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Figure 23

Recommended Current Loop Hookup

Current Source

20 mA Source

Computer or

Printer Receiver

20 mA Source

Computer

Transmitter

Current Source

Computer or

Printer Receiver

Computer

Transmitter

Current Loop Configuration

With Analyzer Providing Current Sources*

*Note: The analyzer is not isolated from the current loop in this configuration.

Содержание EC1000

Страница 1: ...48275 18 EC1000 PROCESS pH ORP SYSTEM INSTRUCTION MANUAL Hach Company 1994 1997 All rights are reserved Printed in the U S A al dk 7 97 3ed...

Страница 2: ...2...

Страница 3: ...cords by Intertek Testing Services ETL certified compliance by Hach Company Required Standard s include EN 55011 CISPR 11 Emissions Class B Limits CANADIAN INTERFERENCE CAUSING EQUIPMENT REGULATION IE...

Страница 4: ...in which case the user will be required to correct the interference at his own expense Shielded cables must be used with this unit to ensure compliance with the Class A FCC limits Because this instrum...

Страница 5: ...round the Menu 25 2 1 2 Editing a Setup Value 25 2 1 3 Restoring Default Settings 27 2 2 Setup Menu 28 2 2 1 Alarms 28 2 2 2 Recorder Output 29 2 2 3 PID Output 30 2 2 4 Recorder 2 33 2 2 5 Initial Se...

Страница 6: ...Pump 59 5 5 Installing the pH ORP Electrode 60 5 5 1 In Line Electrode Installation 62 5 5 2 Submersible Sensor Installation 62 5 5 3 Flow Thru Cell Installation 62 5 6 Wiring the Meter 63 5 6 1 Wire...

Страница 7: ...trode Cleaning 87 8 1 10 Industrial pH Electrode Cleaning 87 8 2 Pump Maintenance 87 8 2 1 Changing Pump Tubing 87 8 3 Fuse Replacement 88 8 3 1 Meter Fuse Replacement 88 8 3 2 Pump Fuse Replacement 9...

Страница 8: ...8...

Страница 9: ...range Alarms Alarms 1 and 2 Usable in any of operating modes pH mV Temperature Programmable for either low or high set point alarm Alarm relays SPDT with contacts rated at 5A resistive load at 30 Vrm...

Страница 10: ...nar lower body Noryl polyphenylene oxide upper body Hach One ORP ELECTRODE SPECIFICATIONS mV Range 2000 to 2000 mV Temperature Range 0 to 60 C Pressure Range 0 to 35 psi 241 kPa Accuracy mV 10 mV Temp...

Страница 11: ...90 RH non condensing Reagent Usage Reference solution capacity for a minimum of 1 month of operation Power Requirements 115 230 Vac 17 50 60 Hz 9 VA 8 watts Enclosure NEMA 4X IP66 Wall mounting with...

Страница 12: ...12...

Страница 13: ...ally or imminently hazardous situation which if not avoided could result in death or serious injury CAUTION Indicates a potentially hazardous situation that may result in minor or moderate injury NOTE...

Страница 14: ...14...

Страница 15: ...an a do Material e familiarizese com os procedimentos de seguran a antes de manipular quaisquer subst ncias qu micas ATTENTION La manipulation des chantillons chimiques talons et r actifs peut tre dan...

Страница 16: ...16...

Страница 17: ...de two 4 20 mA outputs for recording and controlling pumps and optional RS 232C and 20 mA current loop serial port Alarm features include user programmable Alarm 1 and Alarm 2 setpoint selections for...

Страница 18: ...18 Figure 1 Controller Front Panel...

Страница 19: ...strument displaying pH mV this key is not valid if pressed an INVALID message flashes on the main display 8 HOLD DOWN ARROW key During normal operation instrument displaying pH mV this key functions a...

Страница 20: ...20 Figure 2 Pump Module...

