Net Safety Monitoring SC311 Specifications

SC311 Infrared Combustible Gas Sensor

FGD-PDS-SC311-Infrared-Combustible-Gas-Sensor

Product Data Sheet

SC311 Infrared Combustible Gas Sensors

Millennium II Series Sensors

The SC311 delivers the latest technology
advancements in infrared sensing of flammable
gases in a rugged package designed for the most
extreme industrial environments. Hydrocarbon
gas LEL detection is fast, reliable and highly
accurate with only periodic bump testing
recommended and a simple annual calibration
sequence. A full 5 year warranty is included with
a typical sensor life of 8–10 years.

July 2016

 Lowest power consumption available
 Long range (+2,000 ft.) sensor separation
 Industry leading 5 year sensor warranty
 Field selectable gas curves available
 Immune to poisoning - standard gases detected

include methane, propane, butane, and ethylene

Single or Dual Channel Transmitter
Available

There’s no longer the need to purchase multiple gas speci c

detectors. You have the option to utilize 1 or 2 toxic and/or
combustible gas sensors on a single Millennium II transmitter
and easily mix and match any of our sensor technologies.

Sensor Designed for Durability
& Performance

High resolution, dual-beam optics are employed in the sensor

design which eliminates refl ective surfaces preventing fouling,

fogging or misalignment. Not only does this provide enhanced
overall performance but it also means low power consumption
which equals cost savings and more reliable coverage.

ST3 Sensors shown with JB-MPD-A/S.

 Very fast response and highly accurate
 Designed to perform in the most extreme

industrial environments

Failsafe Operation
& Advanced Diagnostics

Continuous self-check for several performance parameters as
well as environmental compensation for temperature, pressure
and humidity maintains a high level of sensor performance and
reliability.

SC311 Infrared Combustible Gas Sensor

Specifications

Table 1 - SC311 Infrared Combustible Gas Sensor

Hydrocarbon Combustible Gases [% LEL] Infrared

P/N: SC311(A/S)-100-ASSY

Performance

Response Time T50 ≤ 4.3 s

T60 ≤ 7 s
T90 ≤ 11 s

Accuracy ±5 % LEL

0—100 % LEL

Detection Range

Zero Drift < 5 % full scale per year

Repeatability ±2 % LEL full scale

Electromagnetic Compatibility (EMC) IEC 61000-4-3

Environmental

Temperature -40 °F to +167 °F (-40 °C to +75 °C)

Relative Humidity 0–95 % RH non condensing

Ingress Protection (IP) Rating IP64

Enclosure

Enclosure Material Aluminum (AL6061) or stainless steel (SS316)

Certifications North American

Gases Detected*: Methane, Propane, n-Butane, Iso-Pentane, n-Pentane, Ethane,
Iso-Butane, Ethylene, Hexane
(Field Selectable Curves) *other gases available - contact factory

Class I, Division 1, Groups BCD T5
Class I, Zone 1, AEx/Ex d IIB +H2 T5

-40 °C ≤Ta ≤+75 °C

IECEx
Ex d IIB+H2 T5 Gb

IECEx FMG 12.0007X

INMETRO

Ex d IIB+H2 T4 Gb IP66/67

July 2016

Sensor Separation Up to 2,000 feet/600 meters (18 AWG cabling)

Transmitter Required Millennium II Series (M21, M22, M2B)

Warranty Five years

2 EmersonProcess.com/FlameGasDetection