Endress+Hauser Liquiphant FTL62 Density, Руководство по эксплуатации, Страница: 21 / 36

Liquiphant FTL62 Density Electrical connection
Hauser 21
1
1
1
2
2
3
3
4
4
5
5
-
.
A0039632
 15 Density measurement with Density Computer FML621
1 Liquiphant Density → Pulse output
2 Temperature sensor, e.g. 4 to 20 mA output
3 Pressure transmitter 4 to 20 mA output required for changes in pressure >6 bar
4 Liquiphant Density Computer FML621 with display and operating unit
5 PLC
The measurement can be affected by:
• Air bubbles at the sensor
• Unit not fully covered by medium
• Solid media buildup on sensor
• High flow velocity in pipes
• Severe turbulence in the pipe due to inlet and outlet runs that are too short
• Corrosion of the fork
• Non-Newtonian - non-ideal viscous - behavior of the fluids
6.3.2 Connecting the cables
Required tools
• Flat-blade screwdriver (0.6 mm x 3.5 mm) for terminals
• Suitable tool with width across flats AF24/25 (8 Nm (5.9 lbf ft)) for M20 cable gland