I'm having a problem with a new O2 probe (see above for description). Intermittently, the cell impedance will go high (>10000 ohms) and the transmitter will fault. This condition lasts from a few minutes to tens of minutes and corrects itself with no intervention on my part. I'm working with technical support but wondered if anyone else has any thoughts on this situation.
Typically a spike in cell impedance indicates poor contact between the O2 cell and cell pad/wire assembly, loose crimping, or a loose wire. First, verify all wiring is secure and ensure each wire is not unintentionally contacting another object that could create a short. If the probe must immediately be operational, please disassemble the probe and add tension to the spring located in the heater strut assembly. Verify all crimping.
If you can provide the same description of the issue, along with the list of alarm events that are occurring and the serial number of the probe (e.g. M-1401234) to Gas.CSC@Emerson.com, we can assist you with a warranty replacement of the probe, and you can return your current probe for inspection by our quality engineers.