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BHB provides a wide range of liquid analyzers using different analysis modules according to the characteristics of the liquids, the components you intend to analyse and the applications that they are designed for.
The range of residual analyzers designed for chlorine combines innovative microprocessor-based electronics and reliable traditional amperometric technology to provide continuous analysis of free or total chlorine or other oxidants in drinking water, wastewater, cooling water and other process water applications.
The Residual Chlorine Analyzer has the task of continuously monitoring the free or total chlorine. From an amperometric method measurement with one or three electrodes allows action in the 20 to 60mg/L range (using or without recourse to reagents).
MEASURING PRINCIPLE:
A sample of the liquid it is delivered to the sample inlet chamber entrance at an approximate rate of 150mL/minute. The excess overflows to drain. The sample then passes to a mixing chamber where pH4 solution is added via the user programmable solenoid valve and mixed with the sample. The buffered sample then passes through an annular space between two electrodes in the sensing cell. As it passes, a small DC current is generated, in direct linear proportion to the amount of residual present in the sample, the residual value is displayed on the dot-matrix display in a 4 ½ digit or graphical format.
COMMON APPLICATIONS:
- Wastewater: Feed-forward dechlorination control and effluent monitoring;
- Industrial wastewater: Effluent control and monitoring;
- Industrial process water: Verification and control of chlorine used in production processes;
- Drinking water disinfection: Continuous monitoring of chlorine residual and controlling of the influent and finished water;
- Food and beverages: Zero verification after carbon filtration;
- Pharmaceutical: Zero verification after carbon filtration process and simplification of the validation procedures;
- Swimming pools: Disinfection and accurate control of chlorine residual;
- Cooling water biofouling: Cost effective control of slime and algae in piping and heat exchangers throughout the system.
KEY FEATURES:
- Large dot-matrix graphical display with automatic ranging capabilities from 0-20mg/L;
- The analyser includes on-screen instructions and self-diagnostics;
- Display resolution is up to 0,001mg/L with an optional graphical viewing mode;
- Six adjustable alarm relays and dual 4-20 mA DC output;
- All user controls are provided through four membrane buttons on the display face;
- The analyser incorporates a constant, direct-drive electrode cleaning system which eliminates signal drift and the need for frequent recalibration;
- The analyser reagent(s) are gravity fed, eliminating the need for a reagent pump;
- Reagents are added with a user programmable solenoid valve to optimize the sample pH and reduce buffer consumption;
- Sample temperature variations are compensated with a thermistor;
- The analyzers are constructed of corrosion resistant materials and are modular in design for serviceability and ease of maintenance;
- Each unit is pre-piped and pre-wired, requiring only field connection to service points. All components and controls are accessible from the front of the unit to permit ease of observation of solution level and sample flow.
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