Страница 21: ...the sodium error in pH units measure the apparent pH and sodium concentration of the test solution and determine the error from Figure 3 Locate the point on the appropriate pH horizontal grid line re...

Страница 22: ...m submersible flow thru cell and in line installations Mounting kits are available for the different applications Refer to SECTION 5 INSTALLATION for detailed installation information 1 7 1 Submersibl...

Страница 23: ...s a reference electrolyte pump that supplies fresh electrolyte to the reference half cell The pumped electrolyte maintains an open reference junction through a capillary outlet to produce a stable and...

Страница 24: ...24 Figure 6 pH Control Loop...

Страница 25: ...UP to enter the SETUP menu 2 Press ENTER to move into the ALARMS submenu 3 Press the DOWN ARROW key to scroll to the ALARM2 entry 4 Press ENTER to move into the ALARM2 submenu 5 Press the DOWN ARROW k...

Страница 26: ...ARROW key five times to change the 0 to 5 8 Press ENTER to save the new value The second type of setup data is discrete values such as the recorder mode where a pH mV or temperature recorder mode is s...

Страница 27: ...nu Table 2 Setup Menu Default Value Menu Options Submenu Default ALARM1 MODE PH HI SET PNT 16 00 PH HYST 0 10 PH DLY TIME 0 SEC ALARM2 same as ALARM1 RECORDER MODE PH WINDOW MINIMUM 2 00 PH MAXIMUM 16...

Страница 28: ...temperature high low Press ENTER to select the MODE menu PH HI is the default Scroll through the MODE menu by pressing the DOWN ARROW or UP ARROW key When the desired mode is displayed press ENTER to...

Страница 29: ...he zero and full scale mA output can be trimmed from the keyboard so the output can be calibrated to exactly 4 20 mA or adjusted to match the zero and full scale on the recorder being used To check or...

Страница 30: ...rder zero in terms of mA output Press the DOWN ARROW key or the UP ARROW key to adjust the output Press ENTER Press ENTER to display and output the current full scale recorder in terms of mA output Pr...

Страница 31: ...appears on the display Change the value by pressing the RIGHT ARROW key and the DOWN ARROW key or the UP ARROW key Press ENTER to save the RESET value and advance to Press ENTER The current value for...

Страница 32: ...sequence Press ENTER then CLEAR followed by the DOWN ARROW key to advance to The function of the output trim adjustment is slightly different from the rest of the edit functions When the zero minimum...

Страница 33: ...perature setpoint is used to calculate the pH reading The solution temperature compensation SOL TC submenu allows for the compensation of pH changes to the solution due to temperature The default sett...

Страница 34: ...value and advance to Press ENTER Press ENTER The current SOLution Temperature Compensation appears on the display Change the SOLution TC Range 0 100 pH to 0 100 pH by pressing the RIGHT ARROW key foll...

Страница 35: ...ENTER followed by the DOWN ARROW key or the UP ARROW key to toggle between CONTROL and RECORD2 modes Press ENTER Press ENTER This displays the pH SIGnal AVeraGe value 00 to 10 seconds 03 seconds is t...

Страница 36: ...s using the Industrial Electrode are required to reset the timer as described A reference electrolyte timer is provided which indicates when the reference electrolyte bottle needs to be filled Reset t...

Страница 37: ...pH calibration calibrate the temperature sensor and adjust the mV offset The calibration menu is entered by pressing the CAL key The first display to appear is STD 1 followed by STD 2 after STD 1 is...

Страница 38: ...e Reagenzien und Standardsubstanzen enthalten aufmerksam durchzulesen damit Sie sich mit den beim Umgang mit diesen Chemikalien notwendigen Vorsichtsma nahmen Risiken und Notfallschutzma nahmen vertra...

Страница 39: ...f one powder pillow in 50 mL of deionized water and mix 2 Remove the electrode from the sample solution and clean if needed see Section 8 1 Electrode Maintenance 3 Rinse the electrode with deionized w...

