Mar 4, 2014 · so how to interface pt100 with PIC. Look at this data sheet pdf [last page] and the LTSpice sim circuit for options. Ask if you have a problem. All PT100 sensors are 2 wire, it's the wires to the sensor that can be 2, 3 or 4. Since the resistance change is small, one has to compensate the lead resistance.

Jul 5, 2005 · Can anybody give me any hints ideas or circuits to allow me to read the temperature from a Pt100 RTD probe in to a PIC microcontroller? Regards, Mark

The PT100 RTD Evaluation Board demonstrates how to bias a Resistive Temperature Detector (RTD) and accurately measure temperature. Up to two RTDs can be connected. The RTDs are biased using constant current source and the output voltage is scaled using a difference amplifier.

Oct 2, 2004 · In your opinion which is the best way to interface PT100 to an A/D Pic16f876 port? is there any IC suitable? how can I filter PT100 signal to have a good temperature sensor? is there any trick? Your PIC has 10-bit A/D, what represents 1024 levels (≈0.0049mV per level).

May 24, 2006 · This circuit [pt100-precision-interface...] is designed to work as an instrumentation amplifier, and some of opamps’ inputs work with voltages very close to 0V/GND. For that one needs a rail-to-rail opamp.

Sep 16, 2011 · I am required to connect a PT100 2-wire thin film sensor to a PIC16F877A. I am connecting the sensor to RA0 of the PIC. But it seems like my PIC is not getting any readings.

Jan 3, 2010 · I want to display and control (on/off control) temperature using pt100 as sensor and pic16f877A. I built 1mA current source using lm324 quad operational...

Oct 5, 2007 · 1.2 what is the pt100 rtd evaluation board? The PT100 RTD Evaluation Board demonstrates how to bias a Resistive Temperature Detector (RTD) and accurately measure temperature.

Jun 2, 2012 · Hiện em đang làm tiểu luận đo nhiệt độ dùng cảm biến PT100 và pic16f877a. Vấn đề của em là khi hiển thị nhiệt độ lên LCD thì giá trị nhiệt độ thay đổi liên tục sau mỗi thời gian lấy mẫu, thất thường (ví dụ 28 rồi 31 rồi 37 rồi 25 rồi 35...).

Dec 20, 2003 · How can I to read any PT-100 (RTD) in the PIC with AD 8 or 10bits?