Siemens ULTRAMAT 23 Series Equipment Manual page 35

Climatic conditions (restrictions)
Permissible ambient humidity
• During operation
Influencing variables
Drift
• AUTOCAL cycle activated
• AUTOCAL cycle deactivated
Temperature
Air pressure
Auxiliary power supply
Line frequency
Limitations of the measuring range 0 ... 200 mg/m
(analyzer versions 7MB2335-xNBxx-xAAx, 7MB2337-xNBxx, 7MB2337-xxxxx-xNBx, 7MB2338-xxxxx-xNBx)
Availability
AUTOCAL cycle time
Temperature variations
Other
Note
Device series 7MB235x
• Maintenance intervals: Refer to the current certificates in accordance with EN 15267.
• The current certificates can always be found on the Internet at: Approvals and certificates
(https://support.industry.siemens.com/cs/de/en/ps/17728)
ULTRAMAT 23
Equipment Manual, 04/2022, A5E37100388-012
30% ... 85% RH (relative humidity); influence on measurement of SO
NO exists
Note:
After longer periods of storage or transport, the device should be switched
on for 48 hours to meet the drift specification.
At an ambient temperature of 25 ±2 °C
Drift with 24 h Autocal <3% based on the smallest measuring range ac‐
cording to the nameplate
Drift <3% based on the smallest measuring range according to the name‐
plate per 24 h
Max. 2% of the smallest measuring range according to rating plate
per 10 K with an AUTOCAL cycle time of 6 h
< 1% of the measuring range per 1% pressure change
< 0.1% of the output signal span with a change of ±10%
±2% of full-scale value with a frequency variation
of ±5%
SO
3
2
Max. 95%
Max. 6 h
Max. 1 °C (1.8 °F)
The device must not be operated in an area subject to drafts. This is espe‐
cially valid for the rear panel with large cooling element.
This measuring range has not been suitability-tested.
Description
3.4 Technical specifications
and
2
35