Flame-ionization detector Fidas24
Measurement principle: Flame-ionization detector
The analyzer complies with the requirements for measuring instruments with flame ionization detection according to EN 12619.
Sample Components and Measurement Ranges
Sample components: Hydrocarbons (THC). The sample component concentration in the sample gas should not exceed 100 % of the LEL.
Number of sample components: 1 sample component
Smallest measurement range:
0–5 to 0–1500 mg org. C/m3 or
0–10 to 0–3000 ppm C1
Largest measurement range:
0–18 to 0–5000 mg org. C/m3 or
0–35 to 0–10000 ppm C1
Measurement range quantity: 2 measurement ranges
Measurement range limits: The measurement range limits can be freely set in the ranges specified above.
Stability
The following data apply only if all influence factors (e.g. flow rate, temperature, atmospheric pressure) are constant. They apply to measurement ranges ≥ 50 mg org. C/m3, for smaller ranges these only apply if they are factory-set per customer order.
Linearity deviation: ≤ 2 % of the span to 5000 mg org. C/m3
This value applies in one (calibrated) measurement range
Repeatability: ≤ 0.5 % of measurement range
Zero-point and sensitivity drift: ≤ 0.5 mg org. C/m3 per week
Output fluctuation (2 σ): ≤ 0.5 % of span at electronic T90 time = 20 sec, not smaller than 10 μg org. C/m3
Detection limit (4 σ): ≤ 1 % of span at electronic T90 time = 20 sec, not smaller than 20 μg org. C/m3
Influence Effects
Oxygen dependence: ≤ 2 % of measured value for 0–21 vol.% O2 or ≤ 0.3 mg org. C/m3, the larger value applies
Temperature effect: Ambient temperature in permissible range at zero-point and on sensitivity: ≤ 2 % per 10 °C in measurement range of 0–15 mg org. C/m3
Pressure effect: No effect of ambient pressure or process pressure fluctuations within the permissible sample gas inlet pressure range
Power supply effect: DC 24 V ± 5 %: ≤ 0.2 % of span or AC 230 V ± 10 %: ≤ 0.2 % of span
