Write Arduino Software that communicate with PC

We need a system that can Collects variety of data loggers of sensors that located at distances of 7-40 m from the computer. (Collects data rate can be determined) Data storage system; The sensors that we have: 4 units -air temperature sensor (accuracy of 0.2 or higher is required) 3 units - temperature rose Sensor (measuring with touch / IR) (accuracy of 0.5 or higher is required) 4 units - air humidity sensor (0.5% accuracy is required) 2 units - leaf wetness sensor Depending cost might be interested in: 2 units - could PAR radiation sensor 2 units - Net general radiation sensor 2 units - weighing Sensor 0-15 kg. (Accuracy Ndrs- 10-1 g) 1 units - carbon dioxide concentration Sensor - There is also a need to have five sensors entrances empty, might be added in the future - Where no great precision is not necessary sensors required laboratory equipment with precision but inadequate. In the event that a very precise sensor maker may we prefer the simple sensor - Whether the sensors work by 4-20ma or by 0-10V control system There is also a need to relay to be run according to the data received (currently scheduled according to the temperature and air humidity plus increased moisture but is subject to change) The control system is required to run the relay NC certain time when passing thresholds specified sensors, operating there after a fixed delay time regardless of subsequent resale values ​​measured System in standby mode.