APT3700N Smart Pressure Transmitter for Nuclear Service Operation Manual M3700N-K01E
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and the Transmitter outer housing has to show “Field Terminal”. When opening
the housing cover, inside the housing cover is a transmitter Personal
Socket (Terminal Block). Transmitter’s supply power is Personal Socket’s connection
of considers the polarity. HART’s power supply configurator is connected to the
power supply terminal’s “COMM” plate. The site installed outside the Indicator can
connect to the “TEST” pin.
Transmitter’s power service is terminal voltage’s entry of between 12 ~ 45V D.C.
voltage, the power service has to be below the 2% Ripple. Loop resistance is the total
resistance in the loop area and the Intrinsic Safety Barrier usage both includes the
barrier resistance.
Greatest Loop Resistance
Here, the loop resistance of HART communication is recommended of supplying
voltage when it is 24Vdc, it is between value of 250 ~ 550 Ohm.
a. Caution in the finals
Cable should be installed in the greatest capacitive transformer, motor, power supply
unit and same electric static root.
Before finishing, the electric Final Connection (Cap) should be placed.
All parts with screw pair should use the waterproof suture.
(recommended suture silicone type that does not harden and is used in the field)
To avoid material noise, duct should not be installed in both the signal line and power
line. Shield wire should be used at the material noise influence electronically.
Cable should be used that can satisfy the instrument regulation of handling the
temperature above the surrounding temperature or area in a low ground.
There is a need for wire and cable for atmosphere to handle poor gas, solvent,
corrosive gas or liquid.
b. Link Procedure
1) Open the housing cover named “FIELD TERMINAL”.