Single-Acting Relays; Supply Pressure Sensor - Emerson FIELDVUE DVC6200f Instruction Manual

DVC6200f Digital Valve Controller
ADJUSTMENT DISC
5

Single-Acting Relays

For instrument level PD only:
If the unused port is monitoring
pressure, ensure that the pressure
source conforms to ISA Standard
7.0.01 and does not exceed the
pressure supplied to the instrument.
Failure to do so could result in
personal injury or property damage
caused by loss of process control.
Single-Acting Direct Relay
The single-acting direct relay is designated by "Relay
C" on a label affixed to the relay itself. Relay C
requires no adjustment.
Single-Acting Reverse Relay
The single-acting reverse relay is designated by
"Relay B" on a label affixed to the relay itself. Relay B
is calibrated at the factory and requires no further
adjustment.
202
W9034
Figure 5-1. Relay A Adjustment (Shroud Removed for Clarity)
WARNING
FOR SINGLE-ACTING DIRECT RELAYS:
ROTATE ADJUSTMENT DISC IN THIS
DIRECTION UNTIL IT CONTACTS THE
BEAM
FOR DOUBLE-ACTING RELAYS:
ROTATE ADJUSTMENT DISC IN
THIS DIRECTION TO DECREASE
OUTPUT PRESSURE
FOR DOUBLE-ACTING RELAYS:
ROTATE ADJUSTMENT DISC IN
THIS DIRECTION TO INCREASE
OUTPUT PRESSURE

Supply Pressure Sensor

TB > Configure/Setup > Calibration > Supply
Field Communicator
Pressure
Note
The pressure sensor is calibrated at
the factory and should not require
calibration.
To calibrate the supply pressure sensor, connect an
external reference gauge to the output side of the
supply regulator. The gauge should be capable of
measuring maximum instrument supply pressure.
Select Follow the prompts on the Field Communicator
display to calibrate the instrument's supply pressure
sensor.
1. Select a) Zero Only, or b) Zero and Span (gauge
required).
a. If Zero Only calibration is selected, adjust the
supply pressure regulator to remove supply
pressure from the instrument. Press OK. Once
calibration is complete, go to step 5.
b. If Zero and Span calibration is selected, adjust
the supply pressure regulator to remove supply
pressure from the instrument. Press OK. Adjust the
supply regulator to the maximum instrument supply
pressure. Press OK. Proceed with step 2.
November 2010