LM35: Application circuit for remote temp sensor

Part Number:LM35

Hi,

From the datasheet page16., there are 3 kinds of remote temp sensor, and here are the question:

1. Those circuit could measure up to 40degreeC, what is the limitation?

2. If I need to measure up to 100degreeC, how should I make the change?

3. What is the difference between the type Grounded Sensor and Output Referred to Ground in application?

4. For figure16., the sensor Vout is measure at 200Ohm? How it works?

Thank you very much!!

C.T.