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Dual Furnace Models M17705, N17706 & 17707 Iss.09 – 12/14
CONTENTS
GUARANTEE ................................................................................................................................................................ 3
EMC INFORMATION .......................................................................................................................................... 4
ELECTRICAL SAFETY .......................................................................................................................................... 4
HEALTH AND SAFETY INSTRUCTIONS ................................................................................................................... 5
DUAL FURNACE CERTIFICATE OF TEST ................................................................................................................. 6
UNPACKING ................................................................................................................................................................ 7
SAFETY ......................................................................................................................................................................... 8
CAUTIONARY NOTE .............................................................................................................................................. 8
THIS EQUIPMENT MUST BE EARTHED ................................................................................................................ 8
FUSE AND NEUTRAL LINK REPLACEMENT ........................................................................................................ 8
INTRODUCTION ........................................................................................................................................................ 9
THE 3 DUAL FURNACES .......................................................................................................................................... 10
MODEL 17707 ........................................................................................................................................................ 10
MODEL 17706 ........................................................................................................................................................ 10
MODEL 17705 ........................................................................................................................................................ 10
OPERATIONAL CONVENIENCE ............................................................................................................................. 11
ACKNOWLEDGEMENT ............................................................................................................................................ 12
COMMISSIONING ..................................................................................................................................................... 13
MODEL 17707 WATER HEAT-PIPE FURNACE ........................................................................................................ 14
FINAL PART OF THE COMMISSIONING INSTRUCTIONS ................................................................................ 14
NEXT GENERATION CALIBRATION APPARATUS FOR INDIUM AND TIN FIXED POINTS ............................. 15
INTRODUCTION .................................................................................................................................................. 15
DESCRIPTION ........................................................................................................................................................ 15
METHOD OF OPERATION ................................................................................................................................... 15
SPECIFICATION ........................................................................................................................................................ 16
HOW TO ORDER .................................................................................................................................................. 16
THE POTASSIUM HEAT-PIPE FURNACE, MODEL 17706 ...................................................................................... 17
FINAL PART OF THE COMMISSIONING INSTRUCTIONS ................................................................................ 17
NEXT GENERATION CALIBRATION APPARATUS FOR ZINC, ALUMINIUM AND SILVER FIXED POINTS ..... 18
INTRODUCTION .................................................................................................................................................. 18
DESCRIPTION ........................................................................................................................................................ 18
METHOD OF OPERATION ................................................................................................................................... 18
SPECIFICATION ........................................................................................................................................................ 19
THE SODIUM HEAT-PIPE FURNACE, MODEL 17705 ............................................................................................ 20
FINAL PART OF THE COMMISSIONING INSTRUCTIONS ................................................................................ 20
NEXT GENERATION CALIBRATION APPARATUS FOR ALUMINIUM, SILVER AND COPPER FIXED POINTS 21
INTRODUCTION .................................................................................................................................................. 21
DESCRIPTION ........................................................................................................................................................ 21
METHOD OF OPERATION ................................................................................................................................... 21
SPECIFICATION ........................................................................................................................................................ 22
ELIMINATING CONTAMINATION DURING THE CALIBRATION OF HIGH TEMPERATURE THERMOMETERS23
ANNEALING COMPONENT OF THE DUAL FURNACE SHOWING AIR FLOW.............................................. 23
MAINTENANCE ........................................................................................................................................................ 25
SPARE PARTS ............................................................................................................................................................. 26
CELL HANDLING ...................................................................................................................................................... 27
CELL KIT................................................................................................................................................................. 27
THERMOMETRIC FIXED POINTS; A TUTORIAL .................................................................................................... 31
DEFINING FIXED POINTS AND RELATED DATA ................................................................................................. 33
GENERAL NOTE ON ISOTECH METAL FREEZE POINT CELLS ........................................................................... 34
PRECAUTIONS TO PREVENT DEVITRIFICATION OF QUARTZ ENVELOPES .................................................... 35
GENERAL COMMENT .............................................................................................................................................. 36
ADDITIONAL SERVICES AND INFORMATION ...................................................................................................... 37
FIGURE 1; SECTION THROUGH DUAL FURNACE ............................................................................................ 38
FIGURE 2; SEALED METAL FREEZING POINT CELL .......................................................................................... 39
FIGURE 3; SEALED METAL FREEZING POINT CELL BODY DIMENSIONS ...................................................... 40
