Siemens ULTRAMAT 23 Series - UV Module

3.4.3 UV module
To ensure compliance with the technical speci󹪝cations, a cycle time of ≤ 24 hours must be
activated for the AUTOCAL.
Measuring ranges
SO
2
• Smallest measuring range
• Largest measuring range
0 ... 50 mg/m
3
0 ... 1250 mg/m
3
NO
2
• Smallest measuring range
• Largest measuring range
0 ... 50 mg/m
3
0 ... 1000 mg/m
3
The measuring ranges are calibrated with a certi󹪝ed calibration gas, in which case a concentration speci󹪝cation in ppm in
accordance with EN 1343 must be converted to the unit mg/m
3
at a reference temperature of 0 °C and a reference pressure of
1013 hPa.
Time response
Warm-up period 55 minutes after reaching the setpoint temperature of the UV module.
After longer periods of storage or transport, the device should be switched
on for 48 hours to meet the drift speci󹪝cation.
Response time (T
90
time) Dependent on the external gas preparation, the length of the sample gas
feed line and the con󹪝gurable damping (see below) of the analyzer
Note: SO
2
and NO
2
are highly soluble in water!
≤ 30 s after sample gas input at a damping of ≤ 12 s
Damping (electronic time constant) 0 ... 99.9 s, adjustable
Measuring behavior at analog output
Output signal noise ≤ 1% of set full-scale value (or smallest possible measuring range according
to nameplate)
Detection limit
• SO
2
• NO
2
0.25 mg/m
3
0.5 mg/m
3
Linearity error
• In the largest measuring range
• In the smallest measuring range
≤ 1% of set full-scale value
≤ 2% of set full-scale value
Repeatability ≤ 1% of set full-scale value
Climatic conditions (restrictions)
Permissible ambient humidity 30 ... 85% RH (relative humidity) during operation
Description
3.4 Technical speci󹪝cations
ULTRAMAT 23
36 Equipment Manual, 04/2022, A5E37100388-012