Ammonia nitrogen in water refers to the free ammonia present in the form of ammonia, mainly from Domestic wastewater nitrogen-containing organic compounds by the decomposition products of the action of microorganisms, coking ammonia and other Industrial waste water, as well as agricultural drainage.Ammonia nitrogen content in water is high, fish exhibit toxic effects in humans and different degrees of harm.Determination of Ammonia nitrogen content helps evaluate the water is polluted and the "self-purification" status, thus Ammonia nitrogen is an important indicator of water pollution characterization.

Features:
Instruments complete digestion than one color, simple and reliable structure, reducing potential errors.
Imported modified PTFE transparent hose, diameter greater than 1.5mm, reducing the chances of blockage of water-like particles.
Can automatically clean sampling pipes to prevent algae or biofilm formation.
Error reset and power off the call, the instrument automatically discharge the residual reactants instrument automatically return to work status.
Low failure rate, maintenance, less reagent consumption.
Intelligent self-diagnostics, alarm, equipment management and maintenance very convenient.
Imported PLC control devices to reduce environmental interference and equipment failure.
Multi-channel valve, strong corrosion resistance, long life, safe and reliable.

Applications:
Adapted Ammonia nitrogen in the 0.1 ~ 300mg / L range of wastewater, according to the actual requirements, high calcium and magnesium ions, chlorine or turbidity measurements might interfere.
Online monitoring of industrial wastewater pollution.
Online monitoring of industrial process water.
Municipal sewage Water treatment plant Online monitoring of water quality and export.
Rivers, lakes and reservoirs, groundwater quality monitoring Online.

Technical Parameters:
Model: DH311N1
Methods based on: HJ / T 101-2003 "Ammonia nitrogen water quality automatic analyzer technical requirements" - salicylic acid spectrophotometry Measuring range: 0.1 ~ 300mg / L Ammonia nitrogen
Accuracy: Indication error ≤ ± 10%
Repeatability error: ≤ ± 10%
Measuring cycle: the minimum measurement period of 20min, according to the actual water samples can be arbitrarily modified 5 ~ 120min digestion time.
Sampling period: time interval (20 ~ 9999min adjustable) and the whole point measurement mode correction: timing instrument sensitivity and zero calibration calibration period: 1 to 99 days at any arbitrary time interval adjustable maintenance cycle: Usually once a month, every views about 30min
Analog output: 4 ~ 20mA
Signal interface: RS232
The actual water samples Contrast: Error ≤ ± 10%
MTBF: ≥720h / time environmental requirements: Recommended temperature + 5 ~ 28 ℃; humidity ≤90% (non-condensing)
Dimensions: 1420 × 500 × depth width 400 (mm)
Power: AC220 ± 10% V, 50 ± 10% Hz, 5A
Other: abnormal alarm and power without losing data; touch-screen display and command input; abnormal reset and power off the call, the instrument automatically discharge the residual reactants is automatically return to work status