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WA9601-SP 981105LANDMARK STRUCTURES, INC. 1665 Harmon Road Fort Worth, Texas 76177 (817) 439-8888 Fax (817) 439-9001 TO: Shimek, Jacobs & Finklea 8333 Douglas Avenue, Suite 820 Dallas, Texas 75225 LETTER OF TRANSMITTAL Date Attn: Re: JJob. No, 11/5/98 9802 Mr. Gary C. Hendricks, P.E. Wagon Wheel Ranch 2.0 MG Elevated Storage Tank Bid No. Q 0198-03 City of Coppell, Texas WE ARE SENDING YOU THE ATTACHED ITEMS: Copies Spec Section Submittal No. Description 5 SC.8 18 Chloramine Residual Analyzer THESE ARE BEING TRANSMITTED: Information for Record O&M Data X Information for Engineer's Approval X Return 2 Copies C ERTI FICATION: This information has been reviewed and determined to be in compliance with the contract documents including plans and specifications as modified by addenda, change orders and field orders. Any exceptions tOthe contract documents are noted below. EXCEPTIONS / REMARKS: Signed Joe Swinnea ~'~IWALLACE & TIERNAN~' · Accurately measures free and total Chlorine, Chlorine Dioxide or Potassium Permanganate residuals at ranges from 0- 0.1 to 0- 50mg/L · Suitable for all applications such as wastewater, potable water and cooling water (fresh or seawater source) · Unmatched sensitivity down to 1 PPB (0.001 mg/L) utilizing 3 electrode measurement technology · Highest reliability available using a bare electrode cell with low maintenance and minimal chance of fouling · Long term stability of calibration that is unaffected by varying water quality, changes in turbidity or conductivity · Continuous amperometric measurement allows fast speed of response for control applications · Field proven in thousands of installations ...now with a simplified design and improved operation The Wallace & Tiernan Micro/2000 Residual Analyzer is the industry's most versatile, accurate and reliable on-line instrument for continuous measurement of oxidant residuals. High accuracy and the ability to measure low level residuals down to 1 PPB bring a new level of efficiency to the disinfection process regardless of the application. From potable water and wastewater treatment to cooling water, swimming pools and industrial processes, the Micro/2000 Analyzer helps you Control your entire treatment process from pre-treatment using Potassium Permanganate or Chlodne to distribution residual monitoring of Chloramines or free Chlorine. Three Electrode Measuring Cell Utilizing universally accepted and time-proven amperometric measurement technology, the Micro/2000 Analyzer uses an innovative 3electrode measuring cell to provide direct measurement of residuals with a sensitivity of +1 PPB (0,001 rag/L). Unlike some indirect measurement technologies such as ORP, amperometric measurement provides you with an accurate output and stable operation regardless of changing water conditions. With its bare electrode design, the Micro/2000 Analyzer is not susceptible to the fouling typical in membrane type analyze's, caused by bacteria, grease or turbidity. Also, unlike membrane probe analyzers, it measures all species of Chlodne residuals including Dichloramine. The 3 electrode cell eliminates the need for the constant zero adjustment typical of other analyzers, Reliability and stability are vastly improved while maintenance is drastically reduced.The calibration and accuracy of the analyzer is not affected by changes in turbidity or conductivity, which can be a problem with some other analyzers on the market. Unique Sample Flow System The sample is delivered to the Micro/2000 at a rate of 1-2 GPM for potable water applications (3~5 GPM for wastewater applications via a suitable sample pump). A flushing Y-strainer in the sample line filters the sample and divides it into two streams. The larger excess sample stream is used to continuously flush the strainer screen. The smaller stream is throttled and flows to the analyzer. Inside the Micro/2000 Analyzer, a valveless peristaltic pump is utilized to ensure a consistent sample reaches the analyzing cell for timely measurement in parallel with the actual process lag time. This pump eliminates the need for