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7.7
Torques
Torques
Cable glands/blanking plugs
● Screw-in torque for plastic gland in all enclosures
● Screw-in torque for metal/stainless steel glands in
aluminum/stainless steel enclosure
● Screw-in torque for NPT adapter made of metal/stainless
steel in aluminum/stainless steel enclosure
● Tightening torque for union nut made of plastic
● Tightening torque for union nut made of metal/stainless
steel
Screws for mounting bracket (option)
● Tightening torque for thread M8 or
● Tightening torque for thread M10 or
Retaining screws for rotation of the enclosure
● Tightening torque for aluminum enclosure
● Tightening torque for stainless steel enclosure
7.8
Display, keyboard and auxiliary power
Display and user interface
Buttons
Display
Auxiliary power U
H
Terminal voltage on pressure transmitter
Ripple
Noise
Auxiliary power
Separate supply voltage
SITRANS P320/P420 (mA/HART)
Compact Operating Instructions, 06/2018, A5E38874562-AA
4 Nm (3 ft lb)
6 Nm (4.4 ft lb)
15 Nm (11.1 ft lb)
2.5 Nm (1.8 ft lb)
4 Nm (3 ft lb)
18 Nm
/
-24 UNF
5
16
36 Nm
/
-20 UNF
7
16
3.8 Nm
3.5 Nm
4 buttons for operation directly on the device
● With or without integrated display (optional)
● Cover with inspection window (optional)
HART
● DC 10.5 V ... 45 V
● In the case of intrinsically safe operation 10.5 V ... 30 V
U
SS
U
eff
–
–
7.8 Display, keyboard and auxiliary power
DC
≤ 0.2 V (47 ... 125 Hz)
≤ 1.2 mV (0.5 ... 10 kHz)
Technical data
93
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