Instruction Manual
D200156X012
4194HA, HB, HC Controllers
July 2018
80
Controller Parts (figure 6‐1)
Key Description
Note
Figure 6‐1 shows key numbers for the common construction of all
controller types. Figure 6‐1 continues over several pages. Be sure to
check all pages of figure 6‐1 to find the common key numbers.
Key Description
1 Case and cover ass'y
For use w/ or w/o int set pt and
w/o remote or ext set pt
For use w/remote set pt and w/o
int or ext set pt
2 Nameplate
3 Frame
4* Gasket
for use between internal frame
and frame manifold (key 135)
5* Gasket
for use between frame manifold
(key 135) and positive feedback
tubing manifold (key 136)
6 Machine screw, fill hd (6 req'd)
7* O‐Ring
For all types w/either
1/4‐18 NPT internal process connection or
1/2‐14 NPT external process connection
w/o remote set pt (1 req'd)
w/remote set pt (2 req'd)
w/ext fdback and w/o remote set pt (2 req'd)
w/ext fdback and w/remote set pt (3 req'd)
8* O‐Ring (3 req'd)
9 Flexure pivot ass'y
10 Machine screw, fill hd (4 req'd)
11* Flapper ass'y
12 Cap screw, hex socket
For flapper ass'y (key 11) (1 req'd)
Plain washer (key 13) not req'd
17 Adjustable set pt pivot ass'y
18 Relay nozzle tubing ass'y
19 Machine screw, fill hd (3 req'd)
20 Plain washer (2 req'd)
21 Nozzle ass'y
22 Washer (2 req'd)
23 Set pt beam ass'y
25 Proportional band knob
26 Retaining clip
27 E‐ring
28 Set pt beam bias spring
Key Description
29 Set pt beam shoe
30 Machine screw (2 req'd)
31 Bellows bracket
32 Bellows adj bracket
33 Bellows adj spring
34 Machine screw, fill hd (2 req'd)
35 Machine screw, hex hd (2 req'd)
36 Proportional band indicator cover
37 Self‐tapping screw
For indicator ass'y (key 101) (4 req'd)
38 Self‐tapping screw (9 req'd)
39 Supply gauge tubing ass'y
40 Proportional tubing ass'y
For 4194HA or HB controllers
For 4194HC controllers
41 Plug
For all 4194HA controllers (1 req'd)
For all 4194HB controllers w/ext
feedback (1 req'd) except for
4194HBF, HBFM, HBFE, and
KBFME, not required
For 4194HC, HCM, HCE, and CME (2 req'd)
For 4194HCF, HCFM, HCFE,
and HCFME (1 req'd)
42 Reset valve tubing ass'y
For all 4194HB controllers
43 Reset tubing ass'y
For all 4194HB controllers
For all 4194HC controllers
44 Relief valve tubing ass'y
For 4194HBF, HBFE, HBFM,
and HBFME only
For 4194HCF, HCFE, HCFM,
and HCFME only
Note
One type of pressure gauge is used for both output pressure and supply
pressure indication.
46* Output pressure gauge
47* Supply pressure gauge
48* Bellows ass'y (2 req'd)
Output ranges:
0.2 to 1.0 bar (3 to 15 psig)
0.4 to 2.0 bar (6 to 30 psig)
49 Bellows beam
0.2 to 1.0 bar (3 to 15 psig)
0.4 to 2.0 bar (6 to 30 psig)
*Recommended spare parts
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