Instrument principle
This automatic monitoring device is developed based on the national standard GB7467-87 "Determination of Hexavalent Chromium in Water Quality - Diphenylcarbazide spectrophotometric method" and incorporates our company's years of dedicated research and achievements in the field of environmental analysis instruments. It is an intelligent water quality monitoring device. The instrument reacts hexavalent chromium with diphenylcarbazide in acidic solution to produce a purple red compound, which is then measured by spectrophotometry at a specific wavelength to determine the content of hexavalent chromium (total chromium) in water.
Application scope
This automatic monitor is widely used for monitoring industrial sewage, domestic sewage, Rivers and Lakes, surface water, tap water and other water bodies.
Technical Parameter

project	specifications	project	specifications
test method	Diphenylcarbazide spectrophotometric method
Detection range	（0～5）mg/L， Scalable	MTBF	≥ 720h/time
accuracy	±10%	communication interface	RS485/RS232、（4～20）mA
repeatability	±5%	Insulation impedance	Above 20M Ω
zero drift	Within ± 5% of the measuring range	Power Supply	AC（220±22）V，（50±1）Hz，5A
Span Drift	Within ± 5% of the measuring range	power waste	150W
Measurement period	（20~50）min	Size	1470mm×550mm×450mm