Fisher 4195 KB Series Instruction Manual page 8

4195KA, KB, and KC Series
BOURDON TUBES BOURDON TUBES
Psig
0 to 30
0 to 60
0 to 100
0 to 200
0 to 300
0 to 600
0 to 1000
0 to 1500
U.S. units U.S. units
0 to 3000
0 to 5000
0 to 8000
0 to 10,000
0 to 600
0 to 1000
0 to 1500
0 to 1.6
0 to 2.5
0 to 4
0 to 6
0 to 10
0 to 16
0 to 25
Metric units
0 to 40
0 to 60
0 to 100
0 to 160
0 to 300
0 to 550
0 to 600
0 to 40
0 to 60
0 to 100
1. Minimum or maximum span, or any span in between, may be positioned anywhere within the operating range. For example, if a 0 to 30 psig (0 to 2 bar) sensing element is used
and the minimum span of 15 psig (1 bar) is set, the process indication can be calibrated to a range of –30 inch Hg to 0 psig (–1 to 0 bar), 0 to 15 psig (0 to 1 bar), 15 to 30 psig (1 to 2
bar), 27 to 42 psig (2 to 3 bar) or any value between the operating range minimum and maxi mum 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 30 psig (0 to 2 bar) sensing
element is calibrated for 10 to 30 psig (0.7 to 2 bar), the desired range. The minimum expected pressure is 0 psig and the maximum expected pressure is 40 psig (2.8 bar). Travel
stops must be used to prevent excessive overtravel and undertravel since the maximum allowable overpressure and underpressure is higher than 5% of the 20 psig (1.4 bar) span
which is 1 psig (70 mbar).
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
PSIG INPUT PSIG INPUT BAR INPUT BAR INPUT
RANGE RANGE
Up to Up to
or
0 to 5000 0 to 400
female
0 to 5000 to 0 to 400 to
1/2-inch NPT female
0 to 10,000 0 to 600
0 to 5000 to 0 to 400 to
1/2-inch NPT male
0 to 10,000 0 to 600
1–8
Table 1–4. Process Sensor (Bourdon T ube) Pressure Ratings and Materials
(1)
SPAN
Minimum Maximum
Psig Psig
15 30
30 60
50 100
100 200
150 300
300 600
750 1000
1100 1500
2200 3000
3700 5000
6000 8000
7500 10,000
300 600
750 1000
1100 1500
1 2
2 4
2 4
3.5 7
7 14
10 20
20 40
20 40
55 70
76 100
160 200
250 350
420 550
520 700
20 40
55 70
76 100
CONNECTION
Size Material
Steel or
1/2-inch NPT male
1/2-inch NPT
stainless
steel
Stainless steel
Stainless steel
(2)
OPERATING RANGE
(3)
Minimum Maximum
Inch Hg Psig
–30 42
–30 84
–30 140
–30 280
–30 420
0 840
0 1300
0 1950
0 3900
0 6000
0 9600
0 12,000
0 840
0 1300
0 1950
Bar
–1 3
–1 6
–1 6
–1 10
–1 20
–1 30
0 60
0 60
0 90
0 135
0 270
0 420
0 670
0 830
0 60
0 90
0 135
T able 1–6. Supply Pressure Data
Output Signal
Range
Psig Psig
3 to 15
6 to 30
Bar Bar 0.2 to 1.0
0.4 to 2.0
1. If this pressure is exceeded, control may be impaired.
2. If this pressure is exceeded, damage to the controller may result.
OPERATING OPERATING
STANDARD STANDARD
(4) (4)
LIMITS
MATERIAL MATERIAL
Psig
48
96
160
320
480
S31600 (316 SST)
960
1500
2250
4500
7000
11,200 N09902 Nickel Alloy
14,000 (Ni-Span C)
960
K-Monel
1500
(for NACE)
2250
3.3
6.6
6.6
11
22
33
S31600 (316 SST)
66
66
103
155
310
482
772 N09902 Nickel Alloy
965 (Ni-Span C)
66
K-Monel
103
(for NACE)
155
Normal Operating Maximum Pressure
(1)
Supply Pressure Limit
20
35
1.4
2.4
(2)
40
40
2.8
2.8