The NT6800 Total Nitrogen Monitor determines total nitrogen (TN) in water samples based on the ultraviolet spectrophotometry method for the digestion of alkaline potassium persulfate. Meets current standards HJ/T 102-2003 and HJ 35X-2019, and the measurement data matches well with the national standard method HJ 636-2012 and the hash total nitrogen pre-prepared reagent.

Instrument Features:

● The total nitrogen monitor uses a utility model patented digestion heating device for water quality analysis (Patent No.: ZL 202123039489.8), as well as digestion pipes, related heating devices, and components (Patent No.: ZL 202123039494.9) for water quality analysis, ensuring high-speed, efficient digestion, easy maintenance, low cost, and higher reliability.

● The total nitrogen monitor uses a utility model patented multi-channel valve assembly (Patent No.: ZL 202122638366.X), providing stable and reliable sample injection, accelerating the total nitrogen measurement process, and effectively reducing the time for a single measurement to under 30 minutes.

● Original Hash reagents, with publicly available formulas; Raw materials are low-cost and easy to procure, with simple preparation methods and more precise measurements.

● The total nitrogen monitor offers multiple turbidity compensation methods, allowing users to customize the turbidity compensation coefficient, enhancing the instrument's applicability and flexibility.

● The NT6800 Total Nitrogen Monitor features flexible cleaning modes: customizable cleaning modes reduce maintenance workload and extend intervals even under harsh conditions. A new deep cleaning mode has been added to ensure the digestion pipes are clean and tidy.

● The total nitrogen monitor is equipped with Haxi's advanced Prognosys pre-diagnosis technology and Diagnosis technology, providing users with instant and accurate equipment status information for timely maintenance and fault prevention.
1) Prognosys Prediagnostic Function: Displays on-screen indications for imminent instrument issues and outputs them via digital interfaces, allowing users to take preventive measures in advance. Instructional information provides information needed for planned preventive maintenance and emergency response to unexpected situations, displayed on the screen as a progress bar percentage for easy user identification.
2) Diagnosis self-diagnosis function: can automatically diagnose instrument status, display diagnostic results on the screen, query diagnostic information, and output via digital interface.

Application Areas:

Online total nitrogen monitoring technology plays an important role in multiple fields. It is widely used for pollution source monitoring (including municipal sewage inlet and outlets; industrial sewage outlets); Industrial process water use monitoring; Surface water monitoring.

Technical Specifications
General technical specifications
User interface	Chinese Simplified or English, color touchscreen
Enclosure protection level	IP55 (with the case door closed), for indoor use only
Instrument size	455mm×365mm×805mm (width × depth × height).
Instrument shipping weight	About 28kg (62lb), excluding reagents
Power requirements	100-240VAC,50/60Hz
Rated power	120W
Input/output	1. Digital communication: RS485, Modbus RTU protocol
	2. Relay output: 2 SPDT channels, rated voltage 24 VDC, maximum rated current 3A
	3. Analog signal output: 2 channels 4~20mA, maximum load 500Ω
	4. Digital signal input: 1 channel, bright (10.2~26.4VDC) / off (0~2VDC).
	5. Level sensor input: 2 channels, respectively detecting the sampling cup for waterless and the waste liquid tank for full signals
Measurement Specifications
Measurement range	0~5/10/20/50/100/200 mg/L (The upper limit of the on-site working range meets the requirements of HJ 355-2019, and meets special requirements for industries such as leather and fur processing, citric acid, and sewage discharge into urban sewers).
Indication error	0~5/10/20 mg/L: ±0.1 mg/L or ±5% (the higher);
	0~50 mg/L: ±0.5 mg/L or ±5% (whichever is greater);
	0~100 mg/L: ±1 mg/L or ±5% (whichever is greater);
	0~200 mg/L: ±2 mg/L or ±5% (whichever is greater).
Repeatability	0~5/10/20 mg/L: 0.05 mg/L or 3% (whichever is higher);
	0~50 mg/L: 0.3 mg/L or 3% (whichever is greater);
	0~100 mg/L: 0.5 mg/L or 5% (whichever is greater);
	0~200 mg/L: 1 mg/L or 5% (whichever is greater).
Lower limit of quantification	< 0.2 mg/L
Minimum detection limit	0.05 mg/L
Display resolution	0.1 / 0.01 / 0.001 / 0.0001 mg/L (display bits can be set to 3/4/5 bits).
Other features	1. Built-in sample verification function and can automatically complete calibration and review based on verification results. The expandable quality control module enables verification and reclamation of standard samples at any specified concentration.
	2. Built-in quality control functions, automatically and independently completing zero-point and span checks.
	3. Built-in waste-liquid separation function, capable of analyzing waste liquid and collecting or discharging wastewater from cleaning wastewater

Mailing Address: Building B, No. 168 Jinyan Road, Jianxin Town, Cangshan District, Fuzhou

Postal Code: 350007

Customer Service Hotline: 400-668-8627

Main Line/Fax: 0591-83305533/83305866

Email: fgwater@fuguang.com

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