A pneumatic temperature transmitter is ranged 50 to 140 degrees Fahrenheit and has a 3-15 PSI
output signal. Calculate the pneumatic output pressure if the temperature is 79 degrees Fahrenheit.
First, we convert the temperature value of 79 degrees into a percentage of range based on the
knowledge of the temperature range span (140 degrees − 50 degrees = 90 degrees) and lower-range
value (LRV = 50 degrees). We may do so by manipulating the general formula for any linear
measurement to solve for x:
Next, we take this percentage value and translate it into a pneumatic pressure value using the
formula previously shown:
Therefore, the transmitter should output a PV signal of 6.87 PSI at a temperature of 79o F.
No comments:
Post a Comment
Note: Only a member of this blog may post a comment.