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Содержание DO400

Страница 1: ...Instruction Manual MODEL 00400 Dissolved Oxygen Converter EX YOKOGAWA 1M 12J681 E H 3rd Edition April 1994 ...

Страница 2: ... of output signals and contacts 11 3 5 Wiring of sensors 12 4 COMMISSIONING 4 1 Operation overview 15 4 2 Setpoints adjustment SETPOINTS 16 4 3 Output range adjustment RANGE 18 4 4 Set up HOLD function SET HOLD 20 4 5 Activating the WASH timer WASH 22 4 6 Sensor selection and diagnostics 25 5 MAINTENANCE 5 1 Air calibration 5 2 Water calibration 5 3 Manual calibration 5 4 Selecting a value to disp...

Страница 3: ...3 4 Wiring of output signals and contacts 11 3 5 Wiring of sensors 12 4 COMMISSIONING 4 1 Operation overview 15 4 2 Setpoints adjustment SETPOINTS 16 4 3 Outut range adjustment RANGE 18 4 4 Set up HOLD function SET HOLD 20 4 5 Activating the WASH timer WASH 22 4 6 Sensor selection and diagnostics 25 5 MAINTENANCE 5 1 Air calibration 5 2 Water calibration 5 3 Manual calibration 5 4 Selecting a valu...

Страница 4: ...T FOR ADJüSTMENT A ADJUST DIGIT TO DECREASE PASS THROUGH ZERO ENT ENTER NEW VALUE MODE SELECT MODE MEASURE MAINTENANCE CAN BE USED TO ESCAPE PROGRAM AT ANY TIME MENU POINTER FLAGS CONTACT OUTPUTS LEOS SIGNAL THE STATUS OF THE CONTACTS c c MENU FOR MAINTENANCE FUNCTIONS SEE CHAPTER 5 MENU FC R COMMISSIONING FUNCTIONS SEE CHAPTER 4 SELECT MODE MEASURE COMMISSIONING ...

Страница 5: ...og timer will always return the instument to the normal operating status after heavy interference or power drops The microprocessor in this instrument is further used for continuous sensor diagnosis flexible on site commissioning advanced output relay functions and fine tuning In géneral a measuring loop for dissolved oxygen in water can be set up for a number of purposes To be part of a total pro...

Страница 6: ...hysteresis and delay time t predefined as a wash timer with adjustable wash interval and relaxation time for controllng the wash cycle reprogram mabie as an alarm contact S3 3 FAIL Contact Status Notes E Contact Input F Power supply Voltage Consumption G Climatic Conditions Ambient temperature Storage temperature Relative humidity Weather protection signalling a fault of the measuring loop all con...

Страница 7: ...for standard DIN sized panels 144 x 144 mm 144x144x131 mm 225 x 225 x 220 mm approximately 2 5 kg non volatile memory EEPROM manipu lation passcode protected checking the microprocessor return to measurl iment when no key is pushed for 10 min EMI class B RFI less than 2 at 5 Vim for 0 1 to 1000 MHz both tests according to IEC 801 no effect reset to measurement 2 2 Functional specifications A Input...

Страница 8: ...c set of 6 keys accessible through the flexible window cover The keys are scanned continuously and actions are taken immediately An extensive checking of limiting values and parameters is implemented in the softare When limits are exceeded an error message is shown on the display and when significant for the reliability the FAIL contact is switched too The transmitter can be powered from AC or DC ...

Страница 9: ...sphere The ambient temperature and humidity should be within the limits of the specifications f 3 1 2 Mounting methods The EXA 00400 transmitter has universal mounting possibilities Panel mounting using the optional brackets Wall mounting using th optional brackets First the brackets are fixed to the housing then put fixing screws through the brackets into the wall Pipe mounting using the two opti...

Страница 10: ...6 WALL AND PIPE MOUNTING Unit mm inches Wall Mounting T 0 1 144 5 67 200 7 87 0 1 0 L 0 0 Pipe Mounting Pipe Mounting Vertical Horizontal I T I I I I I I I I I I I I I I Figure 2 1M 12J6B1 E H ...

Страница 11: ...ws 2 Swing the display board to the left like a door 3 The upper terminal strip is now visible Remove the screen plate covering the lower terminal strip 4 Start by connecting the power and contact outputs See the instructions in 3 3 and 3 4 Use the 3 glands at the back of the housing see fig 4 5 Replace the screen plate over the lower terminals 6 Connect the analogue output and sensor cables See t...

