Boiler house TDS blowdown controls
2
Local regulations may restrict the use of this product to below the conditions quoted. In the interests of development and improvement of the product, we reserve the right to change the specification without notice. © Copyright 2016
TI-P403-96 AB Issue 3
Model 556 / TF56-N Turbidity Monitoring System
Description The Turbidity Monitoring System consists of a TF56-N Turbidimeter and a 556 Converter designed to continuously monitor for oil and grease contamination in make-up water and condensate circulated back to the boiler feedwater system. It can also be used to monitor the supply from mains raw water, demineralisation and reverse osmosis water treatment plants. The turbidimeter is a precise, dual channel, scattered light turbidity monitor that uses light in the visible range (VIS) and Near Infrared Range (NIR) from 400 to 1100 nm. A precisely defined constant light beam penetrates the fluid medium and the light scattered from any particles (trace suspended solids, undissolved liquids or gas bubbles) in the medium is detected by four hermetically sealed silicon photodiodes at an angle of 11 ° . Simultaneously the unscattered light is detected by a reference photodiode. This unique dual channel design compensates for colour and disturbances in the medium. The sensor can measure very low particle sizes and concentrations. The converter has four fixed and one variable measuring range calibrated in ppm, providing continuous, real-time monitoring of a fluid medium’s turbidity. A 3-digit LED indicator displays turbidity as a percentage of the selected measuring range. Two independent set points and a 0-20 mA or 4-20 mA output are provided by the converter for alarms and real-time remote display of turbidity monitoring. An additional failsafe relay output is built in for remote sensing of converter lamp or power failure.
2.4 19
MV11
2-port ball valve
DCV3
Condensate flow
M10S
M10S
500 mm (min)
2-port ball valve
MV11
PN air
Fill
TF56 sensor
M10S
M10S
3.0 ppm alarm relay
100 mm (Sump)
Divert
Bypass
M10S
556 converter
Drain
Principle features: - Real-time process monitoring. - 2 independent alarm set points. - Failsafe relay. - 3-digit LED display. - 0 - 20 or 4 - 20 mA output. - Dual channel compensation design. - Low maintenance. - CIP / SIP compatible. - Compact dimensions. - Reliable, cost effective measurement.
5.0 ppm divert relay
Recommended installation for the 556 / TF56-N turbidity monitoring system
Associated products: - MS10 isolating ball valve. - DCV3 check valve. - Ball valve actuator (BVA). - M21 two-port ball valve. - MV solenoid valve for BVA. - Three-port QL valve.
TI-P403-96 AB Issue 3
Page 1 of 5
Model 556 / TF56-N Turbidity Monitoring System
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