Water / Wastewater 39 Accurate fl ow, level and temperature measurement in a single device for large-scale water chillers


Water engineers, technicians and contractors responsible for large-scale chilled water systems providing refrigerated water will fi nd the dependable dual-alarm FLT93S Series Flow Switch from Fluid Components International (FCI) provides exceptional system monitoring, alarming and switching to keep their cooled water fl owing while avoiding equipment damage and system downtime.


These large, chilled water systems are frequently found in district energy systems. They provide building owners with centralised cooling, and heating too, which serves city business districts, medical and corporate campuses, universities or convention centres by providing more economical, climate-friendly heating, ventilation and air conditioning (HVAC).


No matter the type of district energy plant, FCI’s FLT93S Flow Switch provides liquid fl ow, level and/or temperature monitoring and switching as the chilled or hot water passes from the plant through a network of pipes to the district’s buildings. Once the energy transfer of cooled or heated water occurs at each building, any remaining water fl ows back to the plant for reuse.


FCI’s dual alarm FLT93S Flow Switch Series reliably monitors the fl ow and temperature of liquids, gases, slurries and more. These fl ow switches are valuable where unexpected reductions in liquid or other media fl ow rates leave chillers, pumps and other types of equipment, which are sensitive to dry running conditions, ready to grind to a halt, which can result in process shutdowns that require trouble-shooting, extensive repairs or even equipment replacement.


When Alarm 1 occurs, the FLT93S Switch has detected a liquid low fl ow situation anywhere between 0.003 to 0.9 meters per second (0.01 and 3 feet per second). The Alarm 1 low fl ow alarm can be regarded as a pre-warning signal for the control system or the operator. The system or operator can then decide to keep the water refrigeration system running or decide to shut it down for inspection and potential repair.


If Alarm 2 occurs, it is because the water feed line is either running below the minimum required liquid fl ow rate or actually running dry, this condition is an emergency signal to shut down the refrigeration system immediately. In these situations, equipment damage can occur very quickly. Using a fl ow switch prevents serious or permanent damage to the equipment that will then defi nitely require costly repairs or even replacement.


The advanced FLT93S Flow Switch is a dual- function instrument that indicates both fl ow and temperature, and/or level sensing in a single device. Dual 6A relay outputs are standard and are assignable to fl ow, level or temperature. The FLT93S Switch can be specifi ed in either insertion or inline styles for pipe or tube installation.


FCI fl ow switches are electronic fl ow switches that apply thermal dispersion fl ow measurement technology to provide a highly accurate and repeatable fl ow rate to achieve highly reliable and repeatable setpoint detection. When the fl ow rate is above (high fl ow) or below (low fl ow) the user- defi ned setpoint, electronic fl ow switches trigger an output signal, typically a relay or transistor, to change state.


FCI is the only thermal fl ow switch manufacturer providing sensor temperature compensation to ensure set point accuracy for process temperatures that vary up to ±100°F. The FLT93S Flow Switch is easily fi eld-confi gured or factory pre-set, providing unparalleled fl exibility, accuracy and stability for all multiple process sensing and switching requirements.


The rugged FLT93S Switch is hydrostatically proof pressure tested to 3500 psig [240 bar (g)] at 70°F (21°C). De-rated with temperature, the maximum operation service recommended is 2350 psig [162 bar (g)] at 500°F (260°C). Higher ratings are available with special construction and test certifi cation. Approvals available include SIL, SIL2, FM/FMc, ATEX, CSA, CRN, CE, EAC/TR CU, EQM/ECAS, IECEx and Inmetro.


Highly dependable, FCI’s versatile FLT93S Switches are ideal for applications in many demanding hazardous process industries. They also used extensively with or without SIL2 certifi cation in a wide variety of applications in the food/beverage, mining/milling, pulp/paper, pharmaceutical, water/wastewater treatment and more.


Featuring an all-welded, no-moving parts design, the FLT93S Switches require virtually no maintenance. There is nothing to break, clog or foul requiring continuous maintenance. They are available in various materials: 316L stainless steel, Hastelloy or exotic materials. In addition, these switches offer an exceptionally long life and a low lifecycle cost for superior value.


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60321pr@reply-direct.com WWW.ENVIROTECH-ONLINE.COM


www.myronl.com 760-438-2021


Myron L® Company’s Ultrameter II™ Delivers Fast, Lab-Accurate Readings in a Handheld Instrument


Ultrameter II instruments provide a comprehensive suite of in-situ water quality analysis tools that can replace more costly and less convenient laboratory equipment.


A true, one-handed instrument, model 4P delivers Conductivity, Resistivity, TDS, and Temperature readings quickly and easily with autoranging capabilities resulting in increased reading resolution across a broad range of applications.


The 4P also features three preprogrammed solution models: KCl; NaCl; and Myron L’s own 442 Natural Water™ Standard. Setting the instrument to the solution model that most closely matches the constituents of the analyte yields more accurate results than instrumentation programmed to a single standard. A User mode can also be programmed when sampling a known solution. The result is benchtop accuracy of ±1% of reading in a handheld instrument.


And the 4P is IP67 dust-tight and waterproof, NEMA 6 submersible, and buoyant. Wireless data transfer is possible with bluDock™ option.


Model 6PFCE includes all features of the 4P but adds the ability to measure pH, ORP, and Free Chlorine Equivalent (FCE™).


pH readings are temperature compensated; you can choose to perform a 1-, 2-, or 3-point calibration depending on the range of samples measured to achieve ±.01 pH accuracy. The pH sensor is of a proprietary construction and includes a large potassium chloride solution reservoir for long life.


ORP measurements utilize a 99.9% pure platinum electrode and a reference junction that is shared with the pH sensor. ORP accuracy achieved is ±1 millivolt.


In addition, the 6PFCE features a groundbreaking new way to determine Free Available Chlorine. Get empirical measurements of the chemical activity of a solution without the hassle and subjectivity of colorimetric and test-strip methods. The FCE function is the fast, accurate way to determine the killing power of free chlorine species in water. It employs a proprietary predictive ORP algorithm to determine free available chlorine levels at the actual pH of water, so you know your chlorine treatment is effective.


Calibration and maintenance are simple, and 6PFCE pH sensors are user replaceable making both Ultrameter II models user serviceable.


Live expert technical support is included for the life of all Myron L instrumentation. More information online: ilmt.co/PL/0M0y


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TM 61791pr@reply-direct.com


Professional Wa�r Quali� Management Ins�uments 900 Series


Conductivity, Resistivity, TDS, Salinity, pH, ORP, Flow/Pulse, Temperature, % Rejection, Touchscreen LCD plus Additional Flexible Inputs/Outputs


Ultrameter ll™ E


ORP/Free Chlorine Equivalent (FCE ™ pH


Conductivity Resistivity TDS )


Temperature

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