Rosemount 2501 Specifications
Product Data Sheet
00813-0100-2501, Rev AB
January 2020
Rosemount™ 2501 Solids Level Switch
Rotating Paddle
■Universal voltage electronics
■Rotation principle is unaffected by caking
■Protected motor (friction clutch and double bearing)
■Modular design
■Temperature range from -40 to 2012 °F (-40 to 1100 °C)
Rosemount 2501 |
January 2020 |
Introduction
Measurement principles
The Rosemount™ 2501 Solids Level Switch uses a synchronous motor for driving a paddle (measuring vane) to rotate 360 degrees.
When the vane of the paddle is not covered by a solids medium, a spring pulls the motor and it switches a lug to the left position (Figure 1, left illustration). The signal output indicates an 'uncovered' state and the motor rotates the paddle.
When a solids medium covers the vane of the paddle, and causes the rotation to stop, the lug is switched to the right position (Figure 1, right illustration). The signal output indicates a 'covered' state due to a rising level of material, and the motor is stopped until the vane becomes uncovered.
Figure 1: Switching Lug Function
A |
C |
D |
B |
A.Switching lug in left position ('uncovered' state)
B.Switching lug in right position ('covered' state)
C.Switch for stopping the motor
D.Switch for signal output
The electrical outputs vary depending on the power supply selected when the Rosemount 2501 was ordered. See Ordering information for the Power Supply option codes, and Electrical data for the electrical specifications.
Contents |
|
Introduction...................................................................................................................................................................................... |
2 |
Ordering information........................................................................................................................................................................ |
5 |
Spares and accessories.................................................................................................................................................................... |
10 |
Specifications.................................................................................................................................................................................. |
14 |
Product certifications...................................................................................................................................................................... |
20 |
Dimensional drawings..................................................................................................................................................................... |
21 |
2 |
Emerson.com/Rosemount |
January 2020 |
Rosemount 2501 |
Key features and benefits
■Ideal for point level detection of most bulk solids materials
■Simple to install, maintenance-free measurement principle
■Reliable technology, unaffected by dust, electrostatic charge and clogging/caking
■Robust NEMA® Type 4X housing(1), which is suitable for use in extreme process conditions
■Designed for operation in temperature extremes of -40 °F to 2012 °F (-40 °C to 1100 °C)
■Different models to suit different sizes/types of process vessels and storage silos
■Generous space within housing with rotatable electronics, enabling easy wiring for quick installation
■Encapsulated ball bearing with shaft sealing, ideal for dusty applications
■Versatile installation in many types of vessel
— It can be installed in vertical, horizontal, or angled positions with various extensions options available.
■Compact boom length from 2¾ in. (70 mm) is particularly suited for small process vessels
Applications
■Materials with most density types
■Silos/vessels with limited space or large storage silos
■Environments with high levels of dust/ash present
■Overfill prevention
■High-reliability and high-safety requirements
■High-temperature applications
(1)The NEMA Type 4X rating requires the process connection (including extension) to be stainless steel and the process temperature to not exceed 176 °F (80 °C). In all other cases, including when a sliding sleeve is used or a Rosemount 2501 with Application Profile K, the housing is IP66/NEMA Type 4 rated.
Emerson.com/Rosemount |
3 |
Rosemount 2501 |
January 2020 |
Selection guide
Table 1: Rosemount 2501 Selection Guide
Type of installation |
Model option codes |
|
|
|
2501L |
2501M |
2501R |
2501S |
2501K |
2501J |
Full silo detection |
* |
*(1) |
* |
* |
* |
* |
On-demand detection |
* |
|
*(1) |
*(1) |
* |
* |
Empty silo detection |
* |
|
*(1) |
*(1) |
* |
* |
Vertical mounting |
* |
* |
*(1) |
*(1) |
|
* |
Angled mounting (top) |
* |
*(2) |
|
|
|
* |
Horizontal mounting |
* |
|
|
|
* |
* |
Angled mounting |
* |
|
|
|
|
* |
(bottom) |
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|
|
(1)Consider the maximum permitted mechanical traction force. See Operating conditions for the maximum supported mechanical loads.
(2)Available only with the "bearing at tube end" option (maximum of 10°).
4 |
Emerson.com/Rosemount |
January 2020 |
Rosemount 2501 |
Ordering information
Table 2: Rosemount 2501 Ordering Information
The starred offerings ( ) represent the most common options and should be selected for best delivery. The non-starred offerings are subject to additional delivery lead time.
