알려진 용액으로 pH 측정기 테스트
알려진 용액으로 pH 측정기 테스트
pH 측정기는 용액의 산도 또는 알칼리도를 측정하는 데 사용되는 유용한 도구입니다. 그러나 모든 장비와 마찬가지로 정확한 결과를 얻으려면 올바르게 작동하는지 확인하는 것이 중요합니다. 이 섹션에서는 기능을 검증하기 위해 알려진 용액을 사용하여 pH 측정기를 테스트하는 방법에 대해 설명합니다.
테스트 과정에 앞서 pH의 개념을 이해하는 것이 중요합니다. pH는 용액 내 수소이온의 농도를 나타내는 척도로 0부터 14까지의 값을 갖는다. 용액의 pH가 7이면 중성, pH 7 미만은 산성, pH 7 이상은 알칼리성을 나타낸다.
pH 측정기 테스트를 시작하려면 다양한 pH 수준을 갖는 알려진 용액 세트를 수집하십시오. 이러한 용액은 상업적으로 구입하거나 산성 및 알칼리성 물질을 정확하게 측정하여 제조할 수 있습니다. 철저한 테스트를 위해 pH 4, 7, 10의 용액을 사용하는 것이 좋습니다.
먼저, pH 측정기가 깨끗하고 제조업체의 지침에 따라 보정되었는지 확인하세요. 정확한 측정을 위한 기준선을 설정하려면 교정이 필수적입니다. pH 측정기와 함께 제공된 교정 절차를 따라 교정에 올바른 완충액이 사용되었는지 확인하십시오.
| FCT-8350 유량 트랜스미터 | |
| 측정범위 | 순시유량:(0~2000)m3/h;적산유량:(0~99999999)m3 |
| 유량 | (0~5)m/s |
| 적용 파이프 직경 | DN 25~DN 1000 선택 가능 |
| 해상도 | 0.001m3/h |
| 갱신 간격 | 1초 |
| 정확도 | 2.0레벨 |
| 반복성 | \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\ \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\ \\\\\\\\\\\\\\\\\\\\\\\\\\\±0.5% |
| 프로브 입력 | 범위:0.5Hz~2KHz;전원공급:DC 12V(계측기 공급) |
| 아날로그 출력 | (4~20)mA, 선택용 계측기/송신기; |
| 제어출력 | 반도체 광전계전기, 부하전류 50mA(max), AC/DC 30V |
| 제어 모드 | 순시유량 상하한 경보, 유량 가변주파수 변환 |
| 작동력 | DC24V |
| 소비전력량: | <3.0W |
| 케이블 길이 | 5m; 또는 (1~500)m 선택 가능 |
| 작업환경 | 임시.:(0~50)\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\ \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\ \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\℃;상대습도\\\\\\\\ \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\ \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\ \\\\\\\\\\\\\\\\\≤85% RH(비응축) |
| 보관환경 | 온도:(-20~60)\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\ \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\ \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\℃; 상대 습도:\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\ \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\ \\\\\\\\\\\\\\\\\\\\\\\\\\\≤85% RH(비응축) |
| 보호 수준 | IP65(뒷커버 포함) |
| 차원 | 96mm\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\ \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\ \\\\\\\\\\\\\\\\\\\\\\\\\\\\\×96mm\\\\\\\\\\\\\\\\ \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\ \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\ \\\\\\\\\×94mm (H\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\ \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\ \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\×W\\\\\\ \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\ \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\ \\\\\\\\\\\\\\\\\\\×D) |
| 구멍 크기 | 91mm\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\ \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\ \\\\\\\\\\\\\\\\\\\\\\\\\\\×91mm(H\\\\\\\\\\\\\\\\ \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\ \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\ \\\\\\\\\×W) |
| 설치 | 패널 장착, 빠른 설치 |
pH 측정기가 보정되면 알려진 솔루션을 사용하여 기능을 테스트할 차례입니다. 중성 조건을 나타내므로 pH 7의 용액부터 시작하십시오. pH 측정기 전극을 용액에 담그고 완전히 담그십시오. 측정기가 안정화되도록 하고 화면에 표시된 pH 판독값을 기록해 두십시오. 이상적으로는 7이 되어야 pH 측정기가 올바르게 교정되고 정확하게 작동한다는 것을 확인할 수 있습니다.
