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Filter Failure Alarm
The Goyen | Mecair FFA provides you dependable and pragmatic filter monitoring through an easy setup external unit and clear, simple and language independent full-color LCD display. It features two alarm relays and a 4-20 mA output and can work in ATEX rated environments (II 3GD) and flu gas temperatures from -20°C to +240°C (-4°F to +464°F).
The FFA utilizes a unique probe electrification technology which provides much better performances than conventional DC triboelectric systems as well as alternative AC systems. This allows extending the velocity range over which the system has no cross sensitivity to changing velocity. Thanks to that technology, the FFA is also unaffected by build-up of particulate on the sensing rod, thus eliminating signal drift concerns.
A charge signature is induced by particulates in the airstream interacting with the sensing rod. The FFA extracts a specific frequency band from the induced AC current signature and filter out the DC current generated by direct particle collisions. In order to reject signals falling outside a pre-defined frequency range, the so resulting signal is electronically filtered. Thanks to that, Goyen | Mecair filter failure alarms are less susceptible to changes in particle velocity and are not affected by any particulate contamination on the sensing rod.
Also this technology, not relying on particles colliding with the probe, is able to measure a more representative area of the stack and eliminate the need of long sensor probe rods.
Thanks to the digital averaging of readings in combination with the alarm delay feature, by properly setting the delay period, the system will exclude short term signal increases associated with pulse cleaning of filters. This translates into a much lower likelihood of having false alarms.
OPERATIONAL RANGE
- Suitable for a wide range of dust collectors designs and configurations
- Dust level response: <1mg/m3 to 500mg/ m3 (<0.028 mg/ft3 to 14 mg/ft3)
- Flue gas velocity from 4m/sec
- Flue gas temperature up to 240°C (464°F)
- Ambient temperature from -20°C to +50°C (-4°F to +122°F)
- Duct sizes from 0.5m
- Hazardous area ATEX II 3GD
- US-EPA MACT compliant
DOWNLOAD CATALOG (ดาวน์โหลดแคตตาล็อก)
PROCESS AND APPLICATION CONDITIONS
Stack temperature range B | –20 to 240°C (–4 to 465°F) |
SENSOR – KEY DATA | |
Flue gas velocity | 4 m/s |
Dust level response | <1 to 500 mg/m³ (dependent upon application) |
Application conditions | Suitable for measurement in non-condensing šue gases. |
Hazardo us zone classification | ATEX Zones 2 (Gas) and 22 (Dust) |
ENVIRONMENTAL INFORMATION | |
Altitude category | max. 2,000 m (6,500 ft.) |
SENSOR SPECIFICATION | |
FILTER FAILURE ALARM MONITOR | |
Sensor variant | Standard sensor: 0–240°C (up to 465°F) |
Probe rod material | 316 Stainless Steel, PTFE (insulator) |
Weight | 900g (2 lb), excl. rod |
Cable entries | 2× M16 cable glands (one blanked) |
ENCLOSURE | |
Ambient temperature range B | 20 to +50°C (–4 to 130°F) |
Protection rating | IP65 |
Material | Die-cast aluminium LM6M (epoxy coated) |
POWER REQUIREMENTS | |
Power supply voltage | 24 V DC (from the control unit) |
สอบถามข้อมูลเพิ่มเติม ติดต่อเรา :
02-384-6060 (อัตโนมัติ) [email protected] บริษัท ฟลูเทค จำกัด Flu-tech @flutech.co.th
