STATUS SCIENTIFIC CONTROLS
Installation, Commissioning & Routine Gas Testing
FGD4 Gas Detector
TD19/001
Issue:
5
Change Note:
1869
Page 30
10.
F
USES
A 340 mA polyfuse is located within the FGD4. It will automatically reset
when normal conditions return.
11.
S
PECIFICATION
Materials
:
Instrument Body
– injection moulded polycarbonate
Cable entries
:
1 x 20mm
Weights
:
FGD4 (excluding weather guard)
– 0.5Kg
Weather guard
– 200 grams
Sensor type
:
Electrochemical or Infrared
Input voltage
:
8 to 24 volts dc
Input power
:
5 Watts maximum
Internal fuse
:
340mA 'Nanofuse'
Analogue
output
:
4 to 20mA (10 bit resolution)
Comms output :
Communications with hand-held calibration keypad at
38400 baud (3V logic)
Measurement
range
:
Depends upon sensor type
Response time :
Typically T
90
< 40 sec, depends upon sensor type
IP rating
:
Enclosure IP68, Sensor IP65
Display /
Keypad
:
External via internal connector
Operating
temperature
:
- 20 to +60
O
C
Humidity range :
0 to 95% RH non-condensing
Operating
pressure
:
Atmospheric + or - 10%
