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Hach EC1000 Instruction manual

Manual is about: PROCESS pH/ORP SYSTEM

Summary of EC1000

  • Page 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.

  • Page 2

    2.

  • Page 3: Certification

    3 certification hach company certifies this instrument was tested thoroughly, inspected, and found to meet its published specifications when it was shipped from the factory. The ec1000 process ph/orp system has been tested and is certified as indicated to the following instrumentation standards: pro...

  • Page 4: Certification,

    4 changes or modifications to this unit not expressly approved by the party responsible for compliance could void the user’s authority to operate the equipment. This equipment has been tested and found to comply with the limits for a class a digital device, pursuant to part 15 of the fcc rules. Thes...

  • Page 5: Table of Contents

    5 table of contents certification .......................................................................................................................................................... 3 specifications .................................................................................................

  • Page 6: Table Of Contents,

    6 section 3 serial interface .......................................................................................................................45 3.1 optional serial interface board ....................................................................................................................

  • Page 7: Table Of Contents,

    7 section 8 electrode and pump maintenance ............................................................................... 81 8.1 electrode maintenance ........................................................................................................................................... 81 8.1.1...

  • Page 8

    8.

  • Page 9: Specifications

    9 specifications (specifications subject to change without notice.) controller specifications ranges: ph: -2 to 16 ph; mv: -2000 to +2000 mv; temperature: -5 to +105 °c accuracy*: ph: ±0.02 ph; mv: ±1.0% of reading, ±35 mv non-calibrated; temperature: ±1.5 °c before calibration with electrode, ±0.4 ...

  • Page 10: Specifications,

    10 hach one ® process ph specifications ph range: 0 to 14 ph accuracy*: ph: ±0.02 ph; temperature: ±1.5 °c before calibration, ±0.4 °c after calibration repeatability: ph: ±0.02 ph (calibrated at 25 °c and measured at 25 °c); temperature: ±0.2 °c temperature range: 0 to 60 °c pressure range: 0 to 35...

  • Page 11: Specifications,

    11 industrial process ph electrode specifications ph range: 0 to 12 ph reproducibility: ±2% of reading temperature and pressure range: 0 to 80 °c at 0 to 100 psig; 0 to 100 °c at ambient pressure slope: (ph 4 to ph 7) @ 25 °c: >170 mv reference element: ag/agcl electrode diameter: 28.2 mm (1.11") at...

  • Page 12

    12.

  • Page 13: Safety Precautions

    13 safety precautions before attempting to unpack, set up, or operate this instrument, please read this entire manual. Pay particular attention to all warnings, cautions and notes. Failure to do so could result in serious injury to the operator or damage to the equipment. To ensure the protection pr...

  • Page 14

    14.

  • Page 15: Operation

    Warning handling chemical samples, standards, and reagents can be dangerous. Review the necessary material safety data sheets and become familiar with all safety procedures before handling any chemicals. Advertencia la manipulación de muestras químicas, patrones y reactivos puede ser peligrosa. Ante...

  • Page 16

    16.

  • Page 17

    17 section 1 general information 1.1 instrument description the ec1000 process ph/orp monitoring system consists of the series ec1000 controller, a hach one pump module, and a hach one process ph or orp electrode assembly. The system monitors a sample stream for its ph value within the range of 0 to...

  • Page 18

    18 figure 1 controller front panel.

  • Page 19

    19 table 1 controller front panel item name function 1 led display main display field. Consists of eight 14-segment alpha-numeric 0.54 ″ high red led characters. During normal operation, this field displays either the ph or mv value (depending on the mode of operation selected). This field also disp...

  • Page 20

    20 figure 2 pump module.

  • Page 21

    21 1.4 hach one process ph electrode the hach one ph electrode features a continuous, free-flowing reference junction to assure a constant long-lasting reference potential. The electrode contains a replaceable ph glass sensor (in bulb or flat configuration) a reference half cell, a temperature senso...

