Spectrex Xenon 700 SIL Open-Path Gas Detection System - Manual (Page 32)

SafEye TM Xenon 700S SIL Gas Detector
20 System Set Up
3.3.2.3 Zero Calibration
Zero Calibration can be enabled or disabled as follows:
 Enable – Zero calibration is performed according to background
 Disable – The Detectors are not updated due to change of background
3.3.2.4 Other Functions
Table 8: Other Functions
Function
Accessory
Relay Accessory Relay is
activated at warning level Accessory Relay is activated
at alarm level
Alarm
Latching
No latching function at
alarm relay
Alarm relay is latched.
Latching reset can be
performed by momentary
power disconnection or when
Detectors are set to alignment
mode
4-20 mA
mode
Continue reading of the
0-20mA per the gas
concentration level
(see Table 1) Discrete reading of the
0-20mA output according to
the Detector status
(see Table 2)
Beam Block
During
Alarm
Non latching of alarm
indication during blocking
mode
Alarm outputs are latched
when the Detector turns to
blocking mode from alarm
position. Latching reset can be
provided only if the Detector
turn to normal mode
3.3.2.5 Address Setup
The Detector provides up to 247 addresses that can be used in RS-485
communication link.
3.3.2.6 Heated Optic Operation
The heated optics for the Detector unit can be defined as one of the
following modes:
 OFF – Not operated
 ON – Operated continuously
 AUTO – On, per temperature change (default)
When operated per temperature change, the user can define the start
temperature below which the window will be heated between 0 to 50°C. The
Detector will stop heating the window when the temperature will be 15°C
above the defined temperature.
This feature relates to the Detector only.