Operation

_{Source: Intuition-6 Instruction Manual Rev. H, Pages: 36–64} The Intuition-6 features a 5” color touchscreen for all configuration and monitoring functions.

Front Panel

Component	Function
Power Switch	On/Off rocker switch (circuits remain live when off)
Touchscreen Display	800 x 480 pixel capacitive touchscreen
System Status LED	Green = running normally
Alarm LED	Red = active alarm
USB Port	Firmware upgrades, config backup, datalog export
Padlock Loop	Security lockout for enclosure door

Startup

Apply power

Turn on the power switch. The display will show the Walchem logo during initialization.

Initial configuration

On first startup, configure:

Date and time
Language preference
Input and output assignments

Verify sensors

Check that all connected sensors display valid readings on the home screen.

Program outputs

Configure each relay for the desired control mode before placing in Auto.

Shutdown

For planned shutdowns:

Disable outputs

Place all relay outputs in Off mode via the HOA menu

Wait for processes

Wait for any active processes to complete (biocide timers, bleed cycles)

Power off

Turn off the power switch on the front panel

Disconnect power

Disconnect power at the source if servicing the controller

The power switch does not disconnect all internal circuits. Always disconnect external power before opening the enclosure.

Home Screen

The home screen displays a customizable summary of inputs and outputs. Touch any displayed value to access its detail screen.

Customizing the Home Screen

Press and hold anywhere on the home screen for 3 seconds
Use the Edit icons to:
- Split cells to show more items
- Merge cells to show fewer, larger items
- Move items up or down
- Delete items from display
Touch the checkmark to save changes

Screen Icons

Icon	Function
Calibration (target)	Access sensor calibration
Graph (line chart)	View sensor trend graph
Edit (pencil)	Modify settings
Info (i in circle)	Return to view mode
Close (X)	Close menu, return to previous
Confirm (checkmark)	Save changes
Filter (funnel)	Limit displayed choices
Delete (backspace arrow)	Erase character entry

Displays all active and recent alarms. Touch any alarm for details.Alarm Types:

Sensor alarms (Hi/Hi, Hi, Lo, Lo/Lo)
Output timeout alarms
Flow verify alarms
Communication errors
Calibration reminders

Hand-Off-Auto (HOA) Control

Each output can be set to one of three states:

State	Description
Hand	Output forced ON regardless of control mode
Off	Output forced OFF regardless of control mode
Auto	Output controlled by programmed algorithm

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.

Sensor Calibration

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:

Take grab sample

Take a grab sample while viewing the live reading

Measure in lab

Measure sample conductivity with a lab meter

Enter value

Enter the lab value in the controller

Confirm

Touch Confirm to save calibration

One-Point Buffer Calibration:

Prepare standard

Place sensor in known conductivity solution

Enter value

Enter solution value

Stabilize

Wait for reading to stabilize

Confirm

Touch Confirm to save calibration

Two-Point Buffer Calibration (Recommended):

First buffer

Rinse sensor and place in first buffer (e.g., pH 7)

Confirm first point

Wait for stabilization, then touch Confirm

Second buffer

Rinse sensor and place in second buffer (e.g., pH 4 or 10)

Confirm second point

Wait for stabilization

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.

Sensor Settings

Each sensor type has configurable parameters:

Common Settings

Setting	Description
Alarms	Lo/Lo, Lo, Hi, Hi/Hi thresholds
Deadband	Difference between alarm on and off points
Smoothing Factor	0-90%, damping for noisy signals
Cal Required Alarm	Days between calibration reminders
Name	Custom identifier for the input

Conductivity-Specific

Setting	Description
Cell Constant	Match to sensor (0.01, 0.1, 1.0, 10.0)
Temp Compensation	NaCl standard or Linear %/°C
Temp Comp Factor	Linear coefficient (typically 2%/°C)
Default Temp	Temperature used if sensor fails
Cable Length	For compensation of long cable runs
Units	µS/cm, mS/cm, mS/m, S/m, or ppm

pH-Specific

Setting	Description
Buffers	Manual, JIS/NIST, DIN, or Traceable 4/7/10
Electrode	Glass (standard) or Antimony
Default Temp	Temperature if sensor fails

4-20 mA Transmitter

Setting	Description
Transmitter Type	2-wire loop, 2-wire powered, 3-wire, 4-wire
4 mA Value	Engineering units at 4 mA
20 mA Value	Engineering units at 20 mA
Units	Custom units text

Digital Input Configuration

Configure each digital input type using the settings below.

