Specification | Carthago International Solutions

HomeSpecifications

Gas sampling method	Gas Diffusion
Measurement range	0 to 100% LEL Hydrocarbons 0 to 20,000 ppm (2 vol.%)) Carbon Dioxide
Operating voltage range	10 to 30 VDC
Current output (linear)	4 - 20 mA (HART & MODBUS pending)
Power consumption	2 watt @ 12 V DC
Warm-up time	60 seconds
Repeatability	1% full scale
Long term stability	< 1% full scale/year
Operating temperature	-30 to 65 °C (-22 to 150 °F)
Operating humidity	5 to 95% RH (non condensing)
Housing & Weight	Aluminum, 4 lbs (1.81 Kg)
Conduit/cable entry	¾ inch NPT
Dimensions	Length: 215 mm (8.46”) Width: 126 mm (4.96”) Height: 95 mm (3.74”)
Ingress protection	NEMA4, IP65
Certification	Class I Division 1 Groups ABCD (UL Class I Division 1, ATEX)

Specifications	Catalytic	Infrared	OptoAcoustic
Operation Principle	Oxidation	Absorption	Acoustic Pressure
Signal Drift (Full Scale)	<5%/year	<5%/year	<0.1%/year
Accuracy/Repeatability (Full Scale)	± 5% LEL	± 5% LEL	< ± 1% LEL
Sensitivity Loss (Gas Consumption)	High	Immune	Immune (Zero Drift)
Temperature & Humidity Influence	Low	High	Immune (Zero Drift)
Vibration/Moisture/Dust/Wind Influence	Low	High	Immune (Zero Drift)
Measurement REDUNDANCY (Backup)	No	No	YES
Built-in Plausibility & Self-Diagnostics	No	Yes	YES
Linearized/Calibrated (Zero & Span Levels)	No	No	YES
Frequency of Faults & False alarms	Low	High	None (self-diagnostics)
Sensor Lifetime (Sensor Replacement Cycle)	< 3 years	< 7 years	15 years
Operation & Maintenance
Recommended Maintenance Cycle	4x per year	4x per year	1x per year
Sensor Replacement Cycle	3 years	7 years	None
Maintenance Cost Ratio	88%	74%	38%