  • Page 22

    22 figure 4 electrodes 1.6 industrial process ph electrode the hach industrial ph electrode’s unique design does not use an electrolyte pump and does not have a replaceable sensor. The low-maintenance electrode has self-pressurized electrolyte and a flat electrode. The electrode features high temper...

  • Page 23

    23 1.8 principle of operation the ec1000 process ph/orp system consists of a combination ph or orp electrode, a controller, and a reference electrolyte pump (see figure 5 on page 23). The electrode consists of a ph or orp measuring half cell and a double junction reference half cell, which establish...

  • Page 24

    24 figure 6 ph control loop.

  • Page 25: Section 2 Operation

    25 section 2 operation 2.1 operating the user-programmable setup the ec1000 controller is a menu-operated instrument. In the setup menu, each of the instrument settings are grouped into submenus of common settings. For user programming, move to the desired setting, and edit the current value. Refer ...

  • Page 26

    26 example—changing alarm2, set point from 16.00 ph to 7.50 ph: 1. First move to the alarm2 set point entry as described in section 2.1.1 moving around the menu. Press enter . 2. Press the right arrow key to move the flashing digit to the right. 3. Press the down arrow key to change the 1 to 0. 4. P...

  • Page 27

    27 2.1.3 restoring default settings to clear all previous settings (not necessary on first time start-up), press clear and enter simultaneously and the display test appears: 1. Press the down arrow key to scroll down through the display test menu to cold start. 2. Press enter . This procedure return...

  • Page 28

    28 2.2 setup menu 2.2.1 alarms two independent programmable setpoint alarms are provided. Each alarm can be set to operate on ph, mv, or temperature setpoints, and may be programmable to be either a high alarm or a low alarm. When the programmed setpoints are exceeded, the alarm led turns on. The al...

  • Page 29

    29 press enter . The delay time is locked in, and the display returns to: press clear . The display backs out to: press the down arrow key. The alarm2 submenu is identical to alarm1 submenu: mode; set point; hysteresis; and delay time are all selected identical to alarm1. Press clear and then clear ...

  • Page 30

    30 press enter to save the new value. Press clear . This backs out to the window menu of the recorder submenu. Next, press 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 scale) trim is sel...

  • Page 31

    31 press enter . The current value for set point 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 set point value and advance to: press enter . The current value for dead band appears on the display. Change t...

  • Page 32

    32 repeat percentages or values. When all entries are made, return to the controller mode options and select curve. Example—(assuming ph was selected for the controller mode) press enter . Select the percent (of reagent addition) for the first point (x axis) by pressing the right arrow key and the d...

  • Page 33

    33 press enter . This is the trim controller full scale setting (in terms of ma). Press the down arrow key or the up arrow key to adjust the output. Press clear three times. This backs out to the top level of the menu, or you may press the ph/mv key to exit the menu. 2.2.4 recorder 2 the second isol...

  • Page 34

    34 press enter . Press enter to choose the temperature compensation mode (automatic [auto tc] or manual [man tc]). Automatic temperature compensation is the default. If manual temperature compensation is chosen, press the down arrow key or the up arrow key to toggle to: press enter . Press enter . T...

  • Page 35

    35 press enter . The databit menu is 7 or 8. Select the value by pressing the down arrow key or the up arrow key. Press enter . The stopbit menu is 1 or 2. Select the value by pressing the down arrow key or the up arrow key. Press enter . Press enter followed by the down arrow key or the up arrow ke...

  • Page 36

    36 to set the keyboard lockout status, press setup to call up the setup menu: press the up arrow key three times to scroll to: to call up the keyboard lockout code entry, press enter . Using the up arrow and down arrow keys, enter the lockout code. To key in the keyboard lockout code entry, press en...

