Thermo Scientific Heratherm OGS 100, Руководство по эксплуатации

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Product Description
Safety Devices
4-6 Heratherm Thermo Scientific
Safety Devices
The oven is equipped with the following safety features:
• a sample protection feature that safeguards the samples against destruction through
overheating in case of contoller failure;
• an overheat protection cut-out feature that shuts down the oven completely when
excessive temperatures occur in the workspace;
• dual fuses rated at 16 amperes.
Operating Environment
To ensure undisturbed operation, the ambient temperature in the operating room must be at
least 18 °C (64.4 °F). The heating system controls the temperature in the oven’s workspace
of 50 °C/122 °F up to the maximum of 250 °C/482 °F .
Sensing and Control System
The PT 100-type sensor for the control of the work space temperature and for the thermal
protection [1] is mounted in the top panel of the work space compartment.
Figure 4-5 Sensor Mounting Location - OGS Series and OMS Series
The work space temperature sensor provides the inputs to the oven’s built-in controller,
which continuously compares the measured values to the user-specified set value and adjusts
the heaters according to the result.
The unit features a thermal protection function that is factory-preprogrammed and not
adjustable. It protects the samples in the work space from overheating: Thermal protection
kicks in on a brief violation of the upper limit, based on the user-selected temperature set
value, automatically reducing the work space temperature to the user-specified set value and
allowing the heating process to continue even in case of a controller malfunction. If the
thermal protection is activated, the error message (E111) “Temperature too high” appears in
the display window and an audible alarm is sounded.