
HM Digital Hydromaster HM500 - Continuous pH TDS EC Temp Meter

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Is the HM Digital Hydromaster HM500 the Right Choice for You?
If you're searching for a professional-grade, continuous water monitoring system with enhanced functionality, the HM Digital Hydromaster HM500 is a top-tier choice. Ideal for hydroponics, aquaculture, and scientific research, this advanced device delivers real-time tracking of pH, EC, TDS, and temperature to ensure optimal water quality management. Featuring a user-friendly touchscreen interface, it simplifies navigation while providing quick access to critical data.
- Features & Benefits
- Product Specifications
- What is included?
- Warranty Policy
HM Digital Hydromaster HM500 - Continuous pH TDS EC Temp Meter
The HM Digital Hydromaster HM500 is a high-performance, continuous water monitoring system, ideal for hydroponics, aquaculture, and laboratory applications. Designed for real-time tracking, this advanced meter delivers precise readings for pH, EC, TDS, and temperature, ensuring optimal water conditions.

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Programmable alerts for parameter limits.
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24/7 monitoring of pH, EC, TDS & temperature.
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Stores 20 readings for trend tracking.
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Touchscreen for easy navigation
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ATC ensures precise measurements.
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Auto-shutoff for energy efficiency.
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Dual power: rechargeable battery or AC adapter.
Why Choose the HM Digital Hydromaster HM500 - Continuous pH TDS EC Temp Meter?
The HM Digital Hydromaster HM500 is a high-precision, continuous water monitoring system built for professional and industrial applications. Designed for hydroponics, aquaculture, and laboratory use, this advanced meter delivers real-time measurements of pH, EC, TDS, and temperature to ensure optimal water conditions. With customizable alert settings, a large touchscreen display, and internal memory capable of storing up to 20 readings, the HM500 makes water management effortless. It features automatic temperature compensation for improved accuracy and an intuitive interface for seamless operation.
Why HM Digital?
HM Digital is a trusted name in water quality testing, offering innovative and reliable solutions for growers, aquarium enthusiasts, and professionals. Designed for precision, its advanced meters provide accurate TDS and temperature readings, ensuring optimal water conditions. With user-friendly features like digital calibration and a durable, water-resistant design, HM Digital products help you maintain consistency and efficiency in your water monitoring routine.

Why Buy From Us?
At GreenThumbDepot, you're not just another sale to a faceless corporation. You're partnering with a team genuinely invested in your success. Our legendary customer service, combined with a promise of unbeatable prices, sets us apart. We're here for you, always.
FAQ Section








Specifications
HM Digital Hydromaster HM500 - Continuous pH TDS EC Temp Meter Specifications | |
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Measurement Parameters | pH, Electrical Conductivity (EC), Total Dissolved Solids (TDS), Temperature, Salinity |
pH Range | 0.1 – 14.0 pH |
Temperature Range | 0.0 – 80.0 °C / 32.0 – 176.0 °F |
TDS Range | 0 – 9999 ppm / 0 – 10.00 ppt |
EC Range | 0 – 9999 µS / 0 – 20.00 mS |
Salinity Range | 0.00 – 10.00 ppt |
Resolution | pH: 0.1 pH | Temp: 0.1°C / 0.1 °F | TDS: 0.1 ppm (0 – 99.9 ppm), 1 ppm (100-999 ppm), 10 ppm (1000-9999 ppm) | EC: 0.01 mS (0.01 – 20.00 mS) |
Automatic Temperature Compensation (ATC) | Yes |
Accuracy | pH: ± 0.1 pH | Temp: ± 1 °C / °F | TDS: ± 2% | EC: ± 2% |
Power Source | Rechargeable Lithium-ion Battery / AC 110V – 220V Adapter |
Energy Saving Feature | Auto-off function after 5 minutes of inactivity |
Operating Environment | 0 – 50°C (32-122°F) / RH 80% (EC Probe: 0 – 80°C) |
Sensor Cable Length | 24-inch shielded coaxial cable |
Display | Large touchscreen LCD with real-time multi-parameter display |
Data Logging | Stores up to 20 readings for analysis and calibration |
Dimensions | 8 x 4 x 1.5 inches |
Weight | 15.2 oz (monitor body) / 5 oz (two probes, without case) |
Usage | Ideal for hydroponics, aquaculture, laboratory research, and industrial water quality management |
What's Included?
The HM Digital Hydromaster HM500 - Continuous pH TDS EC Temp Meter package includes:
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HM Digital Hydromaster HM500 Advanced Water Quality Monitoring System
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High-precision replaceable pH and EC/TDS sensor probes with shielded coaxial cables
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Rechargeable lithium-ion battery and AC power adapter for flexible operation
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Built-in data logging with storage for up to 20 previous measurement readings
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User guide with step-by-step calibration, configuration, and usage instructions

Warranty Policy
Please check out the manufacturers website for Warranty related issues.