Detcon H2S RoughNECK - Manual (Page 3)

3.0 I NTERFERENCE D ATA
Detcon RoughNECK™ H2S sensors are designed to detect and monitor hydrogen sulfide gas in ambient
air in the range of 0-100 parts per million. Minimum sensitivity and scale resolution is 1 ppm. Sensor spec-
ifications reflect an operating temperature range of -40° F. to +175° F. While the sensor is capable of operat-
ing outside these temperatures, performance specifications are verified within the limit.
Interference Data
Methane
25,000 = 0
Ethane 5,000 = 0
Hexane 5,000 = 0
Propane 5,000 = 0
Butane 5,000 = 0
Carbon Monoxide 800 = 0
Carbon Dioxide 5,000 = 0
Carbon Disulfide 14 = 0
Methonol 200 = 0
Isopropanol 200 = 0
Ammonia 500 = 0
Diesel Fuel = 0
Demethyl Sulfide 4.4 = 0
Ethylene 200 = 0
Freon 12 1000 = 0
Hydrogen 1000 = 8
Methyl Mercaptan 5 = 8
Sulfur Dioxide 300 = 0
Toluene 32 = 0
Ethanol 200 = 0
4.0 S PECIFICATIONS
Method of Detection
Solid state metal oxide. Diffusion/adsorption
Electrical Classification
NEMA 4 Non-Hazardous controller; NEMA 7 sensor
Response Time
80% < 2 minutes
Clearing Time
Detcon RoughNECK™ H2S Gas Detection & Alarm System PG.3
Pre-amp
(span)
Constant
Temperature
Control
MOS
Sensor
RTD
Heater
Alarm &
Signal
Conditioning
Power In
Low
Alarm
Strobe
High
Alarm
Horn
RoughNECK ™ Block Diagram