FI-900

Our FI-900 fixed gas analyzer features a new and improved version of our original optical interferometric sensor technology which can measure practically any gas simply by using its inherent refractive index. Suitable for corrosive gases such as NH3 and VCM as well as in the presence of H2.

Feature01

Monitor even hard-to-measure gases

All gases have their own inherent refractive index. Changes in this value are converted to determine the concentration of each gas. This allows us to get readings on even so-called hard-to-measure gases. While this method should in theory allow for the measurement of any gas, in practice it can be difficult to determine the gas concentration of combinations of gases with extremely similar refractive indexes.

Feature02

Maintenance-free

The FI-900 uses physical sensors rather than chemical reactions, eliminating the use of consumables and therefore the need for ongoing internal maintenance. (Regular verification of indicated values using standard gas is recommended.) Its physical sensors provide lasting stability without loss of sensitivity over time, and have even been known to last as long as 10 years before replacement.

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Feature03

Perfect for facility operations control

Our FI-900 gives you optimal precision and rapid continuous response times, making it the perfect tool for facility operations control. With an accuracy +/-3% FS, the FI-900 provides continuous measurements every 250 milliseconds and a rapid response time with a T90 of less than 15 seconds.

Product Name	FI-900
Product Image
Product Subtitle	Gas Analyzer
Product Type	Fixed Gas Analyzer
Industries	Infrastructure, Sustainable Energy, Marine, Oil & Gas, Steel
Use Purpose	Concentration management
Single/Multi	Single
Certification	Japanese Certification, IECEx, ATEX
Detectable Gas	All gases with refractive indices (only high concentration in vol%)
Detection Range	N/A
Principle of Detection	Interferometer Method
Sampling Method	External sampling device
Ingress Proof Rating	N/A
Dimensions	Approx. 286 (W) x 453 (H) x 150 (D) mm
Weight	Approx. 23kg
Remarks	Self-diagnostic function
Power Source	100 to 240 VAC±10 %, or 24 VDC ±10 %
Continuous Operation	N/A
Operating Temperature Range	-20 to +60 ℃ (no sudden changes)
Operating Humidity Range	0 to 95 %RH (no condensation/use of condensible gases within unit) (no condensation)
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Since our beginnings in 1939, Riken Keiki has continued to lead the way in gas detection technology, laying the foundations that support our modern society.

Discover why customers continue to choose Riken Keiki, the global standard in gas detection equipment.