  • Page 37

    37 section 9 troubleshooting for additional information on the system warnings. To display or clear the warnings, press setup to call up the setup menu: press the up arrow key to scroll to: press enter . Press enter . The system displays the warning codes shown in table 3. Additional details about t...

  • Page 38

    38 warning to familiarize yourself with handling precautions, dangers and emergency procedures, always review the material safety data sheets prior to handling containers, reservoirs, and delivery systems that contain chemical reagents and standards. Protective eye wear always is recommended when co...

  • Page 39

    39 invalid calibration indication during a calibration, if the offset is greater than ±300 mv, or if the slope is outside the range of 44.2 to 89.5 mv, an invalid message is displayed and the calibration is not accepted. 2.3.1.1 two-point calibration with auto recognition of hach buffers the buffers...

  • Page 40

    40 2.3.1.2 one-point grab sample calibration note: when solution temperature compensation is operational (non-zero, see section 2.2.5 initial setup) the current ph value saved and displayed in step 3 is the actual ph of the process solution at the process temperature. For best accuracy, the lab samp...

  • Page 41

    41 4. Edit the value on the display by pressing the right arrow key and the down arrow key or the up arrow key so the display matches the buffer value. 5. Press enter . The readout displays the current ph value. 2.3.1.4 one point calibration with a buffer to calibrate the instrument with one buffer ...

  • Page 42

    42 note: the temperature difference between the two samples must be at least 10 °c. 10. Move the electrode to a sample at a different known temperature. 11. Press enter . The readout is an edit display with a temperature value such as 60.0 °c. (the value displayed is the last value used.) 12. Edit t...

  • Page 43

    43 6. Keeping the orp shorting lead in contact with the platinum disc, wait for a stable reading and then press the enter key twice. 7. Press the ph/mv key to return the meter to normal operations. Remove the orp shorting lead. 2.3.3.2 orp electrode check to ensure the orp electrode is functioning c...

  • Page 44

    44 6. Edit the value on the display to match the mv potential of the sample by pressing the right arrow 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 ...

  • Page 45: Section 3 Serial Interface

    45 section 3 serial interface 3.1 optional serial interface board a serial interface board (cat. No. 46326-00) is available as a user-installed option for the ph/orp meter. The board enables the analyzer to be connected to a printer or a computer to provide a permanent record of ph/mv levels and the...

  • Page 46

    46 figure 7 analyzer printout 3.4 remote input commands commands sent to the analyzer from a computer must be formatted as an ascii character string in uppercase or lowercase letters. Spaces are allowed, but not required. All commands start with a three character string. If additional information is...

  • Page 47

    47 table 6 rs-232 remote commands code function response general setup cst do a cold start prints setup scd set calibration defaults ok sav recall or set signal average value (on recall); or ok (on set) rcv recall current measurement values prints current values klo toggles keyboard lockout status a...

  • Page 48

    48 alarms (continued) a2s ± 2000 for mv, -5.0 to 105.0 for temp)> recall or set alarm 2 setpoint for current alarm type value (on recall); ok (on set) a2h 1 to 100 for mv, 0.1 to 2 for temp)> recall or set alarm hysteresis for current alarm mode value (on recall); ok (on set) a2d recall or set alarm...

  • Page 49: Section 4 Pid Control

    49 section 4 pid control 4.1 ph controller basics a simple ph control loop is shown in figure 6 on page 24. This same configuration and procedure can be applied to orp applications. There are endless variations to this basic loop, but the main elements of the loop are shown. The loop operates as fol...

  • Page 50

    50 if the gain is set too 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 controller output response.

  • Page 51

    51 example— refer to figure 9. In the three examples, it is assumed that the signal to the pump requires about 35% to bring the ph value to the set point. In figure 8a, the preset is at 0%, and the gain is at 10. For these conditions, the steady state error is about . In figure 8b, the gain is incre...

  • Page 52

    52 4.3.1 reset (integral) please see figure 8 for a diagram of the controller output response (integral only) to a step change on the input. The integral action is used to drive the loop so that there is zero long term error. For example, on a proportional controller where the steady state ph is too...

