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16

O&M Manual
Rev-K (11/18)

Part 3 – Sensor/Flowcell Mounting

3.1

General

Select a location within the maximum sensor cable length for mounting of the sensor flow cell.

3.2

Constant-Head Flowcell

Chlorine  sensors  are  best  used  in  a  constant-head  overflow  chamber  because  variations  in
sample  flow  rate  and  pressure  can  cause  unstable  readings.    When  monitoring  low
concentrations (below 0.5 PPM), this method should always be used.

Mechanical  installation  of  the  flow  cell  requires  that  it  be  mounted  to  a  wall  or  other  convenient
flat  surface.    Alternatively,  the  mounting  holes  on  the  plate  will  accommodate  a  2"  U-bolt  for
mounting the plate to a 2" pipe.
Figure

9

shows the dimensions and mounting hole locations for the flow cell. Be sure to allow

enough clearance on the left side of the flow cell for insertion and removal of the sensor. About
12 inches clearance is recommended.

Figure 9 - Constant Head Flowcell Details

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Содержание Q46H/62

Страница 1: ...nology Inc ATI UK Limited 6 Iron Bridge Drive Unit 1 2 Gatehead Business Park Collegeville PA 19426 Delph New Road Delph Phone 800 959 0299 Saddleworth OL3 5DE 610 917 0991 Phone 44 0 1457 873 318 Fax...

Страница 2: ...TWARE NAVIGATION 36 6 22 MEASURE MENU MEASURE 38 6 23 CALIBRATION MENU CAL 39 6 24 CONFIGURATION MENU CONFIG 40 6 25 CONTROL MENU CONTROL 45 6 26 DIAGNOSTICS MENU DIAG 49 PART 7 CALIBRATION 52 7 1 CHL...

Страница 3: ...SEMBLY 19 FIGURE 13 LINE POWER CONNECTION 22 FIGURE 14 OPTIONAL RELAY BOARD WIRING 23 FIGURE 15 OPTIONAL RELAY BOARD WIRING 24 FIGURE 16 OPTIONAL ANALOG OUTPUT WIRING 24 FIGURE 17 SENSOR CABLE PREPARA...

Страница 4: ...ed chlorine monitor is a polarographic membrane sensor which measures chlorine directly Water simply flows past the sensor and directly to drain with the flow rate and pressure across the sensor contr...

Страница 5: ...07 0096 pH sensor For connection of the sensor to the electronics a 25 foot cable is supplied An additional 100 feet of interconnect cable may be added using 07 0100 junction box All required spare p...

Страница 6: ...Figure 2 below shows the same standard flowcell assembly and chlorine sensor along with the conventional type pH sensor A special adapter is required to hold the pH sensor in its proper location in t...

Страница 7: ...nd the use of our 03 0372 flow control assembly when using sealed flowcells This assembly consists of an in line filter and a fixed flow regulator which will maintain a constant 400 cc min flow rate t...

Страница 8: ...control problems Digital communication options for Profibus DP Modbus RTU More versions pending See Q46 Digital Communications Manual for Specifications Optional pH sensor feature enables active pH me...

Страница 9: ...to 200 0 ppm Display 0 75 19 1 mm high 4 digit main display with sign 12 digit secondary display 0 3 7 6 mm 5x7 dot matrix Integral LED back light for visibility in the dark Keypad 4 key membrane typ...

Страница 10: ...124 mm x 4 9 124 mm x 5 5 139 mm Mounting Options Wall or pipe mount bracket standard Bracket suitable for either 1 5 or 2 I D U Bolts for pipe mounting Panel mount adapter optional Conduit Openings...

Страница 11: ...d range Non linearity 0 1 of selected range Warm up Time 3 seconds to rated performance electronics only Supply Voltage Effects 0 05 span Instrument Response Time 60 seconds to 90 of step input at low...

Страница 12: ...ocess To take full advantage of the high contrast display mount the instrument in a location where the display can be viewed from various angles and long distances Locate the instrument in close proxi...

Страница 13: ...s then attached to the wall Figure 6 using the four outer mounting holes in the bracket These holes are slotted to accommodate two sizes of u bolt that may be used to pipe mount the unit Figure 7 Slot...

