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YOKOGAWA SC200, Instruction Manual

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YOKOGAWA SC200 Instruction Manual Download Page 13

IM 12D7B2-E-H

9

Wiring diagrams for power supply

General purpose design

Conductivity transmitter
EXA SC200G

NOTE:
The outside earth terminal should be connected to site ground by a large area
conductor (e.g. a flat earth strip) for best protection against interference.

Sensor

Distributor

Output

Supply

Dependance of load to supply voltage

1200

1000

800

600

400

200

0

1718

20

24

40

Ohm

550

Supply voltage (V)

Load r

esistance (

Ω

)

Summary of Contents for SC200

Page 1: ...Instruction Manual Model SC200 2 wire Conductivity or Resistivity transmitter IM 12D7B2 E H 4th edition...

Page 2: ...E VALUE DISPLAY MESSAGE DISPLAY KEY PROMPT FLAGS SELECTION KEYS YES Accept setting NO change to new setting L L SELECT MODE MEASURE MAINTENANCE Can be used to escape program at any time SELECT MODE ME...

Page 3: ...11 4 2 Output range adjustment OUTPUT 12 4 3 Set up Hold function SET HOLD 14 4 4 Temperature compensation TEMPERATURE 16 4 5 Sensor selection and diagnostics 18 5 MAINTENANCE 20 5 1 Calibration CAL 2...

Page 4: ...t 38 9 2 Resistivity measurement 38 9 3 Maintenance of the transmitter 38 10 SOFTWARE VERSION 3 0 COMPARED TO VERSIONS 1 AND 2 39 10 1 Cell constant 39 10 2 Matrix compensation 39 10 3 Matrix temperat...

Page 5: ...functions In general a conductivity loop can be set up for different purposes To be part of a total process control sys tem To indicate dangerous limits of a process To monitor product quality 1 2 Re...

Page 6: ...tion EMI Class B RFI less than 2 at 5 V m for 20 MHz to 1 GHz G Display method Custom liquid crystal display Main display 31 2digit 12 5 mm high Message display 6 alphanumeric characters 7 mm Special...

Page 7: ...h the operator by giving messages on the second line of the display area and indicating which keys are to be pressed in the display too The keys are scanned continuously and the actions are taken imme...

Page 8: ...ot mounted in direct sunlight and severe weather conditions maintenance activities are possible no corrosive atmospheres The ambient temperature and humidity should be the limits of the specifications...

Page 9: ...IM 12D7B2 E H 5 Universal pipe wall mounting Wall mounting Pipe mounting vertical Pipe mounting horizontal 2 I D pipe 2 I D pipe 115 200 70 4x 10 2x 6 6 56 77...

Page 10: ...e is not to be mounted in tracks together with high voltage and or power switching cables use only the standard conductivity cable with a maximum length of 10 metre mount the transmitter within the di...

Page 11: ...SENSOR TEMPERATURE SENSOR CEL C 10 cm C 1 cm C 0 1 cm C 0 01 cm CEL e g Use cable WU40 LH Max recommended length 10 m Use Cells SC41 or SC42 Range selection Use of 4 electrode cell recommended e g Us...

Page 12: ...on a grounded surface e g a metal frame fixed in the soil the shield of the 2 wire cable may NOT be connected to ground at the distributor If the transmitter is mounted on a non conducting surface e g...

Page 13: ...OTE The outside earth terminal should be connected to site ground by a large area conductor e g a flat earth strip for best protection against interference Sensor Distributor Output Supply Dependance...

Page 14: ...x 0 66 W Zener barrier with resistor Vmax 28 V lmax 93 3 mA Pmax 0 66 W Protective earth Safe area Protective earth Hazardous area Supply Zone 0 of 1 Zone 1 Eex ib Certified distributor with input out...

Page 15: ...hold function on off 5 1 5 2 5 3 Adjusting the output range Activating the hold function Temperature compensation 4 2 4 3 4 4 Fine tuning the performance 7 OUTPUT SET HOLD TEMPERATURE SERVICE COMMISSI...

Page 16: ...span Select digit to adjust or decimal point and units Adjust digit Confirm adjusted value ENT L Return to measurement select output function Select OUTPUT YES NOTE If the output is commissioned to be...

Page 17: ...ity at the end of the output range which corresponds to 20 mA When programming a range which does not start at zero conductivity take care to respect the minimum value corresponding to 60 of the maxim...

Page 18: ...HOLD Access commissioning menu SELECT choice Select SET HOLD Move pointer to SET HOLD NO YES Activate de activate HOLD Change setting Conform setting NO YES Select HOLD fixed or last Change selection...

Page 19: ...p the output frozen during the following events Access to the menu Access to the calibration mode Switching it from the MODE menu HOLD is signalled in the display by a special field The operator is pr...

Page 20: ...HOLD TEMPERATURE SERVICE YES NO YES NO MODE OUTPUT SET HOLD TEMPERATURE SERVICE YES NO YES NO MODE O U T P U T S E T H O L D T E M P S E R V I C E EN T ENT TEMP MAN mS cm Access the maintenance menu S...

Page 21: ...l NaCl solutions In the high conductivity region the effect of temperature decreases and the compensation factor is decreased too In these extreme regions the tempera ture compensation factor is calcu...

Page 22: ...steel epoxy resin PTFE and PVDF The cell determines the principle used to measure the conductivity there is a distinc tion between 2 electrodes and 4 electrodes cells The selection of 2 or 4 electrod...

