GD1 Page 59 of 76 850-816926-EN R06
9. TECHNICAL SPECIFICATIONS
GENERAL
Detection method Near IR laser scanning
IR-Source Tunable laser diode
Laser Class 1, eye safe
Detected gas H
2
S
Range 0 - 200 ppm*m (default)
Path length 5 - 75 m
Self-test Continuous
Calibration Factory set, no field recalibration
Safety Integrity Level 2 (Functional test interval of once per year)
PERFORMANCE
Accuracy < ±8 ppm*m (<±4% of full range)
Repeatability < ±8 ppm*m (<±4% of full range)
Response time 5 sec.
OPTICS
Alignment ±0.3°
Optics Heated (Transmitter and Receiver)
Obscuration >98% to signal Beam block (2 mA)
Optional: Warning (3 mA)
>90% to signal "Early clean optics"
OUTPUT SIGNAL
Standard 4-20 mA sink or source (factory set),
max. load impedance 500 ,
HART®
Fault signals Fault 1 mA
Beam block 2 mA
Option: Warning 3 mA
Zero filter The “Zero filter” is by default set to filter any
noise/measurement below 10 % Full Scale.
ELECTRICAL
Power supply 24 V DC nominal, range 18-32 V DC
Power consumption < 15 W (RX: <5W + TX: <10W)
Cable entry M25
System fuse Power to the GD1 shall be protected by 1A fuse
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