Quality - Centurion Scientific Global

Centurion
Scientific Limited
“Making Science Look Good”
Quality Profile
Within the following pages, we show what makes up the quality of our centrifuges and why we are
so successful.
Not only do we use the best components encased in high strength alloys and steel, our rotors are the
best quality too.
Our designs are truly modern, yet functional offering a portfolio of 10 ranges for your selection.
We are so sure of our quality we offer a 3 year warranty from invoiced date.
The sections flow as follows
•
BODY
Strength, lids, lid locks and bowls
•
MAINS POWER
Inverter, EMC Filter, Motor & detector
•
CIRCUIT BOARDS
Types and compliance
•
REFRIGERATED CENTRIFUGES
Summary
•
REFRIGERATED CENTRIFUGES
Graphical
•
ROTORS
Summary
•
OUR FACILITIES
Images
Preface
ISO Certification
Barrier ring - Standard to ALL models
This gives strength beyond the bowl for safety and
body rigidity. In the unlikely event of a rotor explosion
all fragments (which, with high g-force may weigh
as much as 1-3 tons!) will be contained safely within.
The remainder of the box is made from a mixture of
steel and aluminium. NO plastics here, solid metals,
but with no sharp edges for those rubber glove users.
Gas or springs - Standard to ALL models
These support the 3 mm steel and 12 mm
polypropylene lid from falling forward onto your hand .
Quality german lid locks -Standard to ALL models .
Stainless steel bowl - Standard to ALL models .
All our bowls are made from the best quality stainless
steel and are batch tested for corrosion with a 25 %
salt solution for 24 hours. The section is 2.5 - 3mm and
is much thicker than any bowl used by others.
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Body
As the centrifuge cannot be run without the lid being
shut. We use the best lid locks to hold down the lid.
The sensor in this lock does not allow the unit to run unless
correctly closed. An emergency lid release is provided
to use in the event of a power failure.
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Industrial grade inverter - Standard to ALL models
This is the high voltage power unit to the motor and is extremely
important for speed control , acceleration, deceleration and vector
drive for efficiency, therefore keeping the motor at it’s best and
running cool.
The type used is by the leading inverter company in the world and
is normally used for industrial and much harder task use than our
needs.
The reliability is exceptional.
EMC filter - Standard to ALL models
Centurions own filter is made by a well known company specially
for us. To comply with one of the CE requirements, our filters
comply to reduce both radiated and transmitted EMC to the correct
levels as the standards set.
Electrical induction motor - Standard to ALL models
Mains Power
Manufactured by the best german motor company, reliability and
longlife is a prerequisite. These motors are standard to our entire
range and are also used by other leading manufacturers.
Imbalance, tachometer - Standard to ALL 2015 Models
Made by the leading UK surface mount company. This original and
inventive unit pushes the boundaries of imbalance detection. Two,
three axis sensors are used , all three axis are in play . Z axis for
correct bench use, making sure it is level and correction for X and Y
which are used for both out of balance and tube ruptures at speed.
All axis are in use giving six possible levels for maximum safety and
motor longevity.
All shut down the centrifuge at its maximum braking ,controlling and
stopping fast, the rotor.
ALL Circuit boards are compliant with ROHS regulations
LED board. Display view
Made by the leading UK surface mount company. This is a derivative of our
long term board used over the past 25 years. However surface mount,
smaller components, the latest processor and substantially higher memory
means more features, increased data available for rotor needs and processing.
LEDs are bright blue for clarity.
ALL circuit boards have our unique test system as standard specially for your
Service department.
A simpler type of this board is also used in our education and veterinary types.
LED board - Rear view
Rear section showing our easy and simple connections. Four way for the lid
lock and sensor.
Ten way for the tachometer,imbalance and rotor detection.
Refrigerated units have a two way for temperature sensing.
Feature count is high with 10 acceleration and deceleration rates
with10 memory Program in Speed or Rcf G force too.
Circuit Boards
LCD board - Display.
Bolymin best quality 125 x 95 mm display size , blue on white touch screen.
Adjustable contrast and excellent viewing angle .
Standard test features for your service department.
LCD board - Rear view
Again a simple connection set;
Four way for the lid lock and sensor
Ten way for the tachometer, imbalance and rotor detection.
Six way for the temperature sensing.
