B550 & B700 Operators Manual Isotech North America 158 Brentwood Drive, Unit 4 Colchester, VT 05446 Phone: (802) 863-8050 Fax: (802) 863-8050 Email: sales@isotechna.com Web: www.isotechna.
B550 & B700 Operator’s Handbook Table of Contents 1. INTRODUCTION................................................................................................................. 3 2. SAFETY .............................................................................................................................. 3 2.2 2.3 3. 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 4. 4.1 5. 5.1 5.2 5.3 5.4 5.5 5.6 6. 6.1 6.2 7. 7.1 7.2 8. 8.1 8.2 8.3 8.4 8.5 REMOVING THE INSERTS ........................................
B550 & B700 Operator’s Handbook 9. 9.1 9.2 9.3 9.4 SERVICE AND WARRANTY............................................................................................ 23 TECHNICAL SUPPORT ....................................................................................................... 23 RETURNED INSTRUMENTS................................................................................................. 23 DOCUMENTATION....................................................................................
B550 & B700 Operator’s Handbook 1. Introduction Automatic Systems Laboratories would like to thank you for purchasing this B series Metal Block Calibrator. The Calibrator is supplied in a fully operational state, but ASL strongly suggest that these brief operating instructions and guidelines be read before starting to use the apparatus. Should you have any difficulty understanding the instructions, or other questions regarding this Calibrator, please call our Customer Support Group. 2.
B550 & B700 Operator’s Handbook Figure 1. Model B550 with Independent Indicator vi) Do not use any liquid in the probe holes of the block. (The use of a few drops of demineralised water to improve probe/block contact when calibrating below 70°C (94°F) is permissible with great care. Do not introduce water into the Calibrator unless the block is cold, and the supply is disconnected. Drain the water by inverting the Calibrator after use. Do not boil off remaining water.
B550 & B700 Operator’s Handbook 2.3 Over temperature cut out ASL Metal Block Calibrators are fitted two independent over temperature cut outs which are operated by: a) Excessive block temperature b) Fan failure To reset the calibrator press the start switch. If the light does not go out the fault condition still exists. Allow the calibrator to cool before retrying. WARNING DO NOT hold your finger on the start switch for more than a few seconds.
B550 & B700 Operator’s Handbook 3. Setting up the Calibrator The Calibrator is designed to give the best performance when operated in a constant temperature environment without draughts. The calibrator should therefore be positioned away from air conditioners and direct sunlight. Please read Section 5 of this manual to achieve the best results from the Calibrator. 3.1 Getting Started WARNING: Ensure the correct line voltage fuse is fitted before turning on.
B550 & B700 Operator’s Handbook Auto/Manual Key Low Key High Key Function Key Figure 2.
B550 & B700 Operator’s Handbook Whilst operating, the controller will show two temperatures on the controller panel, and the supply switch will be illuminated. The temperature shown at the top of the controller display is a block temperature. At start up this can be expected to be close to room temperature unless the calibrator has been used recently. The lower of the two displayed temperatures is the controller set point. For safety, all equipment leaving the factory is set to 20°C (68°F).
B550 & B700 Operator’s Handbook The controller can be set to tune its own P.I.D parameters. This is not normally necessary except when a greatly varying load (high thermal loss to the block) occurs and the temperature stability of the block is affected.
B550 & B700 Operator’s Handbook There are two methods of tuning. Pre-tuning and self tuning, although the latter is not recommended as it can affect the stability at the resolution we are looking for:3.
B550 & B700 Operator’s Handbook Firstly the controller parameters need to be noted if they are different to the default ASL settings (for example where different P.I.D terms are used). To do this enter the "LOC" code (default 8 set by ASL)by pressing the "scroll" button and the up arrow together, the display will show "ULOC" in the lower section. Enter the LOC code using the up and down arrows and press "scroll" to accept.
B550 & B700 Operator’s Handbook 3.9 Changing to 0.1°C Resolution Operation to Change from 1°C resolution (700°C maximum temperature) to 0.1°C resolution (537°C maximum temperature). This is an operation virtually identical to changing from Centigrade to Fahrenheit where a new range of temperature measurement is chosen. See Appendix 3 for the 4 ranges suitable for the Calibrator. The controller parameters are cleared when the range is changed, so if one range can be fixed upon all the better.
B550 & B700 Operator’s Handbook 4. The Serial Interface for the controller (if fitted) The controller may be optionally fitted with an RS232 or an RS485 interface. Refer to the WEST 6100 controller manual for instructions on using the RS232/RS485. Connections for the interfaces are: RS485 “A” or XMT + terminal “B” or XMT - terminal RS232 25 Way ‘D’ type socket Pin 2 Pin 15 25 Way ‘D’ type socket Pin 5 Pin 3 Pin 2 Pin 20 Pin 7 Pin 6 CTS RxD TxD DTR GND DSR 4.
B550 & B700 Operator’s Handbook 5. Achieving the best results using your Metal Block Calibrator This section of your manual is written to help you achieve the best results from your Metal Block Calibrator. ASL has tested this product extensively and the results of these tests can be found in the appendices of this manual. Your Metal Block Calibrator is designed to provide a reference temperature of high stability under the correct operating conditions.
