Serinus 51 User manual 1.0
Introduction
1
1
Introduction
1.1 Description
The Serinus 51 SO
2
/H
2
S analyzer uses UV fluorescent radiation technology to detect
Sulfur Dioxide and Hydrogen Sulfide to a sensitivity of 0.5 ppb in the range of 0-2
ppm. The Serinus 51 measures SO
2
/H
2
S with the following instruments/techniques:
• SO
2
scrubber
• Thermal converter
• Hydrocarbon kicker
• UV lamp
• Fluorescence cell
• Optical bandpass filters
• Photomultiplier tube (PMT)
H
2
S is measured by first scrubbing the SO
2
out of the sample with an SO
2
scrubber,
and then converting H
2
S into SO
2
with a thermal converter, The SO
2
concentration
measured is performed directly with a bypass taking the sample around the SO2
scrubber and thermal converter. All measurements are automatically corrected for gas
temperature and pressure changes and referenced to 0°C, 20°C or 25°C at 1
atmosphere. This allows the Serinus 51 to sample in the most useful range of SO
2
and
H
2
S ambient measurement (0-25 ppb SO
2
in air,). This manual will detail the
operation, calibration, preventive maintenance, cautions and health warnings.
1.2 Specifications
1.2.1 Measurement
Range:
• 0-2 ppm auto ranging
Lower detectable limit:
• < 0.5 ppb or 0.2% of concentration reading, whichever is greater; with Kalman
filter active.
1.2.2 Precision/Accuracy
Precision:
• 0.5 ppb
Linearity:
• ±1% of full scale (from best straight-line fit).
Sample flow rate:
• 0.725 slpm
1.2.3 Calibration
Zero drift
• Temperature dependant: 0.1 ppb per °C
• 24 hours: < 1.0 ppb
• 30 days: < 1.0ppb
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