Sampler System K 370/K 371

Sampler System K  370/K  371
Kjeldahl
Sampler System K�370/K�371
en
AutoKjeldahl Unit K�370 – the total solution with
integrated titration and data management
The K�370 is the most convenient solution available for precise analysis in Kjeldahl
labs handling large sample throughputs. The K�370 is a fully-automatic system
designed for the most demanding users. The K�370 sets new standards of safety,
guarantees accurate measurement results, and for the first time, offers an upgrade
option to include an autosampler.
Advantages
Rapid installation on standard lab
desks
Automatic emptying of sample tube
and receiving vessel after distillation
and determination
Compact stand-alone unit with
modern, functional design
Leading-edge, high-performance
multitasking software
Numerous safety features
Transparent distillation area enabling
visual monitoring of the process
Electronic regulation of steam output
30% –100%
Working parts easily accessible from
front thanks to service door
Options
Automated sample changing in
combination with Autosampler K-371
Level sensors for monitoring
chemical and waste tanks
External dosage device for back
titration
External keyboard
High-performance – multitasking software –
convenient operation
Multilingualre
Eleven different languages at your choice
Multitasking softwaree
Simultaneously carry out measurements, or process output
data
Numerous safety featurese
Protective door sensor
Sample tube in place sensor
Service door sensor
Warnings and error messages
Cooling water flow sensor
Cooling water ON/OFF-automatics
Level sensors for monitoring chemical and waste tanks
(optional)
Drip tray
System for automatic emptying (aspiration) of sample tube
and receiving vessel when procedure is finished
Automatic dosage of NaOH, water and boric acid
Automatic self-test
Convenient operation
High-resolution, high-contrast color-display
Easy to read control panel with integrated keyboard
High-performance software
High-performance
Maintenance free, high-performance steam generator
Kjeldahl Sampler System K�370/K�371 –
an outstanding team for fully-automatic,
safe operation in the lab
The Kjeldahl Sampler System combines the AutoKjeldahl Unit K�370 with
the Autosampler K�371. This outstanding team will help you work with high
efficiency while saving time. The sampler features an innovative samplechanging mechanism that uses steam to transfer samples to the distillation
unit.
Carefully
selected
materials
and
numerous
safety
features
ensure
optimum protection for users and the environment.
Advantages
High-quality, highly reliable
analytical results
Modular system with compact
dimensions thanks to unique sample
transfer technique
Rack with space for 20 sample tubes,
compatible with Digest System
K-437 and Digest Automat K-438
Express rack with space for
4 sample tubes
High levels of user and
environmental safety thanks
to numerous features such
as acrylic glass safety shield
(locked during process),
sample tube and collision detection
system, and high-quality materials
used in steam and transfer tubes
Enables both automatic and manual
operation by simply changing the software parameter
Transferring samples
Following sample transfer the
distillation and the titration are
➊Movable sample arm with dip tube
positioned
➋Steam generated in K-370’s steam
generator
➌Steam passes to sample tube on
K-371 via steam tube
➍Steam presses sample into dip tube
➎Sample passes through transfer
tube into K-370’s sample tube
performed. During the entire
distillation process, steam is
transferred via the K-371 to the
➊
➎
K-370’s sample tube, thus
ensuring thorough cleaning of
sample tube and transfer tube.
K-371
K-370
The complete Kjeldahl solution for a fully
automated workflow
Peripheral devices
Kjeldahl Sampler System K-370/K-371
Various peripheral devices can be
connected.
➊Autosampler K-371 for automatic
sample changing
➋Digest Automat K-438 for
controlled, documented digestion
➌Balance for determining and
automatically transmitting the weight
of the sample
➍PC for data transfer and backup
purposes
➎Printer with PCL3 support
➏External PC keyboard (US, CH)
or barcode reader
➌
➊
➍
➋
➎
➏
Automatic sample changing of 20 samples
Straight forward data transfer to PC (data can be read, e.g. in MS Excel)
Automatic transmission of weight when connecting a balance
Digestion procedure, e.g. temperature profile of the K-438 can be
monitored and stored on the K-370.
Applications for a wide range of industries
The K-370 allows to work in accordance
with official methods such as AOAC,
EPA, DIN, etc.
Kjeldahl nitrogen and protein in food,
beverages and feed
Devarda nitrogen in fertilizers and soil
samples
TKN (Total Kjeldahl Nitrogen) and
Ammonia in waste water, lake water
and sludge
TVBN (Total Volatile Basic Nitrogen) in
fish and seafood
Kjeldahl nitrogen in chemicals and
pharmaceuticals
Order information
Order no.
AutoKjeldahl Unit K-370 (standard)
Complete with steam generator, integrated titrator, pH electrode, stirrer, pair of glass tongs, calibration solutions, sample
tube, connecting hoses and mains cable. Includes four 10-liter
tanks.
43100
Autosampler K-371 Autosampler including safety shield, rack (space for 20 sample
tubes), express rack (space for 4 sample tubes), drip tray, steam
and transfer hoses, sample tubes and mains cable.
43700
AutoKjeldahl Unit K-370 (prepared):
Same as AutoKjeldahl Unit K-370 (standard), but fully prepared
for optional use with the Autosampler K-371. Includes two
10-liter and two 20-liter tanks.
43110
Kjeldahl Sampler System K-370/K-371
Complete system for combined operation, comprising the two
components: AutoKjeldahl Unit K-370 (prepared) and Autosampler K-371.
43120
Upgrade kit
Contains all parts required to upgrade an AutoKjeldahl Unit
K-370 (standard) to the prepared version for the ability to add
the Autosampler K-371.
43140
Accessories for AutoKjeldahl Unit K-370
300 ml sample tubes (set of 4) 500 ml sample tube
Temperature sensor
External PC keyboard (US)
External PC keyboard (CH)
Tanks:
10 l: chemicals/waste
20 l: chemicals/waste
Order no.
37377
26128
43369
31456
31457
43468/43470
43469/43471
Tanks with level sensors:
10 l: chemicals/waste
43472/43474
20 l: chemicals/waste
43473/43475
External dosage device, 115 V
External dosage device, 230 V
Cable K-370/external dosage device
IQ/OQ-Set K-370 (en)
IQ/OQ-Set K-370/K-371 (en)
Accessories for Autosampler K-371
Stand for rack
Retainer plate, (holds tubes firmly in rack
for machine-washing)
43367
43596
43443
11055726
11055727
38639
38559
AutoKjeldahl Unit K-370
Mains voltage
230 V ± 10%
Frequency
50/60 Hz
Power consumption
2200 W
Current consumption (230 V)
9.5 A
Weight
24 kg
Dimensions ( W x H x D)
455 x 660 x 400 (405) mm
Interfaces
RS 232/Centronics
Recovery Rate
≥ 99.5%
Reproducibility (RSD)
≤ ± 1%
Detection limit
≥ 0.1 mg nitrogen
Autosampler K-371
200–230 V
50/60 Hz
120 W
500 mA
42 kg (without sample tubes)
514 x 658 x 590 mm (working position)
514 x 923 x 590 mm (ready position)
RS 232
BÜCHI Labortechnik AG
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Schweiz
T +41 71 394 63 63
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buchi@buchi.com
www.buchi.com
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094090 en 1005/ Technical data subject to alterations / Quality System ISO 9001
Technical data
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