
Detailed Product Description:
Overview of the Microprocessor-Based Digital Turbidity Meter:
The Model 1341 Digital Turbidity Meter, manufactured by Electronics India (EI), is a sophisticated instrument utilizing a microprocessor-controlled system for measuring water clarity. This device operates as a nephelometer, basing its measurements on the principle of 90° scattered light, which yields results in Nephelometric Turbidity Units (NTU).
This instrument provides highly accurate results with enhanced numerical calculations. It is designed specifically for environmental and scientific applications, ensuring suspension-free water quality, which is crucial for public health, beverage, and food production industries, as well as meeting required minimum limits for drinking water and sewage disposals.
Core Technology and Measurement Principle:
The Model 1341 functions as a microprocessor-based nephelometer meter. The measurement relies on directing a light beam into the sample, where suspended particles scatter the light. The degree of scattering is measured by a detector positioned at a 90° angle relative to the incident light path. This light-scattering technique, known as nephelometry, is the basis for measuring turbidity.
The device uses an IR LED as its light source. Turbidity meters with infrared light sources are generally effective because they minimize or potentially eliminate the influence of coloration present in a sample, although they may lose some sensitivity for very small particles compared to white light meters. The unit adheres to standards by using the Formazine standard solution for turbidity analysis, as mentioned in ISO 7027.
Key Features and User Interface:
The Model 1341 incorporates several features for user convenience and reliable data handling:
• Advanced Display: It features a 16 x 2 line Alphanumeric LCD with a backlit display, providing clear visibility of readings and operational status.
• Intuitive Operation: Measurement controls are managed via 5 Soft Touch Keys.
• Data Retention: The instrument has an internal storage facility for up to 100 samples. Crucially, the calibration settings are retained in the memory even if the instrument is switched off.
• Data Output: For documentation and reporting, the meter supports an External Serial RS232 Dot Matrix Printer attachment.
Applications:
Monitoring turbidity is vital for maintaining water quality across various sectors. The Model 1341 is specifically suited for low-to-medium range measurements essential for quality control.
Primary applications include:
• Drinking Water Quality: Essential for testing drinking water supplies to ensure compliance with safety standards and hygiene. Turbidity measurements are a critical indicator for contaminants and interference with disinfection processes.
• Sewage and Wastewater: Used for monitoring the clarity of sewage disposals and assessing water clarity in treatment processes.
• Laboratory and Research: Providing accurate data for studies requiring precise turbidity measurements.
Technical Specifications (Model 1341):
Parameter
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Specification (Model 1341)
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Model
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1341
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Type
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Microprocessor Based Nephelometer Meter (Digital Turbidity Meter)
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Display
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16 x 2 line Alphanumeric LCD with backlit
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Measurement Principle
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90° Scattered Light Principle (Nephelometric)
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Light Source
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IR LED
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Detector
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Silicon Photodiode
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Range
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0 to 200 NTU in 2 ranges
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Resolution
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0.1 NTU
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Accuracy
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+2% FS + 1 digit
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Calibration Standard
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Formazine standard solution (ISO 7027)
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Sample System
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25mm Clear Glass Test Tubes
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Sample Storage
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Up to 100 Samples
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Data Output
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External Serial RS232 Dot Matrix Printer attachment
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Keys
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5 Soft Touch Keys
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Power Requirement
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230V+10%, 50Hz AC
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Dimensions (Approx.)
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245 x 260 x 125 mm
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Key Features
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Calibration retention in memory after switch off
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