Страница 12: ...8 Figure 3b 1M 12J6B1 E H DIGITAL BOARD WITH LCD AND KEYS ANALOGUE IN AND OUTPUT TERMINAL GLANDS 5 ...

Страница 13: ... 9 Glands to be used lor cabling f l l I Ii 11 i i I I I I I I if i L____n__ I L __________ I i L ______ I i i l I I I I Figure 4 Figure 5 Grounding Figure 6 Glands 1M 12J6B1 E H ...

Страница 14: ...tive outlet and terminal 2 to the negative outlet see fig 7 Terminal 3 is for the power ground This is separated from input ground by a galvanic isolation 1M 12J6B1 E H 3 3 2a Grounding the housing To protect the instrument against interference the housing should be con nected to ground by a large area conductor This cable can be connected to the back of the housing using a braided wire cable with...

Страница 15: ...liances The third contact WASH S3 is pre defined as a wash timer controlling the cleaning of the sensor 11 An input is provided for a remotestart of the wash cycle It is possible to program the third contact as a procss alanm of controlling function too See 7 13 for programming the other functions The settings for the wash timer are programmed from the maintenance level 4 5 The fourt contact FAIL ...

Страница 16: ...on of the sensor cable Connecting the sensor cable through the gland located in the front right of the instrument The weather tight gland should be fasened hand tight only Connect the wires of the sensor cable to the terminals as shown in the wiring diagram 1M 12J6B1 E H 3 5 3 Liquid earth The diagnostic features include a membrane integrity check This requires a Liquid Earth connection to termina...

Страница 17: ... c 13 Connection Diagram DOX8SM Sensor IE T1 T2 RE Grey Connection Diagram PB30 Sensor IE T1 T2 RE Gr Green Rd Red Wt White Bk Black YI Yellow Br Brown 1M 12J6B1 E H ...

Страница 18: ...1 14 A 1M 12J6B1 E H ...

Страница 19: ...ditional values 5 4 HOLD Switch hold function on off 5 5 COMMISSIONING SETPOINTS Adjusting the setpoints for the contacts 4 2 Operation by key when cover is RANGE Adjusting the output range 4 3 removed SET HOLD Activating the hold function 4 4 WASH Activating the wash timer 4 5 SERVICE SERVICE Fine tuning the performance 7 Operation by coded entry from commissioning Note All 3 levels can be separa...

Страница 20: ...H SETPOINT TO ADJUST SE N Jl Sf TP I RANGE SET HOLD WASH SERVICE YES NO MODE CJ CJ CJ 0 Display will show SETP1 Note SETP 1 is for the contact output marked S1 SETP2 for S2 From the factory S 1 is programmed as a high alarm function at 19 5 mg 1 S2 is programmed as a low alarm function at 0 5 mg 1 To change the functioning of output contacts refer to 7 12 13 To Change the WASH contact into a third...

Страница 21: ...A 00400 In addition it is possible to activate a special 22 mA and 1100 mV signal on the output when FAIL is on see 7 5 4 2 ADJUSTING THE SETPOINTS 17 2 How does it work As an example we will describe what happens when the process value exceeds the high alarm setpoint of S1 When the process value rises above the setpoint of S 1 the delay time of the relay contact starts After the delay time has pa...

Страница 22: ...MODE 0 Display will show 0 113 ADJUST HIGH SPAN DO VALUE laDD SETPOINTS iIØØ wrn RANGE SET HOLD WASH SERVICE YES NO 1I0DE 0 Display will show 100 UIi I MODE I ESCAPE TO MEASURE can be used at any stage to abort operation WARNING If the HOLD function is activated the instrument returns with the question HOLD flashing answer YES or NO or MODE again to return to measurement 1M 12J6B1 E H ...

Страница 23: ... a safety area of 2 5 at the high end of the output signaL Values above 20 5 mA or 1 025 V are not related to input values and signal a malfunction 4 3 RANGE ADJUSTMENT 2 How to adjust Simple example The EXA 00400 has to be programmed for a range of 5 to 15 mg l Adjust 0 to 5 0 mg l Adjust 100 to 15 0 mg l The instrument will now correct its calcula tions for the output signal accordingly 19 3 Cal...

