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General| Model | TB 250 WL |
|---|---|
| Category | Measuring Instruments |
| Manufacturer | Tintometer |
| Display | LCD |
| Light Source | LED |
| Power Supply | 4 x 1.5V AA batteries |
Read manual before use, be aware of risks. Failure can cause injury or damage.
TB 250 WL meets EPA 180.1 criteria, features auto ranging 0.01-1100 NTU/FNU.
Measures turbidity via scattered light detection at 90° using a tungsten lamp.
Instrument is factory calibrated with secondary standards and requires no user calibration before initial use.
Key guidelines and considerations for accurate turbidity measurements and instrument care.
Detailed instructions on vial preparation, handling, and environmental conditions for accurate readings.
Procedures for cleaning vials, caps, and containers to prevent errors and ensure accuracy.
Basic instructions for instrument operation, care, and maintenance.
Initial setup instructions, including battery insertion and operator training importance.
Step-by-step guide for replacing the instrument's batteries, with safety precautions.
Diagram illustrating the instrument's parts and their labels for reference.
Description of the five function keys on the keypad and their operations.
Information on the instrument's automatic power-off function and how to prevent it.
Explanation of the instrument's display screens and operational states.
Detailed steps for taking accurate turbidity measurements, including sample preparation and instrument use.
Procedures for performing user calibration, including when to calibrate and standard preparation.
Guidance on when recalibration is recommended, including factory calibration and frequency.
Detailed steps for conducting a full range calibration using the required standards.
Protocols for preparing and inspecting sample cells for accurate low-level turbidity calibration.
Instructions for transferring calibration standards into sample vials, ensuring proper mixing and handling.
Step-by-step guide for the full range calibration sequence using 1000, 10, and 0.02 NTU standards.
Information on identifying and resolving calibration errors, including checking standards.
Procedure to restore factory calibration if recalibration fails or errors persist.
Details on the recommended EPA-approved standards for accurate instrument calibration.
Techniques for sample preparation and measurement, including degassing and handling different sample types.
Methods for removing air bubbles from samples to ensure accurate turbidity readings, especially for low turbidity.
Procedure for diluting high turbidity samples to bring them within the instrument's measurement range.
Techniques for achieving accurate and repeatable measurements for low turbidity samples.
Importance and methods for indexing sample vials to minimize optical variation and errors.
Step-by-step guide for indexing a single sample vial for consistent measurements.
Instructions for carefully inspecting instrument contents upon receipt to ensure all parts are present.
List of standard items included with the TB 250 WL turbidimeter package.
Part numbers for ordering replacement accessories and consumables for the instrument.
Specifications of the TB 250 WL, including principle, range, resolution, accuracy, and operating conditions.
Definitions of common abbreviations used in the manual, such as NTU, FNU, etc.
Guidance for identifying and resolving common operational issues and error messages.
Explanation of various display icons, warning messages, and error codes for troubleshooting.
Manufacturer's declaration of the product's compliance with relevant European directives and standards.
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