Spectrex Series 300 Open-Path Gas Detection System - Manual (Page 23)

Spectrex Inc. - SafEye TM 300 Gas Detector Manual – TM 794100, Rev. D, May 2004
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3.9 System Setup
3.9.1 Detector Setting
The detector consists of the following DIPswitches, which enable the user to
adapt the detector operation to specific application:
SW1
Function Selection Switch. Contains. 8 DIPswitches. Used for Calibration
of different gas selection, response time control and Relays response
configuration (see table 7)
SW2 Address Selection Switch. Contains 8 DIPswitches. Used for Detector’s
address setting and 4-20mA output configuration setting (see table 9)
SW3 Alarm Options Selection Switch. Contains 4 DIPswitches. Used for
Detector’s Alarm Latching configuration and 4 -20mA level reading
configuration (see table 10)
Function Selection Switch:
Table 7 describes SW1 DIPswitches position and the required function for setting
the detector according to the necessary configuration
Table 7. SW1 DIPswitches Configuration
Switch
No.
Off position On position Default
setting
1 Not Used on
2 Not Used off
3 Gas type control bit 0 at “0”
(see note 1 below) Gas type control bit 0 at “1”
(see note 1 below) on
4 Gas type control bit 1 at “0”
(see note1 below) Gas type control bit 1 at “1”
(see note 1 below) off
5 Full scale sensitivity is 0-5
LEL.m (see note 2 below) Full scale sensitivity is 0-2
LEL.m (see note 2 below) off
6 Zero calibration is
performed according to
background Gas level detection
performed without
background Zero calibration off
7 Accessory Relay is
activated at Warning level Accessory Relay is activated
at Alarm level (with the
Alarm Relay) off
8 Accessory Relay is
activated according to SW1-
7 position Accessory Relay is Activated
at Power on continuously
(used as End of Line) off