32
2.1.
Technical Specifications and Particular Instructions for the CEX300 Explosive
Gas Detector
2.1.1. Metrological Specifications
Sensor type
C1000
Max. concentration
100% LEL
System
Catalytic
Life expectancy
> 36 months
Storage
Keep away from extreme temperatures (-
10°C < T < 35°C )
(10% < Relative Humidity < 60%) 6
months max.
Temperature range
-25°C to 55°C
Humidity range
0% RH to 95% RH
Pressure range
1 bar ± 10 %
Linear variation (methane scale)
Between 0 and 70% LEL:
≤
1% LEL
Between 70 and 100% LEL:
≤
7 % LEL
Measurement reproducibility
± 2 % of the measured value ± 1 LEL (or
± 0.05 % CH
4
)
Long-term drift
under normal
operating
conditions
Zero point:
Sensitivity
Methane
Propane/Butane
< 5% LEL methane / year
Standard drifts
< 20% of the measured value / year
< 10% of the measured value / year
Humidity effect (10 to 90% RH) at 40°C
± 5% of relative sensitivity
Max. recommended interval between calibrations
(under normal operating conditions)
6 months
Calibration content
30-80% of the LEL
Response time
(can
vary ± 10% from one
sensor to another)
Gas and
injected
quantity
Methane
(50 % LEL)
Hydrogen
(50 % LEL)
Pentane
(52% LEL)
Styrene
(45% LEL)
t25
4 s
3 s
8 s
12 s
t50
8 s
6 s
12 s
40 s
t90
15 s
10 s
27 s
60 s
Detectors CTX 300 SC are compliant with the standard EN14624 which defines tests and
methodology in order to specify performance of portable and fixed detectors
.
Measuring range
2000 ppm pour R134A ou R22
Maximum sensitivity threshold
5000 ppm
during 90s without sensitivity loss
Recommended Alarm Threshold
200 ppm
Minimum sensitivity threshold
10 ppm
Minimum time to detect the lowest concentration
less than 25s after injection of 500 ppm R134A
Recovery time
less than 160s after injection of 8 min of 1000
ppm R134A
Содержание OLDHAM 300 Series
Страница 20: ...21 CALIBRATION CURVES CO2 IR Transmitter Output Signal...
Страница 21: ...22 CO2 DETECTOR 0 10000 ppm 1 measurement range DISPLAY Display Concentration in ppm CO2...
Страница 22: ...23 CO2 DETECTOR 0 5 CO2 measurement range DISPLAY Display Concentration in CO2...
Страница 23: ...24 CO2 DETECTOR 0 10 CO2 measurement range DISPLAY Display Concentration in CO2...
Страница 24: ...25 CO2 DETECTOR 0 50 CO2 measurement range DISPLAY Display Concentration in CO2...
Страница 34: ...35 VI CERTIFICATIONS...
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Страница 41: ...42 ANNEX 3...
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