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5. Make sure that the error is in the specified limits
(Table 10).
Table 10: mA Input Error Limits
Calibrator Error
Applied mA
±55
±40
±24
±18
±12
±6
0 (open circuit)
4.3 Procedures: mA Output
1. Connect the instrument to the calibration equipment
(Figure 1).
2. Let the equipment get to a stable temperature
(minimum: 5 minutes since the last power on).
3. Use the calibration menu (Table 9) to do a two-point
calibration (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 output task (Table 2) and set these
output values:
•
mA: 0.1, 4, 12, 20, 24
5. Make sure that the error is in the specified limits
(Table 11).
Table 11: mA Output Error Limits
Calibrator Error
Output mA
0.1
0.000 006
4
0.000 20
12
20
24
4.4 Procedures: mV/Volts Input
1. Connect the instrument to the calibration equipment
(Figure 4).
2. Let the equipment get to a stable temperature
(minimum: 5 minutes since the last power on).
3. Use the calibration menu (Table 9) 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 mV or Volts input task (Table 2).
5. Then apply the input values that are applicable to the
calibration:
•
mV: -120, -60, -30, 0 (short circuit)
•
Then mV: 0, 30, 60, 120
OR
•
Volts (V): -30, -15, -5, 0 (short circuit)
•
Then volts (V): 0, 5, 15, 30
Copyright 2005 Baker Hughes Company.
12 | DPI880 Instruction Manual–English
Permitted DPI880
(mA)
Error (mA)
0.002 2
0.005
0.001 8
0.004
0.001 4
0.003
0.000 4
0.003
0.000 3
0.002
0.000 2
0.002
-
0.001
Permitted DPI880
(mA)
Error (mA)
0.001
0.001
0.001 4
0.001
0.002
0.002
0.002 3
0.002
6. Make sure that the error is in the specified limits
(Table 12 or Table 13).
Table 12: mV Input Error Limits
Calibrator Error
Applied mV
±120
±60
±30
0 (Short circuit)
Table 13: Volts (V) Input Error Limits
Applied V
Calibrator Error (V)
±30
0.000 58
±15
0.000 11
±5
0.000 06
0 (Short circuit)
4.5 Procedures: mV/Volts Output
1. Connect the instrument to the calibration equipment
(Figure 4).
2. Let the equipment get to a stable temperature
(minimum: 5 minutes since the last power on).
3. Use the calibration menu (Table 9) to do a two-point
calibration (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 mV or Volts output task (Table 2).
5. Then set the output values that are applicable to the
calibration:
•
mV: 0, 30, 60, 90, 120
OR
•
Volts (V): 0, 3, 6, 9, 12
6. Make sure that the error is in the specified limits
(Table 14 or Table 15).
Table 14: mV Output Error Limits
Calibrator Error
Output mV
0
0.000 05
30
0.000 425
60
90
0.001 175
120
0.000 98
Table 15: Volts (V) Output Error Limits
Output V
Calibrator Error (V)
0
0.000 000 05
3
0.000 017 5
6
0.000 03
9
0.000 05
12
0.000 134
4.6 Procedures: Hz Input/Output
1. Connect the instrument to the calibration equipment
(Figure 6).
Permitted DPI880
(mV)
Error (mV)
0.001 3
0.03
0.000 8
0.02
0.000 6
0.02
-
0.01
Permitted DPI880
Error (V)
0.004
0.002
0.001
-
0.001
Permitted DPI880
(mV)
Error (mV)
0.01
0.02
0.000 8
0.03
0.03
0.04
Permitted DPI880
Error (V)
0.001
0.002
0.002
0.002
0.002
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