back-flushing and flow control orifices that could become fouled. The same pump also delivers liquid reagents, where required, for pH buffering and total residual measurement, in a fixed proportion to the sample. As an alternative, CO2 gas is available for pH buffering. The small volume of the sample flow, together with inexpensive reagents, dramatically reduces operating costs without sacrificing performance or reliability. A motor driven impeller in the analyzing cell maintains stable fluid velocity and provides constant grit bombardment for cleaning electrode surfaces, further reducing maintenance requirements. CO~ REAGENT SYSTEM ~~RC~u (IF LIQUID BUFFER IS NOT USED) CO tATOR & CO2 , CYLINDER OR BUFFER RESERVOIR 1 GALLON t POTASSIUM IODIDE RESERVOIR I GALLON (TOTAL RESIDUAL) Automatic Sample Line Dosing The Micro/2000 Analyzer is particularly well suited to wastewater L applications. One of the inherent problems in this service is biological growth in the sample line, from the sample pump to the analyzer, due to very low Chlorine residuals. ' ' As an option, the analyzer can be supplied with a small dosing pump for metedng a suitable biocide (typically Sodium Hypochlorite) to clean the sample line. The pump is activated by the analyzer software to automatically dose the sample line periodically. During dosing, the analyzer's 4-20mA output is frozen to prevent upsets to the control or monitoring operations. Analyzer reliability is enhanced and maintenance is reduced. 3 ELECTRODE CELL '~ Flow Diagram WATER SAMPLE VALVES FLUSHING Y-STRAINER ~ I DPu~.IN CHAMBER SHUT OFF TO WASTE SAMPLE LJNE COSING {IF USED) SAMPLE PUMP (FOR WASTBNATER APPUCAT1ONS) ! ~"~WAIIACE & TIERNAN PUBLICATION TI 50.505UA INTRODUCTION The Wallace & Tiernan Micro/2000 Residual Analyzer is an accurate and reliable on-line instrument for continuous measurement of free or total Chlorine residuals as well as Chlorine Dioxide or Potassium Permanganate residuals. As such, it brings a new dimension to the monitoring and control of chlorination systems treating potable water, wastewater, and cooling water, and water for swimming pools, heat exchangers, and cooling towers. Because it can provide continuous feedback of residual below the 100 ppb level, it provides operators with a powerful tool to help comply with EPA monitoring requirements. Control below 100 ppb also brings greater efficiency to the chlorination of municipal wastewater and process water in the electronics, drug and cosmetics industries and in brewing and softdrink bottling. The analyzer's reliability and ease of use make it ideal for monitoring disinfection and bleaching in pulp, paper and textile mills and for chilling, cooling, fluming and other recirculated water in canneries and frozen food plants. See SB 50.505 UA for detailed features and benefits. TECHNICAL DATA Type of Measurement Amperometric, Continuously measures and indicates free or total Chlorine residual, Chlorine Dioxide or Potassium Permanganate residuals in potable water, primary or secondan/treated wastewater or cooling water. Accuracy 0.001 mg/L or 1% of full scale, whichever is greater. For any residual measurement, analyzer accuracy is highly dependent on the accuracy of the standardizing (calibrating) analytical procedures used (standard methods procedures). The Chlodne Dioxide procedures, in particular, can be subject to inherently large errors which will thus impact on the above accuracy statement. Sensitivity 0.001 mg/L or 1% of full scale, whichever is greater. Repeatability 0.001 mg/L or 1% of full scale, whichever is greater. Stability Under favorable conditions ± 1% of full-scale for I month. Residual Measurement Ranges 0-0.10, 0-0.20, 0-0.50, 0-1.0, 0-2.0, 0-5.0, 0-10.0, 0-20.0 and 0-50.0 mg/L free or total Chlorine residuals, Chlorine Dioxide, or Potassium Permanganate residual. Continuous Operating Range 100:1 for each measurement range. Speed of Response 90 sec. with 2 rpm pump motor. 180 sec. with 1 rpm pump motor. (Sample is pumped to cell via an internal peristaltic pump). Output Signal Isolated 4-20 mA DC anDlog output proportional to residual. Max. impedence 600 ohms. Sample Requirements Approx. 