The FI-8000 is the latest model from Riken in a long line of optical interferometers dating back to the 1930’s when Riken’s founder first developed the technology for Methane detection to help prevent explosion accidents on oil tankers and in coal mines.
In the 1970’s Weatherall developed with Riken the instrument for anaesthetic gases. In conjunction with Dr John F Nunn’s research, published in the British Journal of Anaesthesia, helped validate the principle of interference refractometry as a technique suitable for measuring anaesthetic gases such as Halothane, Isoflurane, Sevoflurane, Desflurane and Enflurane.
The FI-8000 is also used in many other applications; such as Fumigation, Solvents, Inert Gases, Toxic Gases, and Gas Purity.
Today, Riken’s interferometer is considered the instrument of choice for anaesthetic vaporiser checking, in part due to its portability, robustness, low cost, and reliable measurements. It is used throughout the NHS, veterinary clinics MOD, and by vaporiser manufactures / service companies.
|Detection gas||Base gas||Range|
|*Available on request. Select up to a maximum of 8 gas ranges per instrument.|
Other gases may be possible. Please contact us if you would like to measure a non-listed gas.
The FI-8000 is also used for many other applications; such as Fumigation, Solvents, and Gas Purity.
|Measuring principle||Optical Interferometric Method|
|Measuring gas||Desflurane, Isoflurane, Sevoflurane, and Halothane, Enflurane.
(other gases may be possible. Please contact us if you would like to measure a non-listed gas)
|Indication accuracy||Within ±3% (at constant temperature)*|
|Type||TYPE P-_ _-_ _||TYPE A-_ _-_ _|
|Sampling method||Pump suction type||Hand-aspirating type|
|Self-diagnosis function||Low battery, Low light , Low contrast, abnormal atmospheric pressure and abnormal temperature|
|Display||LCD digital (7-segment value display + code + 20 segment word x 2 lines)|
|Screen||Measuring gas, gas concentration , measuring unit and battery capacity reminder|
|Power source||Alkaline battery pack(AA size battery x 3 pcs) (standard)
Or, Lithium ion battery (optional)
|Ingress proof rating||IP67 equivalent|
|Ambient humidity & temp||Temperature : -20~50°C, Humidity : Below 95%RH (non-condensing)|
|Weight||Approx. 1.1kg (including alkaline batteries)
Approx. 1.2kg (including lithium ion batteries)
|Explosion proof||Intrinsically safe(Exia II CT4) (ATEX)|
|Continuous operation||Over 12 hrs (for alkaline battery use)
Over 18 hrs (for lithium ion battery use)
(25°C with no backlight on)
|Over 16 hrs (for alkaline battery use)
Over 24 hrs (for lithium ion battery use)
(25°C with no backlight on)
|External output||IrDA (for data logging)|
|Function||Data logging , atmospheric pressure correction, temp. compensation|
*Indication accuracy subject to the measuring gas