FI-21
Optical Gas Analyser
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This product has been discontinued and is no longer available. In many cases we can still service and calibrate it. Talk to our team about spares or alternatives.
The FI-21 is a precision optical gas analyser that measures the percentage-volume concentration of commonly used gases in air or oxygen. It is calibrated for eight selectable gases and uses interferometric CCD and Fourier analysis technology with a built-in sample pump.
KEY BENEFITS
- Capable of measuring up to 8 kinds of gases
- Gas selection with simple key operation
- Direct digital readout
- Built-in sampling pump
- High-accuracy measurement using CCD and Fourier analysis technology
+ more in the Description tab below
Precision optical analysis for gas purity and concentration
The Gas Detector Model FI-21 is a precision gas analyser adapted to measure the percentage-volume concentration of any commonly used gas in a mixture of air or oxygen, for solvents, fumigation, gas purity and anaesthetic gases.
The standard instrument is calibrated for eight selectable gas readings on a direct digital display. The FI-21 operating principle uses highly accurate CCD and Fourier analysis technology combined with electronic circuitry to deliver a direct digital readout.
Equipped with a built-in sample-draw pump for ease of use, the FI-21 also logs measurement data and requires few consumable parts, helping to keep maintenance costs low.
Benefits
- Capable of measuring up to 8 kinds of gases
- Gas selection with simple key operation
- Direct digital readout
- Built-in sampling pump
- High-accuracy measurement using CCD and Fourier analysis technology
- Data logging stores up to 100 readings
- Few consumable parts, saving on maintenance cost
- Suitable for solvents, fumigation, gas purity and anaesthetic gases
Detection principle
Optical interferometric method
Display
Digital (measuring gas, base gas, concentration, time, etc.)
Structure
Non-explosion proof
Measuring method
Batch measurement
Gas sampling method
Suction by internal pump (pump stops while reading)
Indication accuracy
Within +3% of indication value + 1 digit
Outputs
Data logger, 0-1 VDC
Operating temp & humidity
5-35 degrees C, below 80% RH
Operating pressure
Atmospheric pressure
Power source
C-size alkaline batteries (4 pcs) or AC adaptor (optional)
Battery life
Approx. 20 hours (without sampling)
Dimensions & weight
Approx. 20 x 14.5 x 8 cm, approx. 2 kg
The standard instrument is calibrated for eight selectable gases, chosen with simple key operation and shown on a direct digital display.
It uses an optical interferometric method with highly accurate CCD and Fourier analysis technology to provide a direct digital readout.
The FI-21 draws samples using a built-in internal pump, which stops operating while a reading is taken. Measurement is by batch method at atmospheric pressure.
It is used for measuring gas concentrations of solvents and fumigation gases, gas purity, fuel calories and anaesthetic gases.
It runs on four C-size alkaline batteries giving approximately 20 hours of use without sampling, or an optional AC adaptor.
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