8 to 10 liters/min. Recommended fluid velocity is 5 ft/sec. Max pressure 60 psi, throttled to less than 5psi at the Y-strainer before the analyzer inlet. (Measuring cell sample requirements 0.5 liters/rain). In long sample lines, greater flow will prevent a lag in readings. An optional remote sample pump is available. Liquid reagents In free Chlorine residual applications where pH varies, a pH 4 buffer solution is added to the sample. For total residual Chlorine, Potassium Iodide solution is also fed. In most wastewater applications, a detergent is added to the Potassium Iodide solution. Pump inlet tubing, with strainers, is placed into the reagent bottles. A one-gallon bottle of any reagent lasts from 3-10 weeks. For Potassium Permanganate or Chlorine Dioxide residuals in the presence of free Chlorine, Ammonium Surfate solution is added similar to the above. Gas Reagent Instead of liquid pH conditioning, for free Chlorine residual measurement in potable or cooling water, an optional Carbon Dioxide system is available. This includes a pressure regulator, tubing, purge meter, regulating valve and diffuser, Salinity Fresh to seawater Piping Connections Modular arrangement has 3/4" female NPT sample line, 1¼" female NPT drain connection; wall mounted arrangement has 1/2" female NPT sample line, 3/8" and 1¼" drain hose connections. ' WALIACE & TIERNAN" Wallace & Tiernan Inc. 25 Main Street, Belleville, N.J. 07109 - 3057. Tel: (201) 759 - 8000. Fax: (201) 759 - 8775, Temperature Ambient, 35° F to 125° F. Sample, 26° F to 125° F. Enclosure Electronics enclosure designed for NEMA 4X, watertight and corrosion resistant service. External Alarms Three electromechanical relays, user configurable thru the keypad for HIGH, LOW, SYSTEM WARNING, SYSTEM FAILURE alan'ns or any combination of these alarms. Relay contacts are N.O. or N.C. and are supplied unpowered. Contacts rated 5 amps at 250 VAC or 5 amps at 30 VDC. Connections are made at a convenient terminal strip. Electrical Requirements Anaiyzer and recorders require 120 volt + 10% or 240 volt + 10%, 50/60 Hz, single phase. Power Consumption AnaJyzer, 2 amps at120 V, 1 ampat240V; recorders, 15VAeach. Access Code Dual 3-digit codes for the operator and supervisor can be entered via the keypad if desired. This prevents unauthorized access to the operating parameters. Keypad and Display Control panel contains a 4 digit, sunlight readable LCD numedc display and a 16 character alphanumeric display.There are five display menus: main, setup, input/output, diagnostics and test. These are accessed through the keypad. Mounting Analyzer unit, with or without circular chart or strip chart recorder mounted in modular, structural foam ABS cabinet or supplied separately for wall or control panel mounting. Accessories Furnished Y-strainer and manual throttling valve for sample waterline. Potassium Iodide for total residual measurement, tube of grit, pH test papers, instruction book. Modular arrangement has pre-piped waredine. In addition, for potable or cooling water, 4 gallons of pH 4 buffer; for wastewater, 4 gallons of pH 4 buffer and 6 oz. of detergent. For Chlorine Dioxide or Potassium Permanganate measurement, a 2 month supply of Ammonium Sulphate to screen out free Chlorine interference. Optional Accessories Recorders (supplied with 400-24hour or 100-7 day circular charts or 24 Z-fold strip charts and one year's supply of fiber tip pens). Metedng pump for sample line dosing system, Wallace & Tiernan Amperometdc Titrator for calibration, sample pump (if sample pressure is less than 5 psi), spare reference junction, door lock for analyzer enclosure, Carbon Dioxide gas reagent system, Wallace & Tiernan Two-Cylinder Scale for readout of remaining Carbon Dioxide gas reagent supply. See catalog no. CN 150.500 UA and CN 150.501 UA for detailed dimensions. Shipping Weight In cabinet, 2001b; Wall-mounted anal~er only, 751b RECORDERS Circular ChaH Recorder This microprocessor based, se~o operated recorder is designed for accuracy and dependabili~. It has a synchronous cha~ d~ve motor with speeds