Страница 24: ...tus H OFF Hold not active H ON Hold activated H FIX Hold fixed value H LST Hold last value 113 SELECT VALUE TO HOLD IHOLDI f2ll II SETPONTS IHmR RANG I wm SET HOLD WASH aEAYICI YES NO MODE c c c 0 H mA Fixed mA value H mV Fixed mV value f ESCAPE TO MEASURE can be used at any stage to abort operation WARNING If the HOLD function is activated the instrument returns with the question HOLD flashing an...

Страница 25: ...NCTION 21 2 How does it work The HOLD function has to be activated from the commissioning menu SET HOLD before it can be used The EXA D0400 will keep both outputs frozen during the following events Access to the commissioning menu key Access to either of the calibration modes Switching it from the maintenance menu MODE key HOLD iS signalled in the display by a special flag The operator is prompted...

Страница 26: ...g the wash timer ON you will have to set the timer values or accept previously programmed values The WASH timer will start either when the remote switch is closed or the interval time has run out See note 2 on next page Display shows in sequence il hr lnterval time between wash cycles in hours iW min Wash time in minutes iR min Relaxation time after wash time in minutes l See note 3 on next page E...

Страница 27: ...s necessary to get the output contacts in a safe position during the WASH cycle If HOLD iS not activated the output contacts will be in an undefined state during WASH In some cases this is unacceptable it is up to the user to decide on this point l Note 3 During the activity of the wash timer the display will show W ASH on the second Iine and the W ASH LED will light During the relaxation time the...

Страница 28: ... it work The timer inside the EXA 00400 has 3 separate settings The actual cleaning time is called the wash time in minutes The interval time is the time between each cleaning action in hours The relaxation time in minutes is a recuperation period for the sensors after cleaning has taken place and normal measurement can be restored During both wash time and relaxation time the output signals and c...

Страница 29: ...a current an error message E2 is given Refer to the troubleshooting section for further help The second check is on the slope of the sensor in use The calibration in water or in air gives an indication of the sensitivity in pAmg 02J of the sensor The value is set in the Service chapter The check warns if the sensitivity is less than 40 or more than 200 of the normal value This is signalled by an e...

Страница 30: ...lay shows WAIT and flashes while the instrument searches for stable measurement 113 END CALIBRATION f MODE 555 MEASURE fRL ENJJ AIR CAL H20 CAL DISPLAY YES r NO MODE c e 51 Cal end end of calibration After confirming the end of calibration the new slope is checked to be within limits If not an error message E3 will be displayed I MODE I ESCAPE TO MEASUREMENT can be used at any stage to abort opera...

Страница 31: ...o much and remain at your last found calibration intervaL Do not exced long interval during seasonal influences 5 1 AIR CALIBRATION 2 How does it work A The instrument asks to start the air calibration B The sensor is taken out of the water C The display will show WAIT when the instrument is waiting for a stable value O The display will show CAL ENO when a stable value is reached E Push YES to end...

Страница 32: ...DE c S1 0 calibration in oxygen free solution Wait for a stable value Display shows WAIT and flashes while instrument searches for stable value Cal end end of calibration After confirming the end of calibration the After confirming the end of calibration the new slope is checked to be within limits If new slope is checked to be within limits If not an error message E3 will be displayed not an erro...

Страница 33: ... the new slope is within limits the new values are calculated 5 2 H20 CALIBRATION 3 100 calibration Use a solution fully saturated with air as calibration solution Place the sensor into a beaker filled with water bubble and stir up the water Wait until the value is stabilised press YES at CAL END and the EXA 00400 is calibrated Re install the sensor into the holder and the process after calibratio...

Страница 34: ...ation NOTE Temperature is shown in the second line 113 END CALIBRATION I MEASURE fRL EtJJJ AIR CAL H20 CAL DISPLAY HOLD NO CONTACTS yes MODe t CAL END End of calibration Error E19 indicates manual calibration is not acceptable I MODE I ESCAPE TO MEASUREMENT can be used at any stage to abort operation WARNING If the HOLD function is activated the instrument returns with the question HOLD flashing a...

Страница 35: ...ed buffers There is no programmable buffer No automatic Calibration 5 3 MANUAL CALIBRATION 31 2 How does it work A Take a sample from the process B Measure the DO with an off line DO meter which has been previously cali brated and is equiped with an automatic temperature compensation C Adjust the value of the in line EXA 00400 transmitter to the measured value O Any values outside the normal opera...