Model |
Product description |
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2501 |
Rosemount Solids Level Switch - Paddle |
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Application profile |
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L |
Full or empty detection in small vessel, low mechanical resistance |
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M |
Full detection in medium vessel, medium mechanical resistance |
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R |
Full detection in large vessel, medium mechanical resistance (maximum 4 kN load) |
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S |
Full detection in large vessel, high mechanical resistance (maximum 28 kN load) |
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J |
Empty detection in medium or large vessel, low or medium mechanical resistance |
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K(1) |
Empty detection in medium or large vessel, high mechanical resistance |
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Operating temperature |
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Applications |
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1 |
Maximum 176 °F (80 °C) |
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All |
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2(2) |
Maximum 302 °F (150 °C) |
|
All except S |
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3(2) |
Maximum 482 °F (250 °C) |
|
All except S |
|
4(2) |
Maximum 662 °F (350 °C) |
|
L and J only |
|
5(3)(2) |
Maximum 1112 °F (600 °C), |
|
All except S and K |
|
6(2) |
Maximum 2012 °F (1100 °C) |
|
L and M only |
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Process operating pressure |
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Temperatures |
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A |
Maximum 11.6 psi (0.8 bar) |
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All codes |
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B |
Maximum 73 psi (5 bar) |
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1, 2, and 3 |
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C |
Maximum 145 psi (10 bar) |
|
1, 2, and 3 |
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Materials of construction: process connection |
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Applications |
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A(4)(5) |
Aluminum |
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All except S |
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D(6) |
303/304 Stainless steel (1.4301/1.4305) |
|
All codes |
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S(6) |
316L Stainless steel (1.4404) |
|
L, M, and J |
|
Materials of construction: extension |
Applications |
Materials (PC) |
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A(5)(7)(8) |
Aluminum |
M, J, and K |
A and D |
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D(6)(9) |
303/304 Stainless steel (1.4301/1.4305) |
All codes |
A and D |
|
F(6) |
316L Stainless steel (1.4404) |
L, J and M |
S |
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Conduit entry/cable threads |
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1 |
M20 x 1.5, 1 off screwed cable gland for CE, ATEX, and IECEx |
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2 |
M20 x 1.5, 2 off screwed cable gland |
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4 |
½-in. NPT tapered, ANSI B1.20.1 (1 off conduit + 1 off Ex-d blind plug) |
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Emerson.com/Rosemount |
5 |
Rosemount 2501 |
|
January 2020 |
||
Table 2: Rosemount 2501 Ordering Information (continued) |
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Process connection size |
Applications |
Temperatures |
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1(10)(11) |
1-in. / 25 mm (DN25) / 25A |
L |
1, 2, 3 |
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A(10) |
1¼-in. / 32 mm (DN32) / 32A |
All except K |
1, 2, 3 |
|
5 |
1½-in. / 40 mm (DN40) / 40A |
All except K |
All |
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2(12) |
2-in. / 50 mm (DN50) / 50A |
All except K |
All |
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3(12) |
3-in. / 80 mm (DN80) / 80A |
All except K |
All |
|
4 |
4-in. / 100 mm (DN100) / 100A |
All |
All |
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B(5)(10)(11) |
M30 x 1.5 mm |
L only |
1 only |
|
C(5)(10)(11) |
M32 x 1.5 mm |
L only |
1, 2, 3 |
|
Process connection rating |
Sizes |
Materials (PC) |
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AA |
ASME B16.5 Class 150 flange |
2, 3, and 4 |
All except A |
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DZ(13) |
EN1092-1 PN6 flange |
A and 4 |
All(14) |
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DA |
EN1092-1 PN16 flange |
2 and 4 |
All except A |
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HA(5) |
150x150 flange, 4 off ø18 mm fixing holes |
4 |
All except S |
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HB(5) |
150x150 flange, 4 off ø14 mm fixing holes |
4 |
All except S |
|
NN |
For use with non-flange process connections |
All except 3 and 4 |
All |
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Process connection type |
Ratings |
Applications |
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F |
Flat face flange |
DZ, DA, HA, and HB |
All |
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R |
Raised face flange |
AA |
All |
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G |
BSPP (G) thread |
NN |
All except K |
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N |
NPT thread |
NN |
All except K |
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M(5)(15) |
Metric thread |
NN |
L |
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C(15) |
Tri Clamp |
NN |
L, M, and J |
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Power supply |
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A |
230 Vac 50-60 Hz, motor speed: 1 revolution per minute |
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B |
115 Vac 50-60 Hz, motor speed: 1 revolution per minute |
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C |
48 Vac 50-60 Hz, motor speed: 1 revolution per minute |
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D |
24 Vac 50-60 Hz, motor speed: 1 revolution per minute |
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E |
24 Vdc, motor speed: 1 revolution per minute |