Feature count is high with 10 acceleration and deceleration rates with108
memory.
Program in speed/Rcf G force or our unique W2t as used in ultra centrifuges.
Refrigerated Centrifuges.
ALL of our refrigerated centrifugesuse Embraco compressors and Lueva condensers, the premium brands
in refrigeration.
Both are manufactured in Europe.
Refrigerated Centrifuges
Centurions’ control of temperature is unsurpassed .By using a gas bypass valve and keeping the compressor
running, we control the temperature to levels beyond our competitors who simply turn the compressor on and
off. Our method saves precious electricity and prolongs the compressor life. See refrigerated manuals overleaf
for a graphic example. Talking of graphs every refrigerated unit is tested to minimum / maximum temperature
and at 4°C with a high speed rotor. A copy is sent with every unit to show its conformity.
ALL use high quality copper tube around the bowl packed extremely tightly and heat compound added. This
“heat exchanger” is incredibly efficient, and specific length capillary tube is used thereafter.
The controlling solenoid is mobilised by a solid state relay, which in turn is controlled by our state
of the art circuit board and is tuned by multi layer PID software.
As in ALL our ranges, a barrier ring is used, the same high quality german motors, same Industrial grade
Inverters, best quality lid locks and the bodies are made from a mixture of aluminium & steel.
Our latest imbalance detection system will be fitted in early 2015
Temperature control
At Centurion, we have taken temperature control seriously. We keep the refrigeration unit in
the refrigerated centrifuges running constantly, as this not only gives the compressor a longer
and more reliable life, but stops the constant surges of power. Due to the fact that the refrigeration
unit is running constantly it is quite usual to see ice in the chamber even at above 0°C
temperatures.
Refrigerated Centrifuges
To maintain the temperature, we have a highly efficient bypass solenoid which feeds hot gas
from the compressor to the system, via a highly accurate controller system (PID controller,
which calculates and manages the temperature). By running both in conjunction with each other
gives better overall temperature control, achieving the desired set temperature.
Imagine using a shower: you turn on the both the cold and hot water, adjusting to suit your
desired temperature. You would not want to use one where you had to stand under the cold
water, then the hot, then the cold in order to regulate the temperature.
Please see the graph that compares our system to another brand leader.
Centurion has a set temperature of 3°C, and our competitor of 4°C. This allows us to separate
the target areas, to show how each machine regulates the temperature. Both refrigeration units
use the same air probes, temperature units, and have the probes set at the same distance from
the rotor, and finally, the correct vertical distance, optimum to the tube area.
But as you can see, we control to 0.3°C, whereas our competitor controls it to 3°C. The
Centurion’s control is unsurpassed, and our competitor’s, which all use the same method
of turning the compressor on and off, is shown to have very poor control.
Rotors
Highest quality materials are used from Polypropylene,
which has incredible chemical resistance, Delrin for our
small rotors, which has high strength and Aircraft grade
HE15 Aluminum for high speed and large rotors, double
anodised for resistance.
All rotors are checked via our own balance system
derived from our imbalance detection circuit and
adjusted accordingly. Retested , then during the order
process tested again in the designated unit
purchased.
Like our centrifuges, ALL are guaranteed for 3 years
from invoiced date.
Rotors
A range of Reducers are available for the Fixed angle
rotors and a huge range of adaptors available for the
swing out rotors. Special tubes can be catered for under
application
Our Manufacturing Facility
Our manufacturing facility
is based in Bosham, West Sussex.
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Our Logistics Dept. & Offices
Our Global Office & Logistics
Department are based in
Stoughton, West Sussex
Our Future
Due to Centurion Scientific's impressive growth and expansion over the past few years, we have out
grown our current three buildings.
We are proud to announce the upcoming instigation of building works on our new state of the art facility.
We are very excited about this move, which allow us to grow further. We look forward to inviting you
to visit us here when it is complete, for a tour and product training.
Our Company
Our facility will be situated in the small & picturesque coastal town of Selsey. Situated just 12 miles
south of Chichester and 60 miles south of London, our facility will be accessible by major routes, and
within easy travelling distance of a City centre and our Capital.
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MADE IN BRITAIN
DISTRIBUTED WORLDWIDE
Please visit
www.centurionscientificglobal.com
to view our range