sel~table for 24hour or 7 da~ operation. ~e cha~ drive assembly is construct~ to give correct alignment when cha~s are replaced. Digital electronics conve~ residual input signals into praise m~hanical poseions. ~ AC se~o motor ddves the pen arm directly for accurate input signal tracking and reliable pen motion. Accuracy is ~ 0.5% of span; span step response time is only 9-10 seconds. The recorder case, for wall or panel mounting, is rugged plastic with a gasketed door. Widng is connected at a convenient terminal stdp. The fiber tip pens are disposable type. Strip Chart Recorder This solid state, servo operated recorder is designed for flexible measurement of process variables, especially in water and wastewater treatment. It receives a 4-20 mA residual signal from the Micro/2000 Analyzer. Residual is recorded on 4 inch z-fold charts and is also read out on an indicating scale and pointer. A linear motor helps assure accuracy and fast response: one second for 10% to 90% step change input. The chart is driven by a synchronous motor with speed fixed at 20 mm per hour. Full scale ranges from 0.1 to 50 mg/L match the analyzer ranges. This reliable, accurate recorder featares all metal construction and a disposable fiber tip pen. It is compact for panel mounting: only 5,7 inches square and 7.3 inches deep. 1.0. GENERAL The analyzer (s) shall amperometrically monitor a continuous flow of treated (potable) (waste) (cooling) (process) water to determine (free Chlorine) (total Chlorine) (Potassium Permanganate) (Chlorine Dioxide) residual level. (The residual shall be used to control the (gas feeders) (metering pumps).The microprocessor based analyzer shall display the residual in field-selectable ranges as follows: It will automatically bias the measuring electrode to maintain a fixed potential to screen out interferences from contaminants even at very low PUBLICATION TI 50.505UA ,4 ~.:~' ~ 0 - 0.1, 0.2, 0.5, 1.0, 2.0, 5.0, 10.0, 20.0 and 50.0 mg/L. The measuring cell shall provide continuous on-line measurement of residual levels down to one part per billion (0.001 mg/L). The analyzer shall have the capability of on- site conversion to either free or total residual Chlorine analysis by plant personnel. Each unit shall be a Wallace & Tiernan Micro/2000 Residual Analyzer. 2,0. DESIGN (The analyzer shall be housed in a structural foam molded Noryl enclosure designed for wall or control panel mounting). - or- (The analyzer shall be housed in a modular or freestanding structural foam molded ABS cabinet in a style consistent with the chlorination modules. All module wiring shall be within liquid-tight flexible conduit. and the junction box and terminal strip shall comply with current National Electric Code (NEC) requirements. The cabinet and all contained equipment shall be factory assembled, requiring only connection of sample water supply, drain, and (115) (230) VAC power. (A (circular) (strip) chart recorder shall be mounted in the cabinet with each analyzer).The analyzer enclosure shall be divided into two compartments; the "wet side" contain_ing the flow through measuring cell assembly and the "electronics side" containing the microprocessor and controls which is rated at NEMA 4X. An isolated 4-20 mA DC output signal proportional to (Chlorine) (Chlorine Dioxide) (Potassium Permanganate) residual shall be available for transmitting to the control system and/or to a remote indicator or recorder). 3,0. COMPONENTS The analyzer shall include all of the following features: 3. 1. Three Electrode Cell A three electrode amperometric cell consisting of a bare Platinum disc working electrode, a second bare Platinum disc counter electrode, and a Silver/Silver Chloride reference electrode shall be provided to give stability and sensitivity down to one part per billion, regardless of changes in sample characteristics. A bias circuit shall compare the potential of the measuring electrode to that of the Silver/Silver Chloride reference electrode. residual readings. The need for any zero adjustment shall be eliminated. Automatic temperature compensation shall be included as standard. The analyzer shall not lose sensitivity due to extended pedods of samples containing no Chlorine, An analyzer utilizing protective membranes shall not be acceptable. 