(Waterproof) TDS tester with Temp. Display & Replaceable Electrode in Noida
Erma Waterproof and portable TDS Tester (TDS-035)
A TDS Meter (Total Dissolved Solids Meter) is a handheld electronic device used to measure the concentration of dissolved solids (salts, minerals, and impurities) in water. It provides a quick and convenient way to check water purity and ensure water quality for drinking, aquariums, hydroponics, industrial processes, and laboratory use.
Purpose: Measures the TDS value in parts per million (ppm) or milligrams per liter (mg/L), indicating the total amount of dissolved substances in water.
How It Works: A TDS meter functions by measuring the electrical conductivity (EC) of water, since dissolved salts and minerals increase conductivity. The meter then converts this conductivity into a TDS value.
Design:
· Compact, pen-style or pocket-sized device
· LCD or LED display for easy reading
· Some models include temperature measurement and Automatic Temperature Compensation (ATC) for accuracy
Measurement Range (Typical):
- 0 – 9,999 ppm (basic models)
- Professional models (like the Erma TDS-035) go up to ~19,990 ppm
Applications:
· Drinking water testing (checking if water is safe or within WHO/ISI limits)
· Aquarium maintenance (fish and coral health)
· Hydroponics and agriculture (nutrient balance in water)
· Swimming pools and spas (monitoring water balance)
· Industrial & lab use (boilers, cooling towers, research)
Advantages:
· Portable and easy to use
· Quick results in seconds
· Affordable and reliable for routine checks
Key Features of a TDS Meter
Measurement of TDS (Total Dissolved Solids): Displays dissolved salts, minerals, and impurities in ppm (parts per million) or mg/L.
Wide Measuring Range:
· Typically, 0 – 9,999 ppm (basic models)
· Advanced/professional models can measure up to 19,990 ppm.
Digital Display:
· Clear LCD/LED screen showing TDS values.
· Some models show temperature and TDS simultaneously.
Temperature Measurement
· Measures water temperature in °C/°F.
· ATC (Automatic Temperature Compensation) ensures accuracy under varying conditions.
High Accuracy & Resolution
· Accuracy usually ±2% of reading.
· Resolution often 1 ppm (basic) or 10 ppm (wide-range models).
Portable & Lightweight Design: Pen-style or pocket-sized, easy to carry and use in the field.
Easy to Use
· Just dip the sensor in water and read the value instantly.
· One-button or simple interface.
Replaceable / Durable Electrodes (in some models): Allows maintenance and longer service life.
Power Source: Runs on small button cell batteries (1.5V AG-13/ LR44) or rechargeable options.
Waterproof / Splash Resistant (Optional): Certain models are IP-rated or waterproof, making them durable for field use.
Calibration Feature: Some meters allow manual or automatic calibration using standard solutions.
Auto Shut-Off Function: Saves battery by turning off automatically after a few minutes of inactivity.
👉 In summary: A TDS meter is compact, easy to use, and gives instant readings of water purity, often combined with temperature measurement and compensation features for higher accuracy.
