Sechang Instruments Blog

Industrial Measurement Guides & Technical Insights

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Industrial Gas Detection: Sensor Technologies, Confined Space Safety, and Emissions Monitoring EN

산업용 가스 감지기(VOC, H2S, LEL, O2, 복합), PID 방식 VOC 측정기 선정 원리, 밀폐공간 복합가스 안전 모니터링, 분진 및 실내공기질 측정기 실무 선정 가이드.

대기측정 가스 VOC 분진 안전
Jul 21, 2026 · 1,368 words

Colorimeter and Spectrophotometer Guide: Principles, Selection, and Industrial Applications EN

Colorimetry and spectrophotometry are fundamental techniques for industrial water quality analysis. This guide covers instrument selection, measurement principles, calibration, and key applications including ammonia, phosphorus, and heavy metal detection.

색도계 색도측정기 분광광도계 수질측정 색도기준
Jul 21, 2026 · 957 words

ORP Meter Guide: Oxidation-Reduction Potential Measurement, Electrode Selection, and Industrial Applications EN

Complete guide to ORP (Oxidation-Reduction Potential) measurement: electrode technology, calibration standards, disinfection control, wastewater BNR process control, chemical treatment endpoint detection, and online monitoring systems.

water-quality electrochemical process-control
Jul 21, 2026 · 2,824 words

TOC Analyzer Guide: Total Organic Carbon Measurement Methods, Instrument Selection, and Industrial Applications EN

Complete guide to TOC (Total Organic Carbon) analyzers: measurement methods (combustion vs UV-persulfate), online monitoring for pharmaceutical and industrial water, TOC vs COD correlation, and instrument selection criteria.

water-quality laboratory pharmaceutical process-control
Jul 21, 2026 · 2,280 words

Ion Selective Electrode (ISE) Guide: Fluoride, Nitrate, Ammonium, and Heavy Metal Measurement in Water EN

Complete guide to Ion Selective Electrodes (ISE): fluoride, nitrate, ammonium, and heavy metal measurement in water — membrane types, TISAB preparation, calibration methods, and common error prevention.

water-quality electrochemical laboratory
Jul 21, 2026 · 2,421 words

Turbidity Measurement Guide: NTU, Optical Sensors, and Applications in Drinking Water and Wastewater EN

Complete guide to turbidity measurement: NTU vs FNU, nephelometric vs transmitted-light methods, formazin calibration, and instrument selection for drinking water, wastewater, and ultrapure water applications.

Jul 21, 2026 · 1,827 words

Electromagnetic Flow Meter Guide: Faraday Principle, Electrode and Liner Selection, and Industrial Applications EN

Complete guide to electromagnetic flow meters: Faraday induction principle, electrode and liner material selection for corrosive and abrasive fluids, installation requirements, and application comparison.

Jul 21, 2026 · 1,626 words

Ultrasonic Flow Meter Guide: Transit-Time vs. Doppler, Clamp-On Installation, and Industrial Applications EN

Complete guide to ultrasonic flow meters: transit-time and Doppler principles, clamp-on vs insertion vs inline spool installation, and application comparison with electromagnetic flow meters.

Jul 21, 2026 · 1,526 words

Arsenic in Water: Field Test Kits vs. ICP-MS — When to Use Which EN

Arsenic (As) exceeding 0.01 mg/L in drinking water poses serious health risks. Learn when to use portable field test kits versus laboratory ICP-MS analysis — with a cost-comparison table and recommended two-step screening workflow.

water-quality heavy-metals arsenic field-testing environmental-compliance
Jul 21, 2026 · 950 words

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

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

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

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

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

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