GMRT antenna shells
are equipped with highly intelligent sub-systems to provide the
best results to the Observatory. About 95% of the sub-systems involve
only electronics. Hence all the sub-systems are working inside the
antenna shells with great care and attentions under highly temperature
Continuously Monitors the temperature at the Antenna shell and
transmits the data to the Control Room.
Semiconductor make LM-35 (0-100 degC) is used as the sensor in the
voltage varies at the rate of 10mV/degC with maximum resolution of
# The system
has facility to automatically shut down the shell power when the
temperature goes beyond a threshold level.
# An online
program has been developed to display the Antenna temperatures in
the Control Room.
# The program
also gives an Audio warning in the Control Room and the Antenna name is
flashed on the Computer screen.
# Generally the
temperature goes up due to some failure in the Air conditioning system.
temperature due to Receiver system over heating has not been observed so
Temperature Control & Monitor is monitoring the remote antenna
shells temperature in the Control Room at Central Electronics Building
through Optical Fiber Network. It has direct
digital display read out for shell temperature right at the antenna base.
Temperature Interlock is activated in all the antenna shells to avoid
over temperature inside the antenna shells due to Air Conditioning