Spectrex Series 200 Open-Path Gas Detection System - Manual (Page 27)

Spectrex Inc. - SafEye TM 200 Gas Detector Manual – TM 792100, Rev. D, May 2004
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Table 11 describes SW3 DIPswitches position and the required function for
setting the detector according to the necessary configuration
Table 11. SW3 DIPswitches Configuration
Switch
No.
Off position On position Default
setting
1 Non latching Alarm
Relay Alarm Relay latches. Latching reset
can be provided by momentarily power
disconnection or when the detector is
set to alignment mode. off
2 Continuous reading
of the 4-20mA
output reading Discrete Reading of the 4-20mA output
according to the detector status (see
table 5). off
3 Non-latching Alarm
indications during
Blocking Mode Alarm indications are latched when the
detector turns to Blocking Mode from
Alarm position. Latching reset can be
provided only if the detector turns to
Normal Mode. off
4 Normal Position
(open) Communication line termination for
impedance matching off
3.9.2 Flash Source Setting
The Flash Source contains one DIPswitch, which enables the user to adapt the
Flash Source rate to a specific application:
The DIPswitch SW1 contains four switches which selects the rate as multiple of a
base rate. Same flash rate should be set also at the detector.
Table 12 defines the rate according to the switches selection.
Table 12. Flash Source rate setting
Switches position off = 0 ; on = 1 Flash Rate
(in seconds) SW1-1 SW1-2 SW1-3 SW1-4
Default
Setting
0.5 on off on off
1 off on on off +
2 on on on off
4 off off off on