Copyright 1996 Baker Hughes Company.
English–ADTS 403/405 Calibration Manual | 21
Defining Elements for a Program
•
To find existing calibration data.
•
To find pressure errors between the standard and the ADTS
403/405.
•
To decide if correction should be carried out.
•
To carry out corrections.
•
To calculate slope and offset shifts.
•
To accept new slope and offset.
•
To calculate new residual correction values.
•
To install new calibration data.
5.2.2 To Find Existing Calibration Data
Use SCPI CAL:ADJ query command to retrieve slope, offset and residual values into
OLDSLOPE, OLDOFFSET and R(0) to R(11).
To initialize variables:
1. FOR n = 1 to MAXPTS
2. STANDARD_PRESSURE(n) = 0
3. AVE403/405(n) = 0
For any calibration point not being used:
1. R(n) = 0
2. NEXT N
5.2.3 To Find Pressure Errors Between Standard and ADTS
403/405
1. FOR n = 1 to MAXPTS
2. Apply calibration pressure (value from appropriate table)
3. Store exact value from calibration standard in STANDARD_PRESSURE(n)
4. Take 5 pressure readings from ADTS
403/405.
5. Average the five readings.
6. Store averaged readings in AVE403/405(n).
7. NEXT N
If necessary, pressure points may be missed out, see Section
5.1.2. The actual number of points
applied should be saved in PTSUSED.
5.2.4 To Decide if Correction Should be Carried Out
If all pressure readings are within specification THEN Exit algorithm here (calibration check
complete).
5.2.4.1 To Carry Out Correction
1. SX = 0
2. SX2 = 0
3. SY = 0
4. SY2 = 0
5. FOR n = 1 to MAXPTS
6. COMP403/405(n) = AVE403/405 (n) + (R(n) * FS/1E6)/OLDSLOPE
7. SX = SX + STANDARD_PRESSURE(n)
8. SX2 = SX2 + (STANDARD_PRESSURE(n) * STANDARD_PRESSURE(n))
9. SY = SY + COMP405(n)
Summary of Contents for ADTS 403F
Page 1: ...Druck com ADTS 403 405 R F Air Data Test System Calibration Manual...
Page 2: ......
Page 8: ...Copyright 1996 Baker Hughes Company vi ADTS 403 405 Calibration Manual English...
Page 10: ...Copyright 1996 Baker Hughes Company viii ADTS 403 405 Calibration Manual English...
Page 39: ......
