12 Calibration; Ph Sensor Calibration; Auto Buffer Cal - ABB AWT210 Operating Instruction

42 AW T 2 1 0 | 2 - W I R E C O N D U C T I V I T Y, P H/O R P, P I O N T R A N S M I T T E R | O I/A W T 2 1 0 - E N R E V. C

12 Calibration

pH sensor calibration

Auto Buffer Cal

Performs a 2 point calibration using 2 pre-defined buffer
solutions – see Auto Buffer Setup, page 32.
Available only if Measurement Type = pH.
1 Immerse in Buffer 1
The details of buffer solution 1 are
displayed.
Immerse the sensor in the buffer
solution and press to continue.
2 Monitoring (Buffer 1)
Live process values are displayed.
The progress of the process value
stability check is indicated on the
progress bar. The procedure moves
automatically to the next stage
upon completion.
3 Immerse in Buffer 2
The details of buffer solution 2 are
displayed.
Immerse the sensor in the buffer
solution and press to continue.
4
– – – –
Auto Buffer Cal
Immerse in Buffer 1
ABB
4.00pH
Abort Continue
5
– – – –
Auto Buffer Cal
PV 4.03 pH
SV 25.2 °C
Abort
– – – –
Auto Buffer Cal
Immerse in Buffer 2
ABB
7.00pH
Abort Continue
Monitoring (Buffer 2)
Live process values are displayed.
The progress of the process value
stability check is indicated on the
progress bar. The procedure moves
automatically to the next stage
upon completion.
Completion
Following a successful calibration
the calculated coefficients are
displayed.
Following an unsuccessful
calibration the reason for failure
is displayed.
– – – –
Auto Buffer Cal
PV 7.14 pH
SV 25.2 °C
Abort
– – – –
Auto Buffer Cal
PV 7.14 pH
SV 25.2 °C
PV Slope 100.00%
PV Offset 8.94 mV
Exit
– – – –
Auto Buffer Cal
PV 7.14 pH
SV 25.2 °C
Calibration Failed
Offset Too High
Exit