YOKOGAWA UV700G, User Manual

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<1. Overview>
1-1
IM 12K01B02-01E
1. Overview
1.1 Introduction
GENERAL
Water pollution control laws and regulations require monitoring of wastewater quality to prevent
water pollution in lakes, rivers and enclosed bodies of water. Pollutant load is an index of
water quality standards and is defined as the product of the COD (chemical oxygen demand)
concentration and the wastewater volume. Certain entities are required to measure pollutant
loads and comply with the limits.
Among various methods for COD measurement, automatic ultraviolet absorption spectrometry is
the ideal choice on the whole since it provides high correlation between analyzer and laboratory
results, measurement continuity and maintainability.
The UV700G Ultraviolet (UV) analyzer is an instrument for continuous on-line measurement
using the same cell length modulation method as its predecessor UV400G.
It provides improved operability through a wide measuring range and touch screen interface, high
reliability and excellent maintainability.
FEATURES
• Graphic LCD with touch screen on the converter provides easy interactive operation.
• Detector uses the rotary cell length modulation method. Zero check is performed at the time
of minimum cell length, virtually eliminating zero drift.
• Continuous cell cleaning with unique wiper system, allowing long term, stable
measurement.
• Analyzer covers a wide measuring range:
from 0-0.1 Abs to 0-5.0 Abs.
• Flow-through cell type for easy maintenance.
• Data memory function for transferring data to a PC via an optional compact flash (CF) card.