Страница 14: ...ATI Q46H 63 Combined Chlorine System Part 2 Analyzer Mounting 14 O M Manual Rev K 11 18 Figure 6 Wall Mounting Diagram Figure 7 Pipe Mounting Diagram...

Страница 15: ...the rear of the enclosure 4 screws for attachment of this bracket and a sealing gasket to insure that the panel mounted monitor provides a water tight seal when mounted to a panel The sealing gasket m...

Страница 16: ...low concentrations below 0 5 PPM this method should always be used Mechanical installation of the flow cell requires that it be mounted to a wall or other convenient flat surface Alternatively the mo...

Страница 17: ...well controlled can use a simpler sealed flowcell Using this flowcell requires that flow be controlled externally to about 400 cc min Variable flow rate or variable pressure will cause unstable readi...

Страница 18: ...ATI Q45H 63 Chlorine Manual Part 3 Sensor Flowcell Mounting 18 O M Manual Rev K 11 18 Figure 11 Sealed pH Flowcell Details...

Страница 19: ...ns for a submersible chlorine sensor should first be discussed with ATI A trial of such installations may be necessary Submersible sensors are mounted to a 1 pipe using a standard 1 PVC thread by thre...

Страница 20: ...oise from coupling with the instrumentation signals 3 This analyzer must be installed by specifically trained personnel in accordance with relevant local codes and instructions contained in this opera...

Страница 21: ...ction of both outputs to the same device such as a PLC or DCS A ribbon cable connects the power supply assembly with the microprocessor assembly located in the front section of the enclosure This cabl...

Страница 22: ...Part 4 Electrical Installation 22 O M Manual Rev K 11 18 Figure 13 Line Power Connection The power strip TB7 allows up to 12 AWG wire A wire gauge of 16 AWG is recommended to allow for an easy pass th...

Страница 23: ...the contacts For applications that require the same switched operating voltage as the Q46 115 or 230 V power may be jumpered from the power input terminals at TB7 Relay wiring is connected at TB4 TB5...

Страница 24: ...to connect to the optional 3 relay card Figure 15 OR the optional third analog output Out 3 Figure 16 The Q46 can be configured for only one of these optional features and the hardware for either opti...

Страница 25: ...removed easily from the flowcell Cord grips used for sealing the cable should be snugly tightened after electrical connections have been made to prevent moisture incursion When stripping cables leave...

Страница 26: ...frequency drives motors or other noisy electrical signal lines Do not run sensor or signal cables in conduit that contains AC power lines or motor leads Note If sensor is experiencing Low Slope or Low...

Страница 27: ...monitor max 100 feet require the use of a junction box The junction box is shown in and is supplied with two cable glands on the bottom of the enclosure Note If sensor is experiencing Low Slope or Lo...

Страница 28: ...ignal of 0 3 1 5 VDC A standard pH sensor without preamp 63 0101 is also available but the maximum cable length for this sensor is 25 ft 7 5 m When this sensor is used with the constant head flowcell...

Страница 29: ...ned Chlorine System Part 4 Electrical Installation 29 O M Manual Rev K 11 18 QUANTUM Figure 20 Junction Box Wiring w Optional pH Sensor Note The BLUE wire is NOT used when connecting a Flow Style Prob...

Страница 30: ...rocedure should be done by a qualified technician and it should only be done when the system is ready for operation Until then it is best to leave the sensor in the condition in which it is received F...

Страница 31: ...talled with the proper side facing the sample Examine the membrane carefully to identify the shiny side The membrane has a dull side and a shiny side The shiny side must face out or be in contact with...

Страница 32: ...with the Q46H system one battery powered and one without an internal preamp The pH sensors may be used to provide for continuous monitoring of both combined chlorine and pH Both sensors are shipped wi...

Страница 33: ...d from this user interface no internal jumpers pots etc MENU ICONS UNITS 12 CHARACTER SECONDARY DISPLAY MEMBRANE KEYPAD MENU ESC ENTER A B DIAG FAIL HOLD CAL CONF MENU ICONS UNITS 12 CHARACTER SECONDA...

