Emerson Fisher 4194HA Instruction Manual page 81

Instruction Manual
D200156X012
Key Description
50 Relay ass'y
Relay, 0.2 to 1.0 bar (3 to 15 psig)
Relay, 0.4 to 2.0 bar (6 to 30 psig)
Note
Keys 51, 52, and 53 are required for all controller types. These parts are
included separately with controllers with the anti‐reset windup option
(suffix letter F).
These parts must be used when removing the differential relief valve
(key 55) to perform the flapper alignment procedure for 4194HB and HC
controllers.
51 Relief valve cover plate
52* O‐ring (2 req'd)
53 Machine screw, fill hd
For 4194HA and HB controllers (2 req'd)
For 4194HC controllers (5 req'd)
54 Reset restriction valve
For 4194HB controllers
55 Differential relief valve
For all 4194H controllers w/suffix
letter F, anti‐reset windup option
56 Process and set pt indicator ass'y
Note
The complete process and set pt indicator ass'y includes the indicator
ass'y (key 101) and parts such as the support bracket (key 319) and the
pivot bracket ass'y (key 320). Individual indicator ass'y parts are listed in
two subsections of this parts list: the Process and Set Point Indicator
Assembly (key 56) subsection and the Indicator Assembly (key 101)
subsection. Key numbers for individual indicator parts also appear in
figure 6‐2.
Process and set pt indicator ass'y
w/o remote set (for 4194HS and 4194HSE)
w/remote set (for 4194HSM and 4194HSME)
*Recommended spare parts
Key Description
57 Pressure control block
1 req'd for remote set pt
1 req'd for ext fdback
58 Cap screw, hex hd
(Maximum qty req'd: 6)
61 Process scale
For indicator ass'y
0‐5 psid
0‐10 psid
0‐15 psid
0‐20 psid
0‐30 psid
0‐40 psid
0‐50 psid
0‐60 psid
0‐75 psid
0‐250 mbar differential
0‐0.6 bar differential
0‐1.4 bar differential
0‐1.6 bar differential
0‐2.0 bar differential
0‐20 in. w.c. differential
0‐25 in. w.c. differential
0‐50 in. w.c. differential
0‐75 in. w.c. differential
0‐100 in. w.c. differential
0‐100 percent
0‐10 square root
0‐100 square root
62 Remote set pt ass'y (suffix letter M)
Note
Individual assembly parts are listed in the Remote Set Point Assembly
subsection of the parts list. Key numbers for individual assembly parts
also appear in figure 6‐3.
Remote set pt ass'y (suffix letter M)
0.8 bar (12 psig) span
1.7 bar (24 psig) span
64 Machine screw, fill hd (4 req'd)
65 Feedback link ass'y
71 Machine screw, fill hd
For 4194HA, HB controllers (4 req'd)
For 4194HC controllers (2 req'd)
72 Blowout plug
4194HA, HB, HC Controllers
July 2018
81