Extech EC400 Waterproof Conductivity Meter TDS Salinity Temperature

Description

Product Overview

The Extech EC400 is a compact, handheld instrument designed for fast, accurate measurement of conductivity, total dissolved solids (TDS), salinity and temperature in water and other liquids. Housed in a rugged plastic body that meets IP‑68 waterproof standards, the meter can be immersed in water up to 30 m (100 ft) without damage. It features a clear LCD display, a simple one‑button operation, and a measurement accuracy of ±0.5 % across its full range. The device is powered by four lithium metal batteries that are included and provide up to 500 hours of continuous use.

Usage

Designed for professionals who need reliable water‑quality data in the field, the EC400 excels in agricultural irrigation testing, aquaculture monitoring, environmental sampling, and industrial process control. Its waterproof construction allows use in ponds, rivers, wells, and even in harsh weather conditions. The meter’s lightweight design (0.12 kg) makes it easy to carry in a pocket or tool belt, and the intuitive interface lets users obtain readings in seconds, reducing downtime and improving decision‑making.

Why Choose Us

Extech is a trusted name in measurement technology, and the EC400 reflects the brand’s commitment to durability, precision, and user‑friendly design. The instrument is calibrated at the factory and comes with a one‑year warranty on the meter itself. Extech provides responsive technical support and a comprehensive online knowledge base, ensuring that customers receive assistance whenever they need it. The EC400’s ability to store up to 15 labeled readings and its adjustable conductivity‑to‑TDS conversion factor (0.4‑1.0) give users flexibility that many competing meters lack.

Key Features

• Waterproof IP‑68 rating lets you measure directly in water up to 30 m deep.
• ±0.5 % accuracy provides reliable data for scientific and industrial applications.
• Adjustable conductivity‑to‑TDS ratio (0.4‑1.0) lets you tailor readings to specific standards.
• Four lithium batteries included give up to 500 hours of operation on a single charge.
• Dedicated customer support and a one‑year warranty ensure peace of mind after purchase.

FAQ

What is the measurement range for conductivity?

The EC400 measures conductivity from 0 to 200 µS/cm, covering the needs of most freshwater and low‑salinity applications.

Can the meter be calibrated in the field?

Yes, the EC400 includes a built‑in calibration function that allows you to perform a quick two‑point calibration using standard solutions.

How many readings can be stored and how are they labeled?

The device can store up to 15 readings, each of which can be labeled with a custom identifier (up to 8 characters) for easy reference later.

Is the EC400 suitable for measuring seawater?

While the meter’s primary range is optimized for freshwater, the adjustable TDS conversion factor allows you to approximate salinity in seawater, though for high‑salinity environments a dedicated seawater meter is recommended.

What warranty does Extech provide?

Extech offers a one‑year limited warranty covering the meter itself (excluding batteries), and technical support is available throughout the warranty period.