3.2.1. Environmental Conditions: The control cabinet placed in a room with air conditioning.
tropical climate, sea, explosive atmosphere (for equipment installed outdoors);
Temperature: 21.5 ° C ~ 50.0 ° C [outdoor];
18.0 ° C ~ 26.0 ° C [in rooms with air conditioning];
Humidity: 56% ~ 100% [outdoor];
50% ~ 80% [in a room with air conditioning degrees];
Barometric pressure: 996 mbar ~ 1022.2 mbar;
The highest wind speed (lasts for 3 seconds): 57.4 m / s;
All equipment and accompanying spare parts must conform to the requirements Environmental mentioned above.
3.2.2. Technical requirements:
Control cabinet heater fuels used to control, maintain the output temperature of the airflow over the heater from 50 to 54ºC. When there is no flow through the heater, flow switch (flow switch) the impact of input controller 988. Series 988 Series Controller will signal put the heater on standby, set the temperature of the heater up @ 100ºC. Install in standby avoid fusing work at full load when starting with airflow in heater and avoid gas line starts out smaller air heater with temperature requirements of the technology, in a short time average gas exit temperature is @ 100ºC has been preinstalled on standby. The temperature of the air flow in the heater quickly lowered the set temperature, the controller Series 988 will maintain output airflow temperature setpoint at 50 to 54ºC.
The Series 988 temperature controller is configured Figure to control temperature according to PID mode for precise output temperature. PID control settings temperature control of cylinders with the highest temperature is @ 100ºC. Output air temperature of 50 to 54ºC place. Standby settings are @ 100ºC. All modes are changed during operation.
The controller limits the current limit signal received from Series 92 temperature probes placed on incandescent element. The controller is configured to cut off the power supplied to the heater if the temperature of the incandescent element drying exceeds the set value. This controller is factory installed temperature of about 375ºC. Temperature value will be adjusted at the place of installation operation right down to 325ºC damage to the device.
The control cabinet must have IP32 grade protection and ventilated the entire cabinet is made from high-quality steel plate , of a thickness of at least 2mm. The entire cabinet inside the outside to be painted according to the electrostatic paint spray or dip. Paint inside and outside of the cabinet is painted light gray.
All equipment including auxiliary equipment are designed, engineered for operational lifespan of at least 25 years.
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