Rosemount handheld controller calibration: 248 644 3144 – temperature transmitters, thermocouples, resistance thermometers – calibration codes

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Steps for changing the gauge scale number: In fact, for Rosemount 248, 644, 3144 temperature transmitters, both their measurement range and gauge scale number can be modified at any time using the Rosemount 475 handheld communicator. So how exactly is this done? First, supply 24VDC power to the transmitter and turn on the power of the 475 handheld controller. Connect the signal cable of the 475 handheld controller to the transmitter, making sure not to connect them in the wrong direction. Next, you can follow these steps: 1. Double-click on the menu HARTAPPLICATION on the handheld controller using the stylus; several options labeled YES will appear, click on YES ； 2. Similarly, use the stylus to double-tap on the menu DEVICESETUP on the handheld device to proceed to the next step ； 3. Double-click CONFIGURATION --> double-click SENSORCONFIG --> double-click SENSOR1 --> double-click CONNECTIONS ； 4. Select the desired division code, such as PT100-385, E, B, S, K, etc ； 5. Next, select 2WIRE, 3WIRE, or 4WIRE for the sensor by clicking on it. 6. At this point, the 475 manual controller screen will display “OK” twice; by clicking on it, the indexing number is successfully changed ； 7. Finally, return to the initial menu of the 475 controller, turn off the power, and remove the signal cables of the 475 controller.