Dissolved Oxygen Monitoring System Reduces Maintenance, Cuts Costs

Combining exceptionally accurate dissolved oxygen measurement with sensor self-cleaning and intelligent communications, the Triton DO8 Self-Cleaning Dissolved Oxygen Monitoring System from Electro-Chemical Devices (ECD) features the Triton DO8 Sensor, the AC10 Air Blast Spray Cleaner and the C-22 Controller.

With a state-of-the-art fluorescence quenching (FQ) sensing element, the breakthrough Triton DO8 Dissolved Oxygen Sensor is ideal for a wide range of municipal and industrial water treatment applications. The trouble-free Triton DO8 Sensor is designed with precision FQ optical technology coupled with intelligent microprocessor-based electronics. The self-monitoring DO8 stores calibration data within the sensor, which minimizes maintenance over long service intervals while providing stable, dependable DO measurement.

The Triton DO8 Sensor is highly accurate, featuring a maximum error rate of less than 2 percent, repeatability of ±0.5 percent and resolution of 0.01 ppm or 0.01 percent saturation. It operates over a wide measurement range with three different outputs from 0 to 20 mg/l (0-20 ppm), 0-200 percent saturation or 0-500 hPa (0-6 psi).

The rugged Triton DO8 Sensor was developed for tough municipal and industrial water treatment environments and is designed to withstand ambient temperatures from -20 to 60°C (0-140°F) and records measurements at temperatures from -5 to 50°C (20-120°F). It withstands pressures up to a maximum of 10 bar (145 psi).

Unlike amperometric sensors, the low-maintenance Triton DO8 has no membranes to replace, no electrolytes to refill and no anode/cathode assemblies to service or replace. The only service required is the simple replacement of the DO8's sensor cap, which lasts two years or longer, and the occasional wiping of the sensor head with a damp rag.

The AC10 Air Blast Spray Cleaner is available as either a single or dual channel system. It helps maintain sensor measurement accuracy in turbid water conditions by preventing the buildup of biofilms and other soft coatings, decreasing sensor maintenance cycles and helping to cut plant operating costs.

The AC10 minimizes inaccurate readings caused by films and coatings that develop over time on sensors, reducing sensor cleaning time and the amount of chemicals used for unnecessary water treatments. The AC10 uses pressurized air to generate an area of high turbulence in the water surrounding the measurement end of the sensor.

The AC10 Air Blast Spray Cleaner uses a highly reliable, high current contactor that assures years of trouble free service. It is available with either a 115 VAC 3.0 Amp or 220 VAC 1.3 Amp Air Compressor. It is housed in a rugged, corrosion resistant, fiberglass reinforced polyester enclosure. Installation options for the AC10 include wall mounting or an optional 2-inch handrail mounting system.

The Triton DO8 Sensor utilizes digital communications to send DO data to ECD's C-22 Controller, which provides a 4-20mA output signal to a water treatment plant's control room. The RS-485 digital signal is nearly immune to common EMI/RFI noise that is typically a problem in many plant environments.

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