SafEye
™
™
Series 200 IR Gas Detector - User’s and Maintenance Manual
SPETCREX INC.
Doc. No. TM792100, Rev. B, Oct 1997
- 15 -
2.
Four Gas types can be selected for maximum compatibility to Gas spectral
properties. The selection of the appropriate type is defined by pre-setting of
SW1-3 and SW1-4 according to the following table:
Table 1-9. Gas Type Calibration Setup
bit #0
position
(SW1-3)
bit #1
position
(SW1-4)
Detected Gas type
Gas type as defined in
Section 1.4.5
off
off
Methane
Gas 1
on
off
Mixture
Gas 2
off
on
Propane
Gas 3
on
on
Mixture
Gas 4
Address Selection Switch
The Address selection Switch provides up to 64 different addresses for the detector
upon a network installation. Each detector can be recognized at its specific address in
RS485 network. The address should be determined by a pre-setting of SW2-1 to
SW2-6 switches.
SW2 also provides the user to select configuration of the 4-20mA output between
either Source type or Sink type according the requirements of the interfaced
controller. This can be done upon pre-setting of SW2-7 to SW2-8.
Attention !
SW2-7 and SW2-8 should be always at on.
Table 1-10 describes SW2 DIP Switches position and the required function for setting
the detector. according to the necessary configuration
Table 1-10. SW2 DIP Switches Configuration
Switch
No.
Switch Definition
off position
on position
Default
setting
1.
Address bit 0 (LSB)
0
1
off
2.
Address bit 1
0
1
off
3.
Address bit 2
0
1
off
4.
Address bit 3
0
1
off
5.
Address bit 4
0
1
off
6.
Address bit 5 (MSB)
0
1
off
7.
4-20mA direction
setting (1)
N/A
4-20mA output at
source position
on
8.
4-20mA direction
setting (2)
N/A
4-20mA output at
source position
on
