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IM 12A06S01-00EN-P

18

3.3.2 Slope

The SLOPE is the calibrated efficiency of the sensor unit as a percentage of the theoretical 

slope of the sensor unit. The theoretical slope follows the NERNST equation and is 

59.16 mV/pH (at 25ºC). The SLOPE can be calibrated only after a two- or a three point 

calibration in buffer solutions with a different pH value. A low slope indicates that the sensor 

is not clean or is faulty.

The SLOPE can also be displayed as mV/pH at 25ºC. Settings can be done with the 

Yokogawa HOST system, for details see the belonging User’s Manual. 

Figure 3.1: Zero/slope example

3.3.3 Impedance

The SA11 can measure the condition of the electrodes connected. This is done by 

measuring the electrical resistance, and this can be either high-ohmic or low-ohmic.

If the impedance measurement is set as high-ohmic, the measurement is used for glass 

break detection. The detection limit is set automatically by the sensor characteristics.

In case the impedance measurement is set as low-ohmic, the measurement is used for 

fouling and dry fall detection. Detection limits to be set by Yokogawa HOST system. 

The SA11 impedance measurement depends on the device type and connected sensor.

•  SA11-P1 type in combination with a pH sensor with Liquid Earth (LE) element: 

The SA11 measures both the electrical resistance of the high-ohmic glass membrane 

electrode and the electrical resistance of the low-ohmic reference electrode liquid 

junction. The liquid junction forms the electrolytic contact between the liquid earth and the 

reference electrode. It must be kept clean and filled with conductive electrolyte otherwise 

the measurement will suffer from instability, drift and measuring errors. 

•  SA11-P1 type in combination with a pH sensor without Liquid Earth element: 

The SA11 measures only the electrical resistance of the high-ohmic glass membrane 

electrode.

•  SA11-P2 type in combination with a pH sensor with Liquid Earth element: 

The SA11 measures the electrical resistance of the two high-ohmic glass membrane 

electrodes.

In cases where a Liquid Earth is suitable for ORP measurement, the impedance value 

is based upon the electrical resistance of the low-ohmic reference. For an ORP-pH 

compensated measurement the impedance value is based upon the electrical resistance of 

the (high-ohmic) glass membrane reference. 

pH14

pH0

pH7, 0mV

Theoretical value

+mV

-mV Calibration curve (slope)

Zero

F0410.ai

Содержание SA11

Страница 1: ...IM 12A06S01 00EN P 3rd edition Instruction Manual Model SA11 Smart Adapter...

Страница 2: ...B06W02 02E E WU11 Interconnection cable GS 12B06W02 03E E User s Manual Contents Document number Note SA11 Smart Adapter Start up Manual IM 12A06S01 01Z1 P Attached to the product SA11 Smart Adapter U...

Страница 3: ...ice or obligation If you have any questions or you find mistakes or omissions in the user s manuals please contact our sales representative or your local distributor Drawing Conventions Some drawings...

Страница 4: ...n replacing parts or consumables Modification of the product is strictly prohibited The following safety symbols are used on the product as well as in this manual WARNING This symbol indicates that an...

Страница 5: ...The Instrument is packed carefully with shock absorbing materials nevertheless the instrument may be damaged or broken if subjected to strong shock such as if the instrument is dropped Handle with ca...

Страница 6: ...d billing instructions for return of material plus the name and phone number of a contact person who can be reached for further information Returned goods that have been in contact with process fluids...

Страница 7: ...ARRANTIES INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED IN NO EVENT SHALL THE TEAM OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT...

Страница 8: ...2 1 Direct mounting 14 2 2 2 Cable mounting 15 2 3 Wiring to the HOST system 15 2 3 1 Wired connection 15 2 3 2 Connection in daisy chain concept 15 2 3 3 Wireless connection 16 2 3 4 Grounding 16 2 4...

Страница 9: ...ORP 29 5 1 Temperature calibration 29 5 2 pH calibration 29 5 2 1 Manual calibration 29 5 2 2 Automatic calibration 30 5 2 3 Sample calibration 30 5 2 4 Fully Automatic calibration 31 5 3 ORP rH calib...

Страница 10: ...ture calibration 40 8 2 Cell constant calibration 40 8 2 1 Cell constant manual 40 8 2 2 Cell constant automatic 40 8 2 3 Sample 41 8 3 Temperature coefficient TC 41 9 MAINTENANCE 42 9 1 Periodic main...

Страница 11: ...diately notify the carrier and the relevant Yokogawa sales office Checking the model and suffix code Make sure the model and suffix code on the metallized label affixed to the device housing are in li...

Страница 12: ...e device 1 3 Regulatory Compliance Safety IEC 61010 1 EN61010 1 Category based on IEC 61010 I Note 1 Pollution degree based on IEC 61010 2 Note 2 Note 1 Installation category called over voltage categ...

