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5-4-2 Output signals
1. Signal transmission system: 4-20mA (non-insulated, discharge energy)
2. Recommended transmission cable: equivalent of CVVS
3.
Transmission distance: shorter than 1km
4.
Connected load resistance: less than 300
Ω
5. Level of signals in each condition
1.
Detection mode: 4 to 22 mA (depends on gas concentration)
2.
Gas Alarm: 4 to 22 mA (depends on gas concentration)
3.
Warm up: 2.5 mA
4.
Maintenance mode: 2.5 mA
5.
Alarm test mode: 4 to 22 mA (depends on gas concentration)
6.
Trouble alarm: 0.5 mA
7.
Point skip: 2.5 mA
6.Power discontinuity: 0 mA
The gas concentration and outputs are on the diagram below
WARNING
・
The 4-20mA is adjusted before shipping.
・
If adjustment is needed after it is installed, do not touch the instrument without any
instructions of a trained personnel. Adjustments should be done by a service staff.
