How splits work with a condenser, with three or more evaporators, for temperature control.

Is there a temperature sensor for each evaporator? Since I only have one compressor, when one of the sensors reaches the desired temperature, does it turn off the solenoid installed in each evaporator in the respective liquid line? There is a check valve in the liquid lines for the purpose of preventing the temperature. The interference in temperature B? A .: Within the Hitachi line, we have two product family that work with multimeter evaporators. - Multizone: can work with up to 4 internal drives for each external drive. - Set-free: can work with up to 12 internal units for each external unit. For control of the equipment, we have sensors monitoring the following points: 1) Internal Unit: air inlet and outlet temperature, gas line and liquid line (in all units). 2) External unit: external air temperature, gas discharge and evaporator tube. Suction and discharge pressure. Monitoring these points is that the control microprocessor makes the decisions to open / close the electronic expansion valves, change of fan speed or variation of rotation of the compressor. The electronic expansion valves of the indoor units can be closed, proportionally to the need for refrigeration in the environment, up to 50% capacity. Below this the valve is fully closed and the internal unit is only ventilated. The compressor is of the scroll type and therefore to control its capacity we have two situations: 1) in the equipment of 5 hp, we have only one compressor and in this case we vary its capacity through a variation in the frequency of electric power. With this your rotation changes and consequently the soda flow and capacity. In the external unit there is a liquid accumulator that stores the refrigerant that is not circulating. The solenoid valve that makes the refrigerant by-pass is in the external unit. 2) On 8 and 10 HP equipment, we have two compressors, one working ON / OFF and the other working proportionally, as described above.