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PTB150-MAN-V14.0
PTB 150-157 Instruction Manual
6.2.5 - Heating & cooling system
Four Peltier elements provided to heating / cooling the block; this system can reach the max.
temperature of 150°C & the min. temperature of -30°C.
Bear in mind, however, that constant use at extreme temperatures reduces the life of the Peltier
elements. Limit the number of hours at which the instrument is used at maximum temperatures to
the time required by the calibration in order to prolong the life of the cells.
6.2.6 - Equalising block
The equalising block is in aluminium with the hole for the reduction insert. Holes have been made
on the reduction insert to make it possible to fit various types of probes. The function of the block
is to make uniform the temperature on calibration zone.
If you want to fit the calibrator with a block or insert with different holes we recommend that you
should contact the technical support department who will check to see if it is feasible. This will
avoid any unfortunate problems, which might arise if the wrong tolerances are used
6.2.7 - Temperature sensors
The temperature sensor used for the reading and thermoregulation is a PT100
probe; the probe
is inserted directly into the equalising block.