Страница 40: ...b reading by pressing the RIGHT ARROW key and the DOWN ARROW key or the UP ARROW key 6 Press ENTER to accept the calibration 7 Press pH mV to return the meter to normal operations The pH reading may b...

Страница 41: ...ation The uncalibrated accuracy of the temperature sensor is 1 5 C and temperature calibration is normally not required If greater accuracy is required use the following procedure for either a one poi...

Страница 42: ...solution of known redox potential Hach offers Light s Solution Cat No 26125 20 as an ORP standard in 20 mL glass ampules sealed under argon Or you may prepare your own solutions as described in Table...

Страница 43: ...ormed so that the display reads values which are more familiar to the operator For example if it is known that a process must be held at a set point versus SCE then the mV zero can be set at 430 mV wh...

Страница 44: ...key and the DOWN ARROW key or the UP ARROW key 7 Press ENTER The readout displays the current mV value 8 After the electrode stabilizes refer to the stability indicator note in Section 2 3 Calibratio...

Страница 45: ...f the setup menu Refer to Section 2 2 5 Initial Setup The factory default settings are 1200 baud no parity 8 bit word length 2 stop bits The serial I O operates without handshake therefore care must b...

Страница 46: ...puter program can test to determine if the line is a response message or if the line is a routine printout The steering character is an ASCII left bracket 5B Hex Note If the print interval is set to z...

Страница 47: ...CONTROLLER CMD pH mV Recall or set controller mode Value on recall OK on set CSP 2 to 16 for pH 2000 for mV Recall or set controller setpoint Value on recall OK on set CDB 0 to 2 for pH 0 to 100 for...

Страница 48: ...nt alarm mode Value on recall OK on set A2D 0 to 30 Recall or set alarm 2 delay time Value on recall OK on set ALO Toggles alarm lockout status and responses with the new status Locked or Unlocked RWN...

Страница 49: ...s in the CONTROL menu along with their affects on the control loop are described below 4 2 Instrument Settings 4 2 1 Set Point This is the value of pH mV that is desired 4 2 2 Dead Band This is the wi...

Страница 50: ...o high the loop goes into oscillation Because the proportional output is the error times the gain there must be an error term unless the required output is the same as the preset value Figure 8 PID Co...

Страница 51: ...sed to 100 which reduces the error to about In Figure 8c the gain is reduced back to 10 but the preset is set to 30 Having the preset set closer to the required output reduces steady state error to ab...

Страница 52: ...e For most applications either linear or linear is used Linear is selected when the control pump is set up so that an increasing controller output signal causes the pH to increase Linear is selected w...

Страница 53: ...10 11 12 13 14 30 40 50 60 70 80 90 100 REAGENT DEMAND pH Setpoint 1 2 3 4 5 The process gain seen by the controller is the slope of a line between the setpoint and the pH measurement on the titration...

Страница 54: ...54...

Страница 55: ...ing labels and require special attention Read and follow all warning instructions carefully to avoid personal injury and damage to the instrument Only qualified personnel should conduct maintenance pr...

Страница 56: ...56...

Страница 57: ...r electrode storage If salt crystals are present remove them by placing the sensing end of the electrode under a current of warm tap water until the crystals dissolve Keep the quick disconnect fitting...

Страница 58: ...58 Figure 12 Controller Installation Panel Mount...

Страница 59: ...wall mounting kit Cat No 44247 00 The mounting blocks should be positioned as shown in Figure 14 on page 60 and fastened with the four screws provided Open the front cover of the pump module and inser...

Страница 60: ...a dip tube as a submersible unit in a tank or other vessel The electrode also can be placed in a flow thru cell for applications of flow with very little pressure see Figure 16 Maximum pressure is 35...

Страница 61: ...61 Figure 15 Installing the pH ORP Electrode Figure 16 Flow Thru Cell...

