Spectrex SafEye Xenon 700S, User Manual

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Operational Modes
30 SafEye
TM
Xenon 700S Gas Detector User Guide
3.1.2 Maintenance Call Mode (3mA Output)
This mode indicates a low signal or low signal ratio that may be caused by a
dirty window, misalignment, poor source, or that 1 of the detector’s
parameters is at the “limit” value.
The detector continues to operate, reading any gas present, but provides a
(3mA) pre-warning signal that a maintenance procedure is required.
3.1.3 Fault Mode
In the fault mode, there are 3 fault types:
 Fault 1 (2mA output)
This is due to blockage, poor alignment, very low signal, partial
obscuration, or full beam block. Detection is no longer possible. The
detector’s proper operation can be restored (auto reset) during operation
if the condition causing the problem is removed or resolved. This is a
delay of 60sec after the fault before switching to this mode. This delay is
important to eliminate momentary obscuration due to passing through
the beam.
 Low Voltage Fault (0mA output)
Detection is disabled due to low voltage being supplied to the detector.
The detector returns to proper operation only when proper voltage level
restored.
 Fault 2 (0mA output)
Detection is disabled due to electrical/software operational failure or
central device (memory, processor) fault. A fault of this type causes the
detector to cease operation.
3.1.4 Zero Calibration Mode (1mA Output)
This mode calibrates the base level, from which gas is detected, to zero.
It should only be performed when following criteria are met:
 No combustible gases are present
 A clear path exists between the flash source and detector
 Clear weather conditions
Zero calibration must be done after installation, re-alignment, or window
cleaning, using the handheld unit or host software on a PC.