Nitto Flowtech MF710, Operation Instruments

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Ⅱ.
Power line connecting
Operation principle and requirements
：
This series of transmitter have the following power supply types.
1) AC Power supply range
85VAC-265VAC, 50Hz power ~ 10VA (including sensors)
2) DC power supply range
18VDC 36VDC; power ≤ 10W (including sensors)
2. Power line connecting
Operation steps:
Before connecting the power supply, please see the nameplate and part of the electrical terminals and the
types of instructions ,in order to avoid misoperation to make instrument error or damage
1. Instrument Power supply
Instrumentation and electrical installation work must be connected by a certain qualified staff to implement. Be
sure to operate before reading this operation manual carefully to avoid wrong operation caused by solid work
instrument error or damage. Converter must have a good grounding in order to protect their personal safety.
Use in hazardous area must be provided by columns according to special "EX" in the operating manual
instructions. Instrument should be in the electrical connection before power run.
1.The lid of Instrument just open in the wiring, once opening the lid of instrument will affect protection performance. It
should be back to the factory sealed lid state after the wiring finished.
2, In order to ensure the insulation of instrument performance, to prevent the instrument as a result of wet insulation
caused by poor rains ,in the outdoor wiring should be avoided.
3, with a threading instrument connectors, cable connectors must be approved by
threading into the instrument cavity (see circle). After the wiring , waterproof joints
should be tightened to ensure that moisture and corrosive gases do not enter
the electronic part.
4, Input and output lines recommend the use of the installation of conduit, conduit tube be recommended thick solid
brass or soft metal pipes Road. Conduit should be noted that the order to prevent flood water flowing into the conduit or
conduit into the internal instrumentation. Input power line and signal lines should be separated through their respective
special perforated cavity into the instrument, prohibited parallel and banding together.
5, The choice of input and output cables to reference the following description:
Excitation, a dedicated flow meter signal cable is provided by our company.
Power Line: owned by the user, customer can option YH Z-2xlmm2 two soft-core rubber insulated cable, cable length
should concern voltage drop.
Output line: owned by the user, customer can option RVVP2X16 / 0 15 PVC insulated sheathed wire shielding, cable
length will affect the load characteristics.
1, open the rear cover of the transmitter
2, a dedicated power supply input line threading through the hole (Waterproof connector) into the instrument cavity.
3, the grounding wire connected to the transmitter side of the ground.
4, AC (AC) power lines L and N lines were connected to the converter side of the L and N-side.
Direct current (DC) power supply to power + lines and - receiving line side converter, respectively, the + terminal
and - terminal.
5, water-proof connector threading screw instrumentation and to return to the status of the factory sealed.
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