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.
FI-8000 gives extremely accurate (typically 3% of Reading across the whole range) and stable readings as long as there is minimal or no interference gases present. See below Downloads and Datasheet for some examples of the versions available. If you don't see the gas combination required, please Contact us
Note: you can have up to 8 different gases and ranges in one instrument as long as they are all in the same chamber length see data sheet gas list.
Can have up to 8 different ranges to cover many Applications
Highly accurate across the entire range
Operates continuously for over 12 hours (on 3 AA batteries). Optional Lithium ion battery unit give over 18 hours continuous use.
Ingress Protection IP67 (suited for outdoors), with robust impact resistant rubber
No replaceable sensor optics last many years if maintained properly
Two sample methods available: Sample Pump or Hand Aspirated
Up to 256 points of data can be recorded either automatically at specified time intervals, or by instantaneous manual recording.
Switches the pump off into a power-saving standby state that saves battery life (for sample pump type only)
CE ATEX intrinsic safety explosion class II 1G Ex ia IIC T4 Ga
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.
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.
The FI-8000 is also used in many other applications; such as Fumigation, Solvents, Inert Gases, Toxic Gases, and Gas Purity.
|Measuring principle||Optical Interferometric Method|
|Measuring gas||(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|