Страница 62: ...tlet 5 5 2 Submersible Sensor Installation Submersible sensors are typically installed on the end of a 1 ID pipe having a 1 NPT fitting see Figure 15 on page 61 Install the mounting collar into the 1...

Страница 63: ...nections the center conduit hole is for power connections and the right conduit hole is for electrode recorder controller and SIO connections The left and right conduit holes have molded in knockouts...

Страница 64: ...ls of insulation protection of low voltage wires from high voltage circuits Additionally the recommended cable for signal wires electrode recorder controller and SIO is 22 AWG twisted pair shielded ca...

Страница 65: ...tos de passagem de polegada s o fornecidos em separado para este prop sito Caso os cabos n o forem tra ados por eletrodutos met licos com liga o terra para garantir a conformidade com as normas de irr...

Страница 66: ...Rotate the indicator slot on the Volt Select Switch to the 230 V position see Figure 18 on page 64 2 Remove the 0 2A fuses and replace them with appropriate type 0 1A fuses refer to Section 8 3 Fuse R...

Страница 67: ...oute the electrode cable into the controller through the right conduit hole see Figure 17 on page 63 There are four color coded wires and a shield wire inside the electrode cable The color coded wires...

Страница 68: ...ous les branchements lectriques doivent tre effectu s par un technicien qualifi afin d assurer le respect de toutes les normes lectriques applicables Pour r pondre aux normes UL CSA et d autres normes...

Страница 69: ...onnection verify that the Voltage Select Switch is set for the proper AC line requirement This instrument is factory set and properly fused for 115 Vac line requirements To convert the instrument for...

Страница 70: ...70...

Страница 71: ...ion kit See Figure 26 on page 89 2 Loosen the four plate screws over the pump face and remove the plate 3 Install the pump tubing assembly in the pump with 3 way stopcock underneath the pump and reins...

Страница 72: ...he PURGE position Figure 21 Purge With the syringe still attached tighten the four pump head screws Be sure the tube through the pump runs straight across the fingers and is not pinched permanently cl...

Страница 73: ...73 6 4 Calibration See Section 2 3 Calibration Figure 21 Priming Tee Operation...

Страница 74: ...74...

Страница 75: ...o the meter 3 Remove the front panel of the meter by removing the four corner screws Disconnect the existing wires from the front panel by unplugging the connector s see Figure 18 on page 64 4 Attach...

Страница 76: ...6 9 5 9 CKT D Subminiature Female TB1 2 TXD TB1 3 RXD TB1 1 COM PIN 2 RXD PIN COM PIN 7 RTS to PIN 8 CTS PIN 6 DSR to PIN 4 DTR PINS 1 9 Not Used Connection Host Computer 9 CKT D Subminiature Female...

Страница 77: ...hardware or software at the host computer the jumpers are not required 7 3 Current Loop Configuration A current loop interface configuration is used to transmit data over longer distances via a twist...

Страница 78: ...bled through hardware or software then this jumper is not needed DSR to DTR Table 13 RS 232C Line Signal Definitions Signal Name Description TXD Transmitted Serial Data Output RXD Received Serial Data...

Страница 79: ...Computer or Printer Receiver 20 mA Source Computer Transmitter Current Source Current Source 7 6 1 5 4 Computer or Printer Receiver Computer Transmitter Current Loop Configuration With Analyzer Provid...

Страница 80: ...80...

Страница 81: ...er before disconnecting the electrode at the quick disconnect 1 Turn off power to the EC1000 Analyzer 2 Turn off power to the electrolyte pump 3 Disconnect the electrode cable and reference tubing fro...

Страница 82: ...L bottle of electrolyte lasts over one month The reservoir volume is 700 mL When replenishing electrolyte for an existing electrode clean and calibrate the electrode If you are replenishing electrolyt...

Страница 83: ...83 Figure 24 Sensor Replacement...

Страница 84: ...age 73 Purge With the syringe still attached tighten the four pump head screws Be sure the tube through the pump runs straight across the fingers and is not pinched closed Note If air bubbles are dete...

