TROUBLESHOOTING
ST51A/ST75A/ST75AV Mass Flow Meters
68
Fluid Components International LLC
Verifying Calibration Parameters (Diagnostics)
The instrument uses a set of predetermined calibration parameters to process flow signals. Most of these parameters typically do not
change. A Delta R Data Sheet, provided with the instrument, contains the factory-set parameters. To verify that these parameters have not
changed, complete the following:
1. Identify the instrument’s Delta R Data Sheet via its serial number.
2. To examine the stored parameters use the serial interface “D” menu. FC88: After entering the “D” menu press the [ENTER] key
repeatedly as required to step through each parameter one line at a time.
below lists the parameters with space to record
the instrument’s actual values (print this page). Verify the instrument’s parameters with the Delta R Data Sheet.
Table 24 – Diagnostic Test Sequence
Cust. Flow Data
Totalizer/Pulse Output
CB Setup (cont.)
CB Setup (cont.)
S/W Version:
Tot Menu:
KFactor 4:
Temp Flag:
Flow Factor:
Tot Flag:
ACT_Tslope 1:
Out Mode:
Cmin Flow:
Totalizer:
ACT_Tslope 2:
Namur Mode:
Cmax flow:
Rollover Cnt:
ACT_Tslope 3:
dR Namur Min:
Eng Units:
Pulse Factor:
ACT_Tslope 4:
dR Namur Max:
Line Size 0:
Pulse Out:
ACT_Tslope 5:
Boxcar Max:
Line Size 1:
Hours:
ACT_Tslope 6:
HART Damping:
Cmin Temp:
Sample Period:
ACT_Tslope 7:
RTD-SLP-385:
Cmax Temp:
CB Setup
REF_Tslope 1:
Heater DAC:
Cal Flow Data
ActR Slope:
REF_Tslope 2:
Htr Cur Adj:
Min Flow:
ActR Offset:
REF_Tslope 3:
Ref Cur Adj:
Max Flow:
ActR Ohm Adj.:
REF_Tslope 4:
% of Range:
Density:
RefR Slope:
REF_Tslope 5:
User Name:
*C1 [1]:
RefR Offset:
REF_Tslope 6:
Shop Order #:
*C1 [2]:
RefR Ohm Adj.:
REF_Tslope 7:
Serial No.:
*C1 [3]:
SpanIDAC 0:
ACT_Toffst 1:
Model#:
*C1 [4]:
ZeroIDAC 0:
ACT_Toffst 2:
*C1 [5]:
SpanIDAC 1:
ACT_Toffst 3:
Break Pt:
ZeroIDAC 1:
ACT_Toffst 4:
*C2 [1]:
TSpanIDAC 0:
ACT_Toffst 5:
*C2 [2]:
TZero IDAC 0:
ACT_Toffst 6:
*C2 [3]:
TSpanIDAC 1:
ACT_Toffst 7:
*C2 [4]:
TZeroIDAC 1:
REF_Toffst 1:
*C2 [5]:
State 0:
REF_Toffst 2:
dR Min:
Switch Pt 0:
REF_Toffst 3:
dR Max:
State 1:
REF_Toffst 4:
Cal Ref:
Switch Pt 1:
REF_Toffst 5:
Tcslp:
KFactor 1:
REF_Toffst 6:
Tcslp 0:
KFactor 2:
REF_Toffst 7:
Tcslp 2:
KFactor 3:
I Factor Lim:
An issue may exist if change is noted for any coefficient set parameter marked with an asterisk (*). Contact Customer Service if this is the
case. If the parameters have not changed, continue with the next section.
Summary of Contents for ST51A
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