Description
| Feature | Specification |
|---|---|
| Model | LT-51 |
| Measurement Parameters | Conductivity, TDS (Total Dissolved Solids), Salinity, Temperature |
| Conductivity Range | 0.01 µS/cm to 200 mS/cm (Auto Ranging) |
| TDS Range | 0 – 100 g/L (based on configurable TDS factor) |
| Salinity Range | 0.0 to 70.0 ppt |
| Temperature Range | 0°C to 100°C (with high-accuracy temperature probe) |
| Resolution | 0.01 for Conductivity, TDS, and Salinity; 0.1°C for Temperature |
| Accuracy | ±1% F.S. for Conductivity/TDS/Salinity; ±0.5°C for Temperature |
| Display Type | Large, backlit graphical LCD with real-time trend visualization |
| Temperature Compensation | Automatic (ATC) and Manual Modes |
| Calibration | Multi-point calibration with auto-recognition of standards |
| Data Memory | Built-in memory for saving previous calibration and test data |
| Electrode Compatibility | Supports interchangeable conductivity cells with multiple cell constants |
| Power Supply | AC adapter + Battery (dual-mode operation) |
| Body Material | Chemically-resistant ABS plastic housing |
| Portability | Bench-top + Portable Field Use |
Product Overview
The Labtronics LT-51 Microprocessor Water Quality Meter is a versatile, professional-grade instrument designed for accurate measurement of conductivity, total dissolved solids (TDS), salinity, and temperature—all in a single, portable unit. Built for labs, environmental monitoring agencies, water treatment plants, and agricultural setups, it delivers fast, stable, and accurate readings for liquid sample analysis.
4-in-1 Multi-Parameter Testing
Instead of relying on separate instruments, the LT-51 combines four essential testing capabilities into one system. Its auto-ranging conductivity measurement intelligently adjusts to various sample strengths—ideal for applications from ultrapure water to industrial effluents. The unit simplifies everything from TDS in filtration systems to salinity in aquaculture setups.
Real-Time Graphical Display
Unlike traditional meters, the LT-51 features a high-contrast, graphical LCD screen. This not only improves visibility in all lighting conditions but also enables real-time tracking of trends, making it easier to spot sudden changes or monitor reaction curves over time.
Temperature Accuracy & ATC
Equipped with automatic temperature compensation (ATC), the LT-51 neutralizes the impact of temperature variation on readings. This makes it especially valuable in field conditions or production environments, where sample temperatures fluctuate. A built-in temperature sensor also allows independent temperature monitoring for routine or research needs.
Flexible Calibration & Probe Support
The LT-51 allows multi-point calibration and auto-recognition of standard solutions, eliminating manual guesswork. Its universal probe compatibility supports various electrode types and cell constants, allowing you to switch between sample types—from freshwater to seawater—without changing the device.
Rugged Design for Lab & Field Use
Designed with chemical-resistant ABS housing, the LT-51 stands up to spills, dust, and rough handling. Its compact footprint and dual power modes (battery and AC) mean it’s equally at home on a laboratory bench or during on-site field assessments.
Smart Memory and Low Maintenance
This instrument includes built-in memory for calibration history and test results, which supports quality assurance workflows and regulatory documentation. The replaceable sensor system and intuitive interface make the unit easy to maintain—even for new technicians.










