Instruction Manual
D102005X012
846 Transducer
June 2017
6
Figure 2. Transducer Modular Construction
A6643
MODULE COVER
MODULE FINAL
ASSEMBLY
ELECTRONIC
CIRCUIT BOARD
MODULE HOUSING
TERMINAL BLOCK
TERMINAL
COMPARTMENT
COVER
Figure 3. Equivalent Circuit
NOTE:
THE 846 IS NOT A CONSTANT RESISTOR IN SERIES WITH AN INDUCTOR. IT IS BETTER
MODELED IN THE LOOP AS A 50 OHM RESISTOR IN SERIES WITH A 6‐VOLT DC VOLTAGE
DROP WITH NEGLIGIBLE INDUCTANCE.
A6325
846
6 V DC
50
OHMS
POWER
SUPPLY
Installation
WARNING
To avoid personal injury or property damage from the sudden release of pressure or air:
D Always wear protective clothing, gloves, and eyewear when performing any installation operations.
D Disconnect any operating lines providing air pressure, electric power, or a control signal to the actuator. Be sure the
actuator cannot suddenly open or close the valve.
D Use bypass valves or completely shut off the process to isolate the valve from process pressure. Relieve process pressure
on both sides of the valve.
D Use lock‐out procedures to be sure that the above measures stay in effect while you work on the equipment.
D Check with your process or safety engineer for any additional measures that must be taken to protect against process
media.
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