Serinus 51 User manual 1.0
Operation
17
Reading (1) Averages (2)
The Reading and Averages section takes up most of the screen, it
displays the concentration being measured in real time including during
calibrations. When the instrument is changed in the Front screen field
(General settings section 3.5.3) from “inst only” to “inst & avg” the
reading will display both the average concentration (above) and the
instantaneous concentration.
Status/Error line (3)
The Status/Error line provides users with information on any problems
the instrument may have. It includes all the status/errors contained in the
Status Menu section 3.5.2.1.
Instrument Activity (4)
The Instrument activity line shows what function the instrument is
currently performing. This will generally be showing three groups of
actions; Warm-up (section 3.1), Measurement (section 3.4) or
Calibration (section 4).
Menu buttons (5)
The Menu buttons are used on the main screen to enter one of two
menus. The Quick Menu (section 3.5.1) contains all information and
features necessary in scheduled maintenance; the Main Menu (section 0)
contains all information and fields available to users and is generally
only used during initial setup.
Time and Date (6)
The Time and Date are displayed in between the menu buttons at the
bottom of the screen. Time and Date are displayed as selected in section
3.5.3.
Concentration Units (7)
The current instrument units are displayed at the bottom right hand
corner of the main screen.
USB detection (8)
A USB symbol will be displayed in the bottom right corner when the
USB key is plugged in (behind front panel). If the USB symbol is not
shown the USB key should be reattached. Underneath the USB symbols
arrows may be displayed which indicates data transfer. The USB key
should not be removed whilst this is happening.
3.4 Sampling
The Sampling performed by the Serinus 51 involves two cycles, an SO
2
cycle and a
H2S cycle. The SO
2
cycle samples air directly from the valve manifold to the cell as
per a standard SO
2
analyzer. The H
2
S cycle draws sample air firstly through an SO
2
selective scrubber to eliminate SO
2
and then a thermal converter which converts all
the H
2
S into SO
2
. The sample is then analyzed in the cell. A background is performed
once a day (normally leading up to midnight) and is used to measure background
fluorescence in the cell and subtract it from sample measurements.
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