Meriam MFT 4010 Modular Calibrator_HART Communicator - Manual (Page 91)

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VMA0055 Module Quick Instructions
For mA / V measurement, Xmitter Simulation, mA Source and V Source
Notices:
1) The VMA 0055 module is not hot-swappable. To install the module, turn the MFT base unit OFF, install the
VMA 0055 in any bay and turn the MFT back ON. Attempting to install the VMA module with MFT power ON
will cause the MFT to shut down. Damage could occur to the MFT or module.
2) Only one VMA module is allowed to be installed at a time in MFT.
3) Intrinsically Safe VMA 0055 modules require the MFT Intrinsically Safe base units. The VMA module must be
installed or removed in a safe area. For more information on Intrinsically Safe operation, see the MFT User’s
Manual section on this topic and see the Intrinsic Safety Control Document in the appendix.
4) The MFT’s Rcal feature does not support field recalibration of the VMA0055 module. Consult the
manufacturer for return and recalibration of VMA0055 modules.
The VMA Module has two measurement functions and four source/simulate functions:
Measure
• ± 55.000 V dc
• ± 100.000 mA dc
1.0 Measurement Applications
The VMA module will measure voltage and current to upper values that exceed the MFT base unit’s metering
capabilities.
1.1 Use “Volts” and “Com” jacks on the VMA module to measure voltage from upper range values of
±500.000 milli-volts to ±55.000 volts. The “V Range” should be set to the appropriate range for best
accuracy. This is done from the MFT
Measure Mode by pressing the More soft key twice and then the
Vrng soft key. The following display appears for selection of the desired Voltage measurement range.
The top line of the V Range display indicates the range presently in use. To select a more suitable
range for the application at hand, simply arrow
Up or Down to the desired range and press the Save soft
key. Press Back when satisfied with the range selection.
1.2 For current measurements up to
±100 mA, use the VMA module’s “mAmp” and “Com” jacks as you
would with a standard meter. ±100.000 mA can be measured without any range selection for current.
Voltage range selection display
VMA Setup
V Range +/-55
+/-55
+/-30
+/-15
+/-8
+/-4
+/-2
+/-1
+/-.5
Up Down Save Back
Source / Simulate
• 24 VDC Loop Power
• Xmitter Sim
• mA Source
• V Source