Instruction Manual
D200158X012
4194S Controllers
July 2018
4
Table 1-2. Available Configurations for Fisher 4194S Controllers
CONTROLLER
(1)
OPTIONS
Internal Auto/Manual Station, Option E
Remote Set Point, Option M
4194S
4194SE
4194SM
4194SME
X
X
X
X
1. Reverse‐acting constructions are designated by an R added to the type number
Table 1-3. Process Sensor (Capsular Element) Pressure Ratings and Materials
UNITS
CAPSULAR
STANDARD RANGES
DIFFERENTIAL SPAN
UNITS
STATIC PRESSURE
OPERATING RANGE
OPERATING
LIMIT
(3)
STANDARD
MATERIAL
Minimum
(1)
Maximum
(2)
Minimum
Inches of
Mercury (bar)
Maximum
Bar
0 to 4.0
0 to 0.7
0 to 1.4
0 to 2.0
0.2
0.4
0.7
1.0
0.4
0.7
1.4
2.0
Bar
-0.4
-.07
-1.0
-1.0
0.4
0.7
1.4
2.0
0.5
1.0
2.1
3.1
N09902
Psid
0 to 5
0 to 10
0 to 20
0 to 30
2.5
5.0
10.0
15.0
5
10
15
20
Psig
-10
-20
-30
-30
5
10
20
30
7.5
15.0
30.0
45.0
1. Span is adjustable between minimum shown and maximum of the capsular element operating range and can be positioned anywhere within this range. For example, if a 0 to 2.0 bar (0 to 30
psid) capsular element is used and the minimum span of 1.0 bar (15 psid), 1.0 to 2.0 bar (15 to 30 psid), or any value between minimum and maximum value of the operating range.
2. Maximum difference between the two input supply pressures.
3. Capsular element may be pressured to this value (after reaching travel stop at upper range limit) without permanent zero shift or structural damage to controller components.
Table 1-4. Supply Pressure Data
OUTPUT SIGNAL RANGE
NORMAL OPERATING SUPPLY PRESSURE
MAXIMUM PRESSURE TO PREVENT INTERNAL DAMAGE
Bar
0 & 1.4
1.4
2.8
0 & 2.4
2.4
2.8
Psig
0 & 20
20
40
0 & 35
35
40
1. If this pressure is exceeded, control stability may be impaired.
2. If this pressure is exceeded, damage to the controller may result.
