Description
Hanna Instruments HI99300 Portable Low Range EC/TDS MeterThe Hanna
HI99300 is an IP67 waterproof, handheld meter engineered specifically for measuring low-range Electrical Conductivity (EC), Total Dissolved Solids (TDS), and Temperature in pure and low ionic strength water. Compact and durable, it provides high-precision testing for manufacturing processes, reverse osmosis systems, wastewater treatment, and environmental monitoring.
Hanna Instruments HI99300 Portable Low Range EC/TDS Meter
Key Features & Design Highlights
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IP67 Waterproof Enclosure: Built to withstand harsh field environments, drops, dust, and water intrusion from any direction.
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Specialized HI763063 Probe: A rugged 2-ring probe featuring a built-in temperature sensor and a Quick Connect DIN connector with a rubber coating for a watertight seal.
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Adjustable TDS Conversion Factor: Allows users to adjust the EC-to-TDS conversion factor ($\text{CONV}$) from $0.45\text{ to }1.00$ in $0.01$ increments for tailored industry applications.
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Automatic Temperature Compensation (ATC): Features a customizable temperature coefficient ($\beta$) selectable from $0.0\text{ to }2.4\%/^\circ\text{C}$ for accurate measurements during thermal fluctuations.
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Automatic One-Point Calibration: Simple single-point automatic calibration for EC (at $1413\text{ }\mu\text{S/cm}$) and TDS (at $1382\text{ ppm}$ or $1500\text{ ppm}$).
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Battery Safety & Management: Delivers up to 500 hours of continuous use on 3 AAA batteries. Includes a low-battery indicator, auto-shutoff (selectable at 8 or 60 minutes), and error shutdown to prevent false readings.
Technical Specifications
| Parameter |
Specification |
| EC Measurement Range |
$0\text{ to }3999\text{ }\mu\text{S/cm}$ |
| EC Resolution / Accuracy |
$1\text{ }\mu\text{S/cm}$ / $\pm2\%\text{ F.S.}$ (@ $25^\circ\text{C}$) |
| TDS Measurement Range |
$0\text{ to }2000\text{ ppm (mg/L)}$ |
| TDS Resolution / Accuracy |
$1\text{ ppm}$ / $\pm2\%\text{ F.S.}$ (@ $25^\circ\text{C}$) |
| Temperature Range |
$-5.0\text{ to }105.0^\circ\text{C}$ ($23.0\text{ to }221.0^\circ\text{F}$) |
| Temperature Res. / Accuracy |
$0.1^\circ\text{C}$ / $\pm0.5^\circ\text{C}$ ($\pm1.0^\circ\text{F}$) |
| Calibration |
Automatic, 1-point ($1413\text{ }\mu\text{S/cm}$ for EC; $1382\text{ ppm}$ or $1500\text{ ppm}$ for TDS) |
| TDS Factor / Temp. Coeff. |
$0.45\text{ to }1.00$ (selectable) / $0.0\text{ to }2.4\%/^\circ\text{C}$ (selectable) |
| Probe Included |
HI763063 2-ring EC/TDS/Temp probe with 1 m ($3.3’$) cable |
| Power Supply |
$3 \times 1.5\text{V AAA}$ batteries (~500 hours continuous operation) |
| Dimensions / Weight |
$155 \times 63 \times 30\text{ mm}$ ($6.1 \times 2.5 \times 1.2″$) / $197\text{ g}$ ($6.91\text{ oz}$) |
| Complete Kit Contents |
Meter, HI763063 probe, $1413\text{ }\mu\text{S/cm}$ standard sachet, $1382\text{ ppm}$ standard sachet, 100 mL beaker, 3 AAA batteries, rugged carrying case, calibration certificates, and manual. |
Practical Applications
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Reverse Osmosis (RO) Systems: Verifying water purity and membrane efficiency.
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Industrial Manufacturing: Monitoring low-salinity process water and rinse baths.
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HVAC & Cooling Towers: Assessing low-range conductivity in boiler and condensate water.
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Environmental & Educational Labs: Field testing of freshwater streams, rivers, and drinking water sources.
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