Quality Profile. Centurion. Scientific Limited

Transcription

1 Quality Profile Centurion Scientific Limited

2 Preface Within the Following pages. We show what makes the Quality of our Centrifuges and why we are so successful. Not only do we use the best components encased in high strength alloys & steel, our Rotors use high quality materials too Our designs are truly modern, yet functional. We offer the Largest portfolio of centrifuges in the world. With nine ranges for your selection. Contents Page 3 TESTS Page 4 BODY Page 5 MAINS POWER Page 6 CIRCUIT BOARDS Page 7 ROTORS Page 8 REFRIGERATED Page 9 REFRIGERATED Page 10 BSI Certificate Page 11 ISO Certificate Peace of mind Strength, Lids, Lid locks and Bowls Inverter, EMC filter, Motor & Detector Types and Compliance Quality Compressor & Condensor Temperature Control Quality compliance Quality Compliance We are so sure of our quality we offer a 3 year warranty from invoiced date. 2

3 Quality Assurance tests Ambient Centrifuges. All units are tested in assembly sections. IE : Motor, Lid, Lid Locks, Board, Inverter with Emc Mains ALL units have a QA progress chart, signed and held on file. A copy is sent with your purchased unit. Before despatch, a full PAT test is actioned and filed. A Full test of all parameters and the unit run to speed with its designated rotors is done and Noise/Vibration levels checked Refrigerated Centrifuges. All units are tested in assembly sections. IE : Motor, Lid, Lid Locks, Board, Inverter with Emc Mains & Refrigeration ALL units have a QA progress chart, signed and held on file. A copy is sent with the purchased unit. Before despatch, a full PAT test is actioned and filed. A Full test of all parameters and the unit run to speed with its designated rotors is done and Noise/Vibration levels checked Centurion Scientific have a 100 Square metre test room where the temperature is held at a constant /-0. Here ALL Refrigerated centrifuges are tested and a chart sent with your purchase Conformity of -9 to +40C Conformity of control Standby, Pre mix & Run (15,000Rpm) Quality Profile 3

4 Body 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 As the centrifuge cannot be run without the lid being shut. We use the best lid locks to hold down the lid. Sensor in this lock does not allow the unit to run unless correctly closed. An emergency lid release is provided if there is a power failure. 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. 4

5 Mains Power Inverter Industrial grade - Standard to ALL models This is the high voltage power unit to the motor and is extremely important for speed control, acceleration, deceleration, vector drive for efficiency, therefore keeping the motor at its 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 EMC, our filters comply to reduce both radiated and transmitted to the correct levels as the standards set. Electrical induction motor - Standard to ALL models Manufactured by the best german motor company, reliability and longlife is a prerequisite. These motors are also standard to the centrifuge manufacturers and are used by us and all leading makers. NEW PrO-I-Bal System - Standard to ALL Made by the leading surface mount UK 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. Quality Profile 5

6 Circuit Boards ALL Circuit boards are compliant with ROHS regulationsa LED board. Display view Made by the leading surface mount UK 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. 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. 6

7 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 in the order process tested again in the designated unit purchased. Like our centrifuges, ALL are guaranteed for 3 years from invoiced date. 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. Quality Profile 7

8 Refrigerated Centrifuges All use Embraco compressors and Lueva condensers, the premium brands in Refrigeration. Both made in Europe. Centurions control of temperature is unsurpassed. By using a gas bypass valve and keeping the compressor running, we control 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 for a graphic example. Talking of graphs every refrigerated unit is tested to minimum / maximum temperature and at 40C 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 a 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 late

9 Refrigerated Centrifuges 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 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. 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. 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 to optimum 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. Please see the graph that compares our system to another brand leader. Quality Profile 9

10 Centurion Scientific Limited 10 The Old Stables, Church Farm, Stoughton, Chichester, West Sussex. PO18 9JL. United Kingdom.

11 EC Declaration of Conformity CQS (Certified Quality Systems) Ltd United Kingdom Head Office: +44(0) Registration Certificate This document certifies that the Quality Management Systems of CENTURION SCIENTIFIC LTD The Old Stables, Church Farm, Stoughton, West Sussex P018 9JL Have been assessed and approved by CQS (Certified Quality Systems) Limited to the following Quality Management Systems, standards and guidelines BS EN ISO 9001 :2008 The scope of this certification applies to the approved Quality Management Systems relating to the following activities THE DEVELOPMENT,MANUFACTURE AND SUPPLY OF LABORATORY TOP CENTRIFUGES Certificate Issued: 2nd of November 2016 Certificate No: GB Expiry Date: 1st November 2017 Should verification of the validity of this certificate be required please contact: CQS (Certified Quality Systems) Ltd United Kingdom Head Office: +44(0) On behalf of CQS (Certified Quality Systems) Limited Registration Certificate This document certifies that the Quality Management Systems of CENTURION SCIENTIFIC LTD The Old Stables, Church Farm, Stoughton, West Sussex P018 9JL Have been assessed and approved by CQS (Certified Quality Systems) Limited to the following Quality Management Systems, standards and guidelines BS EN ISO : 2012 The scope of this certification applies to the approved Quality Management Systems relating to the following activities THE DEVELOPMENT,MANUFACTURE AND SUPPLY OF LABORATORY TOP CENTRIFUGES Certificate Issued: 19th December 2016 Certificate No: MD Expiry Date: 28th February 2019 Should verification of the validity of this certificate be required please contact: CQS (Certified Quality Systems) Ltd United Kingdom Head Office: +44(0) veriftcation@cqsltd.com On behalf of CQS (Certified Quality Systems) Limited EAC19 SIC Supplementary Information CE Marking This instrument is fully guaranteed against manufacturing defect for a period of three years from date of purchase. Conform to the following Product Specifications: IEC , , IEC , EN 61010, EN , 7.5 expelled parts, BS 5724, BS 7687:2.20 BS EN , 73/23/EEC Low voltage directive EMC EU (INCLUSIVE 93/68/EEC) The product herewith complies with the requirements of the following Directives and carries the CE mark accordingly. The Low voltage Directive 73.23/EEC The EMC Directive 89/336/EEC (inclusive 93/68/EEC) EAC19 SIC 26511

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