Page 23: ...IM 12D7B2 E H 19...

Page 24: ...ter to display NO YES End calibration End calibration and return to measurement Continue routine to calibrate second point repeat step 2 YES NO MODE Conform start of adjustment YES Select digit to adj...

Page 25: ...mperature is stabi lised to the reference temperature of the in strument usually 25 C The conductivity of the solution is taken from tables Alternatively the instrument may be calibra ted in an unspec...

Page 26: ...YES NO YES NO MODE MODE M E A S U R E C A L D I S P L AY H O L D YES NO YES NO MODE MODE Access maintenance mode Select Display routine Select display Move pointer to DISPLAY NO YES Read data To read...

Page 27: ...temperature coefficient is program med The choice of temperature units is done from the Service level Error messages have priority over other messages Note Percent by weight is only visible when activ...

Page 28: ...Display will blink HOLD and YES NO 1 Access hold 2 Switch hold on off M E A S U R E C A L D I S P L AY H O L D YES NO YES NO MODE MODE M E A S U R E C A L D I S P L AY H O L D YES NO YES NO MODE MODE...

Page 29: ...s switched on when you press YES when HOLD and YES NO are blinking When you press NO hold will be switched off A flag is kept in memory and an indication is made in the upper left corner of the displa...

Page 30: ...reduced by increasing the measu ring frequency At all values the instrument checks the sig nal from the cell to search for distortion which is typical of capacitive or polarisation errors If there is...

Page 31: ...ure sensor selected Program sensor type Fault in connections Check connections E8 Temperature too low Wrong temperature sensor selected Program sensor type Fault in connections Check connections E10 E...

Page 32: ...ogram ming again 28 Code Routine Use Chapter 01 Temperature sensors and units Select sensor type 7 3 Select C or F 02 Reference temperature Adjust value 7 4 03 Output table or linear Select which to u...

Page 33: ...ription 1 Access service 2 Enter code to select required function 3 Adjust setting see individual routines OUTPUT SET HOLD TEMPERATURE SERVICE YES NO YES NO MODE O U T P U T S E T H O L D T E M P S E...

Page 34: ...set the correct number for it Default value is Pt 1000 for Yokogawa sen sors type SC42 Default C Explanation All measured values are compensated for temperature to refer to comparable values at 25 C...

Page 35: ...e of conductivity range Examples A bilinear B hyperbolic 2 decades C logarithmic 2 decades D linear NOTE Curves are not selectable but can be pro grammed from the tables at right Example of output tab...

Page 36: ...0 1 cm l 7 8 Auto return function ACCESS CODE 06 see 7 2 DISPLAY RET Adjustment X Explanation As a safeguard against long maintenance jobs or inadvertently pushing a button it is possible to let the s...

Page 37: ...sary This is possi ble by sending a special signal over the 2 wire connection to the receiving instrument A signal of 22 mA is used because it is out side the normal analogue range of 4 to 20 mA If at...

Page 38: ...uses interpolation between the entered values As the relation between percent by weight concentration and con ductivity is not linear in most cases the pos sibility to linearize the output to concent...

Page 39: ...scode is selected for an operation level access to that level can only be obtained after ente ring the passcode The display will show a message PASS to indicate the entry of the passcode NOTE For the...

Page 40: ...n body to EEx ia II C or EEx ib ii C where the output current is limited by a resistor R directly in the output line such as that Imax out Vmax out R and not exceeding the following char acteristics V...

Page 41: ...requirements Maximum safe area voltage should not exceed 250 VRMS NON HAZARDOUS LOCATION Class I Division I Groups ABCD Vmax 31 5 V Imax 93 3 mA Ci 5 nF Li 16 5 uH ControlDrawing for EXA 200 instrumen...

Page 42: ...transmitter can be reassembled now following the opposite sequence as described above 9 2 Resistivity measurement As a resistivity measuring transmitter the EXA SC200 has the same function as describ...

Page 43: ...equently there is no need for a 100 coverage If 9 is selected the temperature compensa tion range for the user adjustable matrix can be set in access code 15 In access codes 16 and 19 the specific con...

Page 44: ...nge is 50 C Error code 17 indicates a temperature range of less than 50 C 10 4 Matrix data ACCESS CODE 15 16 17 18 19 Display L1 T1 Adjustment After adjusting the range in access code 14 it is necessa...

Page 45: ...6 the error codes marked with an asterisk normally will trig ger a number of actions If soft alarm action is selected the FAIL message flag is flashing The output func tions will not go into BURN OUT...

Page 46: ...6 1 7 3 3 100 0 7681 0 98 1 3 2 1 3 9 Ammonia 2 0 0 00975 0 122 0 23 0 43 0 82 Conductivity 25 0 0559 0 25 0 50 1 0 2 0 S cm 50 0 1752 0 41 0 80 1 62 3 35 75 0 4092 0 65 1 13 2 3 4 8 100 0 7681 1 1 52...

Page 47: ...IM 12D7B2 E H...

Page 48: ...22 BELGIUM Yokogawa Belgium N V S A Minervastraat 16 1930 ZAVENTEM Tel 32 2 719 55 11 Fax 32 2 725 34 99 FRANCE Yokogawa Contr le Bailey S A V lizy Valley 18 20 Rue Grange Dame Rose 78140 VELIZY VILLA...

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