STATUS SCIENTIFIC CONTROLS
Installation, Commissioning & Routine Gas Testing
FGD10A-M Gas Detector
TD18/032
Issue:
10
Change Note:
1869
Page 15
5.4.
Power Supply
The FGD10A-M is powered from a 8
– 24 volt dc, 5 W maximum output
supply. This may be either:-
a) An independent supply powering one or more units.
b) A supply that is an integral part of a control card within a monitoring
panel.
5.5.
Analogue Output
The analogue output provides a means of indicating to external equipment
(e.g. data loggers, remote displays, control cards) the gas levels currently
being detected by the system. The output is in the form of the industry
standard 4 to 20mA current source.
The analogue output is factory set such that 4mA represents zero gas and
20mA represents the full scale gas level of the FGD10A-M.
Figure 4
– Analogue Output
5.6.
RS485 Output
This output is designed to be compatible with a suitable controller fitted with
an RS485 serial communications port.
Note - The amplifier and
power supply may be
contained on the same
control card.
FGD10
0V
A+
0V
12-24V DC
Control
Unit
I (4-20mA)
PSU
