3051C 4–20 mA Industrial Pressure Transmitter for Flow, Level, and DP Measurement
Product Introduction
The Rosemount 3051C 4–20 mA Industrial Pressure Transmitter is a high‑performance solution designed for accurate and reliable measurement of differential, gauge, and absolute pressure. Built with Emerson’s proven Coplanar™ platform, it delivers exceptional stability and repeatability across flow, level, and pressure applications. Featuring a robust 4–20 mA output with HART® communication, the 3051C integrates seamlessly into modern process automation systems, ensuring precise control and real‑time diagnostics. Its durable construction, explosion‑proof housing, and flexible mounting options make it ideal for demanding industrial environments where safety, accuracy, and long‑term reliability are critical.
| Parameter |
3051C Coplanar |
3051T In‑Line |
3051L Level |
3051S Scalable |
3051CFx Flow |
| Measurement Type |
Differential, Gauge, Absolute Pressure |
Gauge, Absolute Pressure |
Hydrostatic Level (via flange) |
Differential, Gauge, Absolute Pressure |
Differential Pressure (with primary element) |
| Typical Applications |
Flow, Level, Pressure |
Direct process pressure, tank pressure |
Tank level, liquid storage |
High‑accuracy flow, level, pressure |
Flow measurement (orifice, venturi, pitot) |
| Accuracy |
±0.04% of span (10:1 turndown) |
±0.075% of URL |
±0.05% of span |
±0.025% of span (200:1 turndown) |
±0.04% of span |
| Output |
4–20 mA + HART (optional WirelessHART, FF, Profibus) |
4–20 mA + HART |
4–20 mA + HART |
4–20 mA + HART, FOUNDATION Fieldbus, Profibus |
4–20 mA + HART |
| Key Features |
Coplanar platform, integrates with manifolds & flow elements |
Compact, simple installation, cost‑effective |
Direct flange mounting, optimized for level |
Modular, high‑performance, advanced diagnostics, SIL safety |
Factory‑configured flow transmitter, DP + flow calculation |
Product Specifications:
| Model |
Pressure Type |
Range Example (Typical) |
Accuracy |
Output Options |
Key Features |
| 3051CD |
Differential |
–250 to +250 inH₂O |
±0.04% of span |
4–20 mA HART, Fieldbus, Wireless |
Ideal for flow and level, Coplanar™ design, diagnostics for impulse lines |
| 3051CG |
Gauge |
0 to 300 psi |
±0.04% of span |
4–20 mA HART, Fieldbus, Wireless |
Measures pressure relative to the atmosphere; robust for general process use |
| 3051CA |
Absolute |
0 to 150 psia |
±0.04% of span |
4–20 mA HART, Fieldbus, Wireless |
Used in vacuum or sealed systems; stable under varying atmospheric conditions |
3051C vs. 3051S – When to Choose What
| Feature |
3051C Series |
3051S Series |
| Accuracy |
±0.04% of span |
Up to ±0.025% of span |
| Rangedown |
Up to 150:1 |
Up to 200:1 |
| Cost |
More economical |
Higher investment |
| Use Case |
Standard industrial applications |
High-precision or critical applications |
| Diagnostics |
Loop Integrity, Plugged Line Detection |
Advanced diagnostics, remote display |
Product Selection Table:
| model |
Type of transmitter (choose one) |
CD |
CG |
CA |
| 3051CD 3051CG 3051CA |
Differential pressure transmitter, Gauge pressure transmitter, Absolute pressure transmitter |
--
--
--
|
--
--
--
|
--
--
--
|
| code |
Pressure range (URL) (choose one)
3051CD type 3051CG type 3051CA type |
CD |
CG |
CA |
| 0 |
Not provided 0-0.167to0-5psia
(0-8.6to0-260mmHga) |
-- |
-- |
-- |
| 1 |
0-0.5to0-25inH20 Not 0- 0.3 to 0- 30 psi
(0-2.07to0-206.8kPa) (0-2.07to0-206.8kPa) |
-- |
-- |
-- |
| 2 |
0-2.5to0-250inH200-2.5to0-250inH200-1.5to0-150psia
(0-0.62to0-62.2kPa)(0-0.62to0-62.2kPa)(0-10.34to0-1034.2kPa) |
-- |
-- |
-- |
| 3 |
0-10to0-1000inH200-10to0-1000inH200-8to0-800psia
(0-2.48to0-248kPa)(0-2.48to0-248kPa)(0-55.16to0-5515.8kPa) |
-- |
-- |
-- |
| 4 |
0-3to0-300 psi 0-3to0-300 psi 0-40to0-4000 psi
(0-20.7to0-2070kPa)(0-20.7to0-2070kPa)(0-275.8to0-27580kPa) |
-- |
-- |
-- |
| 5 |
0-20 to 0-2000 psi 0-200 to 0-2000 psi
(0-138 to 0-13800kPa) (0-138 to 0-13800kPa) |
-- |
-- |
-- |
| code |
output |
CD |
CG |
CA |
A
M(1) |
4- 20mA, with digital signal based on HART protocol
Low power consumption, 1-5VDC with digital signal based on HART protocol (0.8-3.2Vdc, using option code C2) Not provided |
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-- |
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--
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Applications:
Rosemount 3051C Pressure Transmitter – FAQ
Q1. What is the output signal of the Rosemount 3051C?
