Publicidad
Idiomas disponibles
Idiomas disponibles
Selection Sequence:
Select Task (Table 2) Set Up (Table 1) Calibration
Display: Enter
1
2
Calibration PIN
MENU
4 3 2 1
OK
+
Factory PIN =
4321
Table 6: Calibration Options
Options
Description
(If applicable)
To calibrate the specified IDOS pressure input
P...
(P1 or P2
).
a
UMM only. To calibrate the specified IDOS
IDOS ...
UMM. Refer to the user manual for the IDOS
UMM.
DPI802/802P only. To calibrate the mA input.
mA
Calibration Due: To set the date of the next
calibration for the instrument.
After the specified calibration date, there is a
warning message. There is a selection box to
stop the warning.
To change the calibration PIN (Personal
Identification Number).
a. Optional item
When you select a channel, the display shows the
applicable instructions to complete the calibration.
When the calibration is complete, select Calibration Due
and set the new calibration date for the instrument.
4.2 Procedures (Pressure P1/P2)
1. Connect the instrument to the pressure standard
(Figure 2).
2. Let the equipment get to a stable temperature
(minimum: 30 minutes since the last power on).
3. Use the calibration menu (Table 6) to do a two-point
calibration (Zero and +FS) or a three-point calibration (-
FS, Zero and +FS). Refer to Table 7. The display
shows the applicable instructions to complete the
calibration.
Table 7: Calibration Pressures
Ranges: g/d
≤ 10.0 psi (700 mbar)
> 10.0 psi (700 mbar)
-13.1 (-900)
a. For a three-point calibration, do not apply more than -90% of the
specified FS for the unit.
Copyright 2003 Baker Hughes Company.
8 | DPI800/802 Instruction Manual–English
Menu: Select
3
4
Channel
P1... g
MENU
OK
(Table 6)
Nominal Applied Pressure
psi (mbar)
Zero
+FS
-FS
a
-FS
0
+FS
0
+FS
Ranges: a
5
5.00 psi (350 mbar)
30.0 psi (2 bar)
100.0 psi (7 bar)
MENU
OK
300.0 psi (20 bar)
Ranges: sg
≥ 5000 psi (350 bar)
4. To make sure that the calibration is correct, select the
applicable pressure task (Table 2) and apply these
pressure values:
•
Ranges g/d or sg: 0, 20, 40, 60, 80, 100 (%FS)
Then: Go back to 0 in the same steps.
Then (three-point calibration only): -20, -40, -60,
-80, -100 (%FS).
Then: Go back to 0 in the same steps.
•
Ranges a: 0, 20, 40, 60, 80, 100 (%FS)
Then: Go back to 0 in the same steps.
5. Make sure that the error is in the specified limits:
•
Standard accuracy:
The specified accuracy (refer to "Specification
Data" on page 9) includes an allowance for
temperature changes, reading stability for one
year, and the uncertainty of the standard used for
calibration.
In step 4, make sure that the error between the
applied pressure and the reading on the unit is not
more than 0.015% FS.
•
Premier precision:
The specified precision (refer to "Specification
Data" on page 9) includes an allowance for
temperature changes and the uncertainty of the
standard used for calibration.
In step 4, make sure that the error between the
applied pressure and the reading on the unit is not
more than the specified value for Premier
precision.
4.3 Procedures (mA input)
1. DPI802/802P only. Connect the instrument to the
calibration equipment (Figure 7).
2. Let the equipment get to a stable temperature
(minimum: 5 minutes since the last power on).
3. Use the calibration menu (Table 6) to do a three-point
calibration (-FS, Zero and +FS). The display shows the
applicable instructions to complete the calibration.
4. To make sure that the calibration is correct, select the
applicable mA task (Table 2) and apply these values:
•
mA: -55, -40, -24, -18, -12, -6, 0 (open circuit)
Then: 0, 6, 12, 18, 24, 40, 55.
Nominal Applied Pressure
psi (mbar)
Zero
+FS
< 0.02 (1.0)
+FS
< 0.07 (5.0)
+FS
< 0.29 (20.0)
+FS
< 0.73 (50.0)
+FS
Nominal Applied Pressure
psi (mbar)
Zero
+FS
Use atmospheric
+FS
pressure as zero.
Publicidad
