Process details
- Overview
- Flow measurement of blow down water
- Level measurement of hydraulic accumolator
- Temperature measurement after heat exchanger
- Flow measurement of clarified water
- Measurement of filter resistance
- Level measurement of pure water tank
- Flow measurement of preclarified water
- Temperature measurement of ion exchanger inflow
- Quality measurement after anion exchanger
- Quality measurement after anion exchanger 2
- Pressure measurement RO raw water
- Flow measurement of deionate
- Quality measurement deionate
- Flow measurement of reject
- Level measuremt of deionate buffer tank
- Flow measurement of deionate feed to polishing
- Measurement of resin resistance
- Flow measurement of polished feedwater
- Quality measurement deionate
- Level measurement of demineralized water tank
- Flow measurement to feed water system
River water in feedwater treatment
Instrumentation in water treatment
High quality boiler feed-water, having low conductivity, dissolved oxygen, silica and other impurity levels is essential for long boiler and turbine life. The water treatment processes are often designed in multiple steps, the choice of process steps varies and depends on the water quality and process concept. Some water with lower quality requirements can be extracted for example for the cooling towers. Pre-treatment by filtration removes mechanical impurities or solid matter. Ion exchanges remove dissolved ions and further softens the feed-water. For the highest boiler feed-water quality there are further treatment steps - for example using reverse osmosis or EDI. As a final step mixed bed ion exchangers are used for polishing. Removal of dissolved ions like Na, K, Cl, Ca, Mg causes the conductivity to get lower.
Flows can be economically measured within the first treatment steps (up to temperatures of 180 °C) using OPTIFLUX electromagnetic flowmeters. At low conductivities OPTIBAR DP flowmeters or OPTISONC 3400 ultrasonic flowmeters should be used. The OPTIBAR DP 7060 C is ideal for measuring differential pressure across filters, strainers, heat exchangers and ion exchangers. SMARTPAD or OPTISENS are the relevant liquid analysers available.
Requirements
- Insensitive against scaling
Recommended products and solutions
Requirements
- No maintanance
- High moisture
Recommended products and solutions
Requirements
- Process control
Recommended products and solutions
Requirements
- Process control
Recommended products and solutions
Requirements
- No drift
- Overpressure protection
Recommended products and solutions
Requirements
- Process control
Recommended products and solutions
Requirements
- Process control
Recommended products and solutions
Requirements
- Process control
Recommended products and solutions
Requirements
- Installation in pressurized pipe
Recommended products and solutions
Requirements
- Installation in pressurized pipe
Recommended products and solutions
Requirements
- No drift
- Overpressure protection
Recommended products and solutions
Requirements
- Low conductivity
Recommended products and solutions
Requirements
- Measurement with measuring cell
Recommended products and solutions
Requirements
- Corosion resistant
Recommended products and solutions
Requirements
- Process control
Recommended products and solutions
Requirements
- Low conductivity
Recommended products and solutions
Requirements
- No drift
- Overpressure protection
Recommended products and solutions
Requirements
- Low conductivity
Recommended products and solutions
Requirements
- Measurement with measuring cell
Recommended products and solutions
Requirements
- Moisture
- Contact free measurement
Recommended products and solutions
Requirements
- Low conductivity