  • Page 53

    53 figure 10 pid ph process gain figure 11 pid titration curve 10 20 1 2 3 4 5 6 7 8 9 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 curve. 16 ...

  • Page 54

    54.

  • Page 55: Installation/maintenance

    55 some of the following manual sections contain warning 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 procedures on this instrument. Installation/mai...

  • Page 56

    56.

  • Page 57: Section 5  Installation

    57 section 5 installation 5.1 unpacking the instrument when removing the instruments from their shipping containers, inspect all units for any damage that may have occurred during shipment. The containers include the ec1000 controller, pump module, electrode, instruction manual, installation kits fo...

  • Page 58

    58 figure 12 controller installation/panel mount.

  • Page 59

    59 5.3.2 wall mounting for wall mounting, remove the two mounting brackets, reverse the brackets, and reattach to the meter, see figure 13. Secure the meter to the wall using screws or bolts (not supplied) through the clearance holes in the mounting brackets. 5.3.3 pole mounting for pole mounting, r...

  • Page 60

    60 figure 14 pump installation 5.5 installing the ph/orp electrode note: improve stability in high purity water by grounding the solution near the electrode. Different mounting equipment is available for the three configurations for mounting the electrode. The electrode can be configured as an in-li...

  • Page 61

    61 figure 15 installing the ph/orp electrode figure 16 flow-thru cell.

  • Page 62

    62 5.5.1 in-line electrode installation a 1-½ ″ npt fitting is required in line, which must be filled with the sample stream (see figure 15 on page 61). Orienting the electrode between 45 to 70 ° from the vertical helps prevent air bubbles from interrupting the signal. Install the mounting collar in...

  • Page 63

    63 5.6 wiring the meter warning wiring connected in this box must be rated at least 300vrms/600vpk. Advertencia los cables de senalizacion conectados a esta caja deben tener una clasificacion de por lo menos 300vrms/600vpk. Adviso a hacao dw sinal conectada nesta caixa deve ter classificaco de pelo ...

  • Page 64

    64 figure 18 controller circuit board 5.6.1 wire preparation because low voltages (voltages separable within the controller enclosure, it is necessary that all customer wiring be 300v or more to assure adequate levels of insulation protection of low voltage wires from high voltage circuits. Addition...

  • Page 65

    65 5.6.2 power warning all electrical connections should be made by a qualified technician to assure compliance to all applicable electrical codes. To meet ul, csa and other applicable instrument safety standards, an external power disconnect switch must be installed. This power disconnect switch sh...

  • Page 66

    66 the recommended size of the power supply leads is 18awg, but can be in the range of 12awg to 18awg. The wires are routed through the center conduit hole and are hooked up to the power connector (see figure 17 on page 63). The power leads are twisted together to fit in the compartment formed by th...

  • Page 67

    67 note: use a twisted-pair, shielded cable. Use of non-shielded cables may result in radio wave emission levels higher than permitted under the compliance regulations listed. The wires are routed through the right conduit hole (see figure 17 on page 63) and are hooked up to j1 and j3 on the front p...

  • Page 68

    68 5.7 pump wiring warning all electrical connections should be made by a qualified technician to assure compliance to all applicable electrical codes. To meet ul, csa and other applicable instrument safety standards, an external power disconnect switch must be installed. This power disconnect switc...

  • Page 69

    69 figure 20 pump module and electrical connections 5.7.1 line voltage selection for electrolyte pump note: misapplication of ac line power to this instrument can cause damage to the instrument. Prior to connection, verify that the voltage select switch is set for the proper ac line requirement. Thi...

  • Page 70

    70

  • Page 71: Section 6 Basic Start-Up

    71 section 6 basic start-up note: this section is not used for the industrial ph electrode (cat. No. 48276-00). 6.1 introduction in the following sections the various preliminary tasks necessary to make the process ph/orp system operational are defined in their recommended sequence. Once these preli...

