Crystal nVision Lab Reference - Manual (Page 29)

Modules  27
nVision Operation Manual
 Current Measurement
The nVision may be used to measure current up to 50mA. Select the desired current mode through the Setup menu to properly configure the nVision prior to
connection and use.
 Current Measurement with HART Resistor
The nVision may be used to measure current in a circuit that includes a HART transmitter or device. For devices that use the HART protocol, a load resistor
must be placed in the loop. The HART input on the MA20 provides a 250 Ohm load resistor. Select the desired current mode through the Setup menu to
properly configure the nVision prior to connection and use.
MA20 module Current Measurement connection. MA20 module with HART load resistor.
Voltage Mode
The nVision may be used to measure voltages up to 28VDC. Select the Voltage mode through the Setup
menu to properly configure the nVision prior to connection and use.
MA20 module Voltage connection.