3.2. Sample Flow System A continuous sample shall be delivered to the analyzer. A flushing type Y-strainer and throttling valve shall be provided in the sample line. The Y-strainer shall divide the sample into two streams. The larger stream shall continuously flush the strainer element and the smaller stream shall flow to the analyzer. A small portion of this flow shall be regulated and delivered to the analyzing cell using a peristaltic pump, The pump head shall be capable of metering the sample as well as two reagents. Pump speed shall be fixed at (1 rpm for monitoring only applications) (2 rpm for monitoring and control applications). The reagents shall be combined with the sample before entering the cell flow block. In the cell block, the three electrode cell shall be immersed in the sample and a rotating impeller shall maintain a constant velocity across the electrode surfaces. The impeller shall also agitate the grit used to clean deposits from the electrodes, improving the stability of calibration. The three electrode cell shall produce an electrical current signal proportional to the oxidant concentration in the sample. 3.3. Reagent System (The analyzer will be able to measure free Chlorine without the use of reagents under stable sample pH conditions in the range of 4 to 7.5). (For free Chlodne measurements where the sample pH is not constant or above 7.5, a buffering system shall be supplied to stabilize the pH of the sample prior to entering the measuring cell. (Carbon Dioxide gas buffering of the sample shall be provided and include a pressure regulator, tubing, purgemeter with control valve, and a diffuser mounted in the analyzer enclosure). (Liquid pH 4 buffering of the sample shall be provided through the analyzer's peristaltic pump mounted in the analyzer enclosure)). PUBLICATION T150.505UA '] (For total Chlorine measurement, buffer and Potassium Iodide solution shall be added via the analyzer's peristaltic pump). (For (Chlorine Dioxide) (Potassium Permanganate) residual measurement, Ammonium Sulphate shall be added to the sample to remove interfering free Chlorine via the analyzer's peristaltic pump). 3.4. Analyzer Electronics The analyzer shall be controlled by microprocessor based electronics. User interface shall include a touch keypad and backlit sunlight readable LCD alphanumeric display. This display shall be scrollable to five operating menus as follows: -Main/default menu shall display the residual in mcJ/L. -Set up menu shall be used for configuring the analyzer for the particular application. -Input/output options menu for relay configuration. -Diagnostics menu shall be used for calibration and troubleshooting. -Test menu for checking operation of electronic components. The electronics shall incorporate non-volatile memory for maintaining calibration and set up parameters in case of power loss. Alarm conditions shall be identified through the alphanumeric display. To prevent unauthorized access to operating parameters, dual operator and supervisor access codes shall be provided in the software. A digital input shall be provided to accept a remote contact closure (from a flow switch in the sample line) (to place the analyzer in standby/sleep mode) (for alarm acknowledgement). An isolated 4-20mA output signal shall be provided proportional to the residual. Three user configurable alarm relays shall be provided for low residual, high residual, digital input or alarm conditions. Relay contacts shall be rated 5 amps at 250V. (In wastewater applications where Chlorine residuals are low, the analyzer shall be capable of controlling a dosing system to prevent biological growth in the sample line). (A dosing pump shall be provided for feeding a suitable blocida at the sample pump and through the sample piping). Automatic periodic dosing of the sample line shall be selectable through the analyzer's software. During the dosing operation, the analyzer's peristaltic pump shall be turned off to divert the sample to waste and the analyzer's output signal shall be frozen. 