Serinus 44 User Manual 3.0
The changes in instrument response to zero
pollutant concentration over time.
Is purified air in which the concentration of NO is
<0.5 ppb and NO
2
is <0.5 ppb with water vapour of
less than 10% RH. Sufficient purified air can be
obtained by passing dry ambient air through an
activated charcoal scrubber, a Purafil scrubber and a
particulate filter.
Span gas that is delivered via an external accredited
cylinder containing NO in balance with N
2
(e.g.
NATA/NIST).
Sample air is defined as the sample before it has
entered the reaction cell, as distinguished from the
exhaust air.
Exhaust air is the sample air after it has passed
through the reaction/measurement/detection cell
and is moving towards being expelled from the
instrument.
These are measurements of tubing, ID is the internal
diameter of tubing, and OD is the outer diameter.
A configuration of multiple instruments connected
via the same RS232 cable.
A highly sensitive device which can detect extremely
low levels of light (photons) and multiply the
electrical signal to a point where it can be accurately
measured. These are often called PMT’s for short.
A program that checks whether the current
firmware is valid and executes the instrument start-
up. The Bootloader can be entered by pressing the
‘+’ key on the front keypad during the first ½ second
after power on, and following the prompts. The
Bootloader enables various low level recovery tools,
including updating the main firmware from a USB
stick.
Printed Circuit Assembly. An electronic circuit
mounted on a printed circuit board to perform a
specific electronic function.
Standard litres per minute. This is the flow
referenced to standard temperature and pressure
conditions. For the purposes of this manual, all flows
are referenced to 0 °C and 101.3 kpa (1 atm).
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