Страница 34: ...12 Display The large custom display provides clear information for general measurement use and user configuration There are three main areas of the display the main parameter display the secondary mes...

Страница 35: ...In this case the output is locked to the last input value measured when the HOLD function was entered HOLD values are retained even if the unit power is cycled FAIL The FAIL icon indicates that the s...

Страница 36: ...en completed pressing ENTER again stores the variable and stops the flashing Pressing ESC aborts the change and also exits user entry mode The starting default screen is always the Measure Menu The UP...

Страница 37: ...elay C Mode 5 Relay E Mode 5 Relay D Mode 5 Relay F Mode 7 Com Mode 7 Com Address 4 Set 4mA 3 4 Set 20mA 3 6 Setpnt A or A HI A LO 6 Hyst A or A HI A LO 6 Delay A or A HI A LO Phase A Setpnt B Hyst B...

Страница 38: ...mA PID Status screen if enabled Shows the present controller output level on left and actual analyzer current on the right The controller can be placed in manual while viewing this screen by pressing...

Страница 39: ...solution or to set the sensor zero point See Part 7 Calibration for more details Cal pH The pH calibration function allows the user to if enabled adjust the analyzer offset and span to match the samp...

Страница 40: ...dify value range is 0 1 to 9 9 minutes Press ENTER to store the new value Contrast This function sets the contrast level for the display The custom display is designed with a wide temperature range Su...

Страница 41: ...for temperature default chlorine or pH Press ENTER to initiate user entry mode and the entire value will flash Use the UP arrow key to modify the desired value selections include 1 C F for temperatur...

Страница 42: ...ay B then operates identically to Relay A with settings for setpoint hysteresis delay and phasing appearing in the CONFIG menu automatically See Figure 25 for details Temp Units This function sets the...

Страница 43: ...automatically identify which buffer is being used and compensate for the value based on the built in tables The order in which the buffers are used during calibration is unimportant since the system a...

Страница 44: ...4 24 95 7 01 95 9 77 4 00 pH 7 00 pH 9 18 pH C pH C pH C pH 0 4 00 0 7 10 0 9 46 10 3 99 10 7 06 10 9 33 20 4 00 20 7 02 20 9 23 30 4 01 30 6 99 30 9 14 40 4 03 40 6 97 40 9 07 50 4 05 50 6 98 50 9 01...

Страница 45: ...the range specified in Set Range and the 0 and the 100 point must be separated by at least 1 of this range Use the LEFT arrow key to select the first digit to be modified Then use the UP and LEFT arr...

Страница 46: ...may be set to track temperature default pH or chlorine The values stored for the 4 mA point may be higher or lower than the value stored for the 20 mA point The entry value is limited to a value betw...

Страница 47: ...between 0 and 999 seconds Press ENTER to initiate user entry mode and the value will flash Use arrow keys to modify value range is 0 to 999 seconds Press ENTER to store the new value A Phasing This fu...

Страница 48: ...entically to Relay A Relay B settings appear in the CONFIG menu list automatically If Relay C Mode is set to CON see Relay C Mode then Relay C will function identically to Relay A Relay C settings app...

Страница 49: ...the new value Note the Set Hold function holds BOTH current levels as well as ALL relay settings The Set Hold function can also hold at an output value specified by the user To customize the hold valu...

Страница 50: ...bleshooting Escaping this screen returns the unit to normal operation Press ENTER to initiate the user entry mode and the right most digit of the value will flash Use arrow keys to modify desired valu...

Страница 51: ...imit is exceeded but also when power is lost to the controller When failsafe is selected to be ON the normally open contacts of the relay will be closed during normal operation In an attempt to make t...

Страница 52: ...by plugging the cable plug into the receptacle on the top of the sensor 2 Place about an inch of water in a small beaker or other convenient container and immerse the tip of the sensor The water used...

Страница 53: ...into place If insertion becomes difficult use a small amount of silicon grease to lubricate the o rings If the low volume flow cell is used screw the sensor into the flow cell until the membrane cap...

