A-2-4
Appendix 2: Analyzer Module Operating Specifications
42/24-10 EN Rev. 9
Magnos206 Operating Specifications
Linearity deviation
≤
0.5 % of span
Repeatability
≤
50 ppm O
2
(time base for gas exchange
≥
5 minutes)
Zero drift
≤
3 % of span of the smallest measurement range (per order) per week, minimum
300 ppm O
2
per week; following prolonged transport and storage time the drift
can be higher during the first weeks of operation.
Sensitivity drift
≤
0.1 % Vol.-% O
2
per week or
≤
1 % of measured value per week (not cumulative),
the smaller value applies;
≤
0.25 % of measured value per year
Output fluctuation (2
σ
)
≤
25 ppm O
2
at electronic T90 time (static / dynamic) = 3 / 0 sec.
Detection limit (4
σ
)
≤
50 ppm O
2
at electronic T90 time (static / dynamic) = 3 / 0 sec.
Flow influence
≤
0.1 Vol.-% O
2
in permissible range
Associated gas
influence
The effect of associated gases with a concentration of 100 Vol.-% as a shift of the
zero-point (
Δ
Zero) in Vol.-% O
2
can be estimated using the guidelines in the
following table:
Associated Gas Concentr. 100 Vol.-%
Δ
Zero
Associated Gas Concentr. 100 Vol.-%
Δ
Zero
Hydrogen H
2
+0.28
Carbon
dioxide
CO
2
–0.32
Hydrogen sulfide
H
2
S –0.45
Carbon
oxysulfide
COS –0.90
Argon Ar
–0.26
Ethane C
2
H
6
–0.46
Helium He
+0.30
Ethylene
C
2
H
4
–0.29
Neon Ne
+0.13
Methane
CH
4
–0.24
Nitrogen N
2
0
.00
Propane
C
3
H
8
–0.98
Nitrogen oxide
NO
+43
.00
Propylene
C
3
H
6
–0.55
Nitrogen dioxide
NO
2
+28
.00
Trichloroethylene
C
2
HCl
3
–2.17
Nitrous oxide
N
2
O –0.20
Vinylchloride CH
2
CHCl –0.75
Carbon monoxide
CO
–0.01
For further associated gases refer to EN 61207-3
Temperature
influence
•
At zero-point:
≤
0.02 Vol.-% O
2
per 10 °C
•
On sensitivity:
≤
0.1 % of measured value per 10 °C
Ambient temperature in permissible range, thermostat temperature = 64 °C
Air pressure influence
•
At zero-point: no influence effect
•
On sensitivity without pressure correction:
≤
1 % of measured value per 1 % air
pressure change
•
On sensitivity with pressure correction by means of internal pressure sensor
(option):
≤
0.1 % of measured value per 1 % pressure change; for highly
suppressed measurement ranges
≤
0.01 % of measured value per 1 % pressure
change or
≤
0.002 Vol.-% O
2
per 1 % pressure change, whichever is greater.
Pressure sensor working range: p
abs
= 600 to 1250 hPa
Power supply
influence
24 VDC
±
5 %:
≤
0.4 % of span
Position influence
Zero-point
shift
≤
0.05 Vol.-% O
2
per 1° deviation from horizontal orientation.
Position has no effect on the hard-mounted unit.
T
90
time
T
90
≤
3.5 to 10 sec. at sample gas flow = 90 l/h and electronic T90 time (static /
dynamic) = 3 / 0 sec., gas switching from N
2
to air (applies to a gas analyzer with
one analyzer module)
