Zhejiang Sealand Technology Co.,Ltd.
b) Make the ground as zero potential to reduce interference. It’s easy to meet this
requirement, because generally the pipeline is metal and grounded itself already. However,
the meter should be grounded itself if there is strong interference. Meter ground cable
should be copper material, with section over 4mm
2
, and not connected with common
ground cable of motor, etc.; ground resistance should be less than 10Ω.
3.2.4 Start
Please check following items before operation, and operate according to relevant rules.
a) If the meter is damaged during shipment and installation;
b) If the voltage is same as marked on nameplate;
c) If the fuse is correct;
d) If the meter is grounded properly.
If everything is fine, please conduct zero calibration after first start, at least twice, and should
do this all over again if the meter is moved to another site.
Preparation for zero calibration:
a) The transmitter should be powered on for at least 20min;
b) Run the meter for few minutes to wash away residual impurity inside pipelines;
c) Run the meter until the temperature of sensor becomes common operating temperature;
d) Shut off the outlet valve, to make the sensor full of fluid and the fluid stop flowing.
Please refer to Chapter 7.5 for detail operation of zero calibration.
3.2.5 Others
a) Make sure the meter coaxial with pipeline, and axis deviation no more than 1.5mm if the
meter diameter is 50mm or less.
b) Make sure the gasket of high corrosion resistance, and not touch tube interior.
c) Make sure fasteners in good condition, and well lubricated.
d) Protect the meter from heat during cutting and welding of nearby pipes.
Attention
Wrong installation in hazardous zone will cause explosion!
Please refer to explosion introduction for more details about hazardous zone.
Power voltage will cause severe injury or death!
Cut off the power before installing the transmitter.
Wrong installation will cause damage and low accuracy of the meter!
Follow the introduction, and keep the transmitter working well.
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