Emerson Fisher KC Series Instruction Manual page 8

4195KA, KB, KC, and KS Controllers
BOURDON TUBES
0 to 1.6
0 to 2.5
0 to 4
0 to 6
0 to 10
0 to 16
Metric units
0 to 25
0 to 40
0 to 60
0 to 100
0 to 160
0 to 300
Psig
0 to 30
0 to 60
0 to 100
0 to 200
0 to 300
U.S. units
0 to 600
0 to 1000
0 to 1500
0 to 3000
0 to 5000
1. Minimum or maximum span, or any span in between, may be positioned anywhere within the operating range. For example, if a 0 to 2 bar (0 to 30 psig) sensing element is used
and the minimum span of 1 bar (15 psig) is set, the process indication can be calibrated to a range of −1 to 0 bar (−30 inch Hg to 0 psig), 0 to 1 bar (0 to 15 psig), 1 to 2 bar (15 to 30
psig), 2 to 3 bar (27 to 42 psig) or any value between the operating range minimum and maximum values.
2. Travel stops should be used when the maximum or minimum process pressure will be 5% over or under the calibrated range. For example, a 0 to 2 bar (0 to 30 psig) sensing
element is calibrated for 0.7 to 2 bar (10 to 30 psig), the desired range. The minimum expected pressure is 0 psig and the maximum expected pressure is 2.8 bar (40 psig). Travel
stops must be used to prevent excessive overtravel and undertravel since the maximum allowable overpressure and underpressure is higher than 5% of the 1.4 bar (20 psig) span
which is ±70 mbar (±1 psig).
3. Bourdon tube without travel stops may be pressured to this value without permanent zero shift.
4. Bourdon tube with travel stops set may be pressured to this value without permanent zero shift.
Table 1-5. Optional Process Connections
INPUT RANGE
Bar Psig
Up to Up to
0 to 400 0 to 5000
0 to 400 to 0 to 5000 to
0 to 600 0 to 10,000
0 to 400 to 0 to 5000 to
0 to 600 0 to 10,000
1-8
Table 1-4. Process Sensor (Bourdon Tube) Pressure Ratings and Materials
(1)
SPAN
Minimum Maximum
1
2
2
3.5
7 14
10 20
20 40
20 40
55 70
76 100
160 200
250 350
Psig Psig
15 30
30 60
50 100
100 200
150 300
300 600
750 1000
1100 1500
2200 3000
3700 5000
CONNECTION
Size Material
J
Steel or
J
1/2 NPT external
J
or 1/2 NPT J
stainless
internal
steel
1/2 NPT internal Stainless steel
1/2 NPT external Stainless steel
OPERATING RANGE
Minimum Maximum
Bar
2 −1
4 −1
4 −1
7 −1
−1
−1
0
0
0
0
0
0
Inch Hg Psig
−30
−30
−30
−30
−30
0
0
0
0
0
OUTPUT SIGNAL
RANGE
Bar
Psig
1. If this pressure is exceeded, control may be impaired.
2. If this pressure is exceeded, damage to the controller may result.
Instruction Manual
(2)
OPERATING
(4)
(3)
LIMITS
3 3.3
6 6.6
6 6.6
10 11
20 22
30 33
60 66
60 66
90 103
135 155
270 310
420 482
Psig
42 48
84 96
140 160
280 320
420 480
840 960
1300 1500
1950 2250
3900 4500
6000 7000
Table 1-6. Supply Pressure Data
NORMAL
OPERATING
SUPPLY
(1)
PRESSURE
0.2 to 1.0 1.4
0.4 to 2.0 2.4
3 to 15 20
6 to 30 35
Form 5207
April 2007
STANDARD
MATERIAL
S31600 (316 SST)
STANDARD
MATERIAL
S31600 (316 SST)
MAXIMUM
(2)
PRESSURE LIMIT
2.8
2.8
40
40