Страница 13: ...damaged by electrostatic discharge When servicing this device please observe proper procedures to prevent such damage 1 4 Model Suffix Codes Model Suffix code Option code Description SA11 SENCOM Smar...

Страница 14: ...1 Direct mounting The SA11 can be installed directly on top of the Yokogawa labelled sensor by means of the Variopin connection system In this case the temperature limit of the device is determined b...

Страница 15: ...with WE10 H D 003 V2 2 3 Wiring to the HOST system 2 3 1 Wired connection The Yokogawa HOST system is connected to the SA11 using the WU11 type S interconnection cable with at one end wired terminals...

Страница 16: ...le of the installation To prevent ground loop by this different potentials it is necessary to disconnect one of the ground references This can be done at the HOST side by disconnecting the wire 82 of...

Страница 17: ...RP electrode equipped with an ID chip which is suitable for the process When connected to the SA11 and powered part of the setup of the SA11 will be done automatically by reading the content of the ID...

Страница 18: ...a HOST system The SA11 impedance measurement depends on the device type and connected sensor SA11 P1 type in combination with a pH sensor with Liquid Earth LE element The SA11 measures both the electr...

Страница 19: ...libration intervals are set by the Yokogawa HOST system for details see the belonging User s Manual 3 4 4 Last calibrated The last calibrated is the date on which the last sensor calibration was perfo...

Страница 20: ...RO SLOPE IMP1 IMP2 Progress time This is the time in between 0 and actual operating hours of the sensor Heat cycle This is a counter which counts the settable temperature step changes up or down of a...

Страница 21: ...ing User s Manual 3 5 Output setup The SA11 Smart Adapter is normally always in operation mode Only a dedicated HOST FLXA402 expert HOST can set the SA11 in three 3 other modes Sleep all operations wi...

Страница 22: ...P calculated output data is disabled In case of a SA11 P1 type and a sensor without LE some features will be disabled or restricted Reference impedance check see section 3 3 3 and reference impedance...

Страница 23: ...ase the temperature compensation is performed by extrapolation of the matrix values When temperature or pre compensated value is outside this deviation range no calculated value will be generated NEN6...

Страница 24: ...following values are also recalculated automatically to the new unit o Manual temp o Reference temp o Temp coefficient o Temp ranges in the matrix ZERO The ZERO can be set in pH or mV which is in lin...

Страница 25: ...tings can be made MODBUS address The MODBUS address Slave ID is default set to 1 but can be set by HOST system to another address in between 1 and 247 Serial profile MODBUS is an application layer mes...

Страница 26: ...means that there is no result of calculated output data Note 3 CRC Cyclic Redundancy Check which is data verification Note 4 Limit set depends on capabilities of the HOST system Note 5 SA11 has an in...

Страница 27: ...m 1500 mV up to 1500 mV ORP too low Limit to be configured by user from 1500 mV up to 1500 mV rH too high Limit to be configured by user from 0 up to 100 rH too low Limit to be configured by user from...

Страница 28: ...ese events are distinguished in two types calibration events and alarm events each having their own logbook Each event contains the following data each item 4 bytes Date based upon seconds starting fr...

Страница 29: ...buffer selection see section 4 1 10 Note When a sensor is replaced or exchanged a reset of the wellness data is not necessary If a user wants to reset this data anyhow this is possible by the Yokogaw...

Страница 30: ...on settings and perform calibration using the HOST system ZERO SLOPE ITP Calibration is performed in a sequence predefined by HOST of the solution that works with the buffer solution selected in calib...

Страница 31: ...uffer Three types of user defined buffer tables can be defined These buffer tables are default defined as sodium buffers 4 00 7 00 and 10 00 The buffer tables have to be set by an expert Yokogawa HOST...

Страница 32: ...ly to the last calibrated cell constant value when connected to the sensor When sensor is used the first time this last calibrated cell constant is the calibrated factory cell constant This value is p...

Страница 33: ...n a new calibration will lead to a crossing of the upper limit or lower limit set for a difference in percentage in between the actual cell constant and the calibrated factory cell constant The date i...

Страница 34: ...bed sterilization time b This event is counted because the duration exceeds the prescribed sterilization time c This event is counted because the duration exceeds the prescribed sterilization time How...

Страница 35: ...R TC1 R NaCl R matrix1 Output2 SC SC TC2 SC NaCl SC matrix2 R R TC2 R NaCl R matrix2 Conc1 Conc linear Conc matrix1 Conc output1 Conc2 Conc linear Conc matrix2 Conc output2 USP23 7 1 2 Temperature set...

Страница 36: ...le or by linear interpolation using a concentration table The choice for which calculation method is used can be set by HOST system 7 1 6 USP23 USP stands for United States Pharmacopeia and is basical...

Страница 37: ...does not stabilize within the time set for stabilization default 5 seconds the calibration procedure is aborted o Calibration interval Set the interval in which a new calibration must take place If th...

Страница 38: ...a number SA11 not working Not a number Critical sensor failure Not a number ID chip sync Not a number Temp too high note 4 Max limit set by HOST for 260 C 500 F or 250 C 482 F Temp too low note 4 Min...

