18
Main menu:
Allows entry into the main menu for editing the control parameters and includes
calibration parameters for the Dry Well Calibrator as described in 9.3. See controller user manual
for details.
7.2.
Calibration Mode (Normal operating mode)
7.2.1.
CDW30 Series
The CDW30 series provides above and below ambient temperature control. Once the set
point is set via the up/down arrows or from the programmed list, the controller will ramp
the calibrator temperature to the selected temperature and then control it for stability. In
this mode the LED indicators are as follows:
•
LED 1 indicates when the heater is on.
•
Solid “ON” means heat is being applied continuously, which occurs when the PV
(process value or dry well temperature) is well below the SV (set value).
•
Flashing “ON” means heat is being pulsed for regulating the temperature, which
occurs when the PV is close to or at the SV.
•
“OFF” means no heat is applied.
•
LED 2 indicates when active cooling is applied.
•
Solid “ON” means active cooling is being applied continuously, which occurs when
the PV (process value or dry well temperature) is well above the SV (set value).
•
Flashing “ON” means active cooling is being pulsed for regulating the temperature,
which occurs when the PV is close to or at the SV.
•
“OFF” means no active cooling is applied.
7.3.
Set Point Adjustment mode (SV)
To set a temporary set point:
•
Briefly press the “P” Key. The upper display will show the process value and the
lower display will show the current set value.
•
Press the
“Up Arrow” to increase or the
“Down Arrow” to decrease the set
value.
•
Briefly press the “P” Key to confirm the new value as the new set value.
•
Wait 10 seconds or press and hold the “U” key for 5 seconds and the meter will
return to normal operating mode.
