Sechang Instruments Blog

Industrial Measurement Guides & Technical Insights

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COD and BOD Measurement: Methods, Instruments, and Online Monitoring for Industrial Wastewater

COD(화학적 산소요구량)와 BOD(생물학적 산소요구량) 측정 원리 비교, 분광광도계·온라인 COD 분석기 선정 기준, 하폐수 처리장 유기물 부하 실시간 모니터링 방법과 국내 규제 대응 실무 가이드.

수질측정 COD BOD TOC
Jul 21, 2026 · 1,336 words

The Complete Guide to Industrial pH and ORP Meters: Principles, Electrode Selection, and Calibration

Master industrial pH and ORP measurement: electrode types, selection by application (wastewater, chemical, food, electroplating), calibration procedures, troubleshooting, and maintenance best practices.

수질측정 pH ORP 전극 센서
Jul 21, 2026 · 1,283 words

Free Chlorine and Water Hardness Measurement: The Industrial Field Guide

Guide to free chlorine DPD amperometric and water hardness testing for cooling towers boilers and pools

수질측정 잔류염소 경도 정수장
Jul 21, 2026 · 760 words

Special Environment pH Measurement: High Temperature, HF-Resistant, and High-Alkalinity Electrodes

고온/HF/고알칼리 pH 측정 문제와 해결책. 유도식 전도도와 온라인 비중계를 활용한 강산강알칼리 간접 농도 측정 방법.

수질측정 pH 전도도 농도계 비중계
Jul 21, 2026 · 1,043 words

Electrical Conductivity Measurement Guide: Sensors, Cell Constants, and Industrial Applications

Comprehensive guide to conductivity measurement: 2-electrode vs 4-electrode vs inductive sensors, cell constant selection, ultrapure water, boiler feed, cooling towers, and chemical process monitoring.

수질측정 전도도 순수 보일러 도금
Jul 21, 2026 · 1,006 words

Multi-Parameter Water Quality Meters: YSI, Hach, WTW, and Horiba Platform Comparison and Selection Guide

pH, DO, MLSS, 전도도를 동시에 측정하는 KM-2000, MPA48, TRIPOD 시리즈 비교와 현장별 구성 가이드.

수질측정 다항목 인라인 휴대형
Jul 21, 2026 · 1,535 words

Dissolved Oxygen (DO) Meter Guide: Optical vs Electrochemical Sensors for Industrial and Environmental Use

Compare optical and electrochemical DO sensors for wastewater, aquaculture, fermentation, and environmental monitoring. Calibration procedures, maintenance, and application selection guide.

수질측정 용존산소 DO 센서
Jul 21, 2026 · 1,069 words

Online Water Quality Monitoring Systems: Continuous Measurement, Data Telemetry, and Compliance Reporting

Complete guide to online water quality monitoring systems: sensor technologies, system architecture, SCADA integration, TMS regulatory compliance, and maintenance best practices for continuous water quality data.

water-quality monitoring regulatory process-control
Jul 21, 2026 · 2,822 words

Ecotoxicity Testing: Microtox, Daphnia, and Algae Bioassays for Industrial Effluent Monitoring

생태독성 측정의 원리, 국내 규제 강화 동향, Microtox 장비 라인업 비교. 하폐수 방류수 생태독성 관리 실무 가이드.

수질측정 생태독성 Microtox 환경규제
Jul 21, 2026 · 1,214 words

SS and MLSS Measurement Guide: Sensors, Calibration, and Process Control for Wastewater Treatment

SS와 MLSS 측정의 원리, 센서 종류별 장단점, 현장 설치 시 주의사항을 정리합니다. 하폐수 처리장 운영자와 환경 엔지니어를 위한 실무 가이드.

수질측정 SS MLSS 하폐수처리 센서
Jul 21, 2026 · 1,322 words