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SEC Millennium Infrared
Hydrocarbon Gas Detector
Infrared Transmitter
 The SEC Millennium hydrocarbon detector is a single source dual wavelength instrument. The sensing and reference elements are self compensating for optical integrity and other signal inhibitors. The industry standard 4-20 mA analog output provides complete remote alarm, fault and calibration signals.

Features

  • Infrared sensing technology
  • Virtually maintenance free
  • Low cost of ownership, over five years operating life
  • Immune to poisoning and etching
  • Designed for harsh environments
  • Explosion proof
  • Compact, lightweight and fast response time
  • Smart calibration
  • Self compensating optical bench and no moving parts
  • Heated optical chamber
  • Low power consumption
  • Operates in constant hydrocarbon background and anaerobic atmosphere
  • Fault indications for all failure states
  • Routine calibrations are not required
  • 4-20 mA output
  • 0 to 100% LFL detection range
  • Can be coupled with SEC transmitter for network applications
  • RS-485 communication link
  • Digital display optional

Applications

  • Refineries
  • Drilling and production platforms
  • Fuel loading facilities
  • Oil well logging
  • LNG/LPG processing and storage facilities
  • Gas turbines
  • Chemical plants
  • Compressor stations
  • Wastewater treatment facilities
  • Transportation facilities

Specifications

Detectable Gases Methane, propane, n-butane, octane, ethylene, ethanol, methanol, ethylene oxide, propylene, diesel, isopropyl alcohol, DF 2000, green earth
Range 0-100% LFL
Accuracy +/- 3% to 50% LFL or +/- 5% 51 to 100% LFL
Detection Method Diffusion, optional sample draw, requires a minimum of 1 LPM flow rate
Power Consumption 5 watts
Analog Output 4-20 mA, max 1000 Ohm load at 24 VDC supply voltage
Response Time T50 < 5 seconds, T90 < 10 seconds
Operating Temperature -40 to 70°C, 0-99% RH, non condensing
Operating Range 18 to 32 VDC measured at detector head
Max Current Draw At 24 VDC: Average 210 mA, Peak 400 mA
Construction 316 stainless steel
Classification Class I, Div I, Groups B, C, D
Approvals C 22.2 No. 152-M1984 (R1997)
Installation Category Cat I, Pollution Degree 2

Unit Status Chart

Current
Output
Status
4-20
mA
 Normal measuring mode
0.0
mA
 Unit fault
0.2
mA
 Reference channel fault
0.4
mA
 Analytical channel fault
0.8
mA
 Unit warm up
1.0
mA
 Optics fault
1.2
mA
 Zero drift fault
1.6
mA
 Calibration fault
2.0
mA
 Unit spanning
2.2
mA
 Unit zeroing
4.0
mA
 Zero gas level
5.6
mA
 10% of full scale
8.0
mA
 25% of full scale
12
mA
 50% of full scale
16
mA
 75% of full scale
20
mA
 100% of full scale
20.1-23
mA
 Over range (>100%)

Ordering Information

For pricing, please call AFC International at 1-800-952-3293, 219-987-6825 or fax 219-987-6826 or email sales@afcintl.com.

Download a copy of the Millennium Hydrocarbon literature.
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AFC International, Inc.
PO Box 894, DeMotte, IN 46310
715 SW Almond St, Ste C, DeMotte, IN 46310
800-952-3293 219-987-6825 Fax 219-987-6826
eMail: sales@afcintl.com

Last Revised: 10/5/07