Procedure
1. Mount the device.
Mounting the SITRANS TF dual chamber housing (Page 70)
2. Connect the device.
Connecting the SITRANS TF420 dual chamber housing (Page 97)
3. Switch on the power supply.
Switching on the supply voltage (Page 128)
4. Wait for 2 seconds.
After this startup time, the device is operational.
5. Wait 5 minutes to get exact measured values.
6. If you want to change the factory settings, configure the device using the buttons (Page 106)
or remote operation.
Parameter assignment over device with display (Page 138)
Assigning parameters using remote operation (Page 159)
7. Lock the device.
8.15
Switching on the supply voltage
Requirement
• You have connected the device correctly. (Page 77)
• The terminal voltage on the device is correct. (Page 193)
Procedure
Switch on the supply voltage.
• Product name and firmware version appear briefly on the display.
• The measured values are shown on the display.
For a device without a display, you read off the current output as follows:
– Over the remote control (e.g. SIMATIC PDM).
– With a DC current measuring device.
Commissioning
8.15 Switching on the supply voltage
SITRANS TH100/TH320/TH420/TR320/TR420/TF320/TF420 with 4 to 20 mA/HART
128
Operating Instructions, 05/2020, A5E41864807-AB