30
Heating Metal Vessels and
Sand Baths
Metal vessels and sand baths cannot be heated on most
solid ceramic tops because of the tendency for the metal
and the sand to reflect heat back into the top, eventually
exceeding the maximum temperature rating for a ceramic
top, which causes it to break. Because of its advanced
electronic control, the Isotemp Advanced is capable of
precisely regulating the top plate temperature. Metal
vessels and sand baths may be heated safely without the
danger of the ceramic top breaking.
Setting the Time
Isotemp advanced provides two timer modes. One is
countdown mode. the timer function on the Isotemp
advanced can shut off heating when time is reached. To
set the time, press "TIME" key located under display. Hold
will begin to flash.Turn the knob until time shows then
press "TIME" key again.Use the knob on the front panel
to select a time. Turn the knob clockwise to increase the
time or counterclockwise to decrease the time. When
desired setpoint has been reached, press the "TIME" key
or wait 10 seconds, the time setpoint will no longer flash
indicating that it has been set.In the temperature rising
mode, when the temperature is more than 2 degree below
the temperature setpoint, the timer will start to count.In
the temperature declining mode, when the temperature
is less than 2 degree above the temperature setpoint ,the
timer will start to count. When the timer counts down to 0,
the unit will turn heating off.
Another mode is timming mode. when the display shows
"HOLD", the timer records the total running duration.
Hardware Over-Temperature-
Protection
A hardware Over-Temperature-Protection(OTP) analog
circuit is designed separately to protect unexpected
heating.
A small straight blade screwdriver can be used to adjust
the scale at right side of the unit. The protection value can
be set from 60°C to 500°C(450°C depending on models).
When the actual temperature is higher than the Hardware
OTP setting, an error message occurs and the heating
is cut off, unplug the power cord can clear the error
message.
Please notice that this function is only purposed to avoid
abnormal heating if unit is out of control. Users should
not use this function to limit the temperature in normal
applications. Refer to the section "Over-temperature Set
Point – OTP" for accurate temperature protection.
Default set is at maximum scale.
O
PERATION
Содержание Fisher Scientific HP88857290
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