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10 Troubleshooting
Topics covered in this chapter:
• Status LED states
• Status alarms
• Flow measurement problems
• Density measurement problems
• Temperature measurement problems
• Milliamp output problems
• Frequency output problems
• Use sensor simulation for troubleshooting
• Check power supply wiring
• Check sensor-to-transmitter wiring
• Check grounding
• Perform loop tests
• Trim mA outputs
• Check the HART communication loop
• Check HART Address and Loop Current Mode
• Check HART burst mode
• Check Lower Range Value and Upper Range Value
• Check mA Output Fault Action
• Check for radio frequency interference (RFI)
• Check Frequency Output Maximum Pulse Width
• Check Frequency Output Scaling Method
• Check Frequency Output Fault Action
• Check Flow Direction
• Check the cutoffs
• Check for slug flow (two-phase flow)
• Check the drive gain
• Check the pickoff voltage
• Check for electrical shorts
• Check the core processor LED
• Perform a core processor resistance test
Troubleshooting
Configuration and Use Manual 173