Sechang Instruments Blog — Industrial Measurement Guides

Field Water Quality Testing: Portable Instruments, Rapid Test Kits, and Field QC Protocols

WAK 팩테스트·DR6000 분광광도계 현장 병행 활용법, 잔류염소·COD·중금속 현장 신속 측정 키트 모델별 비교, 하폐수 처리장·정수장·공단 현장별 추천 수질 검사 구성 가이드.

수질측정 검사키트 WAK DR6000

Jul 21, 2026 · 1,483 words

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

Industrial Flow Meter Types: A Complete Selection Guide for Engineers

산업 현장에서 가장 많이 사용되는 4가지 유량계(용적식, 전자기, 초음파, 코리올리)의 특징과 선정 방법을 실무 엔지니어 관점에서 친절하게 설명합니다.

유량계 계측기 산업장비 실무가이드

Jul 21, 2026 · 1,329 words

Coating Thickness Measurement: Magnetic, Eddy Current, Ultrasonic, and XRF Methods Explained

도막두께측정기의 자기유도/와전류/복합 원리, QNix·Fischer 인기 모델 비교, 현장별 선정 가이드.

두께측정 도막 코팅 도금 품질검사

Jul 21, 2026 · 1,243 words