Badger Meter SRD/SRI Valve Positioners - Manual (Page 22)

Entry for Remote Potentiometer – Code D
For remote mounting main unit
This remote application is used in applications where high
temperatures or vibration are present and can result in
negative influences to the control It can also be used in
places not easy to reach, to ensure an easier handling of the
unit, or for cylinders with large strokes
The Positioner SRD991 (Remote Unit) is mounted far away
from the valve or cylinder in a safe environment
The Potentiometer unit is mounted on the valve or cylinder
This potentiometer unit can be made of a derivative version
of the SRI990 positioner (only potentiometer in the housing)
or of an external potentiometer like a linear potentiometer
for application onto cylinders, for example
This option is to be used with a potentiometer unit 3-wire
system with ca 5 kOhm resistance
If the following requirements are observed, the setup
is insensitive to electrical disturbances caused by high
electromagnetic fields, EMC and HF-radiation
• Cable Length max is 10 m (32 ft)
• Cable Specification (not supplied):
◊ 3-wire twisted pair, shielded
◊ Shield needs to be connected on both ends to the
internal ground
◊ Shield endings need to be kept very short when
connecting to the ground
◊ An HF cable gland is not required
For more information about remote mounting please consult
TI EVE0105_R
Additional Equipment
Page 22 August 2014 POS-UM-00223-EN-02