Страница 85: ...85 Figure 25 Hach One pH Process Electrode...

Страница 86: ...m manipulados incorrectamente ou fortuitamente mal utilizados Leia todas as advert ncias e informa o das Folhas de Dados de Seguran a de Material FDSM nas etiquetas do reagente ATTENTION L acide chlor...

Страница 87: ...e to soak for an hour in a neutral pH 7 00 buffer solution The plastic housing can be cleaned with almost any mild detergent 8 2 Pump Maintenance 8 2 1 Changing Pump Tubing Under ambient pressures and...

Страница 88: ...yps und mit gleichen Stromkennwerten verwendet werden 8 3 1 Meter Fuse Replacement Note UL CSA type fuses are required for use in North America and IEC type fuses are required for use in Europe One of...

Страница 89: ...89 Figure 26 Pump Module Plumbing Diagram...

Страница 90: ...circuit The terminal strip is located on the upper right hand side of the circuit board 6 Remove the two screws that attach the pump assembly to the inside of the enclosure 7 Remove the pump assembly...

Страница 91: ...try runs the display through a sequence of test patterns to determine if the displays are functioning correctly The test patterns are as follows 1 All LEDs on followed by 2 All LEDs off 3 A scrolling...

Страница 92: ...Figure 27 Jumper for D A Test Note A special jumper must be added for this test Figure 27 D A A D loop TEST This test does a bit weight D A A D loop test A good test displays OK followed by 512 2 A b...

Страница 93: ...ctrodes The four submenu entries are 4MA PH 20MA PH 4MA TEM and 20MA TEM The calibration is done as follows A 4 mA source is connected to the pH input Select the 4MA PH menu entry and press ENTER to a...

Страница 94: ...esolved E06 PROBE ER Temperature probe open The electrode wiring is disconnected or the electrode is defective Determine then resolve the problem with the electrode by referring to Section 9 2 Trouble...

Страница 95: ...essed during programming or calibration or the value entered is outside the acceptable range Review the procedure to determine the correct entry Redo calibration or programming LOCKED Keyboard lockout...

Страница 96: ...the controller with the Test Plug provided in the installation kit Turn off the power to the controller Remove the electrode plug connector from the controller and replace it with the Test Plug Turn o...

Страница 97: ...ence line is clogged evidenced by the inability to force electrolyte out of the electrode reference outlet during purging Determine if the clog is in the electrode or the Teflon reference tubing by di...

Страница 98: ...the entire electrode The mV readings are erratic Air in the reference line Verify that electrolyte is exiting the reference outlet Wipe the end of the electrode dry and observe the reference outlet tu...

Страница 99: ...e controller output to full scale 1 2 FS Drive controller output to 1 2 scale D A TEST NONE D A A D loop test jumper must be installed CAL DFT PH DFT Sets the pH probe calibration to default values MV...

Страница 100: ...00 to 16 00 PH mV 2000 0 to 2000 0 MV and temperature 5 00 to 100 C OUT TRIM rEC O TRIM rEC Trim recorder zero in terms of mA output FS TRIM rEC Trim recorder full scale in terms of mA output CONTROL...

Страница 101: ...N TMR RST rEF Reset the reference solution timer WARNINGS DISP WRN Display system warnings CLR WARN Clear system warnings Table 20 Calibration Menu Key Option Description CAL STD 1 CAL AUTO STD SD 1 p...

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Страница 107: ...At Hach Company customer service is an important part of every product we make With that in mind we have compiled the following information for your convenience 107 GENERAL INFORMATION...

Страница 108: ...108...

Страница 109: ...Tubing Kit 15 24 m 50 ft 46399 00 Power Cord 125V 7 ft with strain relief UL CSA for 115 Vac line 46306 00 Power Cord 230V 7 ft with strain relief with Continental European Plug IEC 46308 00 RS 232C...