B550 & B700 Operator’s Handbook WARNING: Insertion of the incorrect probe type into these holes may result in inaccurate measurements and/or the probe becoming stuck in the block. In addition to the predrilled holes, ASL provides inserts which can be factory drilled to order, or drilled by our customers to accommodate different types of probe. As may be seen from the test results in Appendix 1, the temperature difference between inserts may be several tenths of a degree.
B550 & B700 Operator’s Handbook Figure 3. Recommended orientation for twin inserts. 5.5 Supply Voltage Variations As with all electrical equipment, your B series Metal Block Calibrator is designed to operate most efficiently on a stable electrical supply. Transient variations in supply voltage will vary the quantity of heat output by the Heating element, and may adversely affect the temperature stability of the Calibrator.
B550 & B700 Operator’s Handbook “B” or XMT - terminal RS232 TxD RxD GND CTS internally RTS DSR internally DTR Pins 14, 15 25 Way ‘D’ type socket Pin 2 Pin 3 Pin 7 Linked Pin 5 Pin 4 Linked Pin 6 Pin 20 6.1 Factory Default Settings The Independent Indicator is factory set to 9600 baud, 8 bit, no parity and 1 stop bit. 6.2 Linearising the Independent Indicator The following instructions tell you how to linearise the Independent Indicator.
B550 & B700 Operator’s Handbook The actual readings (Indictor reading) are ‘IN 01’ to ‘IN 17’. The system is then calibrated a second time and the initial errors between the test temperature and the Block -II Independent Indicator should be reduced. Example: 1st calibration results at 5 points: Test Temperature Indicator Reading 49.861 50.2 100.012 100.1 249.102 249.2 419.875 420.2 549.890 550.1 Enter the data pairs as below: IN 01 = B550-14-002 50.2 OU 01 = 49.861 IN 02 = 100.
B550 & B700 Operator’s Handbook AL1 1 SEtUP F1 B550/700 Set-up Procedure F2 2 InPUt AL1 8 To next section of menu F1 F2 3 tHEr F2 F2 select AL1 4 Type F2 5 Pt100 F1 F1 F2 select 6 dEG F2 7 0.1C F1 End AL1 9 dISPL AL1 F2 F2 F1 10 dECPO F2 11 1.9.9.9.9 select dp 1999.9 Key press Display Figure 4. Independent Indicator initial set up.
B550 & B700 Operator’s Handbook AL1 F1 1 SEtUP 2 InPUt F2 F1 3 dISPL 5 CSLIn 4 AdC F1 F1 F2 F2 AL1 End 7 FUn F2 On F1 AL1 F1 9 POInt F2 F2 10 In 1 F2 F1 F2 11 OU 1 AL1 F1 Actual reading F2 Expected reading to required amount of points F2 12 In 17 F2 F1 Actual reading F2 13 OU 17 F2 Expected reading Key press Display Figure 5. Independent Indicator Calibration Procedure.
B550 & B700 Operator’s Handbook 7. Specifications 7.1 General Model Well Depth (mm) Well Dia. (mm) Insert Length (mm) Temperature range in normal ambient of 22 °C Stability B550 155 2 x 19 150 +35 °C to +550 °C ±0.05 °C +95 °F to +1022 °F) ±0.09 °F +50 °C to +700 °C ±0.05°C +122 °F to +1292 °F) ±0.09°F B700 150 4 x 6.35 N/A 155 2 x 18 150 150 4 x 6.35 N/A 7.2 Environment Operating Temperature: maximum.
B550 & B700 Operator’s Handbook 8. Cleaning and Maintainance 8.1 Cleaning Make sure the Block Calibrator is turned off and unplug the mains supply cable. Clean the outside of the instrument with a soft, clean cloth dampened with mild detergent. Do not allow water to enter the instrument. WARNING Never use alcohol or thinners as these will damage the instrument. Never use a hard or abrasive brush. 8.
B550 & B700 Operator’s Handbook 8.5 Periodic Maintenance WARNING The block calibrator should be checked every 2 years to have the safety cut out tested. Consult your ASL offer a comprehensive service for all its products. distributor for details. Alternatively, a technical procedure for verifying operation of the cutout is available from ASL’s customer support group. This operation should only be carried out by a suitably qualified engineer. 9.
B550 & B700 Operator’s Handbook iii) The name of your purchasing and technical contact. iv) A brief fault report. 9.4 Repair Quotations We shall be pleased to advise estimated repair costs upon receipt and initial inspection of returned goods.
B550 & B700 Operator’s Handbook 10. Appendix 1 Performance charts The graphs above, Figure 7 at 125°C and Figure 8 at 200°C, show the vertical gradient of temperature in the B550 block. The PRT used was the T100-250. The resulting temperature gradient is exaggerated by the insertion depth of the PRT itself to the point where the detector within the PRT is near the top surface of the block. The stem losses of the PRT will increase as more surface area is expossed to the air.
B550 & B700 Operator’s Handbook 11. Appendix 2 Wiring connections for DIN connector Figure 9. Wiring Diagram for Independent Indicator.
B550 & B700 Operator’s Handbook 12.
B550 & B700 Operator’s Handbook WARNING Read section 3.5 before altering the controller’s parameters, in particular the setpoint limits. Exceeding the maximum temperature may cause permanent damage.
B550 & B700 Operator’s Handbook NOTES B550-14-002 29 Issue 7