Страница 54: ...may be calibrated on line or the sensor can be removed from the process and placed into a known solution temperature reference In any case it is critical that the sensor be allowed to reach temperatur...

Страница 55: ...e a problem with the temperature element In the event of calibration failure it is recommended to attempt the calibration again immediately 7 3 pH Calibration The pH calibration menus will not be seen...

Страница 56: ...he effect It is not possible to eliminate this effect however it usually is constant or very slow changing A full calibration of the pH sensor consists of an initial 2 point calibration in buffers Thi...

Страница 57: ...hly clean the pH sensor and place it into the pH calibration buffer stirring several times before letting it rest in the beaker Allow sensor to sit in solution long enough to achieve temperature equil...

Страница 58: ...to keep the process at the setpoint To affect this control the controller must be used with properly selected control elements valves proper chemicals etc that enable the controller to add or subtract...

Страница 59: ...of the controller Like proportional gain increasing integral gain results in the control action happening quicker Set the I term to a number between 3 5 to start 1 2 more than P Like proportional gai...

Страница 60: ...ss and hold the ENTER key for about 5 seconds You will see a small m show up between the value and the mA value This indicates you are now in manual mode Once in manual you may increase the PID output...

Страница 61: ...at the extreme ranges of the measuring scale In addition if a chemical process is not symmetrical that means it responds differentially to the addition and subtraction of chemical It is important in...

Страница 62: ...ifficult to clean effectively Immersing the tip of the sensor in 1N nitric acid solution will sometimes remove deposits that cause low sensitivity but this is not always the case The recommended pract...

Страница 63: ...the tip and the silver coil Do not allow the connector at the back of the sensor to be submerged Allow the electrodes to soak in distilled water for 30 minutes 4 Put a new membrane and fresh electrol...

Страница 64: ...ing with any acid regardless of concentration 9 6 Replacing the Saltbridge and Reference Buffer Solution 1 Hold the sensor with the process electrode pointing up Place a cloth or towel around the salt...

Страница 65: ...r without interfering with operations The flow cell may be cleaned by wiping or by washing with detergents or dilute acids Do not try to clean with solvents as the acrylic may craze or crack Change th...

Страница 66: ...leshooting it is many times helpful to disconnect all these outputs and place wire shorts across the terminals in the instrument to isolate the system and evaluate any problems which may be coming dow...

Страница 67: ...e in the water is combined chlorine and not free chlorine 10 3 Analyzer Tests 1 Disconnect power and completely disconnect all output wiring coming from the analyzer Remove sensor wiring relay wiring...

Страница 68: ...configured Check manual for limits of the function to be configured Locked Analyzer security setting is locked Enter security code to allow modifications to settings Unlocked Analyzer security has ju...

Страница 69: ...sor tests as described in section 10 5 Replace sensor if still failure TC Cal Fail Failure of temperature calibration FAIL icon will not extinguish until successful calibration has been performed or 3...

Страница 70: ...d an open circuit value of infinite resistance There must be no measurable resistance at all between these wires Any resistance at all indicates either water in the cable connector or the breakdown in...

Страница 71: ...ng replace the saltbridge and reference cell buffer pH 7 as outlined in Section 9 If the sensor still cannot be calibrated perform the following test A multimeter pH 7 buffer and pH 4 buffer will be n...

Страница 72: ...erence Solution for pH sensor 07 0096 05 0066 Salt bridge for pH sensor 07 0096 00 0043 Constant Head Flowcell assembly with mounting plate 42 0014 Flowcell o ring each 07 0100 Junction box 31 0038 In...

Страница 73: ...e alteration improper storage or extended exposure to excessive gas concentrations Should inspection indicate that sensors have failed due to any of the above the warranty shall not apply The Manufact...

Страница 74: ...DUCTS NH3 Ammonia CO Carbon Monoxide H2 Hydrogen NO Nitric Oxide O2 Oxygen CO Cl2 Phosgene Br2 Bromine Cl2 Chlorine ClO2 Chlorine Dioxide F2 Fluorine I2 Iodine HX Acid Gases C2H4O Ethylene Oxide C2H6O...

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