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ATI

Q46H/79PR Chlorine Manual

P

art 4 – Electrical Installation

20

O&M Manual
Rev-E (5/17)

4.2

Power Connection

Verify  the  AC  power  supply  requirement  before  installing.    Also  verify  that  power  is  fully
disconnected before attempting to wire.

AC powered Q46 systems are supplied with 5 cable gland fittings.

Connect HOT, NEUTRAL, and GROUND to the matching designations on terminal strip

TB7

.

The two analog outputs for the standard system are present at terminal TB1. The loop-load
limitation in this configuration is 500 Ohms maximum for each output. Also note that these two
outputs are completely isolated from each other to insure that ground loops do not result from the
connection 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  cable  can  be  removed  during  installation  to  facilitate
wiring if desired.  It is best to unplug only one end.  The ribbon cable has a marking stripe on one
edge  that  is  used  to  indicate  proper  orientation.    The  indicator  stripe  should  be  on  the  bottom
edge of the cable when installed.

WARNING

Disconnect  line  power  voltage  BEFORE  connecting  line  power
wires  to  Terminal  TB7  of  the  power  supply.    The  power  supply
accepts only standard three-wire single phase power.  AC power
supplies  are  configured  for  90-260  VAC  operation  at  the  factory
at  time  of  order,  and  the  power  supply  is  labeled  as  such.    Do
NOT  connect voltages  other  than  the  labeled  requirement  to  the
input.

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Summary of Contents for Q46H/79PR

Page 1: ...K 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 610 917 0992 Fax 44 0 1457 874 468 Email sales analyticaltechnology com Email sales atiuk com Web www Analyticaltechnology com ...

Page 2: ...Software Navigation 34 6 22 Measure Menu MEASURE 36 6 23 Calibration Menu CAL 37 6 24 Configuration Menu CONFIG 37 6 25 Control Menu CONTROL 42 6 26 Diagnostics Menu DIAG 46 PART 7 CALIBRATION 49 7 1 Chlorine Calibration 49 7 11 Chlorine Zero Cal 49 7 12 Chlorine Span Cal 50 7 2 Temperature Calibration 51 7 3 pH Calibration 52 7 31 Two Point pH Cal 53 7 32 One Point pH Cal 53 PART 8 PID CONTROLLER...

Page 3: ...OR MOUNTING 18 FIGURE 13 LINE POWER CONNECTION 21 FIGURE 14 OPTIONAL RELAY BOARD WIRING 22 FIGURE 15 OPTIONAL RELAY BOARD WIRING 23 FIGURE 16 OPTIONAL ANALOG OUTPUT WIRING 23 FIGURE 17 SENSOR CABLE PREPARATION 24 FIGURE 18 DIRECT SENSOR CONNECTION 25 FIGURE 19 JUNCTION BOX INTERCONNECT WIRING 26 FIGURE 20 FLOW STYLE SENSOR ASSEMBLY 28 FIGURE 21 SUBMERSIBLE STYLE SENSOR ASSEMBLY 29 FIGURE 22 USER I...

Page 4: ...VDC powered monitor both with three relays and two 4 20 mA analog outputs Both versions allow flexible output options which include additional 4 20 mA current outputs additional 0 30 VDC signal relays PID control and digital communication cards In addition to normal chlorine measurement the Q46H 79PR is also available with an optional pH input which provides a two parameter monitoring system Both ...

Page 5: ...oring System 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 the flowcell inlet chamber Figure 2 Chlorine System w Optional pH Bayonet Style Sensor ...

Page 6: ...d 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 flowrate through the system This flow will be maintained so long as inlet pressures are between 5 and 125 PSIG The in line filter is used mainly to protect the flow control element against larger particles that m...

Page 7: ...ication options for Profibus DP Modbus RTU More versions pending See Q46 Digital Communications Manual for Specifications Optional pH sensor feature enables active pH measurement with the Q46H 79PR monitor The pH reading can also be sent to one of the analog outputs for complete pH chlorine monitoring Two analog outputs on the relay version may be configured to track chlorine and temperature chlor...

Page 8: ...ED back light for visibility in the dark Keypad 4 key membrane type with tactile feedback polycarbonate with UV coating Weight DC transmitter configuration 1 lb 0 45 kg Line powered unit 1 5 lb 0 68 kg Ambient Temperature Analyzer Service 20 to 60 C 4 to 140 ºF Sensor Service 5 to 55 C 23 to 131 F Storage 5 to 70 C 22 to 158 ºF Ambient Humidity 0 to 95 indoor outdoor use non condensing to rated am...

