Rosemount 2051HT Specifications
Product Data Sheet
00813-0200-4591, Rev AC
Rosemount™ 2051HT Hygienic Pressure
Transmitter
July 2019
■
Hygienic design conforms to 3-A® and EHEDG standards
■
Reference accuracy up to 0.1%
■
Rated for SIP/CIP process temperatures up to 302 °F (150 °C)
■
Rangeability of 50:1
■
Up to two year stability
■
4–20 mA/HART®, PROFIBUS® PA or FOUNDATION™ Fieldbus output and AMS Suite: Intelligent Device
Manager compatibility ensures easier configurations, calibrations, and operation
■
Proven technology from Emerson improves process reliability and robustness
Rosemount 2051HT July 2019
Features and benefits
A foundation of reliable pressure measurement for the Life Science and Food and Beverage industries
Work more efficiently with the Rosemount™ 2051HT Hygienic Pressure Transmitter, an industry standard device that delivers
reliable process data and consistent batch results.
Hygienic design conforms to hygienic standards
The hygienic design of the Rosemount 2051HT features 32 μ-in. Ra mechanically polished wetted surfaces. The stainless steel (SST)
design is free of voids and crevices to ensure easy cleaning and wipe downs. The Rosemount 2051HT is also 3-A and EHEDG
approved.
Proven Emerson technology improves process reliability and robustness
The Rosemount 2051HT uses the same proven sensor and electronics technology found in other industry leading Rosemount
transmitters from Emerson. This ensures the transmitter to be robust and reliable, which improves your process consistency and
increases your plant availability
4–20 mA/HART®, PROFIBUS®, or FOUNDATION Fieldbus output and AMS Suite compatibility ensures easier configurations, calibrations and operation
Lower maintenance costs with AMS Suite software, improve device performance and enable easier configuration and setup.
Combining AMS Suite with the Rosemount 2051HT can also provide you with audit trail information to make FDA compliance
simpler and paper free.
Easy to use local configuration capabilities
The optional Local Operator Interface (LOI) features straightforward menus and built-in configuration buttons so you can
commission without complicated training or additional tools.
Contents
Features and benefits........................................................................................................................................................................ 2
Ordering Information........................................................................................................................................................................ 3
Specifications.................................................................................................................................................................................... 6
Product certifications...................................................................................................................................................................... 15
Dimensional drawings..................................................................................................................................................................... 16
Options........................................................................................................................................................................................... 18
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July 2019 Rosemount 2051HT
Ordering Information
Table 1: Rosemount™ 2051HT Hygienic In-line Pressure Transmitter 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.
Rosemount model
2051HT Hygienic Pressure Transmitter ★
Pressure type
G Gage ★
A Absolute ★
Performance class
Range 1–3 Range 0
B 0.10% span accuracy and 2-year stability 0.10% span accuracy and 6 month stability ★
C 0.20% span accuracy and 1-year stability 0.20% span accuracy and 6 month stability ★
Pressure range
Rosemount 2051HTG
(1)
Rosemount 2051HTA
0 –5 to 5 psi (–0,34 to 0,34 bar-g) N/A ★
1 –14.7 to 30 psi (–1,01 to 2,1 bar-g) 0 to 30 psia (0 to 2,1 bar-a) ★
