Instruction Manual
D200156X012
4194HA, HB, HC Controllers
July 2018
3
1‐1‐
Introduction
Scope of Manual
This instruction manual provides installation, operating, calibration, maintenance, and parts ordering information for
the 4194HA, HB, and HC (high static pressure) differential pressure indicating controllers.
Portions of this manual apply only to specific 4194HA, HB, and HC controller configurations. These configurations are
indicated by letter suffixes in the type number that correspond to the mode and option designated in table 1‐2.
The specific controller type number (with letter suffixes) is located on the nameplate (figure 1‐1). Refer to table 1‐2 for
the definition of each 4194H controller type number.
Figure 1‐1. Fisher 4194H Differential Pressure Controller
W5907
W5908
NAMEPLATE
Do not install, operate, or maintain a 4194HA, HB, or HC controller without being fully trained and qualified in valve,
actuator, and accessory installation, operation, and maintenance.
To avoid personal injury or property damage, it is
important to carefully read, understand, and follow all the contents of this manual, including all safety cautions and
warnings. I
f you have any questions about these instructions, contact your
Partner before proceeding.
