SEC Millennium Infrared Gas Detector for Acetylene

The SEC Millennium ACE (acetylene) hydrocarbon gas detectors are designed to be used as an upgrade in the same applications where catalytic bead sensors have been applied. The Millennium ACE is a complete self contained optical hydrocarbon gas detector. The sensing and reference elements are self-compensating for optical integrity and other signal inhibitors. The industry standard 4-20 mA analog output provides remote alarm, fault and calibration signals.

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

Features

  • Reliable 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
  • Fast response time
  • Rugged stainless steel construction
  • Smart calibration
  • Patented 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 3100 transmitter for network applications
  • RS-485 communication link
  • Digital display optional

Specifications

Detectable Gases Acetylene
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
Weight 5 pounds

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

Description
Catalog No.
SEC Millennium Infrared Hydrogen Gas Detector for Acetylene
49000000100HL12

Downloads

Millennium Hydrocarbon Acetylene literature

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