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F |
24 Vdc / 22 to 230 Vac universal voltage, motor speed: 1 revolution per minute |
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R |
230 Vac 50-60 Hz, motor speed: 5 revolutions per minute |
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S |
115 Vac 50-60 Hz, motor speed: 5 revolutions per minute |
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T |
48 Vac 50-60 Hz, motor speed: 5 revolutions per minute |
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U |
24 Vac 50-60 Hz, motor speed: 5 revolutions per minute |
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V |
24 Vdc, motor speed: 5 revolutions per minute |
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W |
24 Vdc / 22 to 230 Vac universal voltage, motor speed: 5 revolutions per minute |
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6 |
Emerson.com/Rosemount |
January 2020 |
|
Rosemount 2501 |
||
Table 2: Rosemount 2501 Ordering Information (continued) |
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Paddle length |
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Applications |
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A(16) |
Standard length 2.76-in. (70 mm) |
|
L |
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B(16) |
Standard length 3.93-in. (100 mm) |
|
L |
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C(16) |
Standard length 4.92-in. (125 mm) |
|
K |
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D(16) |
Standard length 5.90-in. (150 mm) |
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L, J, and K |
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G |
Standard length 7.87-in. (200 mm) |
|
L, J, and K |
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H |
Standard length 9.84-in. (250 mm) |
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L, J, and K |
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J |
Standard length 11.8-in. (300 mm) |
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L, J, and K |
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R |
Rope fixings only (rope not included) |
|
R |
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E |
Extended shaft/tube, customer specified length in tenths of inches |
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L, M, J, and K |
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M |
Extended shaft/tube, customer specified length in millimeters |
|
L, M, J, and K |
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F |
Extended rope, customer specified length in tenths of inches |
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R and S |
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N |
Extended rope, customer specified length in millimeters |
|
R and S |
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Specific extended length |
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00000 |
Factory default length (only if Paddle Length A, B, C, D, G, H, J, or R selected) |
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XXXXX |
Specific customer-specified length in tenths of inches or millimeters (XXXX.X inches or XXXXX mm) |
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||
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Product certifications |
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Conduit entries |
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NA |
No hazardous locations certifications |
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All codes |
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ND(17) |
ATEX Dust certification |
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All codes |
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NK(17) |
IECEx Dust certification |
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All codes |
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NL(17) |
American DIP |
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4 |
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E2(17) |
INMETRO Flameproof |
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4 |
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E5(17) |
American Flameproof/Dust certification |
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4 |
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E7(17) |
IECEx Flameproof/Dust certification |
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4 |
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E8(17) |
ATEX Flameproof/Dust certification |
|
4 |
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EM(17) |
Technical Regulations Customs Union (EAC), Dust certification |
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All codes |
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K1(17) |
ATEX Flameproof/Increased Safety/Dust certification |
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All codes |
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K7(17) |
IECEx Flameproof/Increased Safety/Dust certification |
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All codes |
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KB(17) |
American and Canadian DIP |
|
4 |
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KM(17) |
Safety/Dust certification |
|
All codes |
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KY(17) |
American and Canadian Flameproof/Dust certification |
|
4 |
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KZ(17) |
American and Canadian Ordinary Location (Unclassified, safe area) certification |
4 |
|
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Measuring vane |
Applications |
Materials(18) |
|
|
A |
1.02 x 3.03 inches (26 x 77 mm), boot-shaped vane |
L |
A and D |
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B |
1.10 x 3.86 inches (28 x 98 mm), boot-shaped vane |
L |
All |
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C |
1.38 x 4.17 inches (35 x 106 mm), boot-shaped vane |
All except K |
All |
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|
Emerson.com/Rosemount |
7 |
Rosemount 2501 |
|
January 2020 |
||
Table 2: Rosemount 2501 Ordering Information (continued) |
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D |
1.57 x 3.86 inches (40 x 98 mm), boot-shaped vane |
All |
All |
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K |
1.57 x 3.15 inches (40 x 80 mm), rectangular notched vane |
L |
D and F |
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L |
1.97 x 3.86 inches (50 x 98 mm), rectangular vane |
