Nitto Flowtech MF710, Инструменты операции

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8. Connecting cable
9. Grounding
BOM 1 -Connecting cable
Items
Signal lines
Accessory kit
Accessory kit
provided by users
8 or 15m
8 or 15m
1
2
3
PVC sheathed 2 core shielded cable 2X16/015 (SBWP)
PVC sheathed 2 core shielded cable 2X80/015 RWP
Ship sealed with rubber insulated cable 2X0.5
Two core plastic cable 2X1.0mm
2
（
YHZ
）
Marine soft ethylene-propylene rubber
insulated cable 2X1.0(CEFR-C)
General Color plastic
double-stranded copper wire
Excitation wire
Output signal lines
Name specifications
Qua.
Remarks
The flow sensor generated signal by is very small, when in full-scale only a few mV, so the
sensor should be well grounded, in a good grounding line access must be in accordance with
the ninth Page shown
1
）
From the working principle of electromagnetic flowmeter and flow sensor signals to the circuit analysis,
sensors and ground-side converter must be consistent with the measured medium equipotential.
2
）
Grounding to the earth is zero potential to reduce outside interference. Under normal circumstances,
industrial pipes are metal tubes and grounded in itself, which easily meet the requirements, but in a larger
external electromagnetic field interference, the electromagnetic flowmeter grounding devices should be set up
for other way, with grounding line is greater than the total cross-section 6mm 'multi-strand copper wire, the
grounding line of sensors cannot be received in the motor or other equipment to the public online in order to
avoid the effects of leakage current. Grounding resistance should be less than 10.
3
）
Sensor is installed in the plastic pipe lines or in the pipe insulation, the sensor should be installed at both
ends of the grounding ring or grounding flange, or with a ground electrode a short tube, shown in figure 7.
4
）
Sensor be installed on the Catholic protection of pipelines, it must be installed two ends of grounding ring
(or grounding flange) on the sensors.Figure 8
Grounding requirements of the electromagnetic flowmeter has two aspects:
SENSORS PARTS
08
SENSORS PARTS
TM
Http: // www.flowmeter.cc
SENSORS