DI State (Flow Switch/Interlock)

Setting	Description
Open Message	Text shown when switch open
Closed Message	Text shown when switch closed
Interlock	Which state triggers interlock
Alarm	Generate alarm on Open, Closed, or Never

Flow Meter (Contactor)

Setting	Description
Volume/Contact	Volume per switch closure
Flow Units	Gallons, Liters, m³, MG
Totalizer Alarm	Alarm when total exceeds value
Scheduled Reset	Daily, Monthly, Annually, or Never

Flow Meter (Paddlewheel)

Setting	Description
K Factor	Pulses per unit volume
Flow/Rate Units	Volume and time base
Alarms	Low and High flow rate limits

Feed Monitor

Setting	Description
Volume/Contact	Volume per pulse (from pump specs)
Totalizer Alarm	Maximum allowed total
Flow Alarm Delay	Time before loss-of-flow alarm
Flow Alarm Clear	Pulses required to clear alarm
Reprime Time	Pump on-time when loss detected
Linked Output	Which relay controls this pump

Ethernet Configuration

Use these settings to connect the controller to the network and enable web/email features.

Network Setup

Go to Configuration → Ethernet Settings
Select DHCP or enter fixed IP address
Configure subnet mask and gateway
Test connection

Web Interface Access

Connect controller to network
Enter IP address in web browser
Log in with controller password
Access all configuration via web pages

Email Configuration

Configure up to 8 email addresses for:

Alarm notifications
Periodic datalog reports
Calibration reminders

Email requires SMTP server configuration. Contact your IT department for the correct settings.

USB Functions

Insert a USB flash drive to access:

Software Upgrade

Download latest firmware from Walchem website
Copy to USB drive root directory
Insert drive, navigate to File Utilities
Select Software Upgrade

Config File Backup/Restore

Export configuration to USB
Import to another controller for quick setup
Useful for multi-controller installations

Datalog Export

Select date range
Export to CSV format
Open in Excel or similar spreadsheet

Sources

Intuition-6 Instruction Manual Rev. H

Pages 36–64 • February 2024

Get Started

Product Support

Operation

Operation

Front Panel

Startup

Shutdown

Home Screen

Customizing the Home Screen

Screen Icons

Menu Structure

Hand-Off-Auto (HOA) Control

Sensor Calibration

Sensor Settings

Common Settings

Conductivity-Specific

pH-Specific

4-20 mA Transmitter

Digital Input Configuration

DI State (Flow Switch/Interlock)

Flow Meter (Contactor)

Flow Meter (Paddlewheel)

Feed Monitor

Ethernet Configuration

Network Setup

Web Interface Access

Email Configuration

USB Functions

Software Upgrade

Config File Backup/Restore

Datalog Export

Sources

Intuition-6 Instruction Manual Rev. H

​Operation

​Front Panel

​Startup

​Shutdown

​Home Screen

​Customizing the Home Screen

​Screen Icons

​Menu Structure

​Hand-Off-Auto (HOA) Control

​Sensor Calibration

​Sensor Settings

​Common Settings

​Conductivity-Specific

​pH-Specific

​4-20 mA Transmitter

​Digital Input Configuration

​DI State (Flow Switch/Interlock)

​Flow Meter (Contactor)

​Flow Meter (Paddlewheel)

​Feed Monitor

​Ethernet Configuration

​Network Setup

​Web Interface Access

​Email Configuration

​USB Functions

​Software Upgrade

​Config File Backup/Restore

​Datalog Export

​Sources

Intuition-6 Instruction Manual Rev. H

Operation

Front Panel

Startup

Shutdown

Home Screen

Customizing the Home Screen

Screen Icons

Menu Structure

Hand-Off-Auto (HOA) Control

Sensor Calibration

Sensor Settings

Common Settings

Conductivity-Specific

pH-Specific

4-20 mA Transmitter

Digital Input Configuration

DI State (Flow Switch/Interlock)

Flow Meter (Contactor)

Flow Meter (Paddlewheel)

Feed Monitor

Ethernet Configuration

Network Setup

Web Interface Access

Email Configuration

USB Functions

Software Upgrade

Config File Backup/Restore

Datalog Export

Sources