Страница 36: ... output signal slope zerocurrent softare release 113 REPROGRAM DATA DISPLAY MODE MEASUR 2 ø Lf 0 f IReAL H20 CAL DISPLAY i YES NO MODE C C C e The second line of the display will show the possibilities C mA mV Si ZR Rei Parameter temperature saturation output signal output signal slope zerocurrent softare release ESCAPE TO MEASUREMENT can be used at any stage to abort operation WARNING If the HOLD...

Страница 37: ...version is an indication for the servicing of the instrument and cannot be fixed in the display mg l ppm Sat are units for actual values but displayed on a separate sticker mA Actual current output mV Actual voltage output 3 Example To check the value of the output signal 4 to 20 mAl it is displayed on the second line Suppose the measuring range is 5 to 15 mg l and the mA signal is 4 to 20 mA The ...

Страница 38: ...ODE c MODE Display will blink HOLD and YES NO r i 51 Note This function can only be used if activated during commis sioning see 4 4 f I MODE I ESCAPE TO MEASURE can be used at any stage to abort operation WARNING If the HOLD function is activated the instrument returns with the question HOLD flashing answer YES or NO or MODE again to return to measurement 1M 12J6B1 E H ...

Страница 39: ...ON or OFF HOLD is switched on when you press YES when HOLD blinks When you press NO HOLD is switched OFF A flag is kept in memory and an indication is made in the upper left corner of the display field The HOLD function influences all output signals This means that the output contacts are switched off and no alarming takes place The FAIL function is still active The operator is prompted to switch ...

Страница 40: ...36 1M 12J6B1 E H ...

Страница 41: ...ted with an asterisk n also trigger the FAIL alarm contact and can thus be detected from a distance 37 It is also possible to activate a special output signal 22 mA and 1 1 V in FAIL conditions After calibration the calculated zero and slope are checked to see if these are still within the Iimits specified in the softare Under normal conditions the zero will not deviate A decrease of the slope cou...

Страница 42: ...maged Replace diaphragm electrolyte E4 Membrane failure Membrane perforated Replace membrane E7 Temperature high error 50 C Process temperature too high Correct settings 7 4 Wrong sensor programmed Check connections and sensor Temperature sensor damaged ES Temperature low error oe O C Process temperature too low Correct settings 7 4 Wrong sensor programmed Check connections and sensor Temperature ...

Страница 43: ...justed Exceeds limits sensor type E17 Span on mA or mV output too small Incorrect programming by user Correct programming e 10 C E19 Entered value not acceptable Incorrect programming by user Correct programming E20 Instrument not initialised Initial setting lost Call your nearest YOKOGAWA office E21 Check sum of Eeprom not OK Fault in electronics Call your nearest YOKOGAWA office When errors appe...

Страница 44: ...s fine tuning of the instru ment gives a superior performance over analog 2 wire instruments If a function has to be adjusted it is called up with the code mentioned Having selected the code gives you the possibility either to activate or adjust the values for this function After this you wil return to the entry point to make other adjustments or go back to the measuring status If errors are made ...

Страница 45: ...rent signal output 7 10 32 T OUTP Temperature output 7 11 33 DAMP Demping response 7 12 E CALIBRATION FUNCTIONS 40 tn SEC Stabilisation check 7 13 L mgll 41 0 Zero calibration 7 14 42 ZERO Zero slope setting 7 15 SLOPE F CONTACT OUTPUT 50 S1 Function of contact 1 7 16 51 S2 Function of contact 2 7 16 52 S3 Function of WASH contact 7 17 53 D TIME Settings for the proces alarm function 7 18 HYST G S...

Страница 46: ...TER CODE TO SELECT REQUIRED FUNCTION 1111 lfDJlE ET INT RANGE min YES NO IIDE C C c 0 Display will show CODE 13 ADJUST SETTING 11 15RL TYmin YES C NO C MODE C o Display shows current setting Values adjusted access to individual routine description I MODE I ESCAPE TO MEASURE can be used at any stage to abort operation WARNING If the HOLD function is activated the instrument returns with the questio...

Страница 47: ...operation T sENS 0 Pt1000 1 PB36 DISPLAY Adjustment Explanation The indication here determines which tempe rature sensor is connected to the instrument Check which sensor will be used in your plant and set the correct number for it Yokogawa sensors are available with PB36 elements Default 1 PB36 43 7 5 Temperature adjust ACCESS CODE 11 see 7 2 for operation T ADJ Correction for cable resistance DI...