2 –14.7 to 150 psi (–1,01 to 10,3 bar-g) 0 to 150 psia (0 to 10,3 bar-a) ★
3 –14.7 to 300 psi (–1,01 to 20,7 bar-g) N/A ★
Transmitter output
A 4–20 mA with digital signal based on HART® Protocol ★
F FOUNDATION™ Fieldbus Protocol ★
W PROFIBUS® PA Protocol
Sensor fill fluid
3 Neobee® M-20 ★
Housing material
1 Crevice-free polished 316 SST ★
2 Aluminum ★
Conduit entry size
A 1/2–14 NPT ★
(2)
B
Process connection style
M20 x 1.5 ★
(3)
Type Size Diaphragm Upper housing/extension
T32 Tri-Clamp 1 1/2-in. 316L SST 316L SST ★
T42 Tri-Clamp 2-in. 316L SST 316L SST ★
B11 Assemble to one Rosemount 1199 Diaphragm Seal with SST transmitter flange ★
3
Rosemount 2051HT July 2019
Table 1: Rosemount™ 2051HT Hygienic In-line Pressure Transmitter Ordering Information (continued)
Rosemount model
Options (include with selected model number)
Extended product warranty
WR3 3-year limited warranty ★
WR5 5-year limited warranty ★
Plantweb™ control functionality
A01 FOUNDATION™ Fieldbus advanced control function block suite ★
Product certifications
I1 ATEX intrinsic safety ★
I5 USA intrinsic safety and non incendive ★
I6 Canada intrinsic safety ★
I7 IECEx intrinsic safety ★
Display and interface options
(5)
M4
LCD display with LOI ★
(4)
M5 LCD display ★
Configuration buttons
(5)(6)
D4 Analog zero and span ★
DZ Digital zero trim ★
Transient terminal block
T1 Transient protection terminal block ★
Software configuration
(5)
C1 Custom software configuration ★
Alarm levels
C4 NAMUR alarm and saturation levels, high alarm ★
CN NAMUR alarm and saturation levels, low alarm ★
CR Custom alarm and saturation signal levels, high alarm (requires C1 and Configuration Data Sheet) ★
C7 Custom alarm and saturation signal levels, low alarm (requires C1 and Configuration Data Sheet) ★
CT Low alarm (standard Rosemount alarm and saturation levels) ★
Special cleaning
P2 Cleaning for special services
P3 Cleaning for <1 PPM Chlorine/Fluorine
Wetted surface finish certification
Q16 Surface Finish Certification ★
Calibration Certification
Q4 Calibration Certificate ★
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July 2019
Rosemount 2051HT
Table 1: Rosemount™ 2051HT Hygienic In-line Pressure Transmitter Ordering Information (continued)
Rosemount model
QP Calibration certificate and tamper evident seal ★
Material traceability certification
Q8 Material traceability certification per EN 10204 3.1 ★
Certificate of compliance to 3-A
QA Certificate of compliance to 3-A ★
Certificate of compliance to EHEDG
QE Certification of compliance to EHEDG ★
Conduit electrical connector
GE M12, 4-pin, male connector (eurofast®) ★
GM A size mini, 4-pin, male connector (minifast®) ★
Increased Ingress Protection
V9 Transmitter IP69K Rating
★
(SST only)
Rosemount 2051HTG lower range limit varies with atmospheric pressure.
(1)
For aluminum housings, transmitter conduit entry will be 1/2-NPT and a 1/2-NPT to M20 thread adapter will be provided.
(2)
All process wetted parts have surface finish of Ra < 32 μ-in (0.81 μ-m) standard unless otherwise specified.
(3)
Housing material option 1 comes with polycarbonate cover standard. Housing material optin 2 comes with AI and glass cover standard.
(4)
Only available with HART 4—20mA output (code A) and PROFIBUS PA (code W).
(5)
CDS required with order, available with output code A only.
(6)
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Rosemount 2051HT July 2019
Specifications
Performance specifications
For zero-based spans, reference conditions, Neobee® M-20 oil fill, SST materials, 1 ½-in. Tri-Clamp process connections, silicone
gasket material, clamping torque of 45 in-lb, digital trim values set to equal range points.
For assemblies attached to a Rosemount™ 1199 Diaphragm Seal (option code B11), use Instrument Toolkit™ or the QZ option to
quantify the total performance of the assembly under operating conditions.
Note
QZ option is to be added to the Rosemount 1199 model string.
Table 2: Reference accuracy
Stated reference accuracy equations include terminal based linearity, hysteresis, and repeatability.
