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As is well known, when setting the parameters of temperature transmitters, we generally use a 475 handheld programmer to make these adjustments. After purchasing a temperature transmitter, we cannot simply install and use it right away; instead, we need to make preliminary settings based on our actual requirements and operating conditions before installing and using it. Today, the technical editor from HuiBo Electromechanical will use the Rosemount 644 temperature transmitter as an example to explain how to configure this transmitter using a 475 handheld programmer I. How to modify the range of a Rosemount 644 temperature transmitter using a Rosemount 475 handheld controller. The specific steps are as follows: 1. Turn on the device, connect the 475 handheld controller to the pressure transmitter, and select HART. 2. After a successful communication connection, select Online; at this point, the menu of specific functions that can be configured on the Rosemount 644 temperature transmitter will be displayed. 3. Select and click 2.configure. 4. Select and click 2.manual setup to perform manual settings. 5. Select and click 3.analog outputs. 6. Select and click 1.primary variable configuration. 6. Click 2.upper range and enter the upper limit value ； Click 3.lower range and enter the upper limit value. II. How to modify the damping of the Rosemount 644 temperature transmitter using the Rosemount 475 handheld controller. The specific steps are as follows: 1. Turn on the device, connect the 475 handheld controller to the pressure transmitter, and select HART. 2. After a successful communication connection, select Online; at this point, the menu of specific functions that can be configured on the Rosemount 644 temperature transmitter will be displayed. 3. Select and click 2.configure. 4. Select and click 2.manual setup to perform manual settings. 5. Select and click 1.sensor. 6. Click on 5.damping to set the damping value. III. How to modify the settings of several threads on a Rosemount 644 temperature transmitter using a Rosemount 475 handheld controller. The specific steps are as follows: 1. Turn on the device, connect the 475 handheld controller to the pressure transmitter, and select HART. 2. After a successful communication connection, select Online; at this point, the menu of specific functions that can be configured on the Rosemount 644 temperature transmitter will be displayed. 3. Select and click 2.configure. 4. Then select and click 2.manual setup to perform manual settings. 5. Click 1.sensor. 6. Click 3.Connection, select 2wire, and set the thread settings. IV. How to set the scale factor of the Rosemount 644 temperature transmitter using the Rosemount 475 handheld communicator. The specific steps are as follows: 1. Turn on the device, connect the 475 handheld controller to the pressure transmitter, and select HART. 2. After a successful communication connection, select Online; at this point, the menu of specific functions that can be configured on the Rosemount 644 temperature transmitter will be displayed. 3. Select and click 2.configure. 4. Select and click 2.manual setup to perform manual settings. 5. Select and click 1.sensor. 6. Click 2.sensor type, select K, and set the graduation number. V. How to modify the circuit testing of the Rosemount 644 temperature transmitter using the Rosemount 475 handheld controller. The specific steps are as follows: 1. Turn on the device, connect the 475 handheld controller to the pressure transmitter, and select HART. 2. After a successful communication connection, select Online; at this point, the menu of specific functions that can be configured on the Rosemount 644 temperature transmitter will be displayed. 3. Select and click on 3.service tools. 4. Select and click on 5.simulate for simulation. 5. Select and click on 1.1oop test to set up the loop test