Страница 39: ...ion mode HOLD mode and Sleep mode Note When SA11 is in sleep mode all operations which result in output data will be disabled Communication however remains active 7 4 Logbook configuration Logbooks ar...

Страница 40: ...e done by the HOST system For cell constant it can be done for manual automatic or by sample Note The standard instrument to be used in calibration with a process solution must always be accurate Yoko...

Страница 41: ...between equipment causes an error The standard conductivity meter to be used should always be based on the accurate and same temperature compensation calculation method 8 3 Temperature coefficient TC...

Страница 42: ...may otherwise be prone to problems Please use the dust caps in case the SA11 is not used Make sure that the connectors are correctly fitted when the device is re installed in order to maintain the wea...

Страница 43: ...heck the grounding of the system see Section 2 3 4 Be sure that a sensor is connected to the SA11 before powering the system If not the SA11 configuration can be wrong resulting in device errors By co...

Страница 44: ...2_temp_coef 0 10 10 mV F pH_grab_offset 0 300 300 mV pH_zero 0 600 600 mV pH_slope 100 70 110 pH_ITP 7 0 14 pH pH_zero2 NaN 600 600 mV pH_slope2 NaN 70 110 ORP1_grab_offset 0 500 500 mV ORP1_zero 0 50...

Страница 45: ...ge 0 05 0 01 10 00 calibration_interval 250 1 250 days buffer_acceptance_range 1 000 0 001 5 000 pH Communication settings Modbus_address 1 1 247 Serial_profile 1 1 2 Diagnostics settings diag_imp_pHO...

Страница 46: ...T C 0 5 10 15 20 25 30 35 40 45 50 55 60 4 0 pH US 4 000 3 998 3 997 3 998 4 001 4 005 4 001 4 018 4 027 4 038 4 050 4 064 4 080 7 0 pH US 7 120 7 090 7 060 7 040 7 020 7 000 6 990 6 980 6 988 6 978 6...

Страница 47: ...dard as well as the best buffer capacity the ability to resist pH change with contamination Matrix temperature compensation Table A 2 7 shows the defaults for the matrix temperature compensation selec...

Страница 48: ...when sensor without ID is connected to SSA Temperature element not detected pH too high pH too low pH temp comp warning ORP too high ORP too low rH too high rH too low IMP1 low too high IMP1 low too...

Страница 49: ...260 500 C F temp_warning_low_limit 40 40 40 40 260 500 C F conductance_warning_high_limit 0 25 0 500 S conductance_warning_low_limit 1 0 500 S resistance_warning_high_limit 2000000 0 100000000 resista...

Страница 50: ...0 0749 0 1080 0 1390 0 1850 0 2870 0 3890 0 5920 4 30 C 0 0720 0 0781 0 0851 0 1030 0 1400 0 1780 0 2350 0 3670 0 4990 0 7630 5 40 C 0 1150 0 1190 0 1240 0 1430 0 1810 0 2240 0 2890 0 4520 0 6140 0 9...

Страница 51: ...1 0 3740 0 5360 0 6070 0 7030 0 7810 0 8225 0 8540 0 8860 5 43 3 C 0 0000 0 2574 0 4130 0 5945 0 6735 0 7835 0 8755 0 9250 0 9635 1 0045 6 54 4 C 0 0000 0 2763 0 4450 0 6455 0 7315 0 8535 0 9600 1 018...

Страница 52: ...599 5 40 C 0 1149 0 1177 0 1212 0 1291 0 1588 0 2234 0 4617 0 8904 1 3261 1 7636 6 50 C 0 1744 0 1781 0 1819 0 1901 0 2198 0 2838 0 5316 0 9969 1 4758 1 9584 7 60 C 0 2517 0 2586 0 2626 0 2711 0 3009...

Страница 53: ...4 25 C 0 0000 0 1780 0 3490 0 4760 0 6030 0 6655 0 7186 0 7717 0 8119 0 8520 5 30 C 0 0000 0 1900 0 3665 0 5002 0 6339 0 7065 0 7619 0 8172 0 8555 0 8938 6 40 C 0 0000 0 2110 0 4095 0 5588 0 7081 0 7...

Страница 54: ...rgin is set at 20 for example a USP margin warning will be flagged when the non temperature compensated conductivity goes higher than the 80 of the limit value at all temperatures For example if the t...

Страница 55: ...chip sync failure SSA temp out Design spec SSA temp out Operating spec SENSOR ID detect when NO ID CHIP Only possible when sensor without ID is connected to SSA Temperature element not detected SC to...

Страница 56: ...ome Musashino shi Tokyo 180 8750 Japan www yokogawa com YOKOGAWA CORPORATION OF AMERICA 2 Dart Road Newnan GA 30265 USA www yokogawa com us YOKOGAWA ELECTRIC ASIA Pte LTD 5 Bedok South Road Singapore...

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