Hamilton Electronics EPHUM011 manual 100, Calibration at CP6 Product Calibration

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pH ARC Sensors Modbus RTU Programmer’s Manual (EPHUM011)

Example to read the sensor’s quality indicator:

Command: Quality indicator

Modbus address: 4872

Length: 2

Type: 3

Read

Parameter:

Quality [%]

 

 

 

 

Format:

Float

 

 

 

 

Value:

100

 

 

 

 

Figure 2.7.3.1.9: Example to read the sensor’s quality indicator

2.7.3.2Calibration at CP6 (Product Calibration)

The product calibration is a process in order to adjust the measurement of a correctly calibrated pH ARC Sensor to specific process conditions.

Product calibration is a two stage process:

1.An initial measurement is performed while the operator takes a sample of the process solution. At that time point the pH ARC Sensor stores its raw measurement value, temperature and operating hour in the memory.

While the operator takes the sample to the analytics lab for reference analysis the pH ARC Sensor is still running on its prior standard calibration (CP1 and CP2) while the initial measurement data for the ongoing product calibration is kept in the sensor’s memory.

2.When the result of the reference analysis is available this value is assigned, at a second time point, to the former initial measurement data stored in the pH ARC Sensor.

The sensor is now, after valid assignment, running on a calibration function which is compensated for the correct process conditions. The product calibration (CP6) is now active.

Performing a Cancel command for the product calibration (CP6) brings the sensor back to its still stored standard calibration (CP1 and CP2).

If a product calibration is still active and a standard calibration (CP1 or CP2) is performed the product calibration (CP6) is cancelled.

If the operator needs to overrun an active product calibration (old CP6) by a new product calibration (new CP6) the above process applies in the same way. After initial measurement the pH ARC Sensor is still running on the first product calibration (old CP6) until a valid assignment has been done (new CP6).

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Contents PH ARC Sensors Important Notice Sensor Identification and Information Configuration of the Serial RS485 InterfaceConfiguration of the Analog Interfaces Configuration of the MeasurementIntroduction Visiferm do Modbus RTU Programmer’s Manualp/n 624179/01EPHUM011 0x03 Operator levels and PasswordsReading / Setting Operator Level General0x0B 18111978 Changing Passwords for Operator Level0x30 0x0C 18111978Reading the Device Address Limits Configuration of the serial RS485 InterfaceDevice Address Reading and Writing the Device AddressBaud Rate Reading and Writing the Baud RateReading the Baud Rate Limits 0x07 Configuration of the Analog InterfacesAvailable Analog Interfaces Available Analog Interface ModesMA interface #2 Selection of an Analog Interface ModeDescription of the Analog Interfaces 1 MA interface #1Configuration of the 4-20 mA Interface 0x210x01 PH ARC Sensors Modbus RTU Programmer’s Manual EPHUM011 Reading the Selected Physical Unit for Analog Interface 0x001000Defining the Measurement Values for 4, 12 and 20 mA Output PH ARC sensor 4-20mA inte rface linear Defining a Constant Current Output for Testing 0x010001 99186 99742 Reading the Internally Measured Output CurrentDefinition of Measurement Channels and Physical Units MeasurementSpecial 0x201000 Primary Measurement Channel 1 pHDescription of PMC1 Selecting the Physical Unit for PMC1Reading the measurement value of PMC1 0x1000 02503 0x000x200000 175.9922 0x00 954.6541 0x06 Primary Measurement Channel 6 TemperatureDescription of PMC6 Selecting the Physical Unit for PMC60x04 24.35834 0x00 130 Input of an Externally Measured TemperatureDefinition of the Measurement Status for PMC1 / PMC6 Reading the measurement value of PMC6Description of SMC Secondary Measurement Channels0x8000 247.56 Reading the measurement value of SMCAvailable Parameters Configuration of the MeasurementEffect of Moving Average n=1 vs n=16 2 PA9 Moving AverageSelecting the Physical Unit and Writing the Value for PA9 Description of PA9 Moving AverageReading all Values for PA9 3 PA12 Moving Average R Description of PA12 Moving Average RSelecting the Physical Unit and Writing the Value for PA12 Reading all Values for PA12 Available Calibration Points CalibrationCP2 Definitions of Calibration PointsCalibration Points 1 and 2 Standard Calibration CP1CP6 Calibration Point 6 Product CalibrationCalibration at CP1 and CP2 Standard Calibration Calibration ProcedurePH ARC Sensors Modbus RTU Programmer’s Manual EPHUM011 Choose one of the calibration points CP1 or CP2 0x00000000 0x00001000 Calibration at CP6 Product Calibration 100200 Product calibration Initial measurement Definition of the commands for product calibrationProduct calibration Assignment Product calibration CancelProduct calibration Restore product calibration Product calibration Restore standard calibrationReading the Calibration Status of CP1 and CP2 Reading the Calibration Status0x00000080 0x00001000 0x00000180 0x00001000Reading the Calibration Status of CP6 Product Calibration 0x14000000 0x00001000 0x01000000 0x000010000x08000000 0x00001000 0x0A000000 0x000010000x10000000 0x00001000 0x00000004 29.93368 379.5167 Currently active Calibration Parameters part0x00000004 24.35184 23.78 0x00000004 24.37691 16.45607782 59.47631 298.15 003401 179.927 297.1378006804 099747 296.6901 10469 298.3302Special Commands for Calibration with Visical 0x0000003F Calibration StandardsAvailable Sets of Calibration Standards LSB 0x00000001 Set180 Definitions for Individual Sets of Calibration Standards0x0FFF0FFF 0x05540FFF 0x02480FFFNist Standard DINMettler Toledo Radiometer Sensor Status Temperature Ranges168.3667 Operating Hours and CountersCurrently Active Warnings History of WarningsDefinition of Warnings Errors Currently Active ErrorsHistory of Errors Definition of Errors Reading Definition of SIP and CIP SIPCIP 120 130 Reading the Sensor’s Quality IndicatorEPHFI010 Sensor Identification and InformationGeneral Information Sensor IdentificationFree User Memory Space 0001001Freeuserspace 732255 System CommandsRecall Sensor’s Factory Settings Hello WorldPH ARC Sensors Modbus RTU Programmer’s Manual EPHUM011