Page 14 of EchoTerm Digital and Analog Chilling and Heating Laboratory Equipment by Torrey Pines Scientific

digital hot plates and stirring hot plates the custom lcd displays both the plate and probe target and actual temperatures stirring speed count down timer in hours minutes and seconds to 99 hours with user settable auto-off that will set all functions to zero at the end of a count down timed event and temperature ramping used to increase or decrease temperature at a given rate ramp rates can be set from 1șc to 450șc per hour the hs30 will stir from 100 to 1500 rpm while controlling the setting to ±10 rpm the stirrer motor speed is optically sensed and then controlled by the microprocessor in the unit regardless of changes in sample viscosity the unit features electronic calibration that is set at the factory and traceable to nist and easily reset by the user to local standards if wanted or needed an rs232 i/o port for controlling the unit or for collecting data is provided the hs30 is available in 100 115vac 50/60hz 8 amp or 230vac 50/60hz 4 amp models it comes complete with sixfoot 3-wire grounded ac line cord for the country of use user s manual and full 12 month warranty it measures 15.75 40.01 cm deep by 9.125 23.18 cm wide by 4.75 12.07 cm high and weighs 12 pounds 5.4 kg it is ul csa and ce compliant digital hot plate stirring hot plate accessories hs30-600 ­ probe immersion 6 stainless steel platinum rtd 3 lead hs30-601 ­ probe immersion 10 stainless steel platinum rtd 3 lead hs30-602 ­ probe immersion 6 teflon platinum rtd 3 lead hs30-603 ­ probe immersion 6 glass platinum rtd 3 lead hs30-700 ­ temperature probe calibration kit above is a close-up of the membrane switch and display to set a solution temperature press the solution icon and then the up arrow until the desired temperature is displayed the instrument does the rest plate temperature temperature ramping stirring speed and timer are just as simple to set stainless steel probes are fine for most applications for aggressive solutions teflon is recommended as long as solution temperatures are below 250șc for higher temperatures with aggressive solutions use the borosilicate glass probe models hp30 hp30a digital hot plates the digital hot plates models hp30 and hp30a are identical with the exception of the material of the heater top the hp30 has a solid ceramic heater top and the hp30a has a milled-flat cast aluminum heater top the hp30 will heat to 450șc while the hp30a will heat to 400șc the hp30 with ceramic top is recommended for use with aggressive chemicals and high temperatures the hp30a is recommended for use with any solids placed directly on the heater top the hp30a s aluminum top heats slower than the ceramic top but it also heats much more evenly across the surface it is milled flat corner to corner to better than 0.01 0.254 mm both units are accurate to 1 over their entire range and will hold a set temperature to 1șc the ceramic top will heat to 450șc in about 2 minutes while the aluminum top will heat to 400șc in about 10 minutes both use 600 watts of heater power they both have platinum rtd sensors under the plate surface for sensing the plate temperature that is tied together with a pid control loop specific for the heater top being used both have a probe jack on the rear of the unit for an accessory probe that is used to sense solution temperatures they both have a specific pid control loop for controlling solutions in a vessel the custom lcd on both displays the plate and probe target and actual temperatures temperature ramp and count down timer with alarm and user settable auto-off they feature electronic calibration that is set at the factory and traceable to nist calibration easily can be reset by the user in the field to local standards if wanted or needed an rs232 i/o port is provided for collecting data or for controlling the units from a computer the hp30 and hp30a are available in 100 and 115vac 50/60 hz 8 amp and 230vac 50/60 hz 4 amp models they come complete with 6-foot 3-wire grounded ac line cord for the country of use user s manual and full 12 month warranty they measure 15.75 40.01 cm deep by 9.125 23.18 cm wide by 4.75 12.07 cm high they weigh 12 pounds 5.4 kg they are ul csa and ce compliant above is the milled flat cast aluminum heater top for the hp30a this top heats very evenly and is recommended for heating solids directly 14

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