Endress+Hauser Deltabar PMD78B - Level Measurement Applications

Electrical connection Deltabar PMD78B HART
12 Endress+Hauser
6.2 Connecting the device
1
A0043806
1 Connection compartment cover
Housing thread
The threads of the electronics and connection compartment can be coated with an anti-
friction coating.
The following applies for all housing materials:
Do not lubricate the housing threads.
6.2.1 Supply voltage
• Ex d, Ex e, non-Ex: supply voltage: 10.5 to 35 V
DC
• Ex i: supply voltage: 10.5 to 30 V
DC
• Nominal current: 4 to 20 mA HART
The power unit must be safety-approved (e.g. PELV, SELV, Class 2) and must comply
with the relevant protocol specifications. For 4 to 20 mA, the same requirements apply
as for HART.
Depending on the supply voltage when the device is switched on
• the background lighting is switched off (supply voltage <15 V)
• the Bluetooth function (order option) is also switched off (supply voltage <12 V)
6.2.2 Terminals
• Supply voltage and internal ground terminal: 0.5 to 2.5 mm
2
(20 to 14 AWG)
• External ground terminal: 0.5 to 4 mm
2
(20 to 12 AWG)
6.2.3 Cable specification
• Protective ground or grounding of the cable shield: rated cross-section > 1 mm
2
(17 AWG)
Rated cross-section of 0.5 mm
2
(20 AWG) to 2.5 mm
2
(13 AWG)
• Cable outer diameter: Ø5 to 12 mm (0.2 to 0.47 in) depends on the cable gland used (see
Technical Information)