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HM Digital HM-200: Portable pH/EC/TDS/Temp Monitor
The HM Digital HM-200 HydroMaster is a highly versatile and reliable portable monitor engineered for comprehensive water quality analysis. This essential instrument accurately measures four critical parameters: Potential Hydrogen (pH), Electrical Conductivity (EC), Total Dissolved Solids (TDS), and Temperature. It provides professional-level data, enabling efficient and effective water management for a wide array of applications.
Key Features
• Multi-Parameter Measurement: The HM-200 allows for simultaneous display of three parameters (pH/EC or TDS/Temp) on its large, easy-to-read LCD screen. It supports five distinct measurement scales: pH, microsiemens (µS), millisiemens (mS), parts per million (ppm) using the 0.5 (NaCl) scale, and ppm using the 0.7 (442™) scale.
• Automatic Temperature Compensation (ATC): Featuring a built-in sensor for ATC, the meter ensures that readings remain accurate across a range of temperatures (0.0-60.0 °C) by utilising three temperature coefficients.
• Digital Calibration: This meter offers digital push-button calibration to any point within its range. It comes factory calibrated for pH, EC, and TDS, ensuring it is ready for immediate use straight out of the box.
• User-Friendly Design: Designed for simplicity, the HM-200 provides clear, understandable readings without requiring specialised skills. For added convenience, it includes an auto-off function after 5 minutes of inactivity, a data-hold function, and a low-battery indicator.
• Durable and Portable: Built for longevity and ease of transport, the HM-200 comes with a protective rubber boot to enhance durability and is compactly designed to be lightweight and portable.
• Replaceable Sensors: The device is equipped with replaceable sensors (model SP-C2 for Conductivity and SP-P5 for pH), which significantly extends the product's lifespan and maintains its measurement integrity over time.
Versatile Applications The HM-200 is an indispensable tool for a broad spectrum of water quality testing scenarios,
including but not limited to:
• Hydroponics and aquaculture
• Water purification systems and drinking water quality assessment
• Wastewater regulation
• Laboratory and general scientific testing
• Ecology testing
• Monitoring water in boilers and cooling towers
• Pool and spa maintenance
• Colloidal silver production
Package Contents
Each HM Digital HM-200 package is comprehensive and includes:
• The HM Digital HM-200 unit
• A protective rubber boot
• Two AA alkaline batteries
• pH 4 and pH 7 calibration solutions
• pH preservation solution
Warranty The HM Digital HM-200 is backed by a One-Year Limited Warranty, while the pH Probe (model SP-P5) specifically carries a Six-Month Limited Warranty.
Technical Specifications
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Feature
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Specification
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Measurement Parameters
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pH, Electrical Conductivity (EC), Total Dissolved Solids (TDS), Salinity, Temperature
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pH Range
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0.0 - 14.0 pH
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EC Range
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0 - 9990 µS; 0 - 20.00 mS
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TDS Range
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0 - 9990 ppm
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Temperature Range
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0 - 55 °C (32 - 130 °F)
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pH Accuracy
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± 0.1 pH
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EC/TDS Accuracy
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± 2%
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Temperature Accuracy
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± 1 °C/°F
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pH Resolution
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0.1 pH
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EC Resolution
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µS: 0.1 µS (0-99.9 µS), 1 µS (100-999 µS), 10 µS (1000-9990 µS) <br> mS: 0.01 mS (0.01-20.00 mS)
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TDS Resolution
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ppm: 0.1 ppm (0-99.9 ppm), 1 ppm (100-999 ppm), 10 ppm (1000-9990 ppm)
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Temperature Resolution
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0.1 °C/0.1 °F
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Measurement Scales
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pH, µS, mS, ppm 0.5 (NaCl) Scale, ppm 0.7 (442™) Scale, °C, °F
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Automatic Temperature Compensation (ATC)
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0.0 - 60.0 °C (using three temperature coefficients)
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Calibration
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Digital (push-button) to any point; Factory Calibrated (pH/EC/TDS)
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Data Storage
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Up to 20 measurement readings
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Auto Shut-Off
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After 5 minutes
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Power Source
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2 AA Alkaline Batteries
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Display Type
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Large and easy-to-read LCD Screen
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Probe
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ABS with Electrodes Conductivity Sensor (SP-C2) / Single Junction Ag/AgCl pH Sensor (SP-P5)
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Sensor Cable Length
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SP-P5: 2m (80 inch); SP-C2: 1.9m (75 inch)
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Dimensions (L x W x H)
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Approx. 14 x 6.6 x 2.8 cm (5.5 x 2.6 x 1.1 inches)
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Weight (Body)
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Approx. 198 g (7 oz) / 212 g (7.5 oz) with batteries and cover
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Material
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Plastic (with protective rubber boot)
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Country of Origin
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India
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Warranty
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One-Year Limited (Meter); Six-Month Limited (pH Probe SP-P5)
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Product overview
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