MIK-ADI3050 Ammonia Nitrogen Electrode

The MIK-ADI3050 is an online ion-selective ammonia nitrogen electrode for real-time monitoring in water. It measures ammonium ions directly without reagents, applies automatic pH and temperature compensation, and outputs data via RS485 (Modbus RTU).

The sensor assembly includes an ammonium ion electrode, a pH electrode and a reference electrode. The ammonium electrode responds to the ammonium ion activity in the water; the pH and temperature readings are used to compensate the result, so the ammonia nitrogen value can be calculated without sample pretreatment or chemical reagents.

No. The MIK-ADI3050 requires no reagents, which means no reagent consumption, no waste liquid and no secondary pollution, and lower running costs than reagent-based analyzers.

It is supplied with an ammonium ion electrode, a pH electrode and a reference electrode. A potassium ion electrode is optional.

Potassium ions are the main interference for ammonium ion-selective measurement. An optional potassium ion electrode allows the potassium concentration to be measured and compensated, which improves accuracy in waters with significant potassium content. Please tell us your water composition so we can recommend the right configuration.

The standard ranges are 0–100 mg/L (WV) and 0–1000 mg/L (WX). Wider ranges are listed in the product data on this page; please tell us your expected concentration so we can confirm the correct version.

The product data on this page lists the error as ±8% at 20% of range, ±5% at 50% of range and ±3% at 80% of range, with repeatability ≤3%. Please contact us to confirm the specification for your selected range.

The output is RS485 with Modbus RTU protocol, so the sensor can be connected directly to a PLC, data logger, controller or IoT gateway.

9–24 VDC, with a supply capable of at least 1 A.

• Housing: POM or 316L stainless steel
• Thread: NPT 3/4

Standard cable lengths are 10 m, 20 m and 30 m, and custom lengths up to 100 m are available.

Typical applications include surface water, reservoirs, natural water, tap water and drinking water, domestic sewage, municipal wastewater treatment and industrial wastewater monitoring.

Yes. The modular design allows easy electrode replacement, which reduces downtime and maintenance costs. Please contact us for spare electrode part numbers.

Ion-selective sensors are generally calibrated with standard solutions of known concentration, or against laboratory results for your water. Because water composition varies, periodic checks against laboratory analysis are recommended. Please contact us for the calibration procedure.

• Immerse the sensor at a representative depth with the electrodes fully submerged.
• Avoid positions with heavy air bubbles, such as directly above aerators.
• Clean the electrodes regularly; deposits and biofilm affect the reading.
• Check the reading against laboratory results and recalibrate when needed.

It can be connected to any Modbus RTU master, such as a PLC, SCADA system or IoT gateway. If you need a controller with display and relays, tell us your requirements and we will recommend a suitable model.

See also the MIK-ADS2000 COD sensor and the MIK-ADI7000 residual chlorine sensor.

To help us select the correct configuration, please provide:

• Application (surface water, sewage, drinking water, industrial wastewater)
• Expected ammonia nitrogen range
• Water temperature, pH and potassium content if known
• Housing material (POM or 316L) and cable length
• Host system (PLC, controller or IoT gateway)
• Quantity

Send your requirements to info@asmik.com or contact us via WhatsApp at +86 13325716921.