ORIFICE TYPE STEAM FLOW METER THERMAX LIMITED C&H, SERVICES SBU
MONITORING IS THE FIRST STEP TO SAVING MONEY Steam measurement objectives � To ensure steam generated by the boiler fulfils its design norms � To establish steam consumption of the plant � To estimate / establish steam consumption per batch of product � To establish product/process specific steam consumption � To establish steam losses, if any in process/plant � To save money by plugging the losses COMMITTED TO DELIVER INNOVATIVE ENERGY SOLUTIONS
MONITORING IS THE FIRST STEP TO SAVING MONEY Methods of measurement � Orifice plate with differential pressure transmitter (DPT) � Velocity proportional to Square Root of DP � Vortex type � Based on vortex shedding � Flow to be fully turbulent � High Cost � Frequent Calibration Required COMMITTED TO DELIVER INNOVATIVE ENERGY SOLUTIONS
MONITORING IS THE FIRST STEP TO SAVING MONEY Principle of Operation When steam passes through a restriction like an orifice plate installed in � a pipeline, pressure drop occurs. A Differential pressure transmitter measures DP across the orifice Steam flow is proportional to square root of this pressure drop � Density of a compressible fluid like steam is a function of pressure and � temperature The above input is taken in to computation unit by providing pressure � and temperature sensors The steam flow indicated is fully compensated for variation in density due � to temperature and pressure variations. Mass flow is calculated and values for both instantaneous and totalised � steam mass flow displayed COMMITTED TO DELIVER INNOVATIVE ENERGY SOLUTIONS
MONITORING IS THE FIRST STEP TO SAVING MONEY Flow meter Selection Criteria Online density compensation � Ease of maintenance � Flow range � Line size � Steam pressure � Steam quality – Dryness fraction of saturated steam � Power supply � Turndown � Accuracy � Mass flow computation � Ease of Calibration at site � Display requirement – Remote / multi-channel / PLC � Low cost � Large LED display � IBR certification � Tamper proof programming � Vast & reliable service network � COMMITTED TO DELIVER INNOVATIVE ENERGY SOLUTIONS
MONITORING IS THE FIRST STEP TO SAVING MONEY Typical Schematic Condensate pot RTD Steam line Orifice plate Pressure Transducer Computational & display unit Differential pressure transmitter COMMITTED TO DELIVER INNOVATIVE ENERGY SOLUTIONS
MONITORING IS THE FIRST STEP TO SAVING MONEY Installation of RTD ∠ 45° Steam D flow 5 x D COMMITTED TO DELIVER INNOVATIVE ENERGY SOLUTIONS
MONITORING IS THE FIRST STEP TO SAVING MONEY Material of Construction � Orifice plate SS 316 � Impulse tubing SS 304 � Flanges ANSI 300#, WNRF, IBR � Condensate pots ASTM A106 Gr B, IBR � Isolation valves CS, IBR � Three way manifold SS 304 � Needle valve with plugs SS 304 � Compression ferrule fittings SS 304 � RTD sensor - Thermowell SS 304, IBR � Adaptor/Tee/Cross/Coupling SS304 COMMITTED TO DELIVER INNOVATIVE ENERGY SOLUTIONS
MONITORING IS THE FIRST STEP TO SAVING MONEY Computational & Display Unit Display – 4 digit (instantaneous) / 6 digit (Totalized), o.5 inch height x 7 segment LED with programmable decimal point position Mounting – Wall mounting Protection class – IP 65 equivalent Enclosure – Aluminium Die-cast Operating Ambi temperature – 50 deg C Maximum media temperature – 600 deg C Maximum media pressure – 100 bar COMMITTED TO DELIVER INNOVATIVE ENERGY SOLUTIONS
MONITORING IS THE FIRST STEP TO SAVING MONEY Power Supply & Display options � Power supply options � 240V/ AC/50 / 60 HZ � 115 V AC 50/60HZ - Optional � Display instantaneous & totalized � Remote, wall mounted as standard � PLC connectivity on request COMMITTED TO DELIVER INNOVATIVE ENERGY SOLUTIONS
MONITORING IS THE FIRST STEP TO SAVING MONEY Advantages Equipped with on-line density compensation � Displaying instantaneous, Totalized flow, steam pressure & � steam temperature Special computer designed orifice plate ensure accurate � measurement SS tubing and compression fittings – easy to install � High accuracy, moderate turn down, at low cost � Accuracy can be maintained at +/- 0.25% on full scale � Large 7 segment LED display, easy to read � Featured with indication of superheated or wet steam when � the temperature crosses +/- 7 deg C from saturation level Supplied with SMPS which can accept wide voltage � variation from 85 to 265 V Featured with error diagnostics with alarm � output as option COMMITTED TO DELIVER INNOVATIVE ENERGY SOLUTIONS
MONITORING IS THE FIRST STEP TO SAVING MONEY USP of Thermax Steam flow meter Rugged design, fit & forget type � 3 level password protection ensures no tampering by unauthorized persons � User friendly programmable display unit, hence easy to install & recalibrate � at site User has 4 alternatives for density compensation thus ensuring flow � measurement even if one of the component fails. The alternatives include, Pressure compensation � Temperature compensation � Pressure &temperature compensation � Uncompensated mode � Low cost solution with accurate flow measurement � Retransmission to PLC/PC on MODBUS RTU protocol, RS232 or RS485 � Zero maintenance cost due to zero moving part � COMMITTED TO DELIVER INNOVATIVE ENERGY SOLUTIONS
MONITORING IS THE FIRST STEP TO SAVING MONEY Any feedback please contact, info.c&hservices@thermaxindia.com THANK YOU COMMITTED TO DELIVER INNOVATIVE ENERGY SOLUTIONS
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