All |
A and D |
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M |
1.97 x 5.90 inches (50 x 150 mm), rectangular vane |
All |
A and D |
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N |
1.97 x 9.84 inches (50 x 250 mm), rectangular vane |
All |
A and D |
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P |
3.86 x 3.86 inches (98 x 98 mm), rectangular vane |
All |
All |
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Q |
3.86 x 5.90 inches (98 x 150 mm), rectangular vane |
All |
A and D |
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R |
3.86 x 9.84 inches (98 x 250 mm), rectangular vane |
All |
A and D |
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U(6)(19) |
3.86 x 3.93 inches (98 x 100 mm), single-sided hinged vane |
All |
All |
|
V(6)(19) |
3.86 x 7.87 inches (98 x 200 mm), double-sided hinged vane |
All |
All |
|
W(4) |
3.86 x 9.84 inches (98 x 250 mm), rubber vane, up to 176 °F (80 °C) |
All |
A and D |
|
Y |
Split fin fixing for vane (vane not included) |
All |
A and D |
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Options (include with selected model number) |
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Calibration data certification |
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Q4 |
Certificate of functional test |
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Alarm |
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AF(20) |
Fail-safe alarm |
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Weather protection |
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P2 |
Weather protection cover |
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Welded flange (21) |
|
Paddle length |
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W1 |
Process connection flange welded to paddle tube |
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All except A and B |
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W2(22) |
Process connection flange welded to paddle tube, including reinforcing rib |
All except A, B, C |
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|
Specific welded flange angle |
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XX |
Specific customer-specified angle of flange (0° to 45°) (maximum 30° with Welded Flange W2) |
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||
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Paddle extension(23) |
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PE1 |
Pendulum extension, 7.87 in. (200 mm), vertical or horizontal installation |
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PE2 |
Pendulum extension, 19.7 in. (500 mm), vertical installation |
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PE3 |
Pendulum extension, 39.4 in. (1000 mm), vertical installation |
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PE4 |
Rope extension, 78.7 in. (2000 mm), vertical installation |
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Sliding sleeve(24) |
Temperatures |
Pressures |
|
|
S1(25) |
Sliding sleeve, without over-pressure |
All |
A |
|
S2 |
Sliding sleeve, with over-pressure |
1, 2, 3 |
All |
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Radial shaft sealing |
Temperatures |
Pressures |
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T1 |
FPM |
1 |
A |
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T2 |
PTFE |
1 and 2 |
A |
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8 |
Emerson.com/Rosemount |
January 2020 |
|
Rosemount 2501 |
|||
Table 2: Rosemount 2501 Ordering Information (continued) |
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||
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Alternative component material(26) |
|
Temperatures |
Applications |
|
|
CM1 |
Ball bearings in stainless steel |
|
1, 2, and 3 |
All except S |
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Housing heating (20) |
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HH1 |
Heating of housing, for temperature range -4 to -40 °F (-20 to -40 °C) |
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Additional bearings |
|
Applications |
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||
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BR1(27) |
Additional bearings for paddle extension tube |
|
M |
|
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Extended product warranty |
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WR5 |
5-year limited warranty |
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Typical model number: 2501 L 1 A A D 1 5 NN G A B 00000 NA D |
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(1)Application code K requires a 4-in./DN100 flanged process connection.
(2)Temperature-extended-shaft dimension is automatically added for this option, see Table 7.
(3)Maximum overpressure is 1.45 psi (0.1 bar).
(4)Available when Process Operating Temperature code 1 is selected.
(5)Available when Process Operation Pressure code A is selected.
(6)Not available when Process Operating Temperature code 6 is selected.
(7)Not available when Application Profile J and Process Operating Temperature codes 2 or 3 are selected.
(8)Not available when Application Profile K and Materials of Construction: Process Connection code D is selected.
(9)Not available when Application Profile K and Materials of Construction: Process Connection code A is selected
(10)Not available when Materials of Construction: Process Connection Material code S is selected.
(11)Not available when Materials of Construction: Extension Material code A is selected.
(12)Not available when Materials of Construction: Process Connection code A is selected.
(13)Available when Operating Pressure codes A or B are selected.
(14)Materials of Construction: Process Connection code A is not available when Process Connection Size code 4 is selected.
(15)Not available when Process Operating Temperature codes 4, 5, or 6 is selected.
(16)Not available when Operating Temperature code 4 is selected.
(17)Please contact your local Emerson representative for the availability of this option.
(18)Availability of measuring vanes depending on the selected Extension Material code.
(19)Not available when Materials of Construction: Extension code F and Operating Temperature code 4 or 5 are selected.
(20)Available when Power Supply code F or W is selected.
(21)Available when Application Profile code K is selected.
(22)Not available when customer-specified extended lengths are selected and their material is aluminum.
