Vigilantplant TDLS8000, Руководство пользователя

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<9. Inspection and Maintenance>
9-42
IM 11Y01D01-01EN
9.9 Analog Input Calibration
This section explains analog-digital conversion calibration of the analog input terminal (AI). Since
the TDLS8000 is calibrated before shipment, you normally do not need to calibrate.
Execution menu path:
[HART] “Diagnosis/Service>>Trim analog channel>>Trim AI-1 (Pres)”
“Diagnosis/Service>>Trim analog channel>>Trim AI-2 (Temp)”
[YH8000] “ >>Configuration>>I/O>>Analog Input>>AI-1(Pressure)>>Calibration”
“ >>Configuration>>I/O>>Analog Input>>AI-2(Temperature)>>Calibration”
The calibration procedure is as follows.
(1) From HART or YH8000, start AI calibration.
(2) Connect a current source to the AI terminal, and apply 4 mA as instructed on the screen.
(3) Check that the analog input is stable, and proceed to the next screen.
(4) Apply 20 mA as instructed on the screen.
(5) Check that the analog input is stable, and proceed to the next screen. Calibration is
complete.
NOTE
If analog input calibration is executed when the analog input is set to process pressure or
temperature, the pressure or temperature during calibration is calculated based on the backup
function. For example, if the pressure’s Backup mode is set to Back value and Backup set value
is set to 101.0 kPa, the pressure at AI-1 during calibration is fixed to 101.0 kPa. For details on the
backup function, see “5.3.3 Setting the Process Pressure”.
9.10 Analog Output Calibration
This section explains digital analog conversion calibration of the analog output terminal (AO).
Since the TDLS8000 is calibrated before shipment, you normally do not need to calibrate.
Execution menu path:
[HART] “Diagnosis/Service>>Trim analog channel>>Trim AO-1 (PV)”
“Diagnosis/Service>>Trim analog channel>>Trim AO-2 (SV)”
[YH8000] “ >>Configuration>>I/O>>Analog Output>>AO-1>>Calibration”
“ >>Configuration>>I/O>>Analog Output>>AO-2>>Calibration”
The calibration procedure is as follows.
(1) Connect ammeter to the AO terminal.
(2) From HART or YH8000, start AO calibration.
(3) A current corresponding to 4 mA will flow. When the measuring instrument reading becomes
stable, enter the measured value.
(4) A current corresponding to 20 mA will flow. When the measuring instrument reading
becomes stable, enter the measured value.
3rd Edition: Jun. 10, 2016-00