HM Digital Conductivity Meter COM-80 with 0-5000 ppm TDS Range

Description

Product Overview

The HM Digital COM-80 Conductivity Meter is a compact, handheld instrument designed to deliver accurate electrical conductivity (EC) and total dissolved solids (TDS) measurements across a broad range of water applications. Built with a sturdy ABS housing and a clear LCD display, the device offers a measurement span of 0 to 5,000 ppm, a resolution of 1 ppm, and a readout accuracy of ±2 %. Its automatic temperature compensation (ATC) adjusts readings to a standard 25 °C, eliminating the need for manual temperature corrections. Powered by three LR44 batteries, the meter provides up to 500 hours of continuous operation, and its water‑resistant construction meets IPX4 standards, allowing safe use in damp environments. The COM-80 also features four selectable scales—EC in µS and mS, and TDS in ppm and ppt—giving users flexibility to match industry conventions.

Usage

This meter excels in a variety of real‑world scenarios. Hydroponic growers rely on precise EC values to balance nutrient solutions, ensuring optimal plant health and yield. Aquaculture facilities monitor TDS levels to maintain water quality for fish and shellfish, preventing stress and disease. Environmental technicians use the COM-80 for field sampling of rivers, lakes, and groundwater, where rapid, reliable data is essential for compliance reporting. The device’s lightweight design (2.08 oz) and ergonomic shape make it comfortable for extended handheld use, while the intuitive button layout allows quick switching between measurement modes. Whether you are testing irrigation water, brewing solutions, or laboratory‑grade distilled water, the COM-80 delivers consistent results.

Why Choose Us

Choosing the HM Digital COM-80 means selecting a product backed by over a decade of engineering expertise and a reputation for durability. HM Digital manufactures each unit in a controlled environment, applying rigorous quality‑control checks that exceed industry standards. The meter’s calibration is factory‑set, and a simple calibration procedure using a standard solution is provided for users who require periodic verification. Customer support includes a dedicated technical hotline, online resources, and a one‑year limited warranty covering defects in materials and workmanship. By investing in the COM-80, you gain a reliable tool that reduces measurement error, saves time, and supports informed decision‑making across agricultural, industrial, and scientific domains.

Key Features

• High‑precision EC and TDS measurement from 0‑5,000 ppm with 1 ppm resolution
• Automatic temperature compensation ensures accurate readings at any ambient temperature
• Four selectable scales (µS, mS, ppm, ppt) accommodate diverse industry standards
• Water‑resistant, lightweight design for reliable field and laboratory use
• Responsive customer support and one‑year warranty for peace of mind

FAQ

What type of batteries does the COM‑80 require and how long do they last?

The meter uses three LR44 button cells. Under typical usage—continuous measurement and periodic standby—the batteries provide up to 500 hours of operation before replacement is needed.

Can the COM‑80 be used for measuring nutrient solutions in hydroponics?

Yes. The device’s ATC feature and high resolution make it ideal for monitoring EC levels in hydroponic nutrient reservoirs, helping growers maintain optimal solution strength.

Is calibration required and how is it performed?

Factory calibration is pre‑set, but for critical applications you can calibrate using a standard solution (e.g., 1413 µS/cm). Simply immerse the probe, press the calibration button, and follow the on‑screen prompts.

What is the IP rating for water resistance?

The COM‑80 meets an IPX4 rating, protecting it against splashing water from any direction, which is sufficient for most indoor and outdoor testing environments.

How does the meter handle temperature variations?

Automatic temperature compensation (ATC) automatically adjusts the EC/TDS reading to a reference temperature of 25 °C, eliminating the need for manual temperature correction.

With its blend of accuracy, durability, and user‑friendly features, the HM Digital COM‑80 Conductivity Meter stands as a trusted solution for professionals seeking reliable water quality data across a wide range of applications.