1. General Introduction
Rosemount 2051C Pressure Transmitters is an economical type for differential, gage, and absolute pressure measurement, performance up to 0.05% of span accuracy, patented coplanar technology allows direct mounting to pressure, flow or level solutions for installation flexibility, delivers fully assembled to manifolds, diaphragm seals or primary flow elements for straightforward installation, local Operator Interface offers easy-to-use menus and built-in configuration buttons for streamline commissioning, SIL 2/3 certified to IEC 61508 (via 3rd party) and prior-use certificate of FMEDA data for safety installations.
Rosemount 2051C owns standard speciation as: turn down ratio is up to 100:1, 4-20 mA HART, Wireless HART, FOUNDATION Field bus, PROFIBUS, 1-5 V Low Power HART communication protocol selectable, static pressure is up to 137.9 bar, wetted material 316L SST, Alloy C-276, Tantalum optional, with basic diagnostics function.
2. Range & sensor limits
Range | Minimum span | Lower Range Limit (LRL) 2051C Differential | Lower Range Limit (LRL) 2051C Gauge | Upper Range Limit (URL) |
1 | 0.5 inH2O (1.2 mbar) | -25 inH2O (-62.1 mbar) | -25 inH2O (-62.1 mbar) | 25 inH2O (62.3 mbar) |
2 | 2.5 inH2O (6.2 mbar) | –250.00 inH2O (–0,62 bar) | –250.00 inH2O (–0,62 bar) | 250.00 inH2O (0,62 bar) |
3 | 10 inH2O (24.9 mbar) | –1000.00 inH2O (–2.49 bar) | –393.00 inH2O (–979 mbar) | 1000.00 inH2O (2.49 bar) |
4 | 3 psi (207 bar) | –300 psi (–20.7 bar) | –14.2 psig (–979 bar) | 300 psi (20.7 bar) |
5 | 20 psi (138 bar0 | –2000 psi (–1379 bar) | –14.2 psig (–979 bar) | 2000 psi (1379 bar) |
3. Basic code selection of 2051C pressure transmitter
Main Code | Suffix Codes | Description | |||||||
2051C | Rosemount Coplanar Pressure Transmitter | ||||||||
Measurement type | D | Differential | |||||||
G | Gage | ||||||||
Pressure range | 1 | –25 to 25 inH2O (–62,2 to 62,2 mbar) | |||||||
2 | –250 to 250 inH2O (–623 to 623 mbar) | ||||||||
3 | –1000 to 1000 inH2O (–2,5 to 2,5 bar) | ||||||||
4 | –300 to 300 psi (–20,7 to 20,7 bar) | ||||||||
5 | –2000 to 2000 psi (–137,9 to 137,9 bar) | ||||||||
Transmitter output | A | 4–20 mA with digital signal based on HART Protocol | |||||||
F | FOUNDATION™ Fieldbus Protocol | ||||||||
W | PROFIBUS PA Protocol | ||||||||
X | Wireless | ||||||||
M | Low power, 1–5 Vdc with digital signal based on HART Protocol | ||||||||
Process flange type | 2 | Coplanar SST SST | |||||||
3 | Coplanar Cast C-276 Alloy C-276 | ||||||||
5 | Coplanar Plated CS SST | ||||||||
7 | Coplanar SST Alloy C-276 | ||||||||
8 | Coplanar Plated CS Alloy C-276 | ||||||||
0 | Alternate process connection | ||||||||
Isolating diaphragm | 2 | 316L SST | |||||||
3 | Alloy C-276 | ||||||||
5 | Tantalum | ||||||||
O-ring | A | Glass-filled PTFE | |||||||
B | Graphite-filled PTFE | ||||||||
Sensor fill fluid | 1 | Silicone | |||||||
2 | Inert | ||||||||
Housing material | A | Aluminum ½–14 NPT | |||||||
B | Aluminum M20 x 1.5 | ||||||||
J | SST ½–14 NPT | ||||||||
K | SST M20 x 1.5 | ||||||||
P | Engineered polymer No conduit entries | ||||||||
D | Aluminum G½ | ||||||||
M | SST G½ | ||||||||
Optional codes | Optional codes [ As per table below] | ||||||||
4. Typical mounting & dimensions for 2051C pressure transmitter with Coplanar Flange Mounting Configurations
5. Typical mounting & dimensions for 2051C pressure transmitter with Traditional Flange Mounting Configurations
