Optidew 501 Transmitter Without Display; Optics Calibration - Michell Instruments Optidew User Manual

3.3. Optidew 501 Transmitter without display

The Optidew 501 can also be ordered as a blind transmitter without display. This variant instead
comes with a single multi-function button with integrated colored LED status indicator.
The indicator changes color and pulse rate depending on the instrument status.
Meaning
Initialisation
DCC
DCC Plus
Optics balance
Searching for dew point
Searching for dew point - Optics
contaminated
Optics contaminated & Process alarm off
Optics contaminated & Process alarm on
Measuring
Measuring & Process alarm on
MaxCool
Standby
Standby – Optics contaminated
System Fault Red
Pressing the button has two different effects, depending on the mode that the instrument is in:
In DCC or DCC Plus mode – pressing the button returns to standby
In all other modes - pressing the button initiates manual DCC

3.3.1. Optics Calibration

After power is applied the LED indicator on the front of the instrument will turn white for the first
5 seconds. Pressing the button during this phase will initiate an optics calibration. The indicator
will flash indicating the button-press has been registered.
Michell Instruments
Optidew User's Manual
LED Color
White
Blue
Flashing Blue (Fast)
Flashing Blue
Flashing Green
Flashing Magenta
Magenta
Flashing Red/Magenta
Green
Flashing Red
Blue
Flashing Yellow
Flashing Yellow/Magenta
Red
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