ホーム製品イオン選択電極

イオン選択電極

The Ion-Selective Electrode (ISE) Online Sensor is a probe-type intelligent sensor. It features compensation for temperature, pH, and interfering ions, and adopts an RS485 interface with standard Modbus protocol. The sensor enables in-situ measurement without the need for reagents or sample pre-treatment, offering low maintenance and high operational efficiency.

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製品概要

The measurement principle of ion-selective electrodes (ISEs) is based on the relationship between the activity and concentration of ions in an electrolyte solution. An ISE typically consists of two electrodes: a working electrode and a reference electrode. The working electrode selectively responds to the target ion, while the reference electrode provides a stable potential as a reference.

The working electrode is usually coated with a selective membrane that exhibits a specific response to a particular ion. When the target ion interacts with the selective membrane, a change in electric potential is generated. By measuring this potential change, the concentration of the ion can be determined.

where:

Z — ionic charge number;
“±” — “+” for cations and “–” for anions;
a — activity of the measured ion.

イオン選択電極技術仕様

動作原理	Ion selection electrode method
Measurement factors	NH4N			Na+		NO3N	F-	Cl-
製品モデル	ISE NH4N-100	ISE NH4N-200	ISE NH4N-210	ISE Na-200	ISE Na-210	ISE NO3N-200	ISE F-200	ISE Cl-200
Measurement factors	Ammonia nitrogen, temperature	Ammonia nitrogen, pH, temperature	Ammonia nitrogen, pH, K+, temperature	Na+, pH, temperature	Na+, pH, ammonia nitrogen, temperature	nitrate, Cl-, temperature	F-, pH, and temperature	Cl-, pH, temperature
Measurement range（mg/L）	0.1~1000	0.1~1000	0.1~1000	0.1~1000	0.1~1000	0.1~1000	0.1~10000	3~30000
	/	pH 0~14	pH 0~14	/	/	/	pH 0~14	pH 0~14
	Temperature 0~50 °C	Temperature0~50 °C	Temperature0~50 ℃	Temperature0~50 ℃	Temperature0~50 ℃	Temperature0~50 ℃	Temperature0~50 ℃	Temperature0~50 ℃
再現性	≤2%、<0.1pH、≤0.3℃			≤2%、≤0.3℃
測定精度	±5%or±0.1mg/L；Temperature < 0.3°C	±5% or ±0.1mg/L;<0.1pH； Temperature < 0.3°C		± 10% or ± 0.1mg/L; Temperature < 0.3°C				± 10% or ± 0.5mg/L temperature < 0.3°C
Compensation Scope:	/	pH 4~10	pH 4~10K+；<100mg/L	NH4N+<100mg/L	/	Cl-<1000mg/L	pH 3.5-5	/
Low concentration drift (24h)	±1%F.S
レンジドリフト（24時間）	±3%F.S
検出限界	0.1mg/L	0.05mg/L		0.05mg/L	0.1mg/L		0.1mg/L		3mg/L
決議	0.01mg/L
保護レベル	IP68
通信インターフェース	RS485、標準Modbusプロトコルボーレート9600 アドレスビットデフォルト50
寸法：	(φ33*146)mm, cable 10 meters (can be customized)	(φ50*251)mm, cable 10 meters (customizable)	(φ60*270)mm, cable 10 meters (can be customized)	(φ60*270)mm, cable 10 meters (can be customized)	(φ50*251)mm, cable 10 meters (customizable)	(φ60*270)mm, cable 10 meters (can be customized)	(φ50*251)mm, cable 10 meters (customizable)	(φ50*251)mm, cable 10 meters (customizable)
素材	316Lステンレス鋼/PVC/チタン合金（オプション
重量	0.2KG	2KG	1KG	2KG	1KG	2KG	1KG	2KG
取り付けネジ	上端NPT3/4ネジ
動作電圧	9~36V DC
MTBF	≥ 1440h/回
消費電力	0.5w
校正期間	1~3 months (depending on the water quality environment on site)
職場環境	（0~50）℃

多様な産業分野での応用

Environmental Surface Water,
Municipal Wastewater
Aquaculture Water
Industrial Process Water

主な特徴イオン選択電極

Each electrode can beindependently replaced, ensuring simple operation and low maintenance requirements.
Fast response time, enabling real-time detection of ions in water.
Corrosion-resistant housingwithIP68 waterproof rating, suitable for long-term underwater operation.
RS485 communication interfacewith thestandard Modbus protocol, facilitating easy system integration.

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