Page 9: ...ount bracket standard Bracket suitable for either 1 5 or 2 I D U Bolts for pipe mounting Panel mount adapter optional Conduit Openings Five NPT openings Adapter can be removed to provide a 1 NPT opening in the bottom of the enclosure Gland seals provided but not installed Relays Electromechanical Three SPDT 6 amp 250 VAC 5 amp 24 VDC contacts Software selection for setpoint phase delay deadband hi...

Page 10: ... 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 lowest damping Equipment bearing this marking may not be discarded by traditional methods in the European community after August 12 2005 per EU Directive 2002 96 EC End users must return old equipment to ...

Page 11: ... used during the calibration process 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 proximity to the point of sensor installation this will allow easy access during calibration The sensor to instrument distance should not exceed 100 feet To maximize signal t...

Page 12: ...d to the wall 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 Slots will accommodate u bolts designed for 1 or 2 pipe The actual center to center dimensions for the u bolts are shown in the drawing Note that these slots are for u bolts with 20 threads The 1 pipe u bolt 2 I D clearance is available...

Page 13: ...ATI Q46H 79PR Chlorine Manual Part 2 Analyzer Mounting 13 O M Manual Rev E 5 17 Figure 6 Wall Mounting Diagram Figure 7 Pipe Mounting Diagram ...

Page 14: ...r 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 must first be attached to the enclosure The gasket contains an adhesive on one side so that it remains in place on the enclosure Remove the protective paper from the adhesive side of the gasket and slide the ...

Page 15: ...rnatively the mounting holes on the plate will accommodate a 2 U bolt for mounting the plate to a 2 pipe Figure 9 Constant Head Flowcell Details 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...

Page 16: ...using pressure regulators and needle valves Variable flow rate or variable pressure will cause unstable readings in this flowcell ATI offers a special flow control element that can be used ahead of this flowcell on the incoming sample line The flow control assy is part no 03 0372 It will control the inlet flowrate at 400 cc min with inlet pressure variations from 5 150 PSIG A 50 micron y strainer ...

Page 17: ...s not vary appreciably Chlorine sensors can never be used in completely stagnant conditions A flow velocity of at least 0 3 feet per second is normally required for measurement Any applications 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 thread pipe c...

Page 18: ...7 SENSOR CABLE 2 HANDRAIL 1 ALUMINUM CONDUIT THREADED 1 T x T PVC COUPLING ONE END OR 1 SCHED 80 PVC PIPE LENGTH AS REQUIRED SUPPLIED BY CUSTOMER SWIVEL MOUNTING BRACKET WITH HARDWARE SUPPLIED BY ATI SUPPLIED BY ATI SENSOR TYPICAL 2 3 FT SUBMERGENCE Figure 12 Submersible Sensor Mounting ...

Page 19: ...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 operating manual Observe the analyzer s technical specifications and input ratings Proper electrical disconnection means must be provided prior to the electrical power connected to this instrument such as a circuit breaker r...

Page 20: ...he connection 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 cable can be removed during installation to facilitate wiring if desired It is best to unplug only one end The ribbon cable has a marking stripe on one edge that is used to indicate proper orienta...

Page 21: ...rt 4 Electrical Installation 21 O M Manual Rev E 5 17 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 through into the NPT ports when wiring ...

Page 22: ...tacts 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 and TB6 as shown below Note that the relay contact markings are shown in the NORMAL mode Programming a relay for Failsafe operation reverses the NO and NC positions in this diagram See Figure 14 below Figure...

Page 23: ...ect to the optional 3 relay card See Figure 15 OR the optional third analog output Out 3 See Figure 16 The Q46 can be configured for only one of these optional features and the hardware for either option must be factory installed Figure 15 Optional Relay Board Wiring Figure 16 Optional Analog Output Wiring ...

Page 24: ...moved 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 adequate length for connections in the analyzer enclosure as shown below The standard 25 ft sensor cable normally supplied with the system is already stripped and ready for wiring This cable can be cut ...

Page 25: ...ble to provide a break point for long sensor cable runs Route signal cable away from AC power lines adjustable 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 Output conditions due to poor Earth Ground Connections move the Shield connection from P...

Page 26: ...nitor 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 Low Output conditions due to poor Earth Ground Connections move the Shield connection from P S board to alternate location on lid where indicated with an S Figure 19 Junction Box Interconnect Wiring ...

Page 27: ...nal preamp 07 0096 provides an amplified signal 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 an adapter is supplied to allow the sensor to sit in the inlet chamber The pH input can also be done using the analog output of another pH analyzer When using...