Страница 48: ...t adjustments are fixed for slope adjustment used in the calibration procedure Default 1 50 im membrane thickness 1M 12J6B1 E H 7 7 Display unit ACCESS CODE DISPLAY Adjustment 20 see 7 2 for operation DISP 0 mg l 1 ppm 2 saturation Explanation The default setting of 0 gives an indication in units mg l These units can be displayed with a separate self adhesive sticker on the textplate When another ...

Страница 49: ...ion mA 0 0 20 mA 1 4 20 mA DISPLA Y Adjustment Explanation The current output signal is determined by the setting here The mA output and the fixed voltage output 0 1 V are a linear function against DO or temperature see setting at 7 11 The outputs are limited to a 2 5 over range 20 5 mA and 1025 mV The outputs can be programmed to give 22 mA and 1100 mV in a FAIL condition see 7 9 The output signa...

Страница 50: ...a for automatic calibration stabilisation time and DO in mg 1 DIS _AY Adjustmönt Explanation The criteria for deciding whether a value has stabilised during calibration is set in the factory to a rate of O OS mg I during 300 seconds Depending on the specific needs of your sensor system this parameter can be changed Please keep in mind that changing both values will not always change the criteria i...

Страница 51: ...ocess alarm 2 High process alarm DISPLAY Adjustment Explanation The settings determine the function of the first or second output contact S1 code 50 or S2 code 51 If the first digit is either a 1 or 2 the contact is activated and the setpoints can be adjusted in the SETPOINTS menu see 4 2 Default 50 2 51 1 7 17 Functioning of the WASH contact ACCESS CODE 52 see 7 2 for operation S3 0 1 DISPLA Y Ad...

Страница 52: ...tpoint and hysteresis see Fig 1 The setting of one hysteresis value in mg I and delay time is made from this entry This setting is valid for all contacts S1 S2 and S3 In the case of a low high process alarm contact the hysteresis is added to subtracted from the setpoint value before action is taken Defaults 2 s delay time 0 1 mg I hysteresis 1M 12J6B1 E H t DO Setpoint Figure 11 LED off Delay time...

Страница 53: ...ponds for a membrane thickness of 25 Ilm A membrane thickness of 50iim corresponds with 3 87 pA nominal value If not ERROR E3 will be generated The third right hand digit controls the sensor impedance checking function The DO sensor is checked for low impedance between the Ag electrode and a liquid earth to detect membrane integrity If the impedance happens to be low ERROR E4 is generated Default ...

Страница 54: ...imple password When a password is selected for an operation level access to that level can only be obtained after entering the password The display will show a message PASS to indicate the entry of the password Default 0 0 0 No Password protection Note For the Maintenance and Com missioning level the password entry is always requested when entering from the measure mode For the Service level the p...

Страница 55: ...51 1M 12J6B1 E H ...

Страница 56: ...ELL 50 S1 20 DISP 51 S2 21 T CODE 52 S3 30 BURN 53 D TIME 31 mA HYST 32 T OUTP 60 CHECK 33 DAMP 70 RET 40 t sec 71 PASS mg I 72 ERASE Coded service settings User CODE Function Setting CODE Function Setting 1 SAL TY 41 0 10 T SENS 42 ZERO 11 T ADJ SLOPE 12 I CELL 50 Sl 20 DISP 51 S2 21 T CODE 52 S3 30 BURN 53 D TIME 31 mA HYST 32 T OUTP 60 CHECK 33 DAMP 70 RET 40 t sec 71 PASS mg I 72 ERASE Coded s...

Страница 57: ...ticker can be placed on the front of the instrument below the keys and is visible through the window The small stickers from sheet 1 can be used when the WASH contact is programmed to function as a normal alarm Stick it over the lettering besides the LED indicators The stickers from sheet 2 are transparent and can be fixed to any relevant surface or book as a reminder of the error mes sages The sm...

Страница 58: ...hnrque 33 1 46 30 35 81 ZJR5T de Meylan 31 chemin du Vieux Chêne 38240 MEYLAN Tel 33 76 41 8500 Telex 980374 Teletax 3376418570 SPAIN Yokogawa España SA C Madre de Dios 6 28016 MADRID Tel 34 1 3459237 Teletax 34 1 345 80 48 o iji UNITEO KINGOOM Yokogawa United Kingdom ltd Stuart Road Manor Park Runcorn CHESHIRE WA7 HR Tel 44 0 928 579879 Teletax 44 0 928 579899 00HNS N YO KrdGAWA JOHNSON YOKOGAWA ...

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