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Extech EC400 Conductivity Total Dissolved Solids(TDS) Salinity Temperature Meter

Extech EC400 Conductivity Total Dissolved Solids(TDS) Salinity Temperature Meter

The Extech EC400 is an ideal device for measuring quantities of liquids. It is highly accurate, an...

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Product Information

Full details

The Extech EC400 is designed for professionals and hobbyists who need to accurately measure conductivity, Total Dissolved Solids (TDS), salinity, and temperature in liquids. Its primary benefit is its versatility and user-friendly design, allowing for easy electrode changes and clear readings on its bar-graph display. A potential caveat is its specific measurement ranges, which may not suit ultra-high purity water applications. Key features include multi-parameter measurement, a watertight (IP67) design, and data storage capabilities.

All features

Model Part NumberEC400
BrandExtech

Extended Product Information

FAQs

What are the four parameters measured by the Extech EC400?

The Extech EC400 measures Conductivity (EC), Total Dissolved Solids (TDS), Salinity, and Temperature.

What is the measurement range for Conductivity?

The conductivity measurement range is 0 - 19.99 mS/cm.

How is the device powered?

The Extech EC400 is powered by 4x CR2032 batteries, which are typically supplied with the product.

Is the device suitable for use in wet environments?

Yes, the Extech EC400 has a watertight design with an IP67 rating, making it suitable for use in wet conditions.

Can I store measurement data?

Yes, the device features a storage function that allows you to save measurement values.

What is the accuracy of the EC400?

The accuracy for conductivity, TDS, and salinity is ±2% of the reading. Temperature accuracy is ±0.1°C.

How do I clean the electrode?

Rinse the electrode with distilled water after each use. For tougher residue, use a soft brush and mild soap, followed by a thorough rinse. Avoid abrasive cleaners.

Troubleshooting

Device does not turn on.

Ensure the 4x CR2032 batteries are correctly installed and have sufficient charge. Replace batteries if necessary.

Inaccurate or unstable readings.

Clean the electrode with distilled water. Recalibrate the device if calibration is supported and necessary for your application. Ensure the electrode is fully submerged and the reading has stabilized. Check for interference from extreme temperatures or chemical factors outside the device's operating range.

Display shows 'OL' or blinking.

This indicates that the measured value is outside the device's measurement range. Check if the sample concentration exceeds the EC 19.99mS/cm or TDS 999ppm limits. Dilute the sample if necessary.

Electrode appears damaged.

Visually inspect the electrode for any cracks or physical damage. If damaged, replace the electrode with a compatible Extech replacement.

Pros and Cons

Pros

  • Measures four essential water quality parameters in one device.
  • IP67 watertight rating provides excellent durability in various conditions.
  • Easy-to-change electrode simplifies maintenance.
  • Integrated data storage function is useful for tracking measurements.
  • Compact and lightweight design enhances portability.

Cons

  • Measurement ranges might be limiting for specialized applications (e.g., ultra-pure water).
  • Accuracy of ±2% may not be sufficient for highly critical laboratory work.
  • Relies on CR2032 batteries, which require periodic replacement.
  • Bar-graph display is supplementary to numerical readings and may not be primary for all users.

Setup, Compatibility & Care

Setup:

  1. Battery Installation: Open the battery compartment and insert 4x CR2032 batteries, observing correct polarity.
  2. Electrode Preparation: Ensure the electrode is clean and properly seated. If stored dry, rehydrate the electrode tip as per manufacturer recommendations (if applicable).
  3. Measurement: Immerse the electrode into the liquid to be measured. Allow the reading to stabilize before noting the value.

Compatibility:

  • The EC400 is designed for measuring aqueous solutions. It is compatible with fresh water, salt water, and solutions within its specified TDS and conductivity ranges.
  • Operating temperature range: 0°C to +50°C.

Care and Maintenance:

  • Cleaning: After each use, rinse the electrode thoroughly with distilled or deionized water. For stubborn residues, use a soft brush and mild soap solution, followed by a thorough rinse. Do not use abrasive cleaners.
  • Storage: Store the EC400 in a cool, dry place. It is recommended to store the electrode tip moist (e.g., in a storage solution or distilled water) to maintain its responsiveness. Ensure the device is dry before storing, especially after use in wet conditions.
  • Electrode Replacement: The electrode is designed to be user-replaceable. Follow the specific instructions provided with the replacement electrode to ensure proper installation.

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