Description
The SEC Millennium WS hydrocarbon detector is designed to be used as an upgrade in the same applications where catalytic bead sensors have been applied. The Millennium WS 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 | Acetone, 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 |
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 | |
SEC Millennium Infrared Hydrogen Gas Detector for Acetone | |
SEC Millennium Infrared Hydrogen Gas Detector for DF 20000 | |
SEC Millennium Infrared Hydrogen Gas Detector for Green Earth |