Page 28: ...er after removing the vent screw Preparation of the sensor for operation must be done carefully The procedure 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 Figure 20 Flow Style Sensor Assembly Submersible chlorine sensors are made up of two separate parts ...

Page 29: ...rane assembly from the bottom of the chamber O rings are contained in grooves on both the bottom and top of the chamber Be sure that these o rings remain in place 3 Upon removal of the front nut membrane assembly one of the membranes may adhere to the chamber o ring This should be removed and discarded 4 From a package of 2 extra membrane assemblies supplied with the sensor carefully remove from b...

Page 30: ...permanent damage to the sensor 5 2 Optional pH Sensor An optional battery powered pH sensor is available for use with the Q46H 79PR system that puts out a nominal signal of 0 3 1 5 VDC proportional to pH over a range of 0 14 pH units The Q25P pH sensor can also be used and provides a standard 4 20 mA signal The sensor is shipped with a protective rubber boot containing a small amount of salt solut...

Page 31: ...nfiguration 6 1 User Interface The user interface for the Q46 Series instrument consists of a custom display and a membrane keypad All functions are accessed from this user interface no internal jumpers pots etc Figure 22 User Interface ...

Page 32: ...nge and to store any change 6 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 message line and the icon area Main Parameter During normal operation the main parameter display indicates the present process input with sign and units This main display ma...

Page 33: ...e 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 system diagnostic function has detected a problem that requires immediate attention This icon is automatically cleared once the problem has been resolved Relay Area A B The relay area contains two icons that indicate ...

Page 34: ...ompleted 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 arrow key is used to select the desired display From anywhere in this section the user can press the MENU key to select one of the four Menu Sections The UP arrow icon next to all list items on the displ...

Page 35: ...Mode 4 I out 3 Mode Relay 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 Delay B Phase B Setpnt C Hyst C Delay C Phase C 5 Setpnt D 5 Hyst D 5 Delay D 5 Phase D 5 Setpnt E 5 Hyst E 5 Delay E 5 Phase E 5 Setpnt F 5 Hyst F 5 Delay F 5 Phase F 4 Fail Out ...

Page 36: ...can be placed in manual while viewing this screen by pressing and holding the ENTER key for 5 seconds until a small flashing m appears on the screen At that point the controller output can be adjusted up or down using the UP and LEFT arrow keys To return to automatic operation press and hold the ENTER key for 5 seconds and the M will disappear 1 4 00 mA Analyzer output current 1 2 12 00 mA Analyze...

Page 37: ...nd junction boxes may degrade the accuracy of the temperature measurement in some extreme situations Therefore this feature is provided as an adjustment Set Range This function allows the user to set the display range of the analyzer to a specific application Once set all output functions use this display range to establish configuration settings Press ENTER to initiate user entry mode and the val...

Page 38: ... new value Main Units This function allows the user to select either PPM or mg l for the chlorine measurement Zero Filter This function forces the reading to zero when the reading is below the entered value For example if the entered value were 0 0020 the display at 0 0019 would then indicate 0 0000 This feature is useful in blanking zero noise Main Display This function allows the user to change ...

Page 39: ...N setting enables normal control operation for Relay A with settings for setpoint hysteresis delay and phasing appearing in the CONFIG menu automatically See Figure 25 for further details The FAIL setting enables the fail alarm mode for Relay A Relay A will then trip on any condition that causes the FAIL icon to be displayed on the LCD Using this mode allows the User to send alarm indications to o...

Page 40: ...ser entry mode and the entire value will flash Use the UP arrow key to modify the desired display value The choices are OFF and ON Press ENTER to store the new value pH Type Allows the user to select either 1 Comb or 2 Q22P The 1 Comb selection configures the monitor for a standard pH electrode without using its temperature compensation but in turn uses the temperature compensator from the chlorin...

Page 41: ... 4 16 80 6 99 80 8 89 90 4 21 90 7 01 90 8 85 95 4 24 95 7 01 95 8 83 4 00 pH 7 00 pH 10 00 pH ºC pH C pH C pH 0 4 00 0 7 10 0 10 27 10 3 99 10 7 06 10 10 15 20 4 00 20 7 02 20 10 05 30 4 01 30 6 99 30 9 95 40 4 03 40 6 97 40 9 87 50 4 05 50 6 98 50 9 80 60 4 08 60 6 98 60 9 75 70 4 12 70 6 97 70 9 73 80 4 16 80 6 99 80 9 73 90 4 21 90 7 01 90 9 75 95 4 24 95 7 01 95 9 77 4 65 pH 6 79 pH 9 23 pH º...

