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Type 2500
Performance (continued)
(2)
Repeatability
: 0.2% of displacer length or
displacement force change
(2)
Deadband
(except differential gap
(4)
controllers
): 0.05% of proportional band or
span
Typical Frequency Response
degree phase shift at 100% proportional band
with output piped to typical instrument bellows
using 6.1 meters (20 feet) of 1/4-inch tubing
Ambient Operating Temperature Limits
For ambient temperature ranges and guidelines
for use of the optional heat insulator assembly,
see figure 2. Relay temperature limits are:
Standard Construction: -40 to 71_C (-40 to
160_F)
High-Temperature Construction: -18 to 104_C
(0 to 220_F)
1. Controllers are field adjustable between direct or reverse action. The letter R in the type number indicates that the controller/transmitter shipped from the factory set for reverse action (see
changing controller action procedures). The letter C in the type number indicates that a pointer is attached to the torque tube shaft providing visual monitoring of torque tube motion.
2. This term is defined in ISA Standard S51.1.
3. Control and stability may be impaired if the maximum pressures are exceeded.
4. Adjusting the span of the differential gap controller is equivalent to adjusting the deadband.
5. These statements apply only to units sized to produce a full output change for a 100% level change at the maximum proportional band dial setting.
6. The pressure/temperature limits in this document, and any applicable standard or code limitation should not be exceeded.
7. Natural gas to contain no more than 20 ppm of H
SENSOR TYPE
249, 249B, 249BP, 249K, 249W
249C, 249CP, 249W
249L
249V
1. For 249W, with standard 812 mm (32-inch) displacer.
2. For 249W, with standard 356 mm (14-inch) displacer.
3. With standard 305 mm (12-inch) flange-face-to-displacer centerline dimension only.
OUTPUT SIGNAL RANGE
0.2 to 1 bar (3 to 15 psig)
0.4 to 2 bar (6 to 30 psig)
1. Consult your Emerson Process Management sales office about gauges in other units.
2. Control and stability may be impaired if this pressure is exceeded.
3. At zero or maximum proportional band or specific gravity setting.
4. At setting in middle of proportional band or specific gravity range.
5. If air consumption is desired in normal m
4
Table 1. Specifications (Continued)
(2)
: 4 Hz and 90
(6)
S.
2
Table 2. Standard Displacer Volumes
Table 3. Supply Pressure Data
STANDARD SUPPLY
NORMAL OPERATING
AND OUTPUT
SUPPLY PRESSURE
PRESSURE GAUGE
(1)
INDICATIONS
Bar
0 to 30 psig
1.4
0 to 60 psig
2.4
3
/hr at 0_C and 1.01325 bar, multiply scfh by 0.0258.
Typical Ambient Temperature Operating
Influence
Output pressure changes 1.5% per 10_C
(50_F) change in temperature at 100%
proportional band when using a standard wall
torque tube with 249 Series sensors
Hazardous Area Classification
2500 and 2503 Series controllers/transmitters
comply with the requirements of ATEX Group II
Category 2 Gas and Dust
Supply and Output Connections
1/4-inch NPT female
Maximum Working Pressure (sensors only)
Refer to the appropriate sensor instruction
manual
STANDARD VOLUME,
Liters
1.6
1.0
1.9
(3)
1.3
AIR CONSUMPTION AT
NORMAL OPERATING
(2)
SUPPLY PRESSURE
Psig
Minimum
20
4.2 scfh
35
7 scfh
Instruction Manual
STANDARD VOLUME,
Cubic Inches
100
60
120
80
SUPPLY PRESSURE
(3)
(4)
Maximum
(5)
(5)
27 scfh
(5)
(5)
42 scfh
Form 1013
December 2005
(1)
(2)
(3)
MAXIMUM
3 bar (45 psig)
3 bar (45 psig)
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