  • Page 72

    72 6.3 purging the system 1. Remove the storage cap from the electrode. 2. Loosen the four screws on the face of the pump to allow fluid through the pump tubing. 3. Connect the syringe (with the plunger all the way in) to the side port of the priming tee. 4. Turn the priming tee handle to the fill p...

  • Page 73

    73 6.4 calibration see section 2.3 calibration. Figure 21 priming tee operation.

  • Page 74

    74.

  • Page 75: Section 7 Serial Interface

    75 section 7 serial interface 7.1 installation warning wiring connected in this box must be rated at least 300vrms/600vpk. Advertencia los cables de senalizacion conectados a esta caja deben tener una clasificacion de por lo menos 300vrms/600vpk. Adviso a hacao dw sinal conectada nesta caixa deve te...

  • Page 76

    76 figure 22 rs-232c interface configuration 1 2 3 4 5 6 7 tb1 host computer 25 ckt d-subminiature female 1 2 3 4 5 6 7 tb1 13 1 14 25 pin 1 (shld) note 1 pin 3 (rxd) pin 7 (com) tb1-2 (txd) tb1-1 (com) connection citizen printer 25 ckt d-subminiature male note 1: shield ground is normally tied at o...

  • Page 77

    77 7.2 rs-232c interface configuration the rs-232c interface configuration is suitable in cases where the distance between the analyzer and an external device is relatively short (50 feet or less). Longer distances make the interface connection vulnerable to electrical interference and data transmis...

  • Page 78

    78 this configuration does not provide the isolation that may be required at the computer or printer interface. Table 9 explains the function of each of the individual jumper closures. Table 11 current loop customer connection box post no. Description function 7 current loop in (+) data input loop, ...

  • Page 79

    79 figure 23 recommended current loop hookup current source current source 7 6 1 5 4 20 ma source 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 providin...

  • Page 80

    80

  • Page 81

    81 section 8 electrode and pump maintenance note: pump module is not used with the industrial ph electrode (cat. No. 48276-00). 8.1 electrode maintenance 8.1.1 general electrode maintenance the measuring glass portion of the electrode is not greatly affected if the unit is stored dry for short perio...

  • Page 82

    82 4. Screw the new sensor assembly into the electrode body using the sensor wrench. Two o-rings are required for proper seating. Make sure the loading nut is flush with the end of the electrode body (see figure 24). 8.1.4 replacing electrolyte one 500-ml bottle of electrolyte lasts over one month. ...

  • Page 83

    83 figure 24 sensor replacement.

  • Page 84

    84 8.1.5 crystal formation in reference tube the electrolyte solution for the reference portion of the electrode contains 1.5n kcl in 40% glycerol in water solution. Should some portion of the electrode dry out, crystals may interfere with the free flow of electrolyte. These deposits are easily remo...

  • Page 85

    85 figure 25 hach one ph process electrode.

  • Page 86

    86 8.1.7.3 industrial ph electrode shelf life and storage rotate and check electrode stock once a year. Prolonged storage on the shelf can cause the reference electrode to dry out. To avoid this, perform a routine maintenance as follows: 1. Remove the electrode from its storage box and remove the ca...

  • Page 87

    87 8.1.9 orp electrode cleaning fouling of the platinum sensing element of the orp electrode can cause sluggish response and drift. To clean the electrode, soak it in 1n hcl for 15 minutes. Recalibrate before replacing it in the sample. 8.1.10 industrial ph electrode cleaning some process streams co...

  • Page 88

    88 8.3 fuse replacement warning for continued protection against fire, replace fuses with only fuses of specified type and current rating. Advertencia para una continua protección contra incendios, reemplace los fusibles únicamente por los del tipo y capacidad recomendados. Aviso para proteçao contí...

