Siemens ULTRAMAT 23, Manual, Page: 36 / 244

Description
3.4 Technical specifications
ULTRAMAT 23
36
Manual, 3/2016, A5E37100388-003
Influencing variables
Drift
•
With AUTOCAL
• Without AUTOCAL
Negligible
< 2 % of smallest measuring range/week
Temperature max. 2 % of smallest possible measuring range according to label per
10 K with an AUTOCAL cycle time of 6 h
Air pressure &lt; 0.2 % of measuring range per 1 % change in pressure
Power supply &lt; 0.1 % of output signal span with a variation of ±10 %
Line frequency ± 2 % of full-scale value with a frequency variation
of ± 5 %
Deviations with measuring range 0 ... 200 mg/m
3
SO
2
(analyzer versions 7MB2335-xNBxx-xAAx, 7MB2337-xNBxx, 7MB2337-xxxxx-xNBx, 7MB2338-xxxxx-xNBx)
Availability
Max. 95 %
AUTOCAL cycle time Max. 6 h
Temperature variations Max. 1 °C (1.8 °F)
The device must not be operated in an area subject to drafts. This is
especially valid for the rear panel with large cooling element.
Other This measuring range has not been suitability-tested.
Deviations with measuring range 0 ... 100 mg/m
3
SO
2
(analyzer versions 7MB2335-xNTxx-xAAx, 7MB2337-xNTxx-xxxx, 7MB2337-xxxxx-xNTx, 7MB2338-xxxxx-xNTx)
Delayed display (T
90
time) Depending on the external gas conditioning.
Note: SO
2
is highly soluble in water
Output signal resolution ≤ 0.1 mg/m
3
Linearity error ≤ 2 mg/m³ (2% of smallest measuring range)
Drift
• With constant ambient conditions
•
After temperature jump
≤ 0.33 mg/m³ per hour after a running -in period of 200 hours
Not defined
Temperature influence ≤ 8 mg/m³ per 10 K dev iation; additional drift after temperature jump
Influence of auxiliary power ≤ 0.4 mg/m³ with a change of ± 10%
Influence of line frequency ≤ 8 mg/m³ with a change of ± 5%
Cross-sensitivities Refer to following table
Availability Max. 95 %
AUTOCAL cycle time Max. 3 h
Temperature variations Max. 1 °C (1.8 °F)
The device must be operated at a constant ambient temperature. The
device must not be operated in an area subject to drafts. This is especial-
ly valid for the rear panel with large cooling element.
Other This measuring range has not been suitability-tested.