The QuickTONb® of LAR Process Analysers
AG is an on-line measuring system for the determination of total nitrogen
(TNb) according to DIN 38409 part 27, ENV 12260 and ISO - TR11905-2.
The QuickTONb® is suitable for almost
every TNb-measurement in process control or sewage and industrial
waste water application. Typical on-line applications are control of the
production (e. g. the chemical and petrochemical industries) and monitoring the
influent and effluent of both industrial and municipal waste water treatment
The current state of the art engineering for thermal catalytic
oxydation uses temperatures between 680° and 1000°C. The
QuickTONb® has been engineered to work by using
temperatures of more than 1200°C. Therefore, all nitrogen compounds are oxidized
effectively and rapidly, regardless of their composition.
The QuickTONb® is designed to operate in
a batch mode. The TNb is analysed in 3 minutes. This guarantees the
determination of fast and transient peaks throughout the day.
The sample is taken using the patented and maintenance-free
sampling system FlowSampler. FlowSampler works filtration-free and takes
the sample in the centre of the sample stream against the direction of the main
Even solid particles are sampled by the FlowSampler and
reduced in size by a homogenizer. The sample is then pumped by the homogenizer
through a flow through sample cell. In the sample cell the sample is
continuously stirred to keep it in a homogenized, representative state.
The sample injection volume is controlled by an XY- syringe
sampling system. The sample aloquote is then injected into the septumless
injection port of the reactor.
By using a temperature of more than 1200°C the
QuickTONb® obtains complete combustion of the nitrogen
components in the sample. An important advantage compared with wetchemical
methods is the complete detection of particle bounded nitrogen. At this high
combustion temperature the analyzer´s percentage recovery for ammonia and
nitrate nitrogen is excellent.
A main advantage of the high temperature combustion method
used in the QuickTONb® is that no reagents are necessary
for the operation of the system. This feature provides outstandingly low service
and operation costs, even in continuous mode.
The combustion gas from the reactor flows through a 2 stage
gas-cooler which is maintained at 4°C, to an absorption column before flowing
into the chemiluminescence detector (CLD).
The CLD detects the nitrogen monoxide (NO) with excellent
linearity and the highest possible accuracy. The NO-signal is converted to a
peak profile that is calculated by the internal data processor to the
Alternatively an electrochemical detector (ECD) is available.
The ECD shows also excellent results in the range of 0-200mg/l N.
The software supports every available function from
controlling the QuickTONb® to further processing of the
measured values. An uncomplicated data transfer through serial or parallel
interfaces to a monitoring station is a matter of course.
All these features result in a user-friendly analyser with low
maintenance requirements, high reproducibility and fast measuring results for
many years - the QuickTONb® by LAR.
|Type of measurement
||0 - 200 mg/l N|
||maintenance-free particle separator|
Ultra-Turrax for continous homogenisation of the
|Graphic-LCD-screen, high resolution, back lit|
|Self-explanatory software including maintenance checklists and
|Industry standard data interface|
|Waste water, drain
||tube 30 mm ID or threaded 32mm OD or as
||230 / 115 V~, 50 / 60 Hz|
||0/4 - 20 mA|
||RS 232 for remote control|
||4 relay contacts|
||steel IP 54 (NEMA 13)|
||1020 x 700 x 520 mm (H x W x D)|
40.2 x 27.6 x 20.5
inches (H x W x D)
||115 kg (254 lbs)|
||NEMA 4X (Class I Div 2)|