  • Page 89

    89 figure 26 pump module plumbing diagram.

  • Page 90

    90 8.3.2 pump fuse replacement note: ul/csa type fuses are required for use in north america, and iec type fuses is required for use in europe. The fuses are located on the circuit board under the electrical cover (see figure 20 on page 69). To replace the fuses, disconnect power to the pump and rem...

  • Page 91: Section 9 Troubleshooting

    91 section 9 troubleshooting 9.1 troubleshooting the ec1000 controller 9.1.1 test diagnostic menu the diagnostic menu is a special menu for troubleshooting and setting the user programmable keyboard lockout code. The menu is entered from the normal operating mode (displaying ph or mv) by pressing bo...

  • Page 92

    92 5. Close the system warning relay. 6. Open all relays. Sio test: pressing enter at this menu entry runs a serial i/o loop test. To run this test, connect the serial output back to the serial input (note: the output to input connection can be made at any point, depending on how much of the system ...

  • Page 93

    93 input calibration: this entry calibrates the 4 to 20 ma inputs for the ph electrode and temperature electrodes. 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 pr...

  • Page 94

    94 9.1.2 error codes table 14 error codes error code display error description probable cause corrective action e00 eefail eeprom failure one or more of the data cells either fails to program or losses data. Note in the case of loss of data, internal diagnostics automatically restore the data. Clear...

  • Page 95

    95 9.1.3 system warnings table 15 system warnings display error description probable cause corrective action rom er** rom failure the instrument rom failed. Replace the microprocessor board. Ram er ram failure the instrument ram failed. Replace the microprocessor board. Marginal marginal calibration...

  • Page 96

    96 9.2 troubleshooting the ph electrode table 16 ph electrode troubleshooting* symptom probable cause corrective action the electrode does not calibrate the wiring to the controller is incorrect. Check the electrode cable to controller wiring (see section 5.6.5 electrode wiring ). Make sure the wire...

  • Page 97

    97 the response is slow. The electrode is fouled. The sample coated the ph glass bulb with a solid film. Clean the ph glass bulb (see section 8.1.8 ph electrode cleaning ). The sample is cold and/or of low ionic strength. Raise the temperature of the sample. Long term drift in the ph reading. The el...

  • Page 98

    98 9.3 troubleshooting the orp electrode table 17 troubleshooting the orp electrode symptom probable cause corrective action mv reading does not correspond to cited mv value for standard. Reference electrode/preamp offset. The ag/agcl reference half cell uses a 1.5 m kcl in 40% glycerol electrolyte ...

  • Page 99

    99 table 18 diagnostic test menu key option sub menu description (press enter and clear simultaneously for diagnostic menu) disp tst none perform a display pattern test rly test none perform a relay open/close test sio test none perform a sio loop-back test rec test zero drive recorder output to ful...

  • Page 100

    100 table 19 setup menu key option description setup alarms alarm 1 (al) mode (al1) alarm 1 mode (ph high/low, mv high/low, temperature high/low set pnt (al1) alarm 1 setpoint for ph (-2.00 to +16.00 ph), mv (-2000.0 to +2000.0 mv) and temperature (-5.00 to +105 °c) hyst (al1) alarm 1 hysteresis for...

  • Page 101

    101 setup (cont.) init set c comp (inl) mode ( °c) type of temperature compensation (automatic, manual) set pnt ( °c) temperature setpoint for manual temperature compensation (-5.0 to +105 °c) sol tc solution temperature compensation (- 0.1 ph to + 0.1 ph) serial (inl) baud (ser) baud rate of serial...

  • Page 102

    102.

  • Page 107: General Information

    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.

  • Page 108

    108.

  • Page 109: Replacement Parts

    109 replacement parts ec1000 process ph structure and accessories description cat. No ec1000 ph system with flat bulb electrode...................................................................................................... 46400-01 ec1000 ph system with round bulb electrode .....................

