The primary variable (PV) in Figure 4 is the target distance at 3.442 feet. The home screen displays the Radar calibration values, the target distance and loop current. The next screen shown on the 475 Communicator is referred to as the “HOME” screen. Tap the “YES” button on the bottom left side of the screen (Figure 3) to proceed. If a device descriptor is not installed the 475 Communicator will use the HART universal and common commands to program the Radar.įigure 3 shows the message displayed when a device descriptor is not found.įigure 3 shows the 475 Communicator screen when a device descriptor file is not found.ĥ. The information is used to load a device descriptor if one is installed on the Communicator. The 475 Communicator will request the manufactures code and model number from the Radar unit. The HART icon can be seen in the upper left corner of Figure 2.įigure 2 shows the main screen of the 475 Communicator.Ĥ. Power on the 475 Communicator by pressing and holding the power key until the green light on the power key blinks.ģ.
The additional 250-ohms resistor required only when we use power supply units to power the transmitter in the calibration labs.Ģ. Note: When you connect the radar transmitter to the PLC or DCS system then the 250-ohm resistor already included at the system side, so you can directly connect HART communicator terminals across transmitter terminals. Figure 1 shows a wiring diagram, the required load resistor, and loop voltage. Connect power to your HART enabled Radar transmitter. Tapping on the screen will only highlight the menu item. For example to select the menu item “1 Device setup“, you must press the number 1 on the keyboard. In order to activate a menu item, you must use the keyboard and enter the number associated with the menu item. Menus in the 475 Communicator are displayed as a numbered list. For additional information on the operation of the 475 Communicator please refer to the user manual. In this article, the Emerson 475 Field Communicator will be referred to as the “475 Communicator”.
SMART TOOL CALIBRATION INSTRUCTIONS SOFTWARE
The 475 Field Communicator used for this article contained system software version 3.7.
SMART TOOL CALIBRATION INSTRUCTIONS HOW TO
The following instructions describe how to configure a 2 wire Radar smart transmitter with HART communicator using an Emerson 475 Field Communicator.
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