Recommended actions
1. Check sample block heater circuit for broken wire or loose connections
per Figure 9-2 and Figure 10-8.
2. Repair broken wire or loose connection.
Potential cause
Sample block heater open.
Recommended actions
1. Check resistance of sample block heater per Figure 10-8.
Normal sample block heater resistance is 36.4 Ohms each (18.2 Ohms
with both heaters in parallel).
2. Replace sample block heater if heater is open or has a large resistance.
Potential cause
Heater electronics failure.
Recommended actions
Check heater fuse F4 in electronics housing per Figure 9-1.
• If open, locate and correct cause of overload.
• If F4 is not open or if cause of overload cannot be found, replace
electronics package.
Potential cause
Sensor housing exposed to high wind and/or extreme cold temperatures.
Recommended action
If above causes are not causing the SB heater failure, install flange insulator
(PN 6P00162H01).
9.3.22
Cal Warning or Cal Failed
Calibration warning or calibration failed.
Potential cause
Calibration gas supply low or gas connection leaking.
Recommended actions
1. Check calibration gas supplies and connections.
2. Adjust gas pressure and flow.
3. Replenish low calibration gas supplies and tighten or repair loose or
leaking connections.
4. When calibration gas supplies are adequate, recalibrate.
Troubleshoot
Manual
December 2022 00809-0500-4880
228 Emerson.com/Rosemount
To Next Page
Loading...