Range Performance class option B Performance class option C
0 ±0.10% of span
For spans less than 5:1, accuracy =
1 ±0.10% of span
For spans less than 5:1, accuracy =
2 ±0.10% of span
For spans less than 10:1, accuracy =
3 ±0.10% of span
For spans less than 2:1, accuracy =
±0.20% of span
For spans less than 5:1,
±0.20% of span
For spans less than 5:1,
±0.20% of span
For spans less than 10:1,
±0.20% of span
For spans less than 2:1,
Table 3: Long term stability
±50 °F (28 °C) temperature changes, and up to 300 psi (20,68 bar) line pressure
Range Performance class option B Performance class option C
0 ±0.3% of URL for 1 year ±0.2% of URL for 6 months
1–2 ±0.15% of URL for 2 years ±0.15% of URL for 1 year
3 ±0.2% of URL for 2 years ±0.2% of URL for 1 year
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Pressure released
TdT
c
Transmitter Output vs. Time
100%
36.8%
0%
Time
63.2% of total
step change
= Dead time
= Time constant
T
d
T
c
Response time =
T
d
+
T
c
July 2019
Table 4: Dynamic performance
4–20 mA HART
Protocol
Total response time (Td +Tc)
(3)
®
(1)
FOUNDATION™ Fieldbus and PROFIBUS
PA Protocols
:
Ranges 0–3 145 ms 197 ms
Dead time (Td) 60 ms (nominal) 112 ms
(2)
Rosemount 2051HT
®
Typical HART transmitter response
time
Update rate 22 times per
second
22 times per second
(FOUNDATION Fieldbus)
20 times per second (PROFIBUS)
Dead time and update rate apply to all models and ranges; analog output only.
(1)
Transducer Block response time, Analog Input block execution time not included.
(2)
Nominal total response time at 75 °F (24 °C) reference conditions.
(3)
Table 5: Ambient temperature effect per 50 °F (28 °C)
Range Ambient temperature effect
0 ±(0.70% URL + 0.30% span)
1 ±(0.35% URL + 0.20% span)
2 ±(0.10% URL + 0.075% span)
3 ±(0.10% URL + 0.075% span)
For assemblies attached to a Rosemount 1199 Diaphragm Seal (option code B11) see Instrument Toolkit
Mounting position effects
Zero shifts to ±2.5 inH2O (6,22 mbar), which can be calibrated out. No span effect.
™
Vibration effect
Less than ±0.1% of URL when tested per the requirements of IEC 60770 control room level.
Electromagnetic compatibility (EMC)
Meets all industrial environment requirements of EN61326. Maximum deviation <1% Span during EMC disturbance.
Note
During surge event, device with 4-20mA (Transmitter output option code A) may exceed maximum EMC deviation limit or reset;
however, device will self-recover and return to normal operation within specified start-up time.
Note
During ESD event, device with FOUNDATION™ Fieldbus or PROFIBUS® (Transmitter output option code F or W) may exceed maximum
EMC deviation limit, however, device will self-recover and return to normal operation within specified start-up time.
Transient protection (option code T1)
Tested in accordance with IEEE C62.41.2-2002, location category B.
6 kV crest (0.5 μs–100 kHz)
7
Communication requires a minimum
loop resistance of 250 ohms.
42.4
Voltage (Vdc)
10.5
20
30
1387
1000
500
0
Operating
region
Load (Ωs)
Rosemount 2051HT
3 kA crest (8 x 20 μs)
6 kV crest (1.2 x 50 μs)
Functional specifications
Table 6: Range and Sensor Limits
Range Minimum span Range and sensor limits
URL LRL
2051HTA 2051HTG
0 0.50 psi (0,034 bar) 5.00 psi (0,34 bar) N/A –5.00 psig (–0,34 bar)
1 1.00 psi (0,069 bar) 30.00 psi (2,07 bar) 0 psia (0 bar) –14.70 psig (–1,01 bar)
2 1.50 psi (0,10 bar) 150.00 psi (10,34 bar)
3 15.00 psi (1,03 bar) 300.00 psi (20,68 bar) N/A
Assumes atmospheric pressure of 14.70 psia (1,01 bar-a).
(1)
Service
Liquid, gas, and vapor applications
(1)
July 2019
4–20 mA HART® (output code A)
Power supply
External power supply required. Standard transmitter (4–20 mA) operates on 10.5–42.4 Vdc with no load.
Load limitations
Maximum loop resistance is determined by the voltage level of the external power supply described by:
Max. loop resistance = 43.5 (Power Supply voltage – 10.5)
Communication requires a minimumloop resistance of 250 ohms.
Note
For CSA approval, power supply must not exceed 42.4 V.
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