(23)Available when Application Profile code L and Extension Material code D are selected.
(24)Available when Application Profile code M is selected.
(25)Sliding sleeve option code S1 must not be used in hazardous (classified) areas.
(26)Not available when Process Connection Size code B is selected.
(27)Additional bearings must be selected when Application Profile M and Materials of Construction: Extension code F are selected.
Emerson.com/Rosemount |
9 |
Rosemount 2501 |
January 2020 |
Spares and accessories
The specification and selection of product materials, options, or components must be made by the purchaser of the equipment. See Materials selection for more information.
The starred offerings ( ) represent the most common options and should be selected for best delivery. The non-starred offerings are subject to additional delivery lead time.
Table 3: Spares
Part number |
Description |
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02500-1000-0001 |
Motor: 230 Vac (50/60 Hz), 1 revolution/minute |
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02500-1000-0002 |
Motor: 230 Vac (50/60 Hz), 5 revolutions/minute |
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02500-1000-0003 |
Motor: 115 Vac (50/60 Hz), 1 revolution/minute |
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02500-1000-0004 |
Motor: 115 Vac (50/60 Hz), 5 revolutions/minute |
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02500-1000-0005 |
Motor: 48 Vac (50/60 Hz), 1 revolution/minute |
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02500-1000-0006 |
Motor: 48 Vac (50/60 Hz), 5 revolutions/minute |
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02500-1000-0007 |
Motor: 24 Vac (50/60 Hz), 1 revolution/minute |
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02500-1000-0008 |
Motor: 24 Vac (50/60 Hz), 5 revolutions/minute |
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02500-1000-0009 |
Motor: 24 Vdc, 1 revolution/minute |
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02500-1000-0010 |
Motor: 24 Vdc, 5 revolutions/minute |
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02500-1000-0011 |
Motor: 24 Vdc and 22 to 230 Vac (50/60 Hz), universal voltage, 1 revolution/minute |
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02500-1000-0012(1) |
Motor: 24 Vdc and 22 to 230 Vac (50/60 Hz), universal voltage, 1 revolution/minute, |
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with fail-safe alarm |
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02500-1000-0013 |
Motor: 24 Vdc and 22 to 230 Vac (50/60 Hz), universal voltage, 1 revolution/minute, |
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with housing heating (for temperatures of -20 to -40 °C) |
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02500-1000-0014(1) |
Motor: 24 Vdc and 22 to 230 Vac (50/60 Hz), universal voltage, 1 revolution/minute, |
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with fail-safe alarm and housing heating (for temperatures of -20 to -40 °C) |
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02500-1000-0015 |
Motor: 24 Vdc and 22 to 230 Vac (50/60 Hz), universal voltage, 5 revolutions/minute, |
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02500-1000-0016(1) |
Motor: 24 Vdc and 22 to 230 Vac (50/60 Hz), universal voltage, 5 revolutions/minute, |
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with fail-safe alarm |
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02500-1000-0017 |
Motor: 24 Vdc and 22 to 230 Vac (50/60 Hz), universal voltage, 5 revolutions/minute, |
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with housing heating (for temperatures of -20 to -40 °C) |
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02500-1000-0018(1) |
Motor: 24 Vdc and 22 to 230 Vac (50/60 Hz), universal voltage, 5 revolutions/minute, |
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with fail-safe alarm and housing heating (for temperatures of -20 to -40 °C) |
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02500-1000-0021 |
Paddle: 1.02 x 3.03 in. (26 x 77 mm), boot-shaped vane for M30x1.5 |
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02500-1000-0022 |
Paddle: 1.57 x 3.86 in. (40 x 98 mm), boot-shaped vane, 304 stainless steel (1.4305) |
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02500-1000-0023 |
Paddle: 1.10 x 3.86 in. (28 x 98 mm), boot-shaped vane, 304 stainless steel (1.4305) |
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02500-1000-0024 |
Paddle: 1.38 x 4.17 in. (35 x 106 mm), boot-shaped vane, 316L stainless steel (1.4404) |
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02500-1000-0025 |
Paddle: 1.38 x 4.17 in. (35 x 106 mm), boot-shaped vane, 304 stainless steel (1.4305) |
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02500-1000-0026 |
Paddle: 1.57 x 3.86 in. (40 x 98 mm), boot-shaped vane, 316L stainless steel (1.4404) |
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02500-1000-0027 |
Paddle: 1.10 x 3.86 in. (28 x 98 mm), boot-shaped vane, 316L stainless steel (1.4404) |
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10 |
Emerson.com/Rosemount |
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