NEW High Precision Thermal Demagnetizers (paleomagnetic furnaces)

MMTD80A

MMTD80A (80 sample thermal demagnetizer). This advanced microprocessor controlled thermal demagnetizer offers the following unique set of features:

  • Simple but sophisticated programmable Heat/Hold/Cool cycle, no need to manually move samples from a heating to a cooling chamber.
  • Sophisticated proportional temperature control with power indicator (not ON/OFF controller).
  • Internal calibrated solenoid for creating TRM s. Ideal for ‘double heating’ Thellier experiments.
  • 4 layer Mu-metal shields closed at ends with automatic degaussing and our special electronic activation to improve performance. Samples always in a field
  • Any orientation, because the shields are closed at one end the oven it can have a north/south or east west orientation, the field remains low.
  • Fast cycle, 80 samples to 500 deg C, 25 min hold at 500 deg C, cool to 40 deg C in less than 80 minutes, that’s an average processing speed of one sample every 60 seconds, fast enough to keep up with any magnetometer.
  • Non-magnetic and accurate thermocouples, we do not use K type thermocouples in any of our instruments as these can become inaccurate with age.
  • Ultra low thermal gradients, Maximum deviation 6 deg C at 500 deg C over full load of 80 samples, 4 deg C over central 40 samples.
  • Absolute temperature accuracy 1 deg C, resolution 0.1 deg C, maximum temperature 800oC.
  • Robust ceramic oven element and virtually unbreakable non-magnetic sample holder for long trouble free operation. Built in radiation shields for ultra low thermal gradients.
  • Controlled atmosphere sample holders supplied as standard (vacuum or inert gas).
  • Optional extra MMTDVP 2 stage vacuum pump and fittings.
  • Optional extra MMCCPSU constant current power supply for Thellier experiments, field on during both heating and cooling.
  • Power consumption 2.8 KVA.
  • Battery backup, If mains electricity fails the system remembers the programme sequence and the programme continues once power is restored.
  • Safety Features, no power to oven element when samples are inserted/removed, Software over temperature trip isolates oven and cools, mechanical over temperature trip cuts power to oven. Second ‘policeman’ controller monitors oven and cuts power if all other systems fail.
  • 3-year parts and labour warranty.


MMTD24, A 24 sample economy Thermal Demagnetizer for palaeomagnetic and palaeointensity work

  • Robust ceramic oven element and virtually unbreakable non-magnetic sample holder for long trouble free operation.
  • Simple but sophisticated programmable Heat/Hold/Cool cycle, no need to manually move samples from a heating to a cooling chamber.
  • Sophisticated proportional temperature control with power indicator (not ON/OFF controller).
  • Internal calibrated solenoid for creating TRM s. Ideal for ‘double heating’ Thellier experiments.
  • 4 layer Mu-metal shields with our special electronic activation to improve degaussing and performance. Samples always in a field
  • Ultra low thermal gradients, Maximum deviation 8 deg C at 500 deg C over full load of samples.
  • Absolute temperature accuracy 1 deg C, resolution 0.1 deg C, maximum temperature 800 deg C. repeatability 0.1 deg C, ideal for Thellier experiments as well as conventional thermal demagnetisation.
  • Optional extra MMTDVP 2 stage vacuum pump and fittings, vacuum quartz sample holder.
  • Optional extra MMCCPSU constant current power supply for Thellier experiments, field on during both heating and cooling.
  • Power consumption 2.7 KVA.
  • Battery backup, If mains electricity fails the system remembers the programme sequence.
  • Safety Features, no power to oven element when samples are inserted/removed, Software over temperature trip isolates oven and cools, mechanical over temperature trip cuts power to oven.
  • 3-year parts and labour warranty.


MMTDSC

MMTDSC Super Cooled Thermal Demagnetizer for speed and advanced experiments

  • Cryocooler for super fast cooling, the MMTDSC can cool samples from 700 deg C to below room temperature in 19 minutes. A thermal cycle heat to 500 deg C hold for 15 minutes and cool to 30 deg C takes just 40 minutes, ideal for Thellier experiments where speed and repeatability are important.
  • Three cooling rates for cooling rate experiments, super fast with cryocooled air, fast with normal temperature air and slow (24 hours) natural cooling.
  • Robust ceramic oven element and virtually unbreakable non-magnetic sample holder for long trouble free operation.
  • Simple but sophisticated programmable Heat/Hold/Cool cycle, no need to manually move samples from a heating to a cooling chamber.
  • Sophisticated proportional temperature control with power indicator (not ON/OFF controller).
  • Internal calibrated solenoid for creating TRM s. Ideal for ‘double heating’ Thellier experiments.
  • 4 layer Mu-metal shields with our special electronic activation to improve degaussing and performance. Samples always in a field
  • Ultra low thermal gradients, Maximum deviation 8 deg C at 500 deg C over full load of samples.
  • Absolute temperature accuracy 1 deg C, resolution 0.1 deg C, maximum temperature 800 deg C. repeatability 0.1 deg C
  • Optional extra MMTDVP 2 stage vacuum pump and fittings, vacuum quartz sample holder.
  • Optional extra MMCCPSU constant current power supply for Thellier experiments, field on during both heating and cooling.
  • Power consumption 2.7 KVA.
  • Battery backup, If mains electricity fails the system remembers the programme sequence.
  • Safety Features, no power to oven element when samples are inserted/removed, Software over temperature trip isolates oven and cools, mechanical over temperature trip cuts power to oven.
  • 3-year parts and labour warranty.