Walchem W600 Series, Instruction Manual, Page: 40 / 88

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5.0 OPERATION using the touchscreen
These units control continuously while power is applied. Programming is accomplished either via the
touchscreen or the optional Ethernet connection. See section 6.0 for Ethernet instructions.
To view the readings of each sensor, or whatever user-defined list of parameters that has been set,
touch the Home icon if not already there. The menus for each of these parameters may be accessed
directly by touching the parameter.
Keep in mind that even while browsing through menus, the unit is still controlling.
Touch the Main Menu icon from the home page to access all settings. The menu structure is
grouped by alarms, inputs and outputs. Under the Configuration menu will be general settings such
as the clock, the language, etc. that do not have an input or output associated with it. Each input has
its own menu for calibration and unit selection as needed. Each output has its own setup menu
including set points, timer values and operating modes as needed.
5.1 Alarms Menu
Touch the Alarms icon to view a list of active alarms. If there are more than six active alarms, the
Page Down icon will be shown; touch this icon to bring up the next page of alarms.
Touch the Main Menu icon to go back to the previous screen.
5.2 Inputs Menu
Touch the Inputs icon to view a list of all sensor and digital inputs. The Page Down icon pages down
the list of inputs, the Page Up icon pages up the list of inputs, the Main Menu icon brings back the
previous screen.
Touch the input to access that input’s details, calibration (if applicable) and settings.
Sensor Input Details
The details for any type of sensor input include the current value read, alarms, the raw (uncalibrated)
signal, the sensor type, and the calibration gain and offset. If the sensor has automatic temperature
compensation, then the sensor’s temperature value and alarms, the temperature resistance value read,
and the type of temperature element required are also displayed under a separate sensor input menu.
Calibration
Touch the Calibration icon to calibrate the sensor. Select the calibration to perform: One Point
Process, One Point Buffer or Two Point Buffer Calibration. Not all calibration options are available
for all types of sensor.
One Point Process Calibration
New Value
Enter the actual value of the process as determined by another meter or laboratory analysis
and touch Confirm.