online ammonia nitrogen sensor

1.Online ammonia nitrogen sensorapplication environment description

online ammonia nitrogen sensor is a device for measuring the concentration of ammonia nitrogen in water [in the form of free ammonia (NH3) and ammonium ion (NH4+).Used for measuring the concentration of ammonia nitrogen in environmental water, it can meet the measurement requirements of ammonia nitrogen in most industrial environments. Signal output: RS485 (MODBUS)

The electrode is a composite electrode, consisting of a working electrode and a reference electrode made of polyvinyl chloride and ion-active substances. The internal signal isolation technology has strong anti-interference performance.

It has the characteristics of fast and accurate measurement and easy operation.

2. Technical performance and specifications of online ammonia nitrogen sensor

1. Technical parameters of online ammonia nitrogen sensor

Measuring principle	Ion Selective Electrode Method
Signal method	RS485 (MODBUS-RTU)
Measurement resolution	1-100mg/l
measurement accuracy	±1mg
shell material	ABS
cable length	Standard 5 meters
Supply voltage	12-24VDC (0.4W@12V)
Calibration method	Single point calibration
Measurement environment	Temperature 0~50℃ (no freezing)
waterproof level	IP68
Installation	Immersion installation, NPT3/4 thread

2. Online ammonia nitrogen sensor dimensions

3. Online ammonia nitrogen sensor installation and electrical connection

1. Online ammonia nitrogen sensor installation

2. Electrical installation

The cable is a 4-core shielded cable, line sequence definition: Red - power line (12~24VDC)

Blue - Ground (GND)

Yellow-485A

The cable colors may vary slightly due to different production batches. Please refer to the cable silk screen for details. Before powering on, please carefully check the wiring sequence to avoid unnecessary losses due to wiring errors.

4. Online ammonia nitrogen sensor maintenance and care

1. Use and maintenance

In order to obtain the most stable results, it is recommended to immerse the ion selective electrode in a standard solution (usually 100ppm) for 10-15 minutes before measurement until the reading is stable.

In order to obtain high-precision results, it is recommended to repeat these steps: remove the electrode from the standard solution, rinse, blot dry, and then immerse in the standard solution (immerse for at least 2 minutes to obtain a stable reading) to ensure that the electrode is properly rinsed and pre-conditioned.

When the electrode is used for the first time or after long-term storage, it needs to be soaked in the standard solution overnight or even 48 hours to get a stable reading. After pretreatment, spray the electrode with deionized water and carefully dry it with absorbent paper instead of wiping it dry.

Place the sensor vertically when not in use and do not place it horizontally for a long time.