93
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LCI40
Series IOM
7 ServiCe
information
Failure of two or more of the upper
circuits may indicate a measuring
tube error. There may be product
in the housing. If this is the case,
depressurize the process line and
immediately remove the measuring
device from the process line.
The specified values are for guidance only.
•
Resistance values outside of the ranges specified
above may indicate a circuit error. The device may be
in “start-up” mode or indicate measuring errors.
•
All circuits should be isolated with respect to earth
(device housing) and each other >20 M
Ω
.
•
A drive/sensor coil short circuit can cause the device
to be put into “Startup mode.”.
Typical Rtd Resistances
Resistance (Ohm)
Pt500
Compensation Lines
Red/Brown
Brown/Orange
LCMass
®
600 - all sizes
540 at 68°F / 20°C
0.1
7.2 Sensor or drive Coil Fault
Typical Values For Sensor Or Drive Coils
Size
Resistance (Ohm)
Driver
Sensor A - Sensor B
Black/Grey
Purple/Green - White/Yellow
Cryo 446°F / 230°C
752°F / 400°C
Cryo 446°F / 230°C /
752°F / 4 00°C
LCMass
®
600
- 08
72
12
640
1455
LCMass
®
600
- 10
68
6
640
1455
LCMass
®
600
- 15
68
6
640
1455
LCMass
®
600
- 25
42
12
342
755
LCMass
®
600
- 50
42
52
342
755
LCMass
®
600
- 80
42
52 4
43
960
LCMass
®
600
- 100
42
54
342
755
LCMass
®
600
- 150
42
54
375
852
LCMass
®
600
- 200
42
54
375
852
LCMass
®
600
- 250
42
54
375
852
Caution
Disposal must be carried out
in accordance with legislation
applicable in your country.
7.3 disposal