Rosemount 2535 Specifications
Product Data Sheet
00813-0100-2535, Rev AA
Rosemount™ 2535 Solids Level Switch
Vibrating Rod
December 2019
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Compact level switch with threaded process connections from 1-in.
■
Sensitivity is adjustable with four settings
■
High surface quality for excellent resistance
■
Robust design, suitable for process pressures up to 232 psi (16 bar)
■
Temperature range from -40 to 302 °F (-40 to 150 °C)
Rosemount 2535 December 2019
Introduction
Measurement principles
The Rosemount™ 2535 Solids Level Switch uses the principle of a tuning fork and a piezo-electric crystal to oscillate the rod at its
natural frequency. Changes to the oscillation frequency are continuously monitored by electronics as it varies depending on the rod
being covered or uncovered.
When the solids medium in the vessel (silo) falls away from the rod, it causes a change of oscillation frequency that is detected by
the electronics and the output switches to indicate an 'uncovered' state.
When the solids medium in the vessel (silo) rises and covers the rod, it causes a change of oscillation frequency that is detected by
the electronics and the output switches to indicate a 'covered' state.
The electrical output will vary depending on the electronics selected.
Key features and benefits
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Reliable level detection for all bulk materials
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Particularly suitable for use in fine-grained and powdery materials, and materials with strong "caking" properties and coarsegrained granulate
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Ideal for use for full-silo, on-demand, or empty-silo detection
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Very compact design for installation in vessels with very limited space
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Standard shaft lengths are available from 160 mm
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Tube-extension versions available with shaft lengths up to 4000 mm
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Robust aluminum die-cast housing with IP67 protection
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Easy installation and commissioning, and maintenance-free
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Approvals for application within hazardous areas (dust)
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RoHS compliance
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Adjustable sensitivity levels for light bulk solids from 20 g/l
Contents
Introduction...................................................................................................................................................................................... 2
Ordering information........................................................................................................................................................................ 4
Spare and accessories........................................................................................................................................................................6
Specifications.................................................................................................................................................................................... 7
Product certifications...................................................................................................................................................................... 11
Dimensional drawings..................................................................................................................................................................... 15
2 Emerson.com/Rosemount
December 2019 Rosemount 2535
Applications
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Materials with very light product density
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Overfill detection in pipes and shafts
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Low level detection
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Silos/vessels with limited space
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Vibration within the vessel
Emerson.com/Rosemount 3
Rosemount 2535 December 2019
Ordering information
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.
Table 1: Rosemount 2535 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