Page 42: ...he desired numerical value Press ENTER to store the new value PID Setpnt Iout1 PID The value which the controller is attempting to maintain by adjusting output value It is the nature of the PID controller that it never actually gets to the exact value and stops The controller is continually making smaller and smaller adjustments as the measured value gets near the setpoint PID Prop Iout1 PID Propo...

Page 43: ...t is set for temperature within the range specified in Set Range if the output is set to track chlorine and must be within 0 14 pH if set to track pH The 4 mA and the 20 mA point must be at least 20 units away from each other Press ENTER to initiate user entry mode and the value will flash Use arrow keys to modify value Press ENTER to store the new value NOTE If the temperature units are changed b...

Page 44: ...Use arrow keys to modify value range is 0 to 999 seconds Press ENTER to store the new value A Phasing This function establishes the direction of the relay trip When phase is HI the relay operates in a direct mode Therefore the relay energizes and the LCD indicator illuminates when the chlorine value exceeds the setpoint When the phase is LO the relay energizes and the LCD indicator illuminates whe...

Page 45: ... Relay C Mode is set to CON see Relay C Mode then Relay C will function identically to Relay A Relay C settings appear in the CONFIG menu list automatically If Relay D E or F Mode is set to CON see Relay D E F Modes then the Relay will function identically to Relay A Relay settings appear in the CONFIG menu list automatically Setpnt A HI Hyst A HI Delay A HI Setpnt A LO Hyst A LO Delay A LO B Setp...

Page 46: ...Menu and scroll to Sim Output using the UP arrow key Press ENTER Follow the instructions under Sim Output see following page CAUTION There is no time out on the hold feature Once placed into hold mode return to normal operation must be done manually Fault List The Fault List screen is a read only screen that allows the user to display the cause of the highest priority failure The screen indicates ...

Page 47: ...be under control of the SIM screen until the ESC key is pressed The instrument will automatically terminate the simulated output after 30 minutes and return to normal operation unless the HOLD function is engaged Note If the HOLD function is engaged before the Sim Output function is engaged the simulated output will remain the same even when the ESC key is pressed Disengage the HOLD function to re...

Page 48: ...r 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 this configuration less confusing the LCD icon logic is reversed with this setting and the icon is OFF under this normal condition Therefore when the trip condition occurs the closed N O contacts will be opened relay de energized and the LCD icon will illuminate...

Page 49: ...merse the tip of the sensor The water used need not be distilled but it must not contain residual chlorine For submersible sensors submerge the entire sensor in a bucket of unchlorinated water Allow the sensor to sit undisturbed for at least 8 hours 3 Scroll to the CAL menu section using the MENU key and press ENTER or the UP arrow key Cal Chlor will then be displayed 4 Press the ENTER key The scr...

Page 50: ...se 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 bottoms out on the acrylic flow cell Do not over tighten 2 Turn on the inlet water flow to the flow cell and adjust the inlet flow rate so that water is overflowing from the inlet chamber The best performance will be obtained when some water is...

Page 51: ...uilibrium with the solution in order to provide the highest accuracy When moving the sensor between widely different temperature conditions it may be necessary to allow the sensor to stabilize as much as one hour before the calibration sequence is initiated If the sensor is on line the user may want to set the output HOLD feature prior to calibration to lock out any output fluctuations 1 Scroll to...

Page 52: ...olution to be in electrical continuity with the process solution One problem is caused by the reference junction and the diffusion rate of the electrolyte through the junction material The inside surface of the junction material is in contact with the reference cell solution which has a very high ionic strength The outside surface of the junction material is in contact with the process water which...

Page 53: ...r Once value has been adjusted press the ENTER key 7 The message Accepted will be displayed or an error describing the cause the failure If the cal point was accepted rinse the sensor in distilled or de ionized water and move it into the second pH buffer Stir it slightly several times and let the sensor rest in the beaker 8 Scroll to the next menu item by pressing the UP arrow key once The menu it...

Page 54: ... pressing the UP arrow key once The menu item Cal pH buf1 will be displayed 5 Press the ENTER key The display will begin to flash Using the UP and LEFT arrow keys adjust the displayed number to the known value of the pH buffer If the sensor is till mounted in the process enter the known reference value The exact temperature compensated number for pH buffers is typically written on the side of the ...

Page 55: ... properly selected control elements valves proper chemicals etc that enable the controller to add or subtract chemical rapidly enough This is not only specific to pumps and valves but also to line sizes delays in the system etc This section is included to give a brief description of tuning details for the PID controller and is not intended to be an exhaustive analysis of the complexities of PID lo...

