Post-Mounting Check; Electrical Connection; Required Tool; Connecting Requirements - Endress+Hauser Liquiphant FTL51B Operating Instructions Manual

Electrical connection

16
5.4

Post-mounting check

 Is the device undamaged (visual inspection)?
 Does the measuring device meet the measuring point specifications?
For example:
• Process temperature
• Process pressure
• Ambient temperature
• Measuring range
 Are the measuring point number and labeling correct (visual inspection)?
 Is the device adequately protected from wet conditions and direct sunlight?
 Is the device properly secured?
6 Electrical connection
6.1

Required tool

• Screwdriver for electrical connection
• Allen key for screw of cover lock
6.2

Connecting requirements

6.2.1

Cover with securing screw

In the case of devices for use in the hazardous area with a certain type of protection, the
cover is sealed by a securing screw.
NOTICE
If the securing screw is not positioned correctly, the cover cannot provide secure
sealing.
‣
Open the cover: slacken the screw of the cover lock with a maximum of 2 turns so that
the screw does not fall out. Fit the cover and check the cover seal.
‣
Close the cover: screw the cover securely onto the housing, making sure that the
securing screw is positioned correctly. There should not be any gap between the cover
and housing.
 15 Cover with securing screw
6.2.2

Connecting protective earth (PE)

The protective earth conductor at the device must only be connected if the device' s
operating voltage is ≥ 35 V or ≥ 16 V eff.
DC AC
Liquiphant FTL51B
4
2 x 0.7 Nm
Endress+Hauser
A0039520