Meriam MFT 4010 Modular Calibrator_HART Communicator - Manual (Page 48)

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Normal Device Out menu options can be selected for the transmitter type of interest. The T - > indicates
“Template”. The Cal Type is automatically set for the selected template. Adjustments can be made as needed
to the Cal Type parameters to customize the application. Once all setup information is complete, move the
cursor arrow to Begin Calibration and press the Select soft key.
Now continue to design the desired template as prompted. Be sure to carefully select the desired settings for
the documenting session at hand. Refer to the Calibrate Key section of this manual for additional details. Be
sure to select “Save to Template” option at the end of the template setup screens to save the created
procedure template for later recall and re-use. Once saved, the template is ready for immediate use.
Loop Test Calibration Procedures and Documentation - Manual
Loop Test allows the user to choose a calibration procedure from a list of commonly checked loop output
values or to input a custom loop calibration procedure. This function can be used with conventional or HART
devices with current (mA) output. For conventional devices, the MFT’s VMA0055 module is used on the loop to
simulate a transmitter output to the loop (loop is externally powered for this test with greater than 20 mA
available on the loop). For HART devices, the MFT 4010 sends HART commands to “fix” the device’s analog
output to the selected values (regardless of process variable value). In either case, the user keys in the value
of the loop received by the control room, or read by a receiving device, to document the loop performance.
Enter the Loop Test Calibration function by pressing the Calibrate Key from the MFT’s Measure Mode and
then set up the Procedure (Manual or From PC as appropriate), Device Out (Conv or mA) and Cal Type
(Loop Test) menu options as described in the Calibrate Key section of this manual.
Once Cal Type is set to Loop Test then VMA Sim / IV Meas should automatically be set as well. When satisfied
with the set up, Select the Begin Calibration menu option. On the resulting screen, shown at left below,
Cal
Cal Setup:
Begin Calibration
Procedure: Template
DeviceOut: T - > Conv
Cal Type: P
P Meas / IV Meas
Quick Cal
Smart Trim
View Results
Clear Cal Memory
Up Down Select Back
Calibrate Key Main Menu Screen
Cal
Cal Setup:
Begin Calibration
Procedure: Manual
DeviceOut: mA
Cal Type: Loop Test
VMA Sim / IV Meas
Quick Cal
Smart Trim
View Results
Clear Cal Memory
Up Down Select Back
Calibrate Key Main Menu Screen