 x User Manual
• 2 x AA Batteries