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Questions tagged [pt100]

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4
votes
3answers
64 views

Using arduino to simulate a pt100 temperature sensor

I want to simulate a temperature PT100 sensor using arduino. What I did till now is on that draw that I attach here. The components were determined by experiments so I guess if there can be some ...
0
votes
1answer
44 views

Output Voltage Formula verification of Operational Amplifier circuit

I'm trying to built an op-amp circuit for a PT100 temperature sensor. I've found the following circuit diagram online (from a polish website): And I'm trying to find the formula for the output ...
0
votes
0answers
43 views

3-Wires PT100 simple circuit design

I'm new to using PT100 sensors and to electronics in General (my knowledge in electronics starts and stops with Arduino). However I'd like to design a simple PT100 (3-wires) sensor circuit. I found a ...
1
vote
1answer
96 views

Problem in temperature transmitter because of VFD (Variable Frequency Drive)

I made an amplifier of PT100 bridge which operates on 24V DC supply and gives 0 - 10V DC for 0 - 400°C when tuned. The circuit is as follows : Here P2 + and P4 S+ are shorted and P4 S- is left open....
0
votes
0answers
36 views

2-Wire RTD techniques

I'm trying to understand the difference and caveats of those two different ways of measured the resistance of RTDs: the voltage divider and the unbalanced bridge: simulate this circuit – ...
1
vote
1answer
118 views

PT100 sensor for measuring liquid resin, fully submerged

Edited Link to Pt100 sensor (That's the best i could do) https://www.intech.co.nz/products/temperature/mrh.html Link to ESP8266 datasheet http://www.handsontec.com/pdf_learn/esp8266-V10.pdf ...
1
vote
3answers
507 views

LM324 instrumentation amplifier gain and offset problem

I want to translate a Pt100 RTD to a 0-10V range, to be read by a PLC. I designed a circuit (instrumentation amplifier) using the LM324 op-amp. It is powered using a single 12V supply.The resistor ...
0
votes
1answer
90 views

Adafruit Pt100 temperature sensor

I want to connect 3 wire pt100 sensor with arduino uno, without using any amplifier or op-amp. What could be the circuit of the same?
0
votes
1answer
172 views

Sallen-Key filter for PT100 RTD measurement

I am going to build temperature sensing system using PT100 sensor (and later Raspberry PI 3). I refer my work to Microchip note AN687 Precision Temperature-Sensing With RTD Circuits. On the page 4 is ...
0
votes
1answer
156 views

Resolution enhancement for a 2wire PT100 setup with ADC and no external amplification

I'm working on a PT100 based temperature probe sensor to read temperature difference between two points inside a pipe with flowing water, the requierements are: 1mK resolution over 0-45C range. dual ...
1
vote
3answers
104 views

self-heating effect of dual PT100 temperature probe in a moving mass of water

I'm trying to know how much self-heating should I expect in these conditions: Temperature range: 0-45 C Using a 1050Ohm pullup resistor to feed each PT100 (2-wire configuration) with 5 volt ...
0
votes
3answers
479 views

Multiplexing PT100 with CD4051

I am interested in developing a generic 8-channel 4-wire PT100 interface for RaspberryPi. Needed accuracy must be better than 1degC and range from 0-200 degC. Additionally i need lead wire ...
0
votes
4answers
3k views

How to calibrate PT100 with Arduino

Im trying to use my PT100 with an Arduino-based PLC from Industrial Shields, which is basically an Arduino Mega encased in a plastic container. Im using a 250Ω resistor, actually 237Ω resistor ...
0
votes
0answers
205 views

Alternatives to MCP609 Op-Amp for a precision temperature sensing circuit

I plan to build the circuit provided by MicroChip (PDF) and unfortunately, i can't find the MCP609 Op-Amp on the website I order most of the components. However, they have the MCP6024 quad op-amp and ...
0
votes
2answers
742 views

2 wire rtd pt100 in a wheatstone bridge using ad620

can i use ad620 with rtdp pt100??i already made a schematics in Proteus but it give me constant voltage 3.7 v.increasing or decreasing temperature didn't effect output voltage at ad620 ..i place a ...
0
votes
2answers
76 views

Multiple 4-wire PT100s with same excitation current?

Is there any potential loss of accuracy if I use the same excitation current for multiple 4 wire PT100s? Effectively connecting the excitation wires in series. At present I am using one set of analog ...