Oldham BM25 Operating Manual

41
2
2
.
. Sensors (non-exhaustive list)
Table No. 1
Methane
CH4
Propane
C
3
H
8
Methane
CH4
Oxygen
O
2
2 years
Oxygen
O
2
1 year
Carbon Dioxide
CO
2
Carbon
Monoxide
CO
Hydrogen
sulphide H
2
S
Sensor reference
6 313 888 6 313 888 6 313 889 6 313 780 6 313 817 6 313 818 6 313 787 6 313 788
Standard range (1) 0 - 100%
LEL CH4
0 - 100%
LEL C
3
H
8
0 - 100% vol 2 - 30 % volume 2 – 30 % volume
0 - 5 % v/v 1000 100
Measurement principle Thermo-
catalytic
Thermo-
catalytic
Catharo
metric
Electrochemical Electrochemical Infrared
absorption
Electrochemica
l
Electrochemica
l
Display resolution (1) 1 % LEL 1 % LEL 1% v/v 0,1 % v/v 0,1 % v/v 0,1 % v/v 1 1
Accuracy (2) 2 2 2 0.3 % v/v 0.3 % v/v 0.2 % v/v 15 3
Repeatability (3) ± 1 % LEL ± 1 % LEL ± 1 % vol 0,1 % v/v 0,1 % v/v 0.1 % v/v 1 1
Deviation of zero/sensitivity (4) 0,5 / 5 0,5 / 5 0,.2 / 2 0,2 / 2 0.2 / 2 0,2 / 2 0.5 / 1,5 0.5 / 2,5
Response time (5) < 20 seconds
< 25 seconds
< 20 seconds < 10 < 10 < 30 < 30 < 25
Temperature (6) -20°C to
+50°C
-20°C to
+50°C
-20°C to +50°C
-20°C to +40°C -20°C to +40°C -10°C to40°C -20°C to40°C -20°C to40°C
Relative humidity and pressure
range (7)
0 – 95 % RH
1 bar ± 20 %
0 – 95 % RH
1 bar ± 20 %
0 – 95 % RH
1 bar ± 20 %
10 – 95 % RH
1 bar ± 20 %
10 – 95 % RH
1 bar ± 20 %
10 – 95 % RH
1 bar ± 20 %
10 – 95 % RH
1 bar ± 20 %
10 – 95 % RH
1 bar ± 20 %
Service life (8) 48 months 48 months 60 months 28 16 60 36 36
Storage conditions and maximum
storage time (9)
-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
-40°C to +40
°C
10-60 % RH
1 bar ± 10 %
6 months
maximum
4 – 20 °C
10 – 60 % RH
1 bar ± 10 %
3 months
4 – 20 °C
10 – 60 % RH
1 bar ± 10 %
3 months
0 – 40 °C
10 – 60 % RH
1 bar ± 20 %
6 months
4 – 20 °C
10 – 60 % RH
1 bar ± 10 %
2 months
4 – 20 °C
10 – 60 % RH
1 bar ± 10 %
2 months
Response time (10) 30 s 30 s Sensors functional immediately after start up of
device
120 s Sensors functional immediately
after start up of device
Notes: - Measurement is
underestimated if oxygen
level is < 10%
- Exposure to high levels of
silicon or sulphur vapors
may damage the detector.
- The detector is sensitive to
a majority of explosive gases
- Presence of high levels of CO
2
can lead to an
over estimation of O
2
concentration
- Exposure to high levels of
organic solvents can damage the
sensors.
- Exposure to gases at higher
levels than detector’s range can
damage it Recalibrate sensors if
they go out of range.

Oldham BM25 Specifications

General

Brand	Oldham
Model	BM25
Category	Measuring Instruments
Language	English