Optical Interferometric Gas Analyser – FI-900

Features

Uses an optical interferometric sensor with high reliability and backed with an 80-year track record
Gas analyser with refinements made to the optical interferometric sensor developed when our company was founded
Sensor with no degradation in sensitivity and excellent long-term stability means replacement is not required for 10 years
Takes measurements using gas-specific refractive indices, making it capable of measuring a wide range of gases
Capable of detecting corrosive gases like methylene chloride, NH3 and VCM gases
Flameproof enclosure (ATEX/IECEx/Japan Ex) that can even be used in H2 environment
Comprehensive self-diagnostic function, and checks of gas concentrations as well as status using MODBUS communications
Ideal for preventing explosions and monitoring concentrations of VOCs, and monitoring concentrations of hydrogen gas

Description

Overview:

The FI-900 is equipped with Long-term Stability Optical Interferometric Sensor, ideal for controlling gas concentrations in Manufacturing Processes. Uses an optical interferometric sensor with high reliability and backed with an 80-year track record. Capable of detecting corrosive gases like methylene chloride, NH3 and VCM gases. The FI-900 has a flameproof enclosure (ATEX/IECEx/Japan Ex) that can even be used in H2 environment. Comprehensive self-diagnostic function, and checks of gas concentrations as well as status using MODBUS communications. Ideal for preventing explosions and monitoring concentrations of VOCs, and monitoring concentrations of hydrogen gas.

Certification

ATEX (Equipment for explosive atmospheres) explosion-proof certified product. IECEx (IEC System for Certification to Standards Relating to Equipment for Use in Explosive Atmospheres) certified product. TIIS (Technology Institution of Industrial Safety) explosion-proof certified product. CE Marking conforming product.

Optical Interferometric Gas Specification

Model	FI-900
Measuring principle	Optical interferometric method
Measuring gas	Combustible gases, solvent vapors, inert gases
Measuring range	Depending on gas specifications
Alarm setpoint	Depending on gas specifications
Measurement accuracy	F.S. within ±3% (under same conditions)
Response time	T90: within 30 seconds
Measurement method	Specified flow gas feed from external sampling unit
Display	Full-dot LCD (with backlight)
External output	4-20 mA DC (insulated, current throw type), permitted resistive load 300 Ω or less Minimum resolution 0.01 mA or less
Communications output	RS-485 (MODBUS) communication function
Alarm relay contact 1	Non-voltage contact, contact capacity 1 A 30 V DC (resistive load)
Alarm relay contact 2	Non-voltage contact, contact capacity 1 A 30 V DC (resistive load)
Malfunction contact	Non-voltage contact, contact capacity 1 A 30 V DC (resistive load)
Power supply	24V DC±10％ / 100 – 240V AC±10% 50/60Hz* The ATEX/IECEx specifications apply to DC power source only
Power consumption	Max. 6 W (24 V DC±10%) / Max. 20 VA (100 – 240 V AC ±10% 50/60 Hz) *The ATEX/IECEx specifications apply to DC power source only
Protection class	Equivalent to IP66/67
Operating temperature range	-20 to +60℃ _(ATEX/IECEx specifications) / -20 to +57°C (Japan Ex specifications) (no sudden changes)
Operating humidity range	0 to 95% RH (no condensation/use of condensible gases within unit) (no condensation)
Operating pressure range	Atmospheric pressure or equivalent (no pulses)
Outer dimensions	Approx. 286 (W) x 453 (H) x 150 (D) mm (projection portions excluded)
Weight	Approx. 23 kg
Explosion-proof structure	Flame-proof enclosures
Explosion-proof class	Ⅱ2G Ex db ⅡB+H2 T4 Gb (ATEX) / Ex db ⅡB+H2 T4 Gb (IECEx) / Ex dⅡB+H2 T4 (Japan Ex)
Self-diagnostic function	Status monitoring in 4 separate categories ・FAILURE ・FUNCTION CHECK ・MAINTENANCE REQUIRED ・OUT OF SPECIFICATION
Accessories	Control key, Allen key (2 types), cable ground, plug