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Solutions for Primary & Secondary Laboratories

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Solutions for Primary & Secondary Laboratories 1 üThe Source for Calibration Professionals Solutions for Primary & Secondary Laboratories Temperature Calibration Equipment & Services - Required calibration point for range Copper Freeze 1084.62ºC Point Cells COPPER FREEZES 1064.180ºC GOLD FREEZES Silver Freeze Point Cells 961.7800ºC Aluminium Freeze Point Cells 660.3230ºC ITL 17705 or 17702C or 17705 ITL hermometer 962 & 96178 & 962 hermometer T Zinc Freeze Point Cells 419.5270ºC ITL 17702B or ITL 17706 ITL or 17702B ITL Tin Freeze Point Cells 231.9280ºC 465 Indium Freeze 156.5985ºC hermocouple Point Cells ITL 17707 or 17702A or 17707 ITL T hermometer 909 & 670 & 909 hermometer T ITL 17701 ITL ITL 17703 ITL emperature Standard Platinum Resistance Resistance Platinum Standard emperature T Gallium Melt Point Cell & Apparatus 29.76460ºC Gold / Platinum Platinum / Gold High Triple Point Water Cell & Apparatus 0.010000ºC Mercury Triple Point Cell & Apparatus -38.83440ºC Boiling Point -189.3442ºC Standard Platinum Resistance Resistance Platinum Standard Comparator for TRIPLE POINT OF ARGON Argon, Nitrogen or Oxygen -218.7916ºC TRIPLE POINT OF OXYGEN -248.5939ºC TRIPLE POINT OF NEON -259.3467ºC TRIPLE POINT OF HYDROGEN -273.1500ºC Isotech ITS-90 ABSOLUTE ZERO ITS-90 Metrology Temperature Acceptable Furnaces Scale Thermometer Ranges For full details, contact Isothermal Technology Limited, Pine Grove, Southport, Merseyside PR9 9AG England Telephone +44 (0)1704 543830 Fax +44 (0)1704 544799 Email [email protected] Web www.isotech.co.uk Contents Metrology Instruments .........................................Inside Front The Best Comparison Calibration Equipment ........... 54 - 55 Introduction .................................................................. 4 - 5 Nitrogen Boiling Point Apparatus .................................. 57 Model 461 Simple Liquid N2 Apparatus ........................ 58 Primary ITS-90 Standards Model 459 Cryostat ..................................................... 59 The Jarrett-Isotech Water Triple Point Cells ............... 6 - 8 Isis -100°C Dry Block .......................................... 60 - 61 Maintenance Bath - Water Triple Point ............................ 9 915 Parallel Tube Stirred Liquid Bath .................... 62 - 64 Ice Mantle Maker - Water Triple Point ........................... 10 Immersion Depth............................................................... 65 Gallium Cell - Sostmann-Isotech .......................... 11 - 12 Orion 796 Stirred Liquid Baths ............................. 66 - 67 Gallium Apparatus ....................................................... 13 Hydra 798 Stirred Liquid Baths ............................ 68 - 70 The Isotech Mercury Cell ............................................. 14 813 Stirred Ice / Water Bath ......................................... 71 Mercury Triple Point Apparatus .................................... 15 Model 820 Large Volume Calibration Bath .................... 72 The Best Primary Standards for your Laboratory ............. 17 Liquid Selection Guide ....................................................... 73 Fixed Point Cells - Sealed and Open ...................... 18 -19 Model 875 Fluidized Calibration Bath .................... 74 - 75 Model 877 Thermocouple Calibration Furnace ...... 76 - 77 International Traceability ................................................. 20 Furnace Selction Guide ...................................................... 21 Points on the Temperature Scale (POTTS) Introduction ... 79 Dual and Heat Pipe Furnaces ............................... 22 - 23 Slim Fixed Point Cells - Sealed ............................. 80 - 81 Low Temperature Furnace ............................................ 24 Europa-6 ............................................................. 82 - 83 Medium Temperature Furnace ...................................... 25 Oceanus-6 .......................................................... 84 - 85 3 Zone High Temperature Furnace ................................ 26 Medusa 510 and Medusa 511 ............................. 86 - 87 Annealing Furnace ....................................................... 27 Oberon ........................................................................ 88 POTTS Ease of Use ........................................................... 89 Introduction to SPRTs and Standard Thermocouples ......... 29 670 Family Primary SPRT .................................... 30 - 31 Introduction to Temperature Calibration Software ........... 90 Model 96178 Silver Point SPRT ........................... 32 - 33 Icarus Calibration Software .......................................... 91 909 Family Working SPRTs .................................. 