Updated:2023-10-27
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Detection of Hydrocarbon, Hydrogen or Toxic Gases
Features
Certified Ex d IIC to IECEx and ATEX
FGD10A is fitted with 3 control relays
Menu operates via a magnetic pen eliminating the need to open the flameproof enclosure
Industry standard 4 to 20mA output (3-wire)
FGD10A-M has OLED display and RS 485 Modbus communications
Flameproof Fixed Gas Detectors are used in Potentially Explosive Atmospheres where, due to the nature of the environment or the industrial process taking place, there is the risk of an incendive spark from electrical apparatus causing an explosion to occur and the organisation responsible for the safety of the area requires that electrical equipment be enclosed within a flameproof enclosure (also known as an FLP, Ex d or explosion-proof enclosure).
Examples are the oil, gas and chemicals industries.
They can be supplied either in cast aluminium (standard type) or grade 316 stainless steel (suffix '-SS').
The detectors are fitted with a single sensor that can be an Infrared Sensor, for the detection of Hydrocarbon gases or Carbon Dioxide, a 'Pellistor' Catalytic Sensor for detection of both Hydrocarbon gases and Hydrogen or an Electrochemical Sensor for the detection of specific toxic gases and oxygen.
Specifications
Material |
Instrument Body – Aluminium Pressure Die Casting or Stainless Steel 316 Sensor Insert – Stainless Steel Grade 316 IR Sensor Housing – Stainless Steel Grade 303 (Grade 316 available) Magnetic Pen – Stainless Steel Grade 316 Optional Weatherguard – Stainless Steel Grade 304 & Nylon 66 |
Cable entry | 2 x 20mm or ½” NPT or ¾” NPT |
Weights | FGD10A Oxygen, Toxic, Pellistor (excluding weatherguard) – 1.75Kg FGD10A Infrared 2Kg Magnetic Pen – 60 grams Weatherguard – 225 grams |
Gas Types |
Oxygen Toxic Flammable Note: Infrared sensors have no response to Hydrogen |
Input voltage | 12 to 24 volts dc |
Input power | 5 Watts maximum |
Internal fuse | 1 Amp antisurge 'Nanofuse' |
Relay contact rating | 3 Amps, 300 Volts ac |
Analogue output | 4 to 20mA (10 bit resolution) |
RS232 output | Communications with PC at 19200 baud |
Sensor types | NDIR Infrared, Electrochemical or Pellistor |
Measurement range | Dependent upon sensor type |
Response time | Sensor response times vary according to the sensor type. |
Measurement resolution |
Flammable gases - 1% LEL or 1% volume Toxic gases - 0.1ppm for FSD < 50ppm, 1ppm for FSD> 50ppm. Oxygen - 0.1% volume. |
IP rating | Enclosure IP68, Sensor IP65 |
Display | 4 Digit, 7 segment liquid crystal |
Keypad | 4-Button magnetically operated |
Software | Software configuration provided via LCD display |
Operating temperature | Dependent upon sensor but typically - 20 to +60℃ |
Humidity Range |
Oxygen - 0 to 99% RH non-condensing Toxic - 15 to 95% RH non-condensing Infrared – 0 to 95% RH non-condensing Pellistor - 0 to 95% RH non-condensing |
Operating Pressure | Ambient + or - 10% |
Hazardous Area Certification | |
Certificate Numbers |
IECEx SIR 08.0009X, Code Ex d IIC SIRA 08ATEX1031X, Code Ex d IIC |
Standards |
IEC 60079-0 : 2004 (Edition 4) IEC 60079-1 : 2007-04 (Edition 6) EN 60079-0:2018 EN 60079-1:2014 EN50270:2006 |
Temperature Codes |
T4 (Ta -20 to +60 deg C) T5 (Ta -20 to +50 deg C) – not applicable to infrared versions T6 (Ta -20 to +35 deg C) - not applicable to infrared versions |
Zones | 1 & 2 |
Suitable Applications
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