2535 Rosemount Solids Switch - Vibrating Rod ★
Thermal profile
(1)
M Without extension tube (up to T
E With extension tube (up to T
Materials of construction: process connection/thermal extension tube
D 304/321 Stainless steel (1.4301/1.4541) ★
S 316L Stainless steel (1.4404) ★
Conduit entry/cable threads
1 M20 x 1.5, 1 off screwed cable gland + 1 off blind plug for CE, ATEX, and IECEx ★
2 M20 x 1.5, 2 off screwed cable glands ★
4 ½-in. NPT tapered ANSI B1.20.1 (1 off conduit + 1 off Ex-d blind plug) ★
5 ¾-in. NPT tapered ANSI B1.20.1 (1 off conduit + 1 off Ex-d blind plug) ★
Process connection size
1 1 in./25 mm (DN25)/25A ★
A 1.25 in./32 mm ★
5 1.5 in./40 mm (DN40)/40A ★
2 2 in./50 mm (DN50)/50A ★
3 3 in./80 mm (DN80)/80A ★
4 4 in./100 mm (DN100)/100A ★
process
= 302 °F (150 °C) at T
process
= 302 °F (150 °C) at T
<= 104 °F (40 °C)) ★
amb
> 104 °F (40 °C)) ★
amb
Process connection rating Sizes
AA ASME B16.5 Class 150 flange 2, 3, and 4 ★
DZ EN 1092-1 PN6 flange 4 ★
DA EN 1092-1 PN16 flange 4 ★
NN For use with non-flange process connection type 1, A, 5, and 2 ★
Process connection type Ratings
F Flat-face flange DZ and DA ★
R Raised-face flange AA ★
G BSPP (G) thread NN ★
N NPT thread NN ★
C Tri Clamp NN ★
4 Emerson.com/Rosemount
December 2019
Rosemount 2535
Table 1: Rosemount 2535 Ordering Information (continued)
Electronic type
G PNP, 20 to 40 Vdc
V Relay DPDT, 21 to 230 Vac, 22 to 45 Vdc ★
Rod length
A Standard length 6.3 in. (160 mm) ★
E Extended, customer-specified length in tenths of inches ★
M Extended, customer-specified length in millimeters ★
Specific extended rod length
0000 Factory default length (only if rod length A is selected) ★
XXXX Specific customer-specified length in tenths of inches or millimeters (XXX.X inches or XXXX mm) ★
Product certifications Conduit entries
NA No hazardous locations certifications All ★
ND ATEX, dust certification All ★
NK IECEx, dust certification All ★
(2)
EM
Technical Regulations Customs Union (EAC), dust certification All
KZ American and Canadian Ordinary Location (unclassified, safe area) 4 ★
KB American and Canadian, DIP 4 ★
Options (include with selected model number)
Calibration data certification
Q4 Certificate of functional test ★
Weather protection
P2 Weather protection cover ★
Sliding sleeve
(3)
Certifications
S1 Sliding sleeve, without overpressure, maximum 302 °F (150 °C) NA and KZ ★
S2 Sliding sleeve, with overpressure, maximum 232 psi (16 bar), maximum 302 °F (150 °C) All ★
Extended product warranty
WR5 5-year limited warranty ★
Typical model number: 2535 M S 1 5 NN G V A 0000 NA
(1)
A thermal extension tube (temperature-extended shaft) moves the electronics further away from high process temperatures. Select this extension
when ambient temperatures are greater than 104 °F (40 °C). See Operating conditions and Dimensional drawings for further information.
(2)
Please contact your local Emerson representative for the availability of this option code.
(3)
Sliding sleeves require an extended length fork from 11.8 to 157-in. (300 to 4000 mm) with a threaded or flanged process connection. Tri Clamp,
1-in and 1¼-in. threaded process connections are not available.
Emerson.com/Rosemount 5
Rosemount 2535 December 2019
Spare 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 2: Spares
Part number Description
02500-1000-0127 Electronics board: Relay DPDT 21 to 230 Vac, 22 to 45 Vdc ★
02500-1000-0128 Electronics board: Relay PNP, 20 to 40 Vdc ★
Table 3: Accessories
Part number Description
02500-7500-0001 Mounting kit 1 for DN100 PN6 and EN1092-1 flange with ø18 mm holes, containing:
4 off M16 x 60 mm screws (A2-grade stainless steel)
4 off M16 nuts
4 off washers
1 off seal (non-food grade) for up to 256 °F (125 °C)
02500-7500-0004 Mounting kit 2 for DN100 PN6 and EN1092-1 flange with M16 threaded holes, containing:
4 off M16 x 40 mm screws (A2-grade stainless steel)
4 off washers
1 off seal (non-food grade) for up to 256 °F (125 °C)
02500-7500-0007 Mounting kit 3 for DN100 PN16 and EN1092-1 flange with ø18 mm holes, containing:
8 off M16 x 60 mm screws (A2-grade stainless steel)
8 off M16 nuts
8 off washers
1 off seal (non-food grade) for up to 256 °F (125 °C)
02500-7500-0010 Mounting kit 4 for DN100 PN16 and EN1092-1 flange with M16 threaded holes, containing:
8 off M16 x 40 mm screws (A2-grade stainless steel)
8 off washers
1 off seal (non-food grade) for up to 256 °F (125 °C)
★
★
★
★
6 Emerson.com/Rosemount
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