Can Rosemount temperature transmitters have their zero point adjusted?
Thread Content
Dear experts: Can the Rosemount 3144P temperature transmitter perform zero point shift? In other words, the actual temperature is 20 degrees, but I have the transmitter output 21 degrees Celsius. Waiting for a reply
Why is zero drift necessary for temperature transmitters? It seems that only pressure/differential pressure transmitters have the concept of drift
Then, can a temperature transmitter increase its output value? The measured temperature is 20 degrees, but the output is 21 degrees?
This post was last edited by tiger2010 on 2019-3-22 at 12:06. What is the purpose of doing this? As long as it is a smart transmitter, some of its functions can meet your requirements
There are certainly ways to achieve the display of the actual temperature plus a fixed value, but it is not recommended to use such methods. For example, a fixed appropriate resistor can be connected in series in the thermistor circuit.
Yes, my goal is to add a fixed value to the actual value, just like in the zero-point adjustment of pressure transmitters – a fixed value is added, either positive or negative
Bro, this isn’t migration – it’s fraud; the temperature hasn’t changed at all
Temperature readings, of course, can be transferred. Just like foreign dogs, they can pee at the bottom of a slope or on the slope, spraying it high up. Right? ! :Lol, what kind of “migration” is that? Dogs aren’t easy to lead; foreign dogs will bite your mouth. Just call it translation – it’s simple and clear. :P.
If there is a manual controller, it can be adjusted. If not, if you want a higher output, add a small resistor. If you want the output to be lower, there’s nothing that can be done about it.
Temperature is generally not corrected (or shifted); it is a key parameter for controlling processes in chemical production, and it is recommended to rely on the reliability of the instruments used.
Of course. Set the range to 0-100 degrees; in reality it is 20, and at this value the output current is 7.2 mA. If you want to display it as 21, the current will be 7.36 mA. By calculating, the range should be set to 0-95; however, it can only display 21 degrees accurately, and the higher the temperature, the greater the error