Sercel GRC DATA PRO Operation Manual page 56

Indicators

Continuous Low amp error

SyncPhs keeps restarting
Correction

Measure the voltage between 'Well GND' and 'Signal' terminals. The voltage switching
between 40V and 0V indicate a bad connection to the gauge.

The voltage switching between 40V and 70V indicate a good connection to the gauge.

Check Signal fuse

Check Setting of Low amp

Check Setting of High amp
High Amps
Possible Reason(s)

High and Low amp parameters have been corrupted

Bad ground

Bad SPS circuit board
Indicators

Continuous High amp error
Correction

Check Setting of Low amp (18mA - 19mA normally for SPS-1500)

Check Setting of High amp (31mA - 32mA normally for SPS-1500)

Check Downhole readings (Phase to Phase, Phase-Ground (Reverse Polarity Megger))

Replace with new SPS-1500
Analyzing
Possible Reason(s)

Cannot get voltage signal to tool

Disconnected from tool

Blown Signal fuse
Indicators

Continuous Analyzing / SyncPhs
Correction

Check all connection(s)

Check Phase to Phase and Phase-Ground connection (Reverse Polarity Megger)

Check Signal fuse

Adjust Set voltage (Approx. 60+/- for 1500)
Many problems with the SPS-1500 are resolved with proper grounding techniques. A
good ground must be connected from the production tubing wellhead back to the
ground point at the surface package for proper operation. A STAR ground is
recommended for all applications. Never daisy chain or loop earth grounds.
Data Pro
Operation Manual
Note:
P/N 10029355 Rev AE
Page 56 of 92