Страница 110: ...in Relief Grip 1 16 for electrolyte tubing 43617 00 Syringe 10cc 22024 00 Tubing Polyurethane per ft for pump module 43623 00 Tubing Teflon 1 16 OD per ft electrolyte reservoir 44989 00 Tubing Polyeth...

Страница 111: ...ion PTF 203 1 16 O D 2 Pump Tubing Assembly with 3 way stopcock and connectors 1 Strain Relief Grip 1 Syringe 10 cc 1 Tubing Teflon 1 16 O D 20 ft 1 pH Electrolyte Pump Maintenance Kit 46406 00 Includ...

Страница 112: ...112...

Страница 113: ...ucts and their use and to take your orders Specialists in analytical methods they are happy to put their talents to work for you Call 1 800 227 4224 International Customers Hach maintains a network of...

Страница 114: ...4 800 665 7635 Canada only Telephone 204 632 5598 FAX 204 694 5134 In Latin America the Caribbean the Far East the Indian Subcontinent Africa except Mediterranean Africa or Pacific Basin Hach Company...

Страница 115: ...sor 48275 01 Each System includes Electrolyte 4 pkg Installation Kit Instruction Manual Maintenance Kit pH Electrode Flat or Round Bulb Pump Module OPTIONAL ACCESSORIES Description Cat No Teflon Tubin...

Страница 116: ...116...

Страница 117: ...e following table the instrument reading may deviate slightly at specific frequencies Any electronic instrument is sensitive to radio waves if the power is great enough However typical transmitting po...

Страница 118: ...2 8 79 21 3 22 10 450 9 12 8 86 21 3 22 20 470 9 3 8 47 22 26 10 490 9 12 8 45 21 3 29 20 510 9 12 8 75 21 3 30 70 550 9 12 9 12 21 3 27 00 647 9 12 8 95 21 3 23 30 Frequency MHz Display w o RF pH Dis...

Страница 119: ...op Configuration 77 Current Loop Customer Connection Box 78 Curve 52 Customer Service 57 D Data communication format selections 45 DATABIT 35 DEAD BanD 31 Dead Band 49 Default Settings 27 Dip Switch D...

Страница 120: ...rmat 45 PRINTER 48 Pump Fuse Replacement 90 Pump Installation 60 Pump Maintenance 87 Pump Module and Electrical Connections 69 Pump Motor Replacement 90 Pump Wiring 68 Purging the System 72 84 R Rate...

Страница 121: ...submenu 33 Temperature Compensation Setup 33 TITRation CURve 31 Two Point Calibration with Auto Recognition of Hach Buffers 39 W Wall Mounting 59 Warning Codes 37 Warnings 36 WINDOW menu 30 Wire Prep...

Страница 122: ...122...

Страница 123: ...123...

Страница 124: ......

Страница 125: ...imit in terms of pH 2 00 to 16 00 PH mV 2000 0 to 2000 0 MV and temperature 5 00 to 100 C MAXIMUM rEC Recorder upper limit in terms of pH 2 00 to 16 00 PH mV 2000 0 to 2000 0 MV and temperature 5 00 t...

Страница 126: ...H to 0 1 pH SERIAL Inl BAUD SEr Baud rate of serial I O 300 600 1200 2400 4800 9600 PARITY SEr Parity of serial I O odd even none DATA BIT SEr Number of data bits of serial I O 7 8 STOP BIT SEr Number...

Страница 127: ...auto recognition of buffer value MAN STD Sd 2 pH calibration point 2 with manual entry of buffer value GRAB SMP CAL pH calibration using a grab sample REVIEW CAL OFFSET CAL Display pH electrode offset...

Страница 128: ...ut to full scale 1 2 FS Drive controller output to 1 2 scale D A TEST NONE D A A D loop test jumper must be installed CAL DFT PH DFT Sets the pH probe calibration to default values MV DFT Sets the mV...

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