HM Digital - HM-100 Continuous pH/EC/TDS/Temp Monitor

Brand: HM Digital

HM Digital HM-100 Continuous pH/EC/TDS/Temp Monitor

The HM Digital HM-100 is a continuous monitor that displays pH, EC or TDS, and temperature at the same time on three LED readouts. HM Digital designed it for continuous monitoring of nutrient solution, keeping the parameters most important to plant growth in view around the clock.

Wall-mount the HM-100 beside a reservoir or nutrient tank, leave the pH and EC/TDS probes in solution, and operators can read all three values at a glance. Separate HIGH and LOW alarm set points sound an audible alarm and flash the display to alert staff from a distance when a value leaves its range, and the unit runs from a 5 V DC power adapter for uninterrupted operation in indoor cultivation and controlled-environment agriculture facilities.

Available Options

• HM-100 monitor - ships with power cable, pH 4 and pH 7 calibration solutions and pH storage solution

Key Features

• Simultaneous pH, EC or TDS, and temperature display on three LED readouts with four brightness levels
• pH range 0.1 - 14.0 (0.1 pH resolution, +/- 0.1 pH accuracy)
• EC range 0 - 10.00 mS (0.01 mS resolution); TDS range 0 - 9990 ppm (1 ppm / 10 ppm resolution); EC/TDS accuracy +/- 2%
• Temperature range 32.0 - 122.0 deg F (0.0 - 60.0 deg C), +/- 1 deg accuracy
• Selectable TDS factor: ppm 0.5 (NaCl) or ppm 0.7 (442)
• Automatic temperature compensation from 0.0 - 60.0 deg C
• HIGH and LOW alarm set points assigned separately, with audible alarm and mute
• Stores up to 6 readings for later recall
• Push-button digital calibration; factory calibrated for pH and EC/TDS
• Replaceable sensors: SP-C2 conductivity probe and SP-P5 single-junction Ag/AgCl pH probe
• Wall-mount groove; 5 V / 1 A DC power
• Three-year limited warranty on the monitor; one year on the EC probe and six months on the pH probe

Ideal Applications

• Continuous reservoir and nutrient tank monitoring in hydroponic systems
• Fertigation and batch-tank monitoring with out-of-range alarms
• Propagation and nursery nutrient solution monitoring
• Water-quality monitoring in treatment and aquaculture systems