E0: No Error; E1: Low Signal; E2: Sound Speed Error; E3: Velocity Range - Panametrics DigitalFlow GF868 Service Manual

Chapter 2. Error Codes and Screen Messages
2.1.1

E0: No Error

Problem: No error condition currently exists.
Cause: This message appears briefly to confirm that the response to another error message has corrected the
problem.
Action: No action is required.
2.1.2

E1: Low Signal

Poor ultrasonic signal strength or the signal exceeds the limits entered via the User Program .
Problem:
Cause: Poor signal strength may be caused by a defective cable, a flowcell problem, a defective transducer or a
problem in the electronics console. A signal that exceeds the programmed limits is probably caused by
the entry of an improper value in the SETUP SIGNL submenu of the User Program.
Action: Using the procedures in Chapter 3, Diagnostics , check the components listed above. Also, check the
value programmed into the SETUP SIGNL submenu, as described in the Operator's Manual .
2.1.3

E2: Sound Speed Error

Problem:
The receive signal is detected too close to the open or close of the receive window.
Cause:
Incorrect programming of the path length. Loss of signal, so that noise at the start of the window is
triggering the measurement.
Action:
Verify programming of the path length. Check for loss of signal.
2.1.4

E3: Velocity Range

Problem: The velocity exceeds the limits programmed in the SETUP submenu of the User Program .
Cause:
This error may be caused by the entry of improper programming data or by poor flow conditions and/or
excessive turbulence.
Action: Make sure the actual flow rate is within the programmed limits. See the Programming Manual for details.
Refer to Chapter 3, Diagnostics , to correct any flowcell and/or transducer problems.
2.1.5

E4: Signal Quality

Problem: The signal quality is outside the limits programmed in the SETUP submenu of the User Program .
Cause:
The peak of the upstream or downstream correlation signals has fallen below the correlation peak limit,
as set in the
Action:
Check for sources of electrical interference and verify the integrity of the electronics console by
temporarily substituting a test flowcell that is known to be good. Check the transducers and relocate
them, if necessary. See Chapter 3, Diagnostics , for instructions.
18
SIGNL
submenu. This may be caused by a flowcell or electrical problem.
DigitalFlow™ GF868 Service Manual (1 and 2-Channel)