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YOKOGAWA TB450G NTU-compliant Surface Scattered Turbidity Analyzer |
YOKOGAWA TB450G NTU-compliant Surface Scattered Turbidity Analyzer
The Model TB450G NTU-compliant surface scattered type turbidity analyzer has been designed to indicate turbidity in nephelometric turbidity units (NTUs), which is the unit used worldwide.
It is microprocessor-based and provides superior performance and high reliability. Moreover the improvement of the light source and the photodetecting element enables lower turbidity measurement with a resolution ten times larger than that of the existing surface scattered type turbidity analyzers. In other words, the TB450G can measure turbidity at one tenth the turbidity level that present models can detect.
Features
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Equipped with a microprocessor, allowing provision of advanced performance and high reliability. |
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NTU turbidity unit display is available by right-angled scattering light. |
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Minimum range 0 to 0.1 NTU. |
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Enhanced self-testing functions such as detection of a disconnected lamp, a converter check, and upper and lower limit alarm. |
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Provide with multiple function such as automatic cleaning, universal-range, and automatic zero calibration. |
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Use of surface scattering light measuring method eliminates the measurement errors caused by contamination on the cell port. |
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Provide with measures against air bubbles by signal smoothig. |
Specifications
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Measuring method |
Right-angled Surface Scattering light measuring method conforming to EPA 180.1 and ASTM D1889-88a |
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Measuring range |
0-0.1 to 0-100 NTU, 0-10 to 0-2000 NTU |
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Output range |
3 ranges selectable |
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Analog output signal |
4 to 20 mA DC (Maximum load resistance 550 Ω) or 1 to 5 V DC (Output resistance 100 Ω or less) |
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Digital output function |
RS-232C Communication |
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Contact output |
Maintenance output, Fail output, Range output, Upper or Lower limit alarm (Default), Auto calibration / Auto cleaning (Selectable) |
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Contact input |
Remote range switching |
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Automatic cleaning function |
Water jet cleaning method |
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Automatic calibration function |
Zero-point calibration using zero water |
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Ambient temperature limits |
-5 to 50℃ (Heating protection is required when water sample gets frozen in winter) |
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Ambient humidity limits |
5 to 95 % RH (non-condensing) |
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Measuring water conditions |
Flow rate ; 1.5 to 2 l/m
Temperature ; 0 to 50℃(Ambient temperature +30℃) |
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Power supply |
100/110/200/220 V AC, 50/60 Hz |
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Power consumption |
70 VA or less (Detector and Converter) |
Performance
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Linearity |
Low Range (-L); When the upper limit value of span is 40 NTU or less; ±2 % of the range upper limit or ±0.02 NTU, whichever is greater.
High Range (-H); When the upper limit value of span is 1000 NTU or less; ±2 % of the range upper limit |
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Repeatability |
Low Range (-L): 2 % of the range upper limit or 0.004 NTU, whichever is greater.
High Range (-H): 2 % of the range upper limit. |
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Response Time |
2 minutes or less (90 % response) |
Application
Turbidity of drinking water, sewage water, river and water of used in general processes |
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