| 모델 | EC-8851/EC-9900 고정밀 전도도/비저항 컨트롤러 |
| 범위 | 0-200/2000/4000/10000uS/cm |
| 0-20/200mS/cm 0-18.25M\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\ \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\ \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\Ω | |
| 정확도 | 전도도: 1.5% ;\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\ \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\ \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\ 저항률: 2.0%(FS) |
| 온도. 비교 | 25\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\에 따른 자동 온도 보상 \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\ \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\℃ |
| 오퍼. 온도 | 보통 0\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\ \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\ \\\\\\\\\\\\\\\\\\\\\\\\\\\～50\\\\\\\\\\\\\\\\ \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\ \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\ \\\\\\\\\℃; 고온 0\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\ \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\ \\\\\\\\\\\\\\\\\\\\\\\\\\\～120\\\\\\\\\\\\\\\\\\ \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\ \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\ \\\\\\\\\℃ |
| 센서 | 0.01/0.02/0.1/1.0/10.0cm-1 |
| 디스플레이 | LCD 화면 |
| 현재 출력 | 4-20mA 출력/2-10V/1-5V |
| 출력 | 상한/하한 이중 릴레이 제어 |
| 파워 | DC24V/0.5A 또는 |
| AC85-265V\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\ \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\ \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\±10% 50/60Hz | |
| 작업환경 | 주위 온도:0\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\ \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\ \\\\\\\\\\\\\\\\\\\\\\\\\\\\\～50\\\\\\\\\\\\\\\\ \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\ \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\ \\\\\\\\\\\℃ |
| 상대습도\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\ \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\ \\\\\\\\\\\\\\\\\\\\\\\\\\\≤85 퍼센트 | |
| 치수 | 96\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\ \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\ \\\\\\\\\\\\\\\\\\\\\\\\\\\×96\\\\\\\\\\\\\\\\\\ \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\ \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\ \\\\\\\×72mm(H\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\ \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\ \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\×W\\\\\\\\ \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\ \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\ \\\\\\\\\\\\\\\\\×L) |
| 구멍 크기 | 92\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\ \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\ \\\\\\\\\\\\\\\\\\\\\\\\\\\×92mm(H\\\\\\\\\\\\\\\\ \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\ \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\ \\\\\\\\\×W) |
| 설치 모드 | 내장형 |
다음으로, pH 4의 산성 용액으로 이동합니다. 다시 전극을 용액에 담그고 완전히 잠기도록 합니다. 측정기가 안정되도록 하고 pH 판독값을 기록하십시오. 판독값은 용액의 산도를 반영해야 하며 이상적으로는 4에 가까운 pH 값을 표시해야 합니다. 판독값이 크게 다른 경우 pH 측정기의 전극 또는 보정에 문제가 있음을 나타낼 수 있습니다.
마지막으로 알칼리성 측정기를 사용하여 pH 측정기를 테스트하세요. pH 10의 용액. 전극을 담그고 안정화시킨 후 pH 판독값을 기록하는 동일한 과정을 반복하십시오. 판독값은 용액의 알칼리도와 일치해야 하며 이상적으로는 10에 가까운 pH 값을 표시해야 합니다. 예상 값에서 크게 벗어나면 pH 측정기에 문제가 있음을 나타낼 수 있습니다.
테스트 과정 전반에 걸쳐 pH 측정기를 조심스럽게 취급하고 용액 간의 교차 오염을 피하는 것이 중요합니다. 후속 판독값에 영향을 줄 수 있는 잔류물을 제거하기 위해 각 테스트 사이에 증류수로 전극을 헹구십시오.
결론적으로, 알려진 용액을 사용하여 pH 측정기를 테스트하는 것은 a