Page 56: ...n happening quicker Set the I term to a number between 3 5 to start 1 2 more than P Like proportional gain increasing the integral term will cause the controller action to be quicker D Derivative gain The addition of derivative control can be problematic in many applications because it greatly contributes to oscillatory behavior In inherently slow chemical control processes differential control is...

Page 57: ...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 by pressing the UP arrow or you may decrease the output by pressing the LEFT arrow This will allow you to drive the PID output to any desired setting To revert to normal PID control press and hold th...

Page 58: ...al 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 these applications to study steady state impact as well as step change impact to process changes In other words once the process has apparently been tuned under normal operating conditions the user ...

Page 59: ... 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 practice is to simply replace the membrane when it becomes fouled To replace a total chlorine membrane assembly follow the Sensor Assembly procedure see Section 5 1 Chlorine Sensor Preparation Do not reuse the ele...

Page 60: ...ck of the sensor to be submerged Allow the electrodes to soak in distilled water for 30 minutes 4 Put a new membrane and fresh electrolyte in the electrolyte chamber and reassemble the sensor Connect to the chlorine monitor electronics and allow the sensor to stabilize for at least 24 hours The sensor can be placed in the flow cell with chlorinated water running through it during stabilization How...

Page 61: ...Saltbridge and Reference Buffer Solution 1 Hold the sensor with the process electrode pointing up Place a cloth or towel around the saltbridge Turn the saltbridge counterclockwise by hand to loosen and remove the saltbridge Do NOT use pliers 2 Pour out the old reference buffer by inverting the sensor process electrode pointing down If the reference buffer does not run out gently shake or tap the s...

Page 62: ...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 the o ring in the flow cell yearly or if any damage is observed If insertion of the sensor into the flow cell becomes difficult use silicon grease to lubricate the o rings that hold the sensor in place Us...

Page 63: ...eshooting 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 down the analog output connections 4 Do not run sensor cables or analog output wiring in the same conduits as power wiring If low voltage signal cables must come near power wiring cross them at 90 to mini...

Page 64: ...n the water is total 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 and analog output wiring Re apply power to the analyzer 2 Using the Simulate feature check operation of analog outputs and relays with a DMM 3 Check cell drive circuit Place a wire short between WHITE and B...

Page 65: ...ed Transmitter security setting is locked Enter security code to allow modifications to settings Unlocked Transmitter security has just been unlocked Displayed just after security code has been entered Offset High The sensor zero offset point is out of the acceptable range of 20 to 20 nA Check wiring connections to sensor Allow sensor to operate powered a minimum of 12 hours prior to first zero ca...

Page 66: ...perature calibration FAIL icon will not extinguish until successful calibration has been performed or 30 minutes passes with no keys being pressed Clean sensor check cal solution temperature and repeat sensor temp calibration TC calibration function only allows adjustments of 6 ºC If still failure perform sensor tests as described in section 10 5 Replace sensor if still failure EPROM Fail Internal...

Page 67: ...in the cable connector or the breakdown in an electrode seal D Connect a DVM between the blue and brown or orange wires Reading resistance you should find 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 an electrode seal E Connect a DVM between the ...

Page 68: ...eaning 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 needed 1 With transmitter power on and sensor connected place the multimeter s positive lead on the white position of the transmitter terminal strip and the negative lead on the black position The ...

Page 69: ...tal Chlorine sensor Flow Type 02 0232 Sensing element body Flow Type 00 1671 Total Chlorine sensor submersion type with 25 cable 02 0231 Submersion sensing element with 25 cable 45 0007 Electrolyte chamber 05 0109 Membrane cap assembly 05 0004 Spare Parts Kit screw o ring 09 0068 TCl2 PR electrolyte 4 oz 120 cc 07 0096 Q22P pH Sensor with connector 63 0101 25 Combination pH Sensor w Solution Groun...

Page 70: ...ed Cl2 Flowcell Assy 00 1527 Sealed pH Flowcell Assy 05 0101 Sealed Cl2 Flowcell Vacuum Breaker Note Instrument is supplied with sufficient spare parts for 6 12 months of operation For 2 year spare parts inventory 3 each of the items marked with an asterisk are required Lock Unlock Code 1461 ...

Page 71: ...se 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 Manufacturer assumes no liability for consequential damages of any kind and the buyer by acceptance of this equipment will assume all liability for the consequences of its use or misuse by the Customer his e...

Page 72: ...ODUCTS 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 Alcohol O3 Ozone CH4 Methane Combustible Gas H2O2 Hydrogen Peroxide HCl Hydrogen Chloride HCN Hydrogen Cyanide HF Hydrogen Fluoride H2S Hydrogen Sulfide NO2 Nitrogen Dioxide NOx Oxides of Nitrogen S...

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