STATUS SCIENTIFIC CONTROLS
FGD3 Infrared Gas Detector Heads
TD06/024
Issue:
7
Change Note:
1904
Page 32
8 Specification
Size
122 x 142 x 75mm nominal
Sensor Type
NDIR Infrared, temperature compensated, dual
element
Sensor MTBF
10 years
Operating voltage
8.0
– 28V DC
(for 4-20mA Signal)
5.8
– 7.5V DC
(for Sensor supply)
Operating Temperature
-20
C to +60
C (-4
F to 140
F)
Storage Temperature
-20
C to +60
C (-4
F to 140
F)
Humidity range
0-95% RH non-condensing
Operating pressure
Ambient ± 10%
Cable loop resistance
Signal
Sensor
480 Ohms at nominal 20v
41 Ohms at 8.0V DC
Degree of protection
IP65
8.1 Hydrocarbon
Measurement range
0-100% LEL
Response Time
T
90
<30 sec (methane, 50% LEL)
Measurement Resolution
1% LEL
Note:
100% LEL is based on the following;
Gas
%v/v
Methane
5.0
Propane
2.0
Pentane
1.4
8.2 Carbon Dioxide low range
Measurement range
0-5% Vol.
Response Time
T
90
<40 sec
Measurement Resolution
0.1% Vol.
8.3 Carbon Dioxide high range
Measurement range
0-100% Vol.
Response Time
T
90
<60 sec
Measurement Resolution
1% Vol.
Summary of Contents for FGD 3 Series
Page 2: ......