  • Page 110

    110 replacement parts (continued) description cat. No. Fuse, 200 ma, 250v, slow blow (t), ul/csa (for 115 vac line) ..................................................................... 46353-00 fuse, 500 ma, 250v, slow blow (t), ul/csa (for transformer secondary) ......................................

  • Page 111

    111 ph electrolyte pump installation kit............................................................................................................... 46405-00 includes: ....................................................................................................................................

  • Page 112

    112.

  • Page 113: How To Order

    113 by phone: 6:00 a.M. To 5:00 p.M. Mst monday through friday (800) 227-hach (800-227-4224) by mail: hach company p.O. Box 389 loveland, colorado 80539-0389 u.S.A. By telex: 160840 (hach loveland) by fax: (970) 669-2932 (hach loveland) information required • hach account number (if available) • bil...

  • Page 114: Repair Service

    114 for instrument service, please contact the hach service center serving your location. In the united states: hach company 100 dayton ave. Ames, iowa 50010 (800) 227-4224 (usa only) phone: (515) 232-2533 fax: (515) 232-1276 in canada: hach sales & service canada ltd. 1313 border street, unit 34 wi...

  • Page 115

    115 appendix a process ph electrode without internal preamp to accommodate other manufacturers meters, hach offers the free-flowing reference electrode system without an internal preamplifier. A shielded cable is connected directly to the reference and ph sensing half cell and can be terminated with...

  • Page 116

    116.

  • Page 117

    117 appendix b supplemental compliance information instrument engineering bulletin the hach ec1000 shows an accuracy shift when exposed to radio frequency interference of 3 and 10 volts per meter. What this means to you is that if the displayed data is not stable (within the accuracy and repeatabili...

  • Page 118: Appendix B,

    118 373 9.28 3.89 21.8 13.2 385 9.29 5.56 21.8 15.9 420 9.3 6.57 21.9 18.2 430 9.12 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) display w/10v rf ...

  • Page 119: Index

    119 a acid error ..............................................................21 adding electrolyte ................................................71 air bubbles .............................................................72 alarm cable ...............................................................

  • Page 120

    120 m man tc ...............................................................34 manual entry of buffer value ................................40 marginal calibration indication ............................38 maximum tubing length ........................................59 meter fuse replacement .........

  • Page 121

    121 t temperature calibration .......................................41 temperature compensation (c comp) submenu ..33 temperature compensation setup ........................33 titration curve .................................................31 two-point calibration with auto recognition of hach buf...

  • Page 122

    122.

  • Page 123

    123.

  • Page 125

    Ec 1000 ph / orp quick reference guide setup key menu option menu item description alarm options alarm 1 (al) mode (al1) alarm 1 mode (ph high/low, mv high/low, temperature high/low) set pnt (al1) alarm 1 setpoint for ph (-2.00 to +16.00 ph), mv (-2000.0 to +2000.0 mv) and temperature (-5.00 to +105...

  • Page 126

    Record 2 mode (rec) recorder output mode (ph, mv) window (rec) minimum (rec) lower limit of recorder in terms of ph (-2.00 to +16.00 ph), mv (-2000.0 to +2000.0 mv) maximum (rec) upper limit of recorder in terms of ph (-2.00 to +16.00 ph), mv (-2000.0 to +2000.0 mv) out trim (rec) o trim (rec) trim ...

  • Page 127

    Ec 1000 ph / orp quick reference guide calibration menu—cal key option menu item description std 1 (cal) auto std (sd 1) ph calibration point 1 with auto recognition of buffer value man std (sd 1) ph calibration point 1 with manual entry of buffer value std 2 (cal) * * appears only after std 1 is co...

  • Page 128

    Diagnostics test menu (press enter and clear simultaneously) option menu item description disp tst none perform a display pattern test rly test none perform a relay open/close test sio test none perform a sio loop-back test rec test zero drive recorder output to full scale fs drive recorder output t...