A: The 3051C provides a standard 4–20 mA analog output with HART® digital communication for configuration and diagnostics.
Q2. What types of pressure can the 3051C measure?
A: It supports differential pressure (DP), gauge pressure (GP), and absolute pressure (AP) measurements.
Q3. What are the typical applications?
A: The 3051C is widely used for flow measurement (with primary elements like orifice plates), liquid level monitoring, and general pressure measurement in industrial processes.
Q4. What is the accuracy of the 3051C?
A: Reference accuracy is typically ±0.04% of span, with turndown up to 10:1.
Q5. What communication options are available?
A: Standard is 4–20 mA + HART, but the 3051 family also offers WirelessHART, FOUNDATION Fieldbus, and Profibus in certain models.
Q6. Is the 3051C suitable for hazardous environments?
A: Yes. It is available with explosion‑proof, intrinsically safe, and SIL safety certifications, making it suitable for harsh and hazardous areas.
Q7. How is the 3051C installed?
A: The Coplanar™ platform allows easy integration with manifolds, flow elements, and level assemblies. It can be mounted directly or with brackets depending on the application.
Q8. Does the 3051C support diagnostics?
A: Yes. Advanced diagnostics include plugged impulse line detection, loop integrity checks, and real‑time status monitoring.
Q9. What materials are available for wetted parts?
A: Common options include 316L stainless steel, Hastelloy®, Monel®, and Tantalum, depending on process compatibility.
Q10. What industries use the 3051C?
A: It is widely applied in oil & gas, chemical, power generation, water treatment, and pharmaceutical industries for reliable process control.
Typical Models of 3051CG Transmitters:
| Model Code |
Range Code |
Diaphragm Material |
Vent/Drain Material |
Mounting Bracket |
Display Option |
Special Option |
| 3051CG1A02A1AB1H2L4M5 |
1 |
316L SST |
SST |
Coplanar SST |
LCD (M5) |
— |
| 3051CG2A02A1AB1H2L4M5 |
2 |
316L SST |
SST |
Coplanar SST |
LCD (M5) |
— |
| 3051CG3A02A1AB1H2L4M5 |
3 |
316L SST |
SST |
Coplanar SST |
LCD (M5) |
— |
| 3051CG4A02A1AB1H2L4M5 |
4 |
316L SST |
SST |
Coplanar SST |
LCD (M5) |
— |
| 3051CG5A02A1AB1H2L4M5 |
5 |
316L SST |
SST |
Coplanar SST |
LCD (M5) |
— |
| 3051CG1A02A1AB3H2L4M5 |
1 |
316L SST |
SST |
Coplanar SST |
LCD (M5) |
Process Flange B3 |
| 3051CG1A02A1AB1H2L4M5K5 |
1 |
316L SST |
SST |
Coplanar SST |
LCD (M5) |
K5 (Tagging) |
| 3051CG1A02A1AB1H2L4M5E5 |
1 |
316L SST |
SST |
Coplanar SST |
LCD (M5) |
E5 (Calibration) |
| 3051CG1A02A1AB1H2L4M5I5 |
1 |
316L SST |
SST |
Coplanar SST |
LCD (M5) |
I5 (Certs/Docs) |
| 3051CG1A22A1AB4M5 |
1 |
316L SST |
SST |
Coplanar SST |
LCD (M5) |
Output A22 |
| 3051CG1A22A1AB4M5DF |
1 |
316L SST |
SST |
Coplanar SST |
LCD (M5) |
DF (Factory Config) |
| 3051CG1A22A1AB4M5K5 |
1 |
316L SST |
SST |
Coplanar SST |
LCD (M5) |
K5 (Tagging) |
| 3051CG1A22A1AB4M5E5 |
1 |
316L SST |
SST |
Coplanar SST |
LCD (M5) |
E5 (Calibration) |
| 3051CG1A22A1AB4M5I5 |
1 |
316L SST |
SST |
Coplanar SST |
LCD (M5) |
I5 (Certs/Docs) |
Good Service
We offer high‑quality products, fast delivery, and competitive prices for Transmitters.
- Please send your RFQ to get the latest price.
- We will ship the items within 3–5 working days after receiving the payment.
- We can ship via UPS / DHL / EMS / FedEx — please contact us, and we will use your preferred method.
- We maintain a large stock, and since prices are variable, we can always provide a good price. For specific quotations, please contact us directly.
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