Conductivity Of Medium And Sensor Cables; Cable Requirements; Cable Data (Supplied By Siemens Flow Instruments) - Siemens MAG 1100 Operating Instructions Manual

SITRANS F M
2.8.1
Conductivity of medium
and sensor cables
2.8.2

Cable requirements

2.9
Cable data
(Supplied by Siemens
Flow Instruments)
22
2. Technical data
Conductivity of Compact installation:
Liquids with an electrical conductivity ≥ 5 μS/cm.
medium
Remote
installation:
Note
For detection of empty sensor the min. conductivity must always be >50
of the electrode cable when remote mounted is 50 meters (164 ft). Special cable must be used!
For 19" Ex applications with safety barriers special cable cannot be used and the empty pipe
function can therefore not be used. For these applications 25 meters (82 ft) of cable can be used
in order to obtain 0.25% and 50 meters (164 ft) to obtain 0.5%.
For remote MID installations the max. cable length is 3 meters (9.8 ft). For other CT application
standard requirements are applicable.
Note
Empty sensor detection is not available with DN 2, 3 (1/12, 1/8 inch) sizes.
Basic data
Max. cable loop
resistance
Cable glands on sensor
and transmitter:
Basic data No. of conductors
Sqr. area
Screen
Color code
Outside color
Ext. diameter
Conductor
Isolation material
Amb. temperature Flexible installation
Non-flexible installation
Cable parameter Capacity
Inductance
L/R
Standard cable
No. of conductors
Min. sqr. area
Screen
Max. capacitance
Media temperature:
< 100°C/< 210°F
< 200°C/< 390°F
M20x1.5 gland - Cable ø 5-13 mm (0.20 - 0.51 Inch)
½"NPT gland - Cable ø 5-9 mm (0.20 - 0.35 Inch)
Standard cable
(electrode/coil)
1.5 mm
Brown, blue, black
7.8 mm/0,3"
Flexible CU
−5 ... 70°C/−23 ... 160°F
−30 ... 70°C/−20 ... 160°F −30 ... 70°C/−20 ... 160°F
161.50 pF/m / 49.24 pF/ft.
0.583 μH/m / 0.178 μH/ft.
43.83 μH/Ω
Special cable
μ
S/cm and the max. length
Coil cable Electrode cable
2
2
0.5 mm /20 gage 0.2 mm
Yes
N.A. 350 pF/m / 107 pF/ft.
40 Ω
6 Ω
Special cable
(electrode)
3
2
/18 gage 0.25 mm
Yes Double
Brown, blue, black
Grey Grey
8.1 mm/0,32"
Flexible CU
PVC PVC
−5 ... 70°C/−23 ... 160°F
3
2
/22 gage
Yes
N/A
N/A
3
2
/22 gage
N/A
N/A
N/A