3. Connect the wires to the connection terminals ④ "+" and "-", observing the polarity and the
torques.
– Use wires with a diameter of 0.5 ... 2.5 mm
2
.
– If you use stranded wire used, you need a ferrule.
4. Apply the shield to the screw of the ground terminal ⑨.
The screw of the ground terminal is electrically connected to the external protective
conductor connection.
NOTICE
Incorrect measured values with incorrect grounding
The device must not be grounded using the "+" connection. It may otherwise malfunction
and be permanently damaged.
● If necessary, ground the device using the "-" connection.
See also
Torques (Page 101)
5.2.3 Closing the device
Procedure
① Cover over buttons ⑤ Blanking plug
② Cable gland ⑥ Safety catch (front)
③ Safety catch (back) ⑦ Cover (front), optionally with inspection window
④ Cover (rear) for electrical terminal compartment
Figure 5-4 View of the pressure transmitter: Left: Back right: Front view
Connecting
5.2 Connecting the device
SITRANS P320/P420 with 4 to 20 mA/HART
Compact Operating Instructions, 09/2018, A5E38874562-AB 41