Source: Intuition-6 Instruction Manual Rev. H, Pages: 36–64The Intuition-6 features a 5” color touchscreen for all configuration and monitoring functions.
Hand Time Limit can be configured to automatically return an output from Hand to its previous state after a set time—prevents forgetting a pump in manual mode.
Calibration maintains measurement accuracy. Access calibration from the Input menu by touching the calibration icon.
Conductivity
pH
ORP
Disinfection
Analog 4-20mA
One-Point Process Calibration:
1
Take grab sample
Take a grab sample while viewing the live reading
2
Measure in lab
Measure sample conductivity with a lab meter
3
Enter value
Enter the lab value in the controller
4
Confirm
Touch Confirm to save calibration
One-Point Buffer Calibration:
1
Prepare standard
Place sensor in known conductivity solution
2
Enter value
Enter solution value
3
Stabilize
Wait for reading to stabilize
4
Confirm
Touch Confirm to save calibration
Two-Point Buffer Calibration (Recommended):
1
First buffer
Rinse sensor and place in first buffer (e.g., pH 7)
2
Confirm first point
Wait for stabilization, then touch Confirm
3
Second buffer
Rinse sensor and place in second buffer (e.g., pH 4 or 10)
4
Confirm second point
Wait for stabilization
5
Review and save
Review slope and offset values, then Confirm to save
Acceptable pH Sensor Values:
Parameter
Good
Marginal
Replace
Slope
54-62 mV/pH
48-54 mV/pH
<48 mV/pH
Offset
±30 mV
±50 mV
>±50 mV
Ideal slope is 59.16 mV/pH at 25°C. Declining slope indicates aging electrode.
One-Point Calibration:
1
Prepare standard
Place sensor in ORP reference solution (e.g., 225 mV)
2
Enter value
Enter solution value
3
Stabilize
Wait for stabilization
4
Confirm
Touch Confirm to save
ORP calibration is typically only needed to verify sensor function. Many applications use uncalibrated ORP readings since relative changes matter more than absolute values.
Process Calibration:
1
Take sample
Take grab sample during stable conditions
2
Lab test
Measure free chlorine with DPD test kit
3
Enter value
Enter measured value in controller
4
Confirm
Touch Confirm to save
Zero Calibration:
1
Prepare zero solution
Place sensor in chlorine-free water
2
Set zero
Set value to 0
3
Confirm
Touch Confirm to save
Two-Point Calibration (Recommended):
1
Set low point
Set transmitter to low point (e.g., 4 mA)
2
Confirm low
Enter value and touch Confirm
3
Set high point
Set transmitter to high point (e.g., 20 mA)
4
Confirm high
Enter value and touch Confirm
One-Point Calibration:
For minor offset corrections, set transmitter to any known mA value and enter that value in the controller.
