Sensor

Transmitter diagnostics

Sensor, SIF /

Transmitter Diagnostics In the previous post we have explained in a brief way what are the failures of transmitter that affect the calculation of PFDavg / PFH and MTTFS of the Safety Instrumented Function (SIF). We will go deeper into the transmitter diagnostics and explain it with some example. Recall that the “Fail High” and …

Transmitter diagnostics Read More »

Transmitter Failures

Basics, Sensor, SIF /

Transmitter Failures (4-20 mA) In the following table we see an example of the types of transmitter failures and which we should consider when verifying the Safety Instrumented Function (SIF). The rates in the example correspond to the Rosemount model 3051 pressure transmitter. Type of failure Example of Failure Rates per hour (FITS) Notes Fail …

Transmitter Failures Read More »