34 - 35 NotePad Calibration Software........................................92 Standard Thermocouple .............................................. 36 I-Cal Easy Calibration Software ............................ 93 - 94 Platinum / Gold Thermocouple ..................................... 37 Calibration Services .......................................................... 95 Guide to Precision Thermometers and accessories ... 38 - 39 microK Precision Thermometer ............................ 40 - 42 microsKanner Channel Expander .................................. 43 TTI-22 True Temperature Indicator ....................... 44 - 45 TTI-7 Plus PRT & Thermocouple Thermometer .... 46 - 47 8 Way Selector Switch ......................................... 48 - 49 Model SRA & SRB AC/DC Standard Resistors .............. 50 Model 455 Resistor Maintenance Bath ......................... 51 Model 456 Temperature Controlled AC/DC Resistors .... 52 The company is always willing to give technical advice and assistance where appropriate. Equally because of the program of continual development and improvement, we reserve the right to amend or alter characteristics and design without prior notice. This publication is for information only. Products in this catalogue are all Compliant Introduction Primary & Secondary Laboratory Equipment ...our knowledge, product quality and integrity are the reasons for buying from Isotech In our catalogues, datasheets and Selecting the best equipment Equipment Required website you will not find unsubstantiated for a Primary Temperature Can be grouped under four headings: claims by our own scientists (although Laboratory they are as good as the best), you will 1. An accurate electrical measuring find the results of independent system. The Purpose international intercomparisons done by 2. A number of ITS-90 fixed point cells. such organisations as BIPM and NIST. The purpose of a primary laboratory 3. Apparatus to melt, freeze and realising part of ITS-90 is to calibrate maintain the cells. Where we have to summarise we SPRTs at fixed temperatures, by 4. Stable thermometers to monitor the provide references to the appropriate comparing their resistance to a fixed cells. document for you to download and and known resistance. read in full. When selecting the equipment for the Uncertainty Limits laboratory look at performance, Our uncertainties of calibration and uncertainties and price. procedures have all been scrutinised For fixed resistors the limit is about and agreed with UKAS, who are party ±0.05ppm. The Electrical Measuring to the ILAC-MRA. For 6N purity metallic cells the limits System Each year we are audited by UKAS are (ref CCT/2000-13 p.5) who check our electrical and thermal Hg ±0.2mK The Bridges standards, examine and witness our Ga ±0.1mK procedures and question our A ratio bridge that compares a In ±0.5mK uncertainty spread sheets. temperature controlled stable fixed Sn ±0.3mK resistor to the SPRT under test is ideal. This ensures a continuous improvement Zn ±0.5mK in our services to you, our customer. Bridge linearity, noise and stability are Al ±0.7mK the main things to consider. The Our electrical standards are certified by Ag ±1.1mK uncertainty should be of the order of NPL, the UK’s National Laboratory. 0.1ppm. For SPRTs ±0.5mK (non-uniqueness of Our fixed points from argon through to ITS-90 between fixed point of water The Isotech microK 100 is the ideal silver have been intercompared at NIST and gallium), ±0.5mK (2 oxide state). solution, it contributes just 0.1ppm to in the US to their references. the measurement uncertainties with When selecting equipment the Our UKAS certificates are presented in noise and linearity and uniquely it is uncertainties should match the above. a form which makes them instantly drift-free. It has input 3 channels This is because uncertainties are useful. Our staff of experts are extendable to over 90 with combined using root sum of squares. available to help with your enquiries So if an uncertainty is much larger and problems. than the above it will dominate the rest, if it is very small it becomes insignificant. http://www.isotech.co.uk 4 | SOLUTIONS FOR PRIMARY & SECONDARY LABORATORIES Introduction [continued] microsKanners and with no mechanical g Open quartz g Open metal clad Procedures and switches, relays, potentionmeters or g Sealed quartz g Sealed metal clad Uncertainties moving parts is the most reliable You will find full details on the following product available. pages. One of the great things about thermal metrology is that there is no approved Fixed Resistors See Isotech’s technical library on the way to calibrate. One of our staff was website for a comparison of our UKAS The best resistors are made for us by asked by a UKAS Auditor how long it results of quartz clad and metal clad Tinsley and we can UKAS certify
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