4.0. ACCESSORIES Tube of grit for electrode cell cleaning. (Four gallons of pH 4 buffer for Chlodne measurement). (One pound of granular Potassium Iodide for total residual Chlorine measurement). (Four gallons of Ammonium Sulfate for Chlorine Dioxide or Potassium Permanganate measurement in the presence of free Chlorine). (Microprocessor based, servo-operated circular chart recorder with (400-24 hour ) (100-7 day) circular charts and one year's supply of fiber tip pens. (Recorder to be mounted in modular cabinet with analyzer)). (Servo operated, strip chart recorder with 24 Z-fold strip charts and one year's supply of fiber tip pens). (Recorder to be mounted in modular cabinet with analyzer)). Wallace & Tiernan worldwide Australia France Wallace & Tiernan Pacific Pry. Limited Wallace & Tieman S.A.R.L PO Box 373 6/8 Rue Lalande Artatmon NSW 2064 AUSTRALIA F-75014 Paris, FRANCE Street address: 89-93 Reserve Road Teh (33) 1 - 43 22 28 00 Artarmon NSW 2064 AUSTRALIA Fax: (33) 1 - 43 22 53 30 Tel: (61) 2-436~375 Telex: 203 837F {61) 2-439-7543 Fax: (61) 2-438-4881 Germany Wallace & Tieman GmbH Brazil Posffach 1563 Wallace & Tieman Do Brasil S.A. D-89305 Gnnzburg, GERMANY Rua Dr. Jorge Balduzzi, 03 Cables: WALTIERNAN Gfinzburg (Gen'nany) CEP. 06807-480 - Embu - Sao Pauto - BRASIL Send via RCA (Esquina Rod, Regis Bittencourt Km 21,5 Street address: Auf tier Weide 10 actual 275,5) D-89312 Gnnzburg, GERMANY Tel: (55) 11 494-2399 Tel: (49) 8221-9040 Fax: (55) 11 494-5290 Fax: (49} 8221-904203 Telex: 531155 WALT ID Canada Wallace & Tieman Canada Inc, Mexico 925 Warden Avenue Wallace & Tieman De Mexico, SA de CV Scarborough. Ontado M1 L 4C5 via Jose Lopez Portillo No. 321 CANADA Cot. Santa Made Cuautepec Tel: (416) 751-7561 Tultitlen, Edo. De Mexico Fax: (416) 751-9682 54900 MEXICO Tel: (52) 5 875-51-27 Fax: (52) 5 875-55-66 875-21-71 Publication TI 50.505UA ~> Capyright Wallace & Tieman Inc. 1994 Due to continual product development and improvement, certain specifications may Change without pdor announcement. United Kingdom Wallace & Timan Limited Priory Works Tonbridge Kent TN11 0QL, ENGLAND Tel: (44) 1732-771777 Fax: (44) 1732-771800 Cables: WALTiERNAN - TONBRIDGE Telex: 851-95278 USA Wallace & Tieman Inc. PO Box 178 Newark NJ 07101-9978, 25 Main Street, Bellevilla, NJ 071 Q9-3057 Tel: (201) 759-8000 Fax: (201) 759-8775 IIWALLACE & TIERNAN Wallace & Tieman Inc. 25 Main Street, Belleville, N.J. 07109 - 3057. Tel: (201) 759 - 8000. Fax: (201) 759 - 8775. 15' Z'1-3/4' ¢_.. MOUNTI,,IG HOLES L ;: "'T 4-3/8' __J I0-15116' 13-3/4 * LIIB' --,l',.,,.,.=,,,,,-,-. [~,,/zooo ...,*~-.o] 1 5116' DIA. HOLES FOR TU6ING HOLES COz OR LIQUIO REAGENT TUBING I/4' FPT S MPLE - ' 10 HOSE WALL 8RACKET I/Z' FPT ELECTRICAL CONNECTIOR DRAIN CONNECTION CMOUNTED AGAINST CONNECTION SUPPORT R16) FRONT VIEW SIDE VIEW 5/~6' DIA. HOLE (2) ,~ 4-1/4' ~1 F71~' 6-1/167 · 5-31t' . WALL MOUNTING BRACKET FOR REAGENT BOTTLE DETAIL OF OPERATOR CONTROL PANEL ~'~IWALLACE & TIERNAN Wallace & T'~rnan, Inc. 25 Main Street, Betleville, NJ 07109-3057 Tel: (201) 759-8(X)0 Fax: (201) 759-8775 CN150.500UA Revised 1/95 [] CIRCULAR CHART RE CORDr. R ~ MICROIZOOO ANALYZ[R INL[T FITTINGS /SUPPLIED BY WiT I-V4' DRAIN TUelNG {3FT. SUPPLIED BY W&T) ANALYZER DRAIN WALL MOUNTED ARRANGEMENT [] SOLUTION TANK FOR DOSING AGENT 3/4' FPT [] PRE SSL,M:~ GAUC~ ~ · I, A~ WATER NT~ MODULE ARRANGEMENT NOTE:   ACCESS~Y ITEM F~D ~Y f ~ALLY LISTED N ~TAT~ A~ AS ~D ~ THS ~A~. ANALYZ[R DRAIN R~AGENT BOTTLES MAY BE MOUNTED ON EITI.{R .SIDE OR CHF~CTLY BELOW ANALYZER. DO NOT INSTALL ABOVE UNIT ' [WALLACE & TIERNAN Wallace & Truman, Inc. 25 Main Street, Belleville, NJ 07109-3057 Tel:, (201) 759-8000 Fax: (201) 759-8775 1 T CN150.509UA Revised 1/95 14" I ~ o SID~ VIEW FRONT VIEW "F - I/8" I 1Z-3/4" I MOUNTING DIMENSIONS CIRCULAR CHART RECORDER PANEL CUTOUT · ...'.'..'..'.~T - / FRONT VIEW ,OU~T,~,,~L SIDE VIEW STRIP CHART RECORDER ~WALLACE & TIERNAN ® Wallace & Ternan, Inc. 25 Iviain Street, Bellevtlle0 NJ 07109-3057 Tel: (201) 759-8(X)0 Fax: (201) 759-8775 CN150.515UA Revised 1/95