Oldham BM25, Руководство пользователя

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7 - Technical Specifications 61
Sensors
Non-exhaustive list.
Table No. 1
Methane
(CH
4
)
Methane
(CH
4
)
Methane
(CH
4
)
Sensor reference 6314064 6313888 6313889
Standard range (1) 0 - 100% LEL CH4 0 - 100% LEL CH4 0 - 100% vol
Measurement principle Infrared Catalytic Catharometric
Display resolution(1) 1 % LEL 1 % LEL 1% v/v
Accuracy (2) 2 2 2
Repeatability (3) ± 2 % LEL ± 1 % LEL ± 1% vol
Zero/Span drift (4) 1 / 2 0.5 / 5 0.2 / 2
Response time (5) < 30s < 20s < 20s
Temperature (6) -20°C to +55°C -20°C to +50°C -20°C to +50°C
Relative humidity and
pressure range (7)
■
0
– 99 % RH
■
1 bar ± 10 %
■
0
– 99 % RH
■
1 bar ± 20 %
■
0
– 99 % RH
■
1 bar ± 20 %
Service life (8)
> 60 months 48 months 60 months
Storage conditions and
maximum storage time
(9)
■
4°C to +20 °C
■
10-60 % RH
■
1 bar ± 10 %
■
6 months
maximum
■
-40°C to +40 °C
■
10-60 % RH
■
1 bar ± 10 %
■
6 months
maximum
■
-
40°C to +40 °C
■
10-60 % RH
■
1 bar ± 10 %
■
6 months
maximum
Warming-up delay (10)
300s 30s 30s
Notes
Hydrogen cannot be
detected with IR
sensor.
■
Measurement is
underestimated
if oxygen level is
< 10 %.
■
Exposure to high
levels of silicon or
sulfur vapors may
damage the sensor.
■
The monitor is
sensitive to the
majority of
explosive gases.