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66
BM 25A/AW
Instruction Manual
Table No. 6
Nitrogen dioxide
(NO
2
)
Sulfur dioxide
(SO
2
)
Sensor P/N
6313801
6313819
Standard range (1)
30
30
Measurement principle
Electrochemical
Electrochemical
Display resolution(1)
1
1
Accuracy (2)
1
1
Repeatability (3)
1
1
Zero/Span drift (4)
0.5 / 5
0.5 / 2
lowest recommended
alarm threshold (11)
3ppm
2ppm
Response time (5)
< 30s
< 60s
Temperature (6)
-20°C to +40°C
-20°C to +50°C
Relative humidity and
pressure range (7)
■
10
– 90% RH
■
bar ± 20%
■
15
– 95% RH
■
1 bar ± 20%
Lifetime (8)
30 months
24 months
Storage conditions and
maximum storage time
(9)
■
4°C
– 20°C
■
10
– 60% RH
■
1 bar ± 10%
■
2 months
■
4°C
– 20°C
■
10
– 60% RH
■
1 bar ± 10%
■
2 months
Warm-up Delay (10)
Operational upon start up
Notes
■
Exposure to high levels of organic solvents
can damage the sensors.
■
Exposure to gases at levels higher than the
monitor’s range can damage the device.
Recalibrate sensors if they go out of range.
1.
In ppm unless otherwise specified.
2.
At 50% of scale (same unit as range).
3.
As % of signal read unless otherwise specified.
4.
Nominative values in normal use conditions per month as % of scale for zero and as % of
measurement for sensitivity.
5.
In seconds at 90% of final value.
6.
In °C.
7.
Without condensation.
8.
Averaged value. In normal conditions. 12 month warranty.
9.
All sensors must be protected from air when stored.
10.
Time to reach full performance of the sensor after warm-up.
11. at 20°C. TWA and STEL values depend on the country of use and might be lower. It is your
responsibility to check the product suits your application.
Other gases, other ranges: consult us at
Summary of Contents for BM 25A/AW
Page 1: ...BM 25A AW Area Gas Monitor Part Number NP25AEN Version C 4 User Manual ...
Page 10: ...10 BM 25A AW Instruction Manual Product Overview Figure 2 Product Overview ...
Page 18: ...18 BM 25A AW Instruction Manual ...
Page 34: ...34 BM 25A AW Instruction Manual ...
Page 70: ...70 BM 25A AW Instruction Manual ...
Page 75: ...9 Special Instructions 75 CSA Control Drawing for BM 25A AW Connections ...
Page 78: ...78 BM 25A AW Instruction Manual ...