Photometric analytical system for determining the chemical oxygen demand following the DIN dichromate method
1: Analyzer (cabinet version without hoses)
1 Reagent pump (P2), inlet from canister7 Rinse outputs (wastewater, chromate waste,
2 Display and temperature indicatoroverflow)
3 Serial interface RS 2328 Reagents, standard
4 Reactor unit9 Valve V3
5 Valve V4 10 Valve V2
6 Cover (broken open in the graphic)11 Valve V1 12 Sample and sulfuric acid pump P1
Inlet to the sample pump:
?Valve V1
–Front hose: sample inlet
–Rear hose: inlet from valve V2 (0 mg/l O2standard or standard)
?Valve V2
–Front hose: inlet from canister with standard
particular, CA71 is designated for:
Monitoring sewage treatment plant outlets
Monitoring the sewage treatment plant inlet
Estimating the oxygen demand in the aeration basin
